diff --git a/libs/graphicsenv/Android.bp b/libs/graphicsenv/Android.bp
index bab87ac..4da30e9 100644
--- a/libs/graphicsenv/Android.bp
+++ b/libs/graphicsenv/Android.bp
@@ -23,7 +23,6 @@
 
     shared_libs: [
         "liblog",
-        "libcutils",
     ],
 
     export_include_dirs: ["include"],
diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index 3328ad7..2a7d76e 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -18,12 +18,9 @@
 #define LOG_TAG "GraphicsEnv"
 #include <graphicsenv/GraphicsEnv.h>
 
-#include <sys/prctl.h>
-
 #include <mutex>
 
 #include <android/dlext.h>
-#include <cutils/properties.h>
 #include <log/log.h>
 
 // TODO(b/37049319) Get this from a header once one exists
@@ -49,14 +46,6 @@
     return env;
 }
 
-int GraphicsEnv::getCanLoadSystemLibraries() {
-    if (property_get_bool("ro.debuggable", false) && prctl(PR_GET_DUMPABLE, 0, 0, 0, 0)) {
-        // Return an integer value since this crosses library boundaries
-        return 1;
-    }
-    return 0;
-}
-
 void GraphicsEnv::setDriverPath(const std::string path) {
     if (!mDriverPath.empty()) {
         ALOGV("ignoring attempt to change driver path from '%s' to '%s'",
@@ -192,10 +181,4 @@
 const char* android_getAngleAppPref() {
     return android::GraphicsEnv::getInstance().getAngleAppPref();
 }
-const char* android_getLayerPaths() {
-    return android::GraphicsEnv::getInstance().getLayerPaths().c_str();
-}
-const char* android_getDebugLayers() {
-    return android::GraphicsEnv::getInstance().getDebugLayers().c_str();
-}
 }
diff --git a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
index 1783429..00e8fc0 100644
--- a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
+++ b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
@@ -29,8 +29,6 @@
 public:
     static GraphicsEnv& getInstance();
 
-    int getCanLoadSystemLibraries();
-
     // Set a search path for loading graphics drivers. The path is a list of
     // directories separated by ':'. A directory can be contained in a zip file
     // (drivers must be stored uncompressed and page aligned); such elements
@@ -87,13 +85,11 @@
  *    will be removed soon.
  */
 extern "C" {
-    android_namespace_t* android_getDriverNamespace();
-    android_namespace_t* android_getAngleNamespace();
-    const char* android_getAngleAppName();
-    const char* android_getAngleAppPref();
-    bool android_getAngleDeveloperOptIn();
-    const char* android_getLayerPaths();
-    const char* android_getDebugLayers();
+android_namespace_t* android_getDriverNamespace();
+android_namespace_t* android_getAngleNamespace();
+const char* android_getAngleAppName();
+const char* android_getAngleAppPref();
+bool android_getAngleDeveloperOptIn();
 }
 
 #endif // ANDROID_UI_GRAPHICS_ENV_H
diff --git a/libs/vr/libbufferhub/buffer_hub_base.cpp b/libs/vr/libbufferhub/buffer_hub_base.cpp
index 9b84707..bc6aece 100644
--- a/libs/vr/libbufferhub/buffer_hub_base.cpp
+++ b/libs/vr/libbufferhub/buffer_hub_base.cpp
@@ -116,9 +116,10 @@
   cid_ = buffer_desc.buffer_cid();
   buffer_state_bit_ = buffer_desc.buffer_state_bit();
 
-  // Note that here the buffer state is mapped from shared memory as an atomic
-  // object. The std::atomic's constructor will not be called so that the
-  // original value stored in the memory region will be preserved.
+  // Note that here the buffer_state, fence_state and active_clients_bit_mask
+  // are mapped from shared memory as an atomic object. The std::atomic's
+  // constructor will not be called so that the original value stored in the
+  // memory region will be preserved.
   buffer_state_ = &metadata_header_->buffer_state;
   ALOGD_IF(TRACE,
            "BufferHubBase::ImportBuffer: id=%d, buffer_state=%" PRIx64 ".",
@@ -127,6 +128,12 @@
   ALOGD_IF(TRACE,
            "BufferHubBase::ImportBuffer: id=%d, fence_state=%" PRIx64 ".", id(),
            fence_state_->load());
+  active_clients_bit_mask_ = &metadata_header_->active_clients_bit_mask;
+  ALOGD_IF(
+      TRACE,
+      "BufferHubBase::ImportBuffer: id=%d, active_clients_bit_mask=%" PRIx64
+      ".",
+      id(), active_clients_bit_mask_->load());
 
   return 0;
 }
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h
index 03208f5..282be46 100644
--- a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h
@@ -134,6 +134,7 @@
   void* user_metadata_ptr_{nullptr};
   std::atomic<uint64_t>* buffer_state_{nullptr};
   std::atomic<uint64_t>* fence_state_{nullptr};
+  std::atomic<uint64_t>* active_clients_bit_mask_{nullptr};
 
   LocalHandle shared_acquire_fence_;
   LocalHandle shared_release_fence_;
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
index 5a24253..6d28d41 100644
--- a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
@@ -75,6 +75,7 @@
   // and vendor HAL).
   std::atomic<uint64_t> buffer_state;
   std::atomic<uint64_t> fence_state;
+  std::atomic<uint64_t> active_clients_bit_mask;
   uint64_t queue_index;
 
   // Public data format, which should be updated with caution. See more details
@@ -82,7 +83,7 @@
   DvrNativeBufferMetadata metadata;
 };
 
-static_assert(sizeof(MetadataHeader) == 128, "Unexpected MetadataHeader size");
+static_assert(sizeof(MetadataHeader) == 136, "Unexpected MetadataHeader size");
 static constexpr size_t kMetadataHeaderSize = sizeof(MetadataHeader);
 
 }  // namespace BufferHubDefs
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index 583aec9..2a6dee4 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -140,10 +140,8 @@
         "EGL/egl_cache.cpp",
         "EGL/egl_display.cpp",
         "EGL/egl_object.cpp",
-        "EGL/egl_layers.cpp",
         "EGL/egl.cpp",
         "EGL/eglApi.cpp",
-        "EGL/egl_platform_entries.cpp",
         "EGL/Loader.cpp",
         "EGL/egl_angle_platform.cpp",
     ],
@@ -151,11 +149,8 @@
         "libvndksupport",
         "android.hardware.configstore@1.0",
         "android.hardware.configstore-utils",
-        "libbase",
         "libhidlbase",
         "libhidltransport",
-        "libnativebridge",
-        "libnativeloader",
         "libutils",
     ],
     static_libs: [
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index cd227ca..87f0fe1 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -33,7 +33,6 @@
 #endif
 #include <vndksupport/linker.h>
 
-#include "egl_platform_entries.h"
 #include "egl_trace.h"
 #include "egldefs.h"
 
@@ -238,12 +237,12 @@
 
     setEmulatorGlesValue();
 
-    dso = load_driver("GLES", cnx, EGL | GLESv1_CM | GLESv2 | PLATFORM);
+    dso = load_driver("GLES", cnx, EGL | GLESv1_CM | GLESv2);
     if (dso) {
         hnd = new driver_t(dso);
     } else {
         // Always load EGL first
-        dso = load_driver("EGL", cnx, EGL | PLATFORM);
+        dso = load_driver("EGL", cnx, EGL);
         if (dso) {
             hnd = new driver_t(dso);
             hnd->set( load_driver("GLESv1_CM", cnx, GLESv1_CM), GLESv1_CM );
@@ -635,25 +634,6 @@
             return nullptr;
     }
 
-    if (mask & PLATFORM) {
-        // For each entrypoint tracked by the platform
-        char const* const* entries = platform_names;
-        EGLFuncPointer* curr = reinterpret_cast<EGLFuncPointer*>(&cnx->platform);
-
-        while (*entries) {
-            const char* name = *entries;
-            EGLFuncPointer f = FindPlatformImplAddr(name);
-
-            if (f == nullptr) {
-                // If no entry found, update the lookup table: sPlatformImplMap
-                ALOGE("No entry found in platform lookup table for %s", name);
-            }
-
-            *curr++ = f;
-            entries++;
-        }
-    }
-
     if (mask & EGL) {
         getProcAddress = (getProcAddressType)dlsym(dso, "eglGetProcAddress");
 
diff --git a/opengl/libs/EGL/Loader.h b/opengl/libs/EGL/Loader.h
index 9cc73f3..e88d1a2 100644
--- a/opengl/libs/EGL/Loader.h
+++ b/opengl/libs/EGL/Loader.h
@@ -33,8 +33,7 @@
     enum {
         EGL         = 0x01,
         GLESv1_CM   = 0x02,
-        GLESv2      = 0x04,
-        PLATFORM    = 0x08
+        GLESv2      = 0x04
     };
     struct driver_t {
         explicit driver_t(void* gles);
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index 8870d5f..7089860 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -30,10 +30,11 @@
 #include "egl_tls.h"
 #include "egl_display.h"
 #include "egl_object.h"
-#include "egl_layers.h"
 #include "CallStack.h"
 #include "Loader.h"
 
+typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
+
 // ----------------------------------------------------------------------------
 namespace android {
 // ----------------------------------------------------------------------------
@@ -166,10 +167,6 @@
     return (GLint)c->tokenized_gl_extensions.size();
 }
 
-egl_connection_t* egl_get_connection() {
-    return &gEGLImpl;
-}
-
 // ----------------------------------------------------------------------------
 
 // this mutex protects:
@@ -195,14 +192,6 @@
         cnx->dso = loader.open(cnx);
     }
 
-    // Check to see if any layers are enabled and route functions through them
-    if (cnx->dso) {
-        // Layers can be enabled long after the drivers have been loaded.
-        // They will only be initialized once.
-        LayerLoader& layer_loader(LayerLoader::getInstance());
-        layer_loader.InitLayers(cnx);
-    }
-
     return cnx->dso ? EGL_TRUE : EGL_FALSE;
 }
 
@@ -273,11 +262,6 @@
     nullptr
 };
 
-char const * const platform_names[] = {
-    #include "platform_entries.in"
-    nullptr
-};
-
 #undef GL_ENTRY
 #undef EGL_ENTRY
 
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index 8202c4e..d2dc514 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -1,5 +1,5 @@
 /*
- ** Copyright 2018, The Android Open Source Project
+ ** Copyright 2007, The Android Open Source Project
  **
  ** Licensed under the Apache License, Version 2.0 (the "License");
  ** you may not use this file except in compliance with the License.
@@ -16,198 +16,1185 @@
 
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
+#include <ctype.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <hardware/gralloc1.h>
+
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
+#include <EGL/eglext_angle.h>
+
+#include <android/hardware_buffer.h>
+#include <private/android/AHardwareBufferHelpers.h>
+
+#include <cutils/compiler.h>
+#include <cutils/properties.h>
+#include <log/log.h>
+
+#include <condition_variable>
+#include <deque>
+#include <mutex>
+#include <unordered_map>
+#include <string>
+#include <thread>
 
 #include "../egl_impl.h"
 
-#include "egl_layers.h"
-#include "egl_platform_entries.h"
+#include "egl_display.h"
+#include "egl_object.h"
 #include "egl_tls.h"
 #include "egl_trace.h"
 
 using namespace android;
 
+// ----------------------------------------------------------------------------
+
 namespace android {
 
-extern EGLBoolean egl_init_drivers();
+using nsecs_t = int64_t;
 
-} // namespace android
+struct extention_map_t {
+    const char* name;
+    __eglMustCastToProperFunctionPointerType address;
+};
 
-static inline void clearError() {
-    egl_tls_t::clearError();
+/*
+ * This is the list of EGL extensions exposed to applications.
+ *
+ * Some of them (gBuiltinExtensionString) are implemented entirely in this EGL
+ * wrapper and are always available.
+ *
+ * The rest (gExtensionString) depend on support in the EGL driver, and are
+ * only available if the driver supports them. However, some of these must be
+ * supported because they are used by the Android system itself; these are
+ * listed as mandatory below and are required by the CDD. The system *assumes*
+ * the mandatory extensions are present and may not function properly if some
+ * are missing.
+ *
+ * NOTE: Both strings MUST have a single space as the last character.
+ */
+
+extern char const * const gBuiltinExtensionString;
+extern char const * const gExtensionString;
+
+// clang-format off
+// Extensions implemented by the EGL wrapper.
+char const * const gBuiltinExtensionString =
+        "EGL_KHR_get_all_proc_addresses "
+        "EGL_ANDROID_presentation_time "
+        "EGL_KHR_swap_buffers_with_damage "
+        "EGL_ANDROID_get_native_client_buffer "
+        "EGL_ANDROID_front_buffer_auto_refresh "
+        "EGL_ANDROID_get_frame_timestamps "
+        "EGL_EXT_surface_SMPTE2086_metadata "
+        "EGL_EXT_surface_CTA861_3_metadata "
+        ;
+
+// Whitelist of extensions exposed to applications if implemented in the vendor driver.
+char const * const gExtensionString  =
+        "EGL_KHR_image "                        // mandatory
+        "EGL_KHR_image_base "                   // mandatory
+        "EGL_EXT_image_gl_colorspace "
+        "EGL_KHR_image_pixmap "
+        "EGL_KHR_lock_surface "
+        "EGL_KHR_gl_colorspace "
+        "EGL_KHR_gl_texture_2D_image "
+        "EGL_KHR_gl_texture_3D_image "
+        "EGL_KHR_gl_texture_cubemap_image "
+        "EGL_KHR_gl_renderbuffer_image "
+        "EGL_KHR_reusable_sync "
+        "EGL_KHR_fence_sync "
+        "EGL_KHR_create_context "
+        "EGL_KHR_config_attribs "
+        "EGL_KHR_surfaceless_context "
+        "EGL_KHR_stream "
+        "EGL_KHR_stream_fifo "
+        "EGL_KHR_stream_producer_eglsurface "
+        "EGL_KHR_stream_consumer_gltexture "
+        "EGL_KHR_stream_cross_process_fd "
+        "EGL_EXT_create_context_robustness "
+        "EGL_NV_system_time "
+        "EGL_ANDROID_image_native_buffer "      // mandatory
+        "EGL_KHR_wait_sync "                    // strongly recommended
+        "EGL_ANDROID_recordable "               // mandatory
+        "EGL_KHR_partial_update "               // strongly recommended
+        "EGL_EXT_pixel_format_float "
+        "EGL_EXT_buffer_age "                   // strongly recommended with partial_update
+        "EGL_KHR_create_context_no_error "
+        "EGL_KHR_mutable_render_buffer "
+        "EGL_EXT_yuv_surface "
+        "EGL_EXT_protected_content "
+        "EGL_IMG_context_priority "
+        "EGL_KHR_no_config_context "
+        ;
+// clang-format on
+
+// extensions not exposed to applications but used by the ANDROID system
+//      "EGL_ANDROID_blob_cache "               // strongly recommended
+//      "EGL_IMG_hibernate_process "            // optional
+//      "EGL_ANDROID_native_fence_sync "        // strongly recommended
+//      "EGL_ANDROID_framebuffer_target "       // mandatory for HWC 1.1
+
+/*
+ * EGL Extensions entry-points exposed to 3rd party applications
+ * (keep in sync with gExtensionString above)
+ *
+ */
+static const extention_map_t sExtensionMap[] = {
+    // EGL_KHR_lock_surface
+    { "eglLockSurfaceKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR },
+    { "eglUnlockSurfaceKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglUnlockSurfaceKHR },
+
+    // EGL_KHR_image, EGL_KHR_image_base
+    { "eglCreateImageKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglCreateImageKHR },
+    { "eglDestroyImageKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglDestroyImageKHR },
+
+    // EGL_KHR_reusable_sync, EGL_KHR_fence_sync
+    { "eglCreateSyncKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglCreateSyncKHR },
+    { "eglDestroySyncKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglDestroySyncKHR },
+    { "eglClientWaitSyncKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglClientWaitSyncKHR },
+    { "eglSignalSyncKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglSignalSyncKHR },
+    { "eglGetSyncAttribKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglGetSyncAttribKHR },
+
+    // EGL_NV_system_time
+    { "eglGetSystemTimeFrequencyNV",
+            (__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeFrequencyNV },
+    { "eglGetSystemTimeNV",
+            (__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeNV },
+
+    // EGL_KHR_wait_sync
+    { "eglWaitSyncKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglWaitSyncKHR },
+
+    // EGL_ANDROID_presentation_time
+    { "eglPresentationTimeANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglPresentationTimeANDROID },
+
+    // EGL_KHR_swap_buffers_with_damage
+    { "eglSwapBuffersWithDamageKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglSwapBuffersWithDamageKHR },
+
+    // EGL_ANDROID_get_native_client_buffer
+    { "eglGetNativeClientBufferANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglGetNativeClientBufferANDROID },
+
+    // EGL_KHR_partial_update
+    { "eglSetDamageRegionKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglSetDamageRegionKHR },
+
+    { "eglCreateStreamKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglCreateStreamKHR },
+    { "eglDestroyStreamKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglDestroyStreamKHR },
+    { "eglStreamAttribKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglStreamAttribKHR },
+    { "eglQueryStreamKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglQueryStreamKHR },
+    { "eglQueryStreamu64KHR",
+            (__eglMustCastToProperFunctionPointerType)&eglQueryStreamu64KHR },
+    { "eglQueryStreamTimeKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglQueryStreamTimeKHR },
+    { "eglCreateStreamProducerSurfaceKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglCreateStreamProducerSurfaceKHR },
+    { "eglStreamConsumerGLTextureExternalKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglStreamConsumerGLTextureExternalKHR },
+    { "eglStreamConsumerAcquireKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglStreamConsumerAcquireKHR },
+    { "eglStreamConsumerReleaseKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglStreamConsumerReleaseKHR },
+    { "eglGetStreamFileDescriptorKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglGetStreamFileDescriptorKHR },
+    { "eglCreateStreamFromFileDescriptorKHR",
+            (__eglMustCastToProperFunctionPointerType)&eglCreateStreamFromFileDescriptorKHR },
+
+    // EGL_ANDROID_get_frame_timestamps
+    { "eglGetNextFrameIdANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglGetNextFrameIdANDROID },
+    { "eglGetCompositorTimingANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglGetCompositorTimingANDROID },
+    { "eglGetCompositorTimingSupportedANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglGetCompositorTimingSupportedANDROID },
+    { "eglGetFrameTimestampsANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglGetFrameTimestampsANDROID },
+    { "eglGetFrameTimestampSupportedANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglGetFrameTimestampSupportedANDROID },
+
+    // EGL_ANDROID_native_fence_sync
+    { "eglDupNativeFenceFDANDROID",
+            (__eglMustCastToProperFunctionPointerType)&eglDupNativeFenceFDANDROID },
+};
+
+/*
+ * These extensions entry-points should not be exposed to applications.
+ * They're used internally by the Android EGL layer.
+ */
+#define FILTER_EXTENSIONS(procname) \
+        (!strcmp((procname), "eglSetBlobCacheFuncsANDROID") ||    \
+         !strcmp((procname), "eglHibernateProcessIMG")      ||    \
+         !strcmp((procname), "eglAwakenProcessIMG"))
+
+// accesses protected by sExtensionMapMutex
+static std::unordered_map<std::string, __eglMustCastToProperFunctionPointerType> sGLExtentionMap;
+
+static int sGLExtentionSlot = 0;
+static pthread_mutex_t sExtensionMapMutex = PTHREAD_MUTEX_INITIALIZER;
+
+static void(*findProcAddress(const char* name,
+        const extention_map_t* map, size_t n))() {
+    for (uint32_t i=0 ; i<n ; i++) {
+        if (!strcmp(name, map[i].name)) {
+            return map[i].address;
+        }
+    }
+    return nullptr;
 }
 
-EGLDisplay eglGetDisplay(EGLNativeDisplayType display) {
+// ----------------------------------------------------------------------------
+
+extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
+extern EGLBoolean egl_init_drivers();
+extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
+extern gl_hooks_t gHooksTrace;
+
+} // namespace android;
+
+
+// ----------------------------------------------------------------------------
+
+static inline void clearError() { egl_tls_t::clearError(); }
+static inline EGLContext getContext() { return egl_tls_t::getContext(); }
+
+// ----------------------------------------------------------------------------
+
+EGLDisplay eglGetDisplay(EGLNativeDisplayType display)
+{
     ATRACE_CALL();
     clearError();
 
+    uintptr_t index = reinterpret_cast<uintptr_t>(display);
+    if (index >= NUM_DISPLAYS) {
+        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
+    }
+
     if (egl_init_drivers() == EGL_FALSE) {
         return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
     }
 
-    // Call down the chain, which usually points directly to the impl
-    // but may also be routed through layers
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetDisplay(display);
+    EGLDisplay dpy = egl_display_t::getFromNativeDisplay(display);
+    return dpy;
 }
 
-EGLBoolean eglInitialize(EGLDisplay dpy, EGLint* major, EGLint* minor) {
+// ----------------------------------------------------------------------------
+// Initialization
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglInitialize(dpy, major, minor);
+    egl_display_ptr dp = get_display(dpy);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+
+    EGLBoolean res = dp->initialize(major, minor);
+
+    return res;
 }
 
-EGLBoolean eglTerminate(EGLDisplay dpy) {
+EGLBoolean eglTerminate(EGLDisplay dpy)
+{
+    // NOTE: don't unload the drivers b/c some APIs can be called
+    // after eglTerminate() has been called. eglTerminate() only
+    // terminates an EGLDisplay, not a EGL itself.
+
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglTerminate(dpy);
+    egl_display_ptr dp = get_display(dpy);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+
+    EGLBoolean res = dp->terminate();
+
+    return res;
 }
 
-EGLBoolean eglGetConfigs(EGLDisplay dpy, EGLConfig* configs, EGLint config_size,
-                         EGLint* num_config) {
+// ----------------------------------------------------------------------------
+// configuration
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglGetConfigs(   EGLDisplay dpy,
+                            EGLConfig *configs,
+                            EGLint config_size, EGLint *num_config)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    if (num_config==nullptr) {
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+    }
+
+    EGLBoolean res = EGL_FALSE;
+    *num_config = 0;
+
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetConfigs(dpy, configs, config_size, num_config);
+    if (cnx->dso) {
+        res = cnx->egl.eglGetConfigs(
+                dp->disp.dpy, configs, config_size, num_config);
+    }
+
+    return res;
 }
 
-EGLBoolean eglChooseConfig(EGLDisplay dpy, const EGLint* attrib_list, EGLConfig* configs,
-                           EGLint config_size, EGLint* num_config) {
+EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
+                            EGLConfig *configs, EGLint config_size,
+                            EGLint *num_config)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    if (num_config==nullptr) {
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+    }
+
+    EGLBoolean res = EGL_FALSE;
+    *num_config = 0;
+
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglChooseConfig(dpy, attrib_list, configs, config_size, num_config);
+    if (cnx->dso) {
+        if (attrib_list) {
+            char value[PROPERTY_VALUE_MAX];
+            property_get("debug.egl.force_msaa", value, "false");
+
+            if (!strcmp(value, "true")) {
+                size_t attribCount = 0;
+                EGLint attrib = attrib_list[0];
+
+                // Only enable MSAA if the context is OpenGL ES 2.0 and
+                // if no caveat is requested
+                const EGLint *attribRendererable = nullptr;
+                const EGLint *attribCaveat = nullptr;
+
+                // Count the number of attributes and look for
+                // EGL_RENDERABLE_TYPE and EGL_CONFIG_CAVEAT
+                while (attrib != EGL_NONE) {
+                    attrib = attrib_list[attribCount];
+                    switch (attrib) {
+                        case EGL_RENDERABLE_TYPE:
+                            attribRendererable = &attrib_list[attribCount];
+                            break;
+                        case EGL_CONFIG_CAVEAT:
+                            attribCaveat = &attrib_list[attribCount];
+                            break;
+                        default:
+                            break;
+                    }
+                    attribCount++;
+                }
+
+                if (attribRendererable && attribRendererable[1] == EGL_OPENGL_ES2_BIT &&
+                        (!attribCaveat || attribCaveat[1] != EGL_NONE)) {
+
+                    // Insert 2 extra attributes to force-enable MSAA 4x
+                    EGLint aaAttribs[attribCount + 4];
+                    aaAttribs[0] = EGL_SAMPLE_BUFFERS;
+                    aaAttribs[1] = 1;
+                    aaAttribs[2] = EGL_SAMPLES;
+                    aaAttribs[3] = 4;
+
+                    memcpy(&aaAttribs[4], attrib_list, attribCount * sizeof(EGLint));
+
+                    EGLint numConfigAA;
+                    EGLBoolean resAA = cnx->egl.eglChooseConfig(
+                            dp->disp.dpy, aaAttribs, configs, config_size, &numConfigAA);
+
+                    if (resAA == EGL_TRUE && numConfigAA > 0) {
+                        ALOGD("Enabling MSAA 4x");
+                        *num_config = numConfigAA;
+                        return resAA;
+                    }
+                }
+            }
+        }
+
+        res = cnx->egl.eglChooseConfig(
+                dp->disp.dpy, attrib_list, configs, config_size, num_config);
+    }
+    return res;
 }
 
-EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint* value) {
+EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
+        EGLint attribute, EGLint *value)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetConfigAttrib(dpy, config, attribute, value);
+    egl_connection_t* cnx = nullptr;
+    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
+    if (!dp) return EGL_FALSE;
+
+    return cnx->egl.eglGetConfigAttrib(
+            dp->disp.dpy, config, attribute, value);
 }
 
-EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config, NativeWindowType window,
-                                  const EGLint* attrib_list) {
-    clearError();
+// ----------------------------------------------------------------------------
+// surfaces
+// ----------------------------------------------------------------------------
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateWindowSurface(dpy, config, window, attrib_list);
+// Translates EGL color spaces to Android data spaces.
+static android_dataspace dataSpaceFromEGLColorSpace(EGLint colorspace) {
+    if (colorspace == EGL_GL_COLORSPACE_LINEAR_KHR) {
+        return HAL_DATASPACE_UNKNOWN;
+    } else if (colorspace == EGL_GL_COLORSPACE_SRGB_KHR) {
+        return HAL_DATASPACE_SRGB;
+    } else if (colorspace == EGL_GL_COLORSPACE_DISPLAY_P3_EXT) {
+        return HAL_DATASPACE_DISPLAY_P3;
+    } else if (colorspace == EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT) {
+        return HAL_DATASPACE_DISPLAY_P3_LINEAR;
+    } else if (colorspace == EGL_GL_COLORSPACE_SCRGB_EXT) {
+        return HAL_DATASPACE_V0_SCRGB;
+    } else if (colorspace == EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT) {
+        return HAL_DATASPACE_V0_SCRGB_LINEAR;
+    } else if (colorspace == EGL_GL_COLORSPACE_BT2020_LINEAR_EXT) {
+        return HAL_DATASPACE_BT2020_LINEAR;
+    } else if (colorspace == EGL_GL_COLORSPACE_BT2020_PQ_EXT) {
+        return HAL_DATASPACE_BT2020_PQ;
+    }
+    return HAL_DATASPACE_UNKNOWN;
 }
 
-EGLSurface eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap,
-                                  const EGLint* attrib_list) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreatePixmapSurface(dpy, config, pixmap, attrib_list);
+// Get the colorspace value that should be reported from queries. When the colorspace
+// is unknown (no attribute passed), default to reporting LINEAR.
+static EGLint getReportedColorSpace(EGLint colorspace) {
+    return colorspace == EGL_UNKNOWN ? EGL_GL_COLORSPACE_LINEAR_KHR : colorspace;
 }
 
-EGLSurface eglCreatePbufferSurface(EGLDisplay dpy, EGLConfig config, const EGLint* attrib_list) {
-    clearError();
+// Returns a list of color spaces understood by the vendor EGL driver.
+static std::vector<EGLint> getDriverColorSpaces(egl_display_ptr dp,
+                                                android_pixel_format format) {
+    std::vector<EGLint> colorSpaces;
+    if (!dp->hasColorSpaceSupport) return colorSpaces;
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreatePbufferSurface(dpy, config, attrib_list);
+    // OpenGL drivers only support sRGB encoding with 8-bit formats.
+    // RGB_888 is never returned by getNativePixelFormat, but is included for completeness.
+    const bool formatSupportsSRGBEncoding =
+        format == HAL_PIXEL_FORMAT_RGBA_8888 || format == HAL_PIXEL_FORMAT_RGBX_8888 ||
+        format == HAL_PIXEL_FORMAT_RGB_888;
+    const bool formatIsFloatingPoint = format == HAL_PIXEL_FORMAT_RGBA_FP16;
+
+    if (formatSupportsSRGBEncoding) {
+        // sRGB and linear are always supported when color space support is present.
+        colorSpaces.push_back(EGL_GL_COLORSPACE_SRGB_KHR);
+        colorSpaces.push_back(EGL_GL_COLORSPACE_LINEAR_KHR);
+        // DCI-P3 uses the sRGB transfer function, so it's only relevant for 8-bit formats.
+        if (findExtension(dp->disp.queryString.extensions,
+                              "EGL_EXT_gl_colorspace_display_p3")) {
+            colorSpaces.push_back(EGL_GL_COLORSPACE_DISPLAY_P3_EXT);
+        }
+    }
+
+    // According to the spec, scRGB is only supported for floating point formats.
+    // For non-linear scRGB, the application is responsible for applying the
+    // transfer function.
+    if (formatIsFloatingPoint) {
+        if (findExtension(dp->disp.queryString.extensions,
+                  "EGL_EXT_gl_colorspace_scrgb")) {
+            colorSpaces.push_back(EGL_GL_COLORSPACE_SCRGB_EXT);
+        }
+        if (findExtension(dp->disp.queryString.extensions,
+                  "EGL_EXT_gl_colorspace_scrgb_linear")) {
+            colorSpaces.push_back(EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT);
+        }
+    }
+
+    // BT2020 can be used with any pixel format. PQ encoding must be applied by the
+    // application and does not affect the behavior of OpenGL.
+    if (findExtension(dp->disp.queryString.extensions,
+                          "EGL_EXT_gl_colorspace_bt2020_linear")) {
+        colorSpaces.push_back(EGL_GL_COLORSPACE_BT2020_LINEAR_EXT);
+    }
+    if (findExtension(dp->disp.queryString.extensions,
+                          "EGL_EXT_gl_colorspace_bt2020_pq")) {
+        colorSpaces.push_back(EGL_GL_COLORSPACE_BT2020_PQ_EXT);
+    }
+
+    // Linear DCI-P3 simply uses different primaries than standard RGB and thus
+    // can be used with any pixel format.
+    if (findExtension(dp->disp.queryString.extensions,
+                          "EGL_EXT_gl_colorspace_display_p3_linear")) {
+        colorSpaces.push_back(EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT);
+    }
+    return colorSpaces;
 }
 
-EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface) {
-    clearError();
+// Cleans up color space related parameters that the driver does not understand.
+// If there is no color space attribute in attrib_list, colorSpace is left
+// unmodified.
+static EGLBoolean processAttributes(egl_display_ptr dp, NativeWindowType window,
+                                    android_pixel_format format, const EGLint* attrib_list,
+                                    EGLint* colorSpace,
+                                    std::vector<EGLint>* strippedAttribList) {
+    for (const EGLint* attr = attrib_list; attr && attr[0] != EGL_NONE; attr += 2) {
+        bool copyAttribute = true;
+        if (attr[0] == EGL_GL_COLORSPACE_KHR) {
+            // Fail immediately if the driver doesn't have color space support at all.
+            if (!dp->hasColorSpaceSupport) return false;
+            *colorSpace = attr[1];
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglDestroySurface(dpy, surface);
+            // Strip the attribute if the driver doesn't understand it.
+            copyAttribute = false;
+            std::vector<EGLint> driverColorSpaces = getDriverColorSpaces(dp, format);
+            for (auto driverColorSpace : driverColorSpaces) {
+                if (attr[1] == driverColorSpace) {
+                    copyAttribute = true;
+                    break;
+                }
+            }
+
+            // If the driver doesn't understand it, we should map sRGB-encoded P3 to
+            // sRGB rather than just dropping the colorspace on the floor.
+            // For this format, the driver is expected to apply the sRGB
+            // transfer function during framebuffer operations.
+            if (!copyAttribute && attr[1] == EGL_GL_COLORSPACE_DISPLAY_P3_EXT) {
+                strippedAttribList->push_back(attr[0]);
+                strippedAttribList->push_back(EGL_GL_COLORSPACE_SRGB_KHR);
+            }
+        }
+        if (copyAttribute) {
+            strippedAttribList->push_back(attr[0]);
+            strippedAttribList->push_back(attr[1]);
+        }
+    }
+    // Terminate the attribute list.
+    strippedAttribList->push_back(EGL_NONE);
+
+    // If the passed color space has wide color gamut, check whether the target native window
+    // supports wide color.
+    const bool colorSpaceIsNarrow =
+        *colorSpace == EGL_GL_COLORSPACE_SRGB_KHR ||
+        *colorSpace == EGL_GL_COLORSPACE_LINEAR_KHR ||
+        *colorSpace == EGL_UNKNOWN;
+    if (window && !colorSpaceIsNarrow) {
+        bool windowSupportsWideColor = true;
+        // Ordinarily we'd put a call to native_window_get_wide_color_support
+        // at the beginning of the function so that we'll have the
+        // result when needed elsewhere in the function.
+        // However, because eglCreateWindowSurface is called by SurfaceFlinger and
+        // SurfaceFlinger is required to answer the call below we would
+        // end up in a deadlock situation. By moving the call to only happen
+        // if the application has specifically asked for wide-color we avoid
+        // the deadlock with SurfaceFlinger since it will not ask for a
+        // wide-color surface.
+        int err = native_window_get_wide_color_support(window, &windowSupportsWideColor);
+
+        if (err) {
+            ALOGE("processAttributes: invalid window (win=%p) "
+                  "failed (%#x) (already connected to another API?)",
+                  window, err);
+            return false;
+        }
+        if (!windowSupportsWideColor) {
+            // Application has asked for a wide-color colorspace but
+            // wide-color support isn't available on the display the window is on.
+            return false;
+        }
+    }
+    return true;
 }
 
-EGLBoolean eglQuerySurface(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint* value) {
+// Gets the native pixel format corrsponding to the passed EGLConfig.
+void getNativePixelFormat(EGLDisplay dpy, egl_connection_t* cnx, EGLConfig config,
+                          android_pixel_format* format) {
+    // Set the native window's buffers format to match what this config requests.
+    // Whether to use sRGB gamma is not part of the EGLconfig, but is part
+    // of our native format. So if sRGB gamma is requested, we have to
+    // modify the EGLconfig's format before setting the native window's
+    // format.
+
+    EGLint componentType = EGL_COLOR_COMPONENT_TYPE_FIXED_EXT;
+    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_COLOR_COMPONENT_TYPE_EXT, &componentType);
+
+    EGLint a = 0;
+    EGLint r, g, b;
+    r = g = b = 0;
+    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_RED_SIZE, &r);
+    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_GREEN_SIZE, &g);
+    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_BLUE_SIZE, &b);
+    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_ALPHA_SIZE, &a);
+    EGLint colorDepth = r + g + b;
+
+    // Today, the driver only understands sRGB and linear on 888X
+    // formats. Strip other colorspaces from the attribute list and
+    // only use them to set the dataspace via
+    // native_window_set_buffers_dataspace
+    // if pixel format is RGBX 8888
+    //    TBD: Can test for future extensions that indicate that driver
+    //    handles requested color space and we can let it through.
+    //    allow SRGB and LINEAR. All others need to be stripped.
+    // else if 565, 4444
+    //    TBD: Can we assume these are supported if 8888 is?
+    // else if FP16 or 1010102
+    //    strip colorspace from attribs.
+    // endif
+    if (a == 0) {
+        if (colorDepth <= 16) {
+            *format = HAL_PIXEL_FORMAT_RGB_565;
+        } else {
+            if (componentType == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT) {
+                if (colorDepth > 24) {
+                    *format = HAL_PIXEL_FORMAT_RGBA_1010102;
+                } else {
+                    *format = HAL_PIXEL_FORMAT_RGBX_8888;
+                }
+            } else {
+                *format = HAL_PIXEL_FORMAT_RGBA_FP16;
+            }
+        }
+    } else {
+        if (componentType == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT) {
+            if (colorDepth > 24) {
+                *format = HAL_PIXEL_FORMAT_RGBA_1010102;
+            } else {
+                *format = HAL_PIXEL_FORMAT_RGBA_8888;
+            }
+        } else {
+            *format = HAL_PIXEL_FORMAT_RGBA_FP16;
+        }
+    }
+}
+
+EGLBoolean sendSurfaceMetadata(egl_surface_t* s) {
+    android_smpte2086_metadata smpteMetadata;
+    if (s->getSmpte2086Metadata(smpteMetadata)) {
+        int err =
+                native_window_set_buffers_smpte2086_metadata(s->getNativeWindow(), &smpteMetadata);
+        s->resetSmpte2086Metadata();
+        if (err != 0) {
+            ALOGE("error setting native window smpte2086 metadata: %s (%d)",
+                  strerror(-err), err);
+            return EGL_FALSE;
+        }
+    }
+    android_cta861_3_metadata cta8613Metadata;
+    if (s->getCta8613Metadata(cta8613Metadata)) {
+        int err =
+                native_window_set_buffers_cta861_3_metadata(s->getNativeWindow(), &cta8613Metadata);
+        s->resetCta8613Metadata();
+        if (err != 0) {
+            ALOGE("error setting native window CTS 861.3 metadata: %s (%d)",
+                  strerror(-err), err);
+            return EGL_FALSE;
+        }
+    }
+    return EGL_TRUE;
+}
+
+EGLSurface eglCreateWindowSurface(  EGLDisplay dpy, EGLConfig config,
+                                    NativeWindowType window,
+                                    const EGLint *attrib_list)
+{
+    const EGLint *origAttribList = attrib_list;
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQuerySurface(dpy, surface, attribute, value);
+    egl_connection_t* cnx = nullptr;
+    egl_display_ptr dp = validate_display_connection(dpy, cnx);
+    if (dp) {
+        if (!window) {
+            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+        }
+
+        int value = 0;
+        window->query(window, NATIVE_WINDOW_IS_VALID, &value);
+        if (!value) {
+            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+        }
+
+        // NOTE: When using Vulkan backend, the Vulkan runtime makes all the
+        // native_window_* calls, so don't do them here.
+        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+            int result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL);
+            if (result < 0) {
+                ALOGE("eglCreateWindowSurface: native_window_api_connect (win=%p) "
+                      "failed (%#x) (already connected to another API?)",
+                      window, result);
+                return setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+            }
+        }
+
+        EGLDisplay iDpy = dp->disp.dpy;
+        android_pixel_format format;
+        getNativePixelFormat(iDpy, cnx, config, &format);
+
+        // now select correct colorspace and dataspace based on user's attribute list
+        EGLint colorSpace = EGL_UNKNOWN;
+        std::vector<EGLint> strippedAttribList;
+        if (!processAttributes(dp, window, format, attrib_list, &colorSpace,
+                               &strippedAttribList)) {
+            ALOGE("error invalid colorspace: %d", colorSpace);
+            return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
+        }
+        attrib_list = strippedAttribList.data();
+
+        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+            int err = native_window_set_buffers_format(window, format);
+            if (err != 0) {
+                ALOGE("error setting native window pixel format: %s (%d)",
+                      strerror(-err), err);
+                native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+                return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+            }
+
+            android_dataspace dataSpace = dataSpaceFromEGLColorSpace(colorSpace);
+            if (dataSpace != HAL_DATASPACE_UNKNOWN) {
+                err = native_window_set_buffers_data_space(window, dataSpace);
+                if (err != 0) {
+                    ALOGE("error setting native window pixel dataSpace: %s (%d)", strerror(-err),
+                          err);
+                    native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+                    return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+                }
+            }
+        }
+
+        // the EGL spec requires that a new EGLSurface default to swap interval
+        // 1, so explicitly set that on the window here.
+        ANativeWindow* anw = reinterpret_cast<ANativeWindow*>(window);
+        anw->setSwapInterval(anw, 1);
+
+        EGLSurface surface = cnx->egl.eglCreateWindowSurface(
+                iDpy, config, window, attrib_list);
+        if (surface != EGL_NO_SURFACE) {
+            egl_surface_t* s =
+                    new egl_surface_t(dp.get(), config, window, surface,
+                                      getReportedColorSpace(colorSpace), cnx);
+            return s;
+        }
+
+        // EGLSurface creation failed
+        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+            native_window_set_buffers_format(window, 0);
+            native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+        }
+    }
+    return EGL_NO_SURFACE;
+}
+
+EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
+                                    NativePixmapType pixmap,
+                                    const EGLint *attrib_list)
+{
+    clearError();
+
+    egl_connection_t* cnx = nullptr;
+    egl_display_ptr dp = validate_display_connection(dpy, cnx);
+    if (dp) {
+        EGLDisplay iDpy = dp->disp.dpy;
+        android_pixel_format format;
+        getNativePixelFormat(iDpy, cnx, config, &format);
+
+        // now select a corresponding sRGB format if needed
+        EGLint colorSpace = EGL_UNKNOWN;
+        std::vector<EGLint> strippedAttribList;
+        if (!processAttributes(dp, nullptr, format, attrib_list, &colorSpace,
+                               &strippedAttribList)) {
+            ALOGE("error invalid colorspace: %d", colorSpace);
+            return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
+        }
+        attrib_list = strippedAttribList.data();
+
+        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
+                dp->disp.dpy, config, pixmap, attrib_list);
+        if (surface != EGL_NO_SURFACE) {
+            egl_surface_t* s =
+                    new egl_surface_t(dp.get(), config, nullptr, surface,
+                                      getReportedColorSpace(colorSpace), cnx);
+            return s;
+        }
+    }
+    return EGL_NO_SURFACE;
+}
+
+EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
+                                    const EGLint *attrib_list)
+{
+    clearError();
+
+    egl_connection_t* cnx = nullptr;
+    egl_display_ptr dp = validate_display_connection(dpy, cnx);
+    if (dp) {
+        EGLDisplay iDpy = dp->disp.dpy;
+        android_pixel_format format;
+        getNativePixelFormat(iDpy, cnx, config, &format);
+
+        // Select correct colorspace based on user's attribute list
+        EGLint colorSpace = EGL_UNKNOWN;
+        std::vector<EGLint> strippedAttribList;
+        if (!processAttributes(dp, nullptr, format, attrib_list, &colorSpace,
+                               &strippedAttribList)) {
+            ALOGE("error invalid colorspace: %d", colorSpace);
+            return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
+        }
+        attrib_list = strippedAttribList.data();
+
+        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
+                dp->disp.dpy, config, attrib_list);
+        if (surface != EGL_NO_SURFACE) {
+            egl_surface_t* s =
+                    new egl_surface_t(dp.get(), config, nullptr, surface,
+                                      getReportedColorSpace(colorSpace), cnx);
+            return s;
+        }
+    }
+    return EGL_NO_SURFACE;
+}
+
+EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t * const s = get_surface(surface);
+    EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
+    if (result == EGL_TRUE) {
+        _s.terminate();
+    }
+    return result;
+}
+
+EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
+                            EGLint attribute, EGLint *value)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t const * const s = get_surface(surface);
+    if (s->getColorSpaceAttribute(attribute, value)) {
+        return EGL_TRUE;
+    } else if (s->getSmpte2086Attribute(attribute, value)) {
+        return EGL_TRUE;
+    } else if (s->getCta8613Attribute(attribute, value)) {
+        return EGL_TRUE;
+    }
+    return s->cnx->egl.eglQuerySurface(dp->disp.dpy, s->surface, attribute, value);
 }
 
 void EGLAPI eglBeginFrame(EGLDisplay dpy, EGLSurface surface) {
     ATRACE_CALL();
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    cnx->platform.eglBeginFrame(dpy, surface);
-}
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return;
+    }
 
-EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_list,
-                            const EGLint* attrib_list) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateContext(dpy, config, share_list, attrib_list);
-}
-
-EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglDestroyContext(dpy, ctx);
-}
-
-EGLBoolean eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglMakeCurrent(dpy, draw, read, ctx);
-}
-
-EGLBoolean eglQueryContext(EGLDisplay dpy, EGLContext ctx, EGLint attribute, EGLint* value) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryContext(dpy, ctx, attribute, value);
-}
-
-EGLContext eglGetCurrentContext(void) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetCurrentContext();
-}
-
-EGLSurface eglGetCurrentSurface(EGLint readdraw) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetCurrentSurface(readdraw);
-}
-
-EGLDisplay eglGetCurrentDisplay(void) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetCurrentDisplay();
-}
-
-EGLBoolean eglWaitGL(void) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglWaitGL();
-}
-
-EGLBoolean eglWaitNative(EGLint engine) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglWaitNative(engine);
-}
-
-EGLint eglGetError(void) {
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->platform.eglGetError) {
-        return cnx->platform.eglGetError();
-    } else {
-        return egl_tls_t::getError();
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        setError(EGL_BAD_SURFACE, EGL_FALSE);
     }
 }
 
-__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char* procname) {
+// ----------------------------------------------------------------------------
+// Contexts
+// ----------------------------------------------------------------------------
+
+EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
+                            EGLContext share_list, const EGLint *attrib_list)
+{
+    clearError();
+
+    egl_connection_t* cnx = nullptr;
+    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
+    if (dp) {
+        if (share_list != EGL_NO_CONTEXT) {
+            if (!ContextRef(dp.get(), share_list).get()) {
+                return setError(EGL_BAD_CONTEXT, EGL_NO_CONTEXT);
+            }
+            egl_context_t* const c = get_context(share_list);
+            share_list = c->context;
+        }
+        EGLContext context = cnx->egl.eglCreateContext(
+                dp->disp.dpy, config, share_list, attrib_list);
+        if (context != EGL_NO_CONTEXT) {
+            // figure out if it's a GLESv1 or GLESv2
+            int version = 0;
+            if (attrib_list) {
+                while (*attrib_list != EGL_NONE) {
+                    GLint attr = *attrib_list++;
+                    GLint value = *attrib_list++;
+                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
+                        if (value == 1) {
+                            version = egl_connection_t::GLESv1_INDEX;
+                        } else if (value == 2 || value == 3) {
+                            version = egl_connection_t::GLESv2_INDEX;
+                        }
+                    }
+                };
+            }
+            egl_context_t* c = new egl_context_t(dpy, context, config, cnx,
+                    version);
+            return c;
+        }
+    }
+    return EGL_NO_CONTEXT;
+}
+
+EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp)
+        return EGL_FALSE;
+
+    ContextRef _c(dp.get(), ctx);
+    if (!_c.get())
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
+
+    egl_context_t * const c = get_context(ctx);
+    EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
+    if (result == EGL_TRUE) {
+        _c.terminate();
+    }
+    return result;
+}
+
+EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
+                            EGLSurface read, EGLContext ctx)
+{
+    clearError();
+
+    egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+
+    // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
+    // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
+    // a valid but uninitialized display.
+    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
+         (draw != EGL_NO_SURFACE) ) {
+        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
+    }
+
+    // get a reference to the object passed in
+    ContextRef _c(dp.get(), ctx);
+    SurfaceRef _d(dp.get(), draw);
+    SurfaceRef _r(dp.get(), read);
+
+    // validate the context (if not EGL_NO_CONTEXT)
+    if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
+        // EGL_NO_CONTEXT is valid
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
+    }
+
+    // these are the underlying implementation's object
+    EGLContext impl_ctx  = EGL_NO_CONTEXT;
+    EGLSurface impl_draw = EGL_NO_SURFACE;
+    EGLSurface impl_read = EGL_NO_SURFACE;
+
+    // these are our objects structs passed in
+    egl_context_t       * c = nullptr;
+    egl_surface_t const * d = nullptr;
+    egl_surface_t const * r = nullptr;
+
+    // these are the current objects structs
+    egl_context_t * cur_c = get_context(getContext());
+
+    if (ctx != EGL_NO_CONTEXT) {
+        c = get_context(ctx);
+        impl_ctx = c->context;
+    } else {
+        // no context given, use the implementation of the current context
+        if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
+            // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
+            return setError(EGL_BAD_MATCH, (EGLBoolean)EGL_FALSE);
+        }
+        if (cur_c == nullptr) {
+            // no current context
+            // not an error, there is just no current context.
+            return EGL_TRUE;
+        }
+    }
+
+    // retrieve the underlying implementation's draw EGLSurface
+    if (draw != EGL_NO_SURFACE) {
+        if (!_d.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        d = get_surface(draw);
+        impl_draw = d->surface;
+    }
+
+    // retrieve the underlying implementation's read EGLSurface
+    if (read != EGL_NO_SURFACE) {
+        if (!_r.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        r = get_surface(read);
+        impl_read = r->surface;
+    }
+
+
+    EGLBoolean result = dp->makeCurrent(c, cur_c,
+            draw, read, ctx,
+            impl_draw, impl_read, impl_ctx);
+
+    if (result == EGL_TRUE) {
+        if (c) {
+            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
+            egl_tls_t::setContext(ctx);
+            _c.acquire();
+            _r.acquire();
+            _d.acquire();
+        } else {
+            setGLHooksThreadSpecific(&gHooksNoContext);
+            egl_tls_t::setContext(EGL_NO_CONTEXT);
+        }
+    } else {
+        // this will ALOGE the error
+        egl_connection_t* const cnx = &gEGLImpl;
+        result = setError(cnx->egl.eglGetError(), (EGLBoolean)EGL_FALSE);
+    }
+    return result;
+}
+
+
+EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
+                            EGLint attribute, EGLint *value)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    ContextRef _c(dp.get(), ctx);
+    if (!_c.get()) return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
+
+    egl_context_t * const c = get_context(ctx);
+    return c->cnx->egl.eglQueryContext(
+            dp->disp.dpy, c->context, attribute, value);
+
+}
+
+EGLContext eglGetCurrentContext(void)
+{
+    // could be called before eglInitialize(), but we wouldn't have a context
+    // then, and this function would correctly return EGL_NO_CONTEXT.
+
+    clearError();
+
+    EGLContext ctx = getContext();
+    return ctx;
+}
+
+EGLSurface eglGetCurrentSurface(EGLint readdraw)
+{
+    // could be called before eglInitialize(), but we wouldn't have a context
+    // then, and this function would correctly return EGL_NO_SURFACE.
+
+    clearError();
+
+    EGLContext ctx = getContext();
+    if (ctx) {
+        egl_context_t const * const c = get_context(ctx);
+        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
+        switch (readdraw) {
+            case EGL_READ: return c->read;
+            case EGL_DRAW: return c->draw;
+            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
+        }
+    }
+    return EGL_NO_SURFACE;
+}
+
+EGLDisplay eglGetCurrentDisplay(void)
+{
+    // could be called before eglInitialize(), but we wouldn't have a context
+    // then, and this function would correctly return EGL_NO_DISPLAY.
+
+    clearError();
+
+    EGLContext ctx = getContext();
+    if (ctx) {
+        egl_context_t const * const c = get_context(ctx);
+        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
+        return c->dpy;
+    }
+    return EGL_NO_DISPLAY;
+}
+
+EGLBoolean eglWaitGL(void)
+{
+    clearError();
+
+    egl_connection_t* const cnx = &gEGLImpl;
+    if (!cnx->dso)
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
+
+    return cnx->egl.eglWaitGL();
+}
+
+EGLBoolean eglWaitNative(EGLint engine)
+{
+    clearError();
+
+    egl_connection_t* const cnx = &gEGLImpl;
+    if (!cnx->dso)
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
+
+    return cnx->egl.eglWaitNative(engine);
+}
+
+EGLint eglGetError(void)
+{
+    EGLint err = EGL_SUCCESS;
+    egl_connection_t* const cnx = &gEGLImpl;
+    if (cnx->dso) {
+        err = cnx->egl.eglGetError();
+    }
+    if (err == EGL_SUCCESS) {
+        err = egl_tls_t::getError();
+    }
+    return err;
+}
+
+static __eglMustCastToProperFunctionPointerType findBuiltinWrapper(
+        const char* procname) {
+    const egl_connection_t* cnx = &gEGLImpl;
+    void* proc = nullptr;
+
+    proc = dlsym(cnx->libEgl, procname);
+    if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
+
+    proc = dlsym(cnx->libGles2, procname);
+    if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
+
+    proc = dlsym(cnx->libGles1, procname);
+    if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
+
+    return nullptr;
+}
+
+__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
+{
     // eglGetProcAddress() could be the very first function called
     // in which case we must make sure we've initialized ourselves, this
     // happens the first time egl_get_display() is called.
@@ -216,87 +1203,436 @@
 
     if (egl_init_drivers() == EGL_FALSE) {
         setError(EGL_BAD_PARAMETER, NULL);
+        return  nullptr;
+    }
+
+    if (FILTER_EXTENSIONS(procname)) {
         return nullptr;
     }
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetProcAddress(procname);
+    __eglMustCastToProperFunctionPointerType addr;
+    addr = findProcAddress(procname, sExtensionMap, NELEM(sExtensionMap));
+    if (addr) return addr;
+
+    addr = findBuiltinWrapper(procname);
+    if (addr) return addr;
+
+    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
+    pthread_mutex_lock(&sExtensionMapMutex);
+
+        /*
+         * Since eglGetProcAddress() is not associated to anything, it needs
+         * to return a function pointer that "works" regardless of what
+         * the current context is.
+         *
+         * For this reason, we return a "forwarder", a small stub that takes
+         * care of calling the function associated with the context
+         * currently bound.
+         *
+         * We first look for extensions we've already resolved, if we're seeing
+         * this extension for the first time, we go through all our
+         * implementations and call eglGetProcAddress() and record the
+         * result in the appropriate implementation hooks and return the
+         * address of the forwarder corresponding to that hook set.
+         *
+         */
+
+        const std::string name(procname);
+
+    auto& extentionMap = sGLExtentionMap;
+    auto pos = extentionMap.find(name);
+        addr = (pos != extentionMap.end()) ? pos->second : nullptr;
+        const int slot = sGLExtentionSlot;
+
+        ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
+                "no more slots for eglGetProcAddress(\"%s\")",
+                procname);
+
+        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
+            bool found = false;
+
+            egl_connection_t* const cnx = &gEGLImpl;
+            if (cnx->dso && cnx->egl.eglGetProcAddress) {
+                // Extensions are independent of the bound context
+                addr =
+                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
+                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] =
+                        cnx->egl.eglGetProcAddress(procname);
+                if (addr) found = true;
+            }
+
+            if (found) {
+                addr = gExtensionForwarders[slot];
+                extentionMap[name] = addr;
+                sGLExtentionSlot++;
+            }
+        }
+
+    pthread_mutex_unlock(&sExtensionMapMutex);
+    return addr;
 }
 
-EGLBoolean eglSwapBuffersWithDamageKHR(EGLDisplay dpy, EGLSurface draw, EGLint* rects,
-                                       EGLint n_rects) {
+class FrameCompletionThread {
+public:
+
+    static void queueSync(EGLSyncKHR sync) {
+        static FrameCompletionThread thread;
+
+        char name[64];
+
+        std::lock_guard<std::mutex> lock(thread.mMutex);
+        snprintf(name, sizeof(name), "kicked off frame %u", (unsigned int)thread.mFramesQueued);
+        ATRACE_NAME(name);
+
+        thread.mQueue.push_back(sync);
+        thread.mCondition.notify_one();
+        thread.mFramesQueued++;
+        ATRACE_INT("GPU Frames Outstanding", int32_t(thread.mQueue.size()));
+    }
+
+private:
+
+    FrameCompletionThread() : mFramesQueued(0), mFramesCompleted(0) {
+        std::thread thread(&FrameCompletionThread::loop, this);
+        thread.detach();
+    }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wmissing-noreturn"
+    void loop() {
+        while (true) {
+            threadLoop();
+        }
+    }
+#pragma clang diagnostic pop
+
+    void threadLoop() {
+        EGLSyncKHR sync;
+        uint32_t frameNum;
+        {
+            std::unique_lock<std::mutex> lock(mMutex);
+            while (mQueue.empty()) {
+                mCondition.wait(lock);
+            }
+            sync = mQueue[0];
+            frameNum = mFramesCompleted;
+        }
+        EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+        {
+            char name[64];
+            snprintf(name, sizeof(name), "waiting for frame %u", (unsigned int)frameNum);
+            ATRACE_NAME(name);
+
+            EGLint result = eglClientWaitSyncKHR(dpy, sync, 0, EGL_FOREVER_KHR);
+            if (result == EGL_FALSE) {
+                ALOGE("FrameCompletion: error waiting for fence: %#x", eglGetError());
+            } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
+                ALOGE("FrameCompletion: timeout waiting for fence");
+            }
+            eglDestroySyncKHR(dpy, sync);
+        }
+        {
+            std::lock_guard<std::mutex> lock(mMutex);
+            mQueue.pop_front();
+            mFramesCompleted++;
+            ATRACE_INT("GPU Frames Outstanding", int32_t(mQueue.size()));
+        }
+    }
+
+    uint32_t mFramesQueued;
+    uint32_t mFramesCompleted;
+    std::deque<EGLSyncKHR> mQueue;
+    std::condition_variable mCondition;
+    std::mutex mMutex;
+};
+
+EGLBoolean eglSwapBuffersWithDamageKHR(EGLDisplay dpy, EGLSurface draw,
+        EGLint *rects, EGLint n_rects)
+{
     ATRACE_CALL();
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglSwapBuffersWithDamageKHR(dpy, draw, rects, n_rects);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), draw);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t* const s = get_surface(draw);
+
+    if (CC_UNLIKELY(dp->traceGpuCompletion)) {
+        EGLSyncKHR sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, nullptr);
+        if (sync != EGL_NO_SYNC_KHR) {
+            FrameCompletionThread::queueSync(sync);
+        }
+    }
+
+    if (CC_UNLIKELY(dp->finishOnSwap)) {
+        uint32_t pixel;
+        egl_context_t * const c = get_context( egl_tls_t::getContext() );
+        if (c) {
+            // glReadPixels() ensures that the frame is complete
+            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
+                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
+        }
+    }
+
+    if (s->cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+        if (!sendSurfaceMetadata(s)) {
+            native_window_api_disconnect(s->getNativeWindow(), NATIVE_WINDOW_API_EGL);
+            return setError(EGL_BAD_NATIVE_WINDOW, (EGLBoolean)EGL_FALSE);
+        }
+    }
+
+    if (n_rects == 0) {
+        return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
+    }
+
+    std::vector<android_native_rect_t> androidRects((size_t)n_rects);
+    for (int r = 0; r < n_rects; ++r) {
+        int offset = r * 4;
+        int x = rects[offset];
+        int y = rects[offset + 1];
+        int width = rects[offset + 2];
+        int height = rects[offset + 3];
+        android_native_rect_t androidRect;
+        androidRect.left = x;
+        androidRect.top = y + height;
+        androidRect.right = x + width;
+        androidRect.bottom = y;
+        androidRects.push_back(androidRect);
+    }
+    if (s->cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+        native_window_set_surface_damage(s->getNativeWindow(), androidRects.data(),
+                                         androidRects.size());
+    }
+
+    if (s->cnx->egl.eglSwapBuffersWithDamageKHR) {
+        return s->cnx->egl.eglSwapBuffersWithDamageKHR(dp->disp.dpy, s->surface,
+                rects, n_rects);
+    } else {
+        return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
+    }
 }
 
-EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface) {
-    ATRACE_CALL();
+EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
+{
+    return eglSwapBuffersWithDamageKHR(dpy, surface, nullptr, 0);
+}
+
+EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
+                            NativePixmapType target)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t const * const s = get_surface(surface);
+    return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
+}
+
+const char* eglQueryString(EGLDisplay dpy, EGLint name)
+{
+    clearError();
+
+    // Generate an error quietly when client extensions (as defined by
+    // EGL_EXT_client_extensions) are queried.  We do not want to rely on
+    // validate_display to generate the error as validate_display would log
+    // the error, which can be misleading.
+    //
+    // If we want to support EGL_EXT_client_extensions later, we can return
+    // the client extension string here instead.
+    if (dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
+        return setErrorQuiet(EGL_BAD_DISPLAY, (const char*)nullptr);
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return (const char *) nullptr;
+
+    switch (name) {
+        case EGL_VENDOR:
+            return dp->getVendorString();
+        case EGL_VERSION:
+            return dp->getVersionString();
+        case EGL_EXTENSIONS:
+            return dp->getExtensionString();
+        case EGL_CLIENT_APIS:
+            return dp->getClientApiString();
+        default:
+            break;
+    }
+    return setError(EGL_BAD_PARAMETER, (const char *)nullptr);
+}
+
+extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return (const char *) nullptr;
+
+    switch (name) {
+        case EGL_VENDOR:
+            return dp->disp.queryString.vendor;
+        case EGL_VERSION:
+            return dp->disp.queryString.version;
+        case EGL_EXTENSIONS:
+            return dp->disp.queryString.extensions;
+        case EGL_CLIENT_APIS:
+            return dp->disp.queryString.clientApi;
+        default:
+            break;
+    }
+    return setError(EGL_BAD_PARAMETER, (const char *)nullptr);
+}
+
+// ----------------------------------------------------------------------------
+// EGL 1.1
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglSurfaceAttrib(
+        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t * const s = get_surface(surface);
+
+    if (attribute == EGL_FRONT_BUFFER_AUTO_REFRESH_ANDROID) {
+        if (!s->getNativeWindow()) {
+            setError(EGL_BAD_SURFACE, EGL_FALSE);
+        }
+        int err = native_window_set_auto_refresh(s->getNativeWindow(), value != 0);
+        return (err == 0) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    if (attribute == EGL_TIMESTAMPS_ANDROID) {
+        if (!s->getNativeWindow()) {
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        }
+        int err = native_window_enable_frame_timestamps(s->getNativeWindow(), value != 0);
+        return (err == 0) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    if (s->setSmpte2086Attribute(attribute, value)) {
+        return EGL_TRUE;
+    } else if (s->setCta8613Attribute(attribute, value)) {
+        return EGL_TRUE;
+    } else if (s->cnx->egl.eglSurfaceAttrib) {
+        return s->cnx->egl.eglSurfaceAttrib(
+                dp->disp.dpy, s->surface, attribute, value);
+    }
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+}
+
+EGLBoolean eglBindTexImage(
+        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t const * const s = get_surface(surface);
+    if (s->cnx->egl.eglBindTexImage) {
+        return s->cnx->egl.eglBindTexImage(
+                dp->disp.dpy, s->surface, buffer);
+    }
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+}
+
+EGLBoolean eglReleaseTexImage(
+        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t const * const s = get_surface(surface);
+    if (s->cnx->egl.eglReleaseTexImage) {
+        return s->cnx->egl.eglReleaseTexImage(
+                dp->disp.dpy, s->surface, buffer);
+    }
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+}
+
+EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
+{
+    clearError();
+
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean res = EGL_TRUE;
+    egl_connection_t* const cnx = &gEGLImpl;
+    if (cnx->dso && cnx->egl.eglSwapInterval) {
+        res = cnx->egl.eglSwapInterval(dp->disp.dpy, interval);
+    }
+
+    return res;
+}
+
+
+// ----------------------------------------------------------------------------
+// EGL 1.2
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglWaitClient(void)
+{
     clearError();
 
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglSwapBuffers(dpy, surface);
+    if (!cnx->dso)
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
+
+    EGLBoolean res;
+    if (cnx->egl.eglWaitClient) {
+        res = cnx->egl.eglWaitClient();
+    } else {
+        res = cnx->egl.eglWaitGL();
+    }
+    return res;
 }
 
-EGLBoolean eglCopyBuffers(EGLDisplay dpy, EGLSurface surface, NativePixmapType target) {
+EGLBoolean eglBindAPI(EGLenum api)
+{
     clearError();
 
+    if (egl_init_drivers() == EGL_FALSE) {
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+    }
+
+    // bind this API on all EGLs
+    EGLBoolean res = EGL_TRUE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCopyBuffers(dpy, surface, target);
+    if (cnx->dso && cnx->egl.eglBindAPI) {
+        res = cnx->egl.eglBindAPI(api);
+    }
+    return res;
 }
 
-const char* eglQueryString(EGLDisplay dpy, EGLint name) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryString(dpy, name);
-}
-
-extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryStringImplementationANDROID(dpy, name);
-}
-
-EGLBoolean eglSurfaceAttrib(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglSurfaceAttrib(dpy, surface, attribute, value);
-}
-
-EGLBoolean eglBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglBindTexImage(dpy, surface, buffer);
-}
-
-EGLBoolean eglReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglReleaseTexImage(dpy, surface, buffer);
-}
-
-EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglSwapInterval(dpy, interval);
-}
-
-EGLBoolean eglWaitClient(void) {
-    clearError();
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglWaitClient();
-}
-
-EGLBoolean eglBindAPI(EGLenum api) {
+EGLenum eglQueryAPI(void)
+{
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
@@ -304,282 +1640,806 @@
     }
 
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglBindAPI(api);
-}
-
-EGLenum eglQueryAPI(void) {
-    clearError();
-
-    if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+    if (cnx->dso && cnx->egl.eglQueryAPI) {
+        return cnx->egl.eglQueryAPI();
     }
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryAPI();
+    // or, it can only be OpenGL ES
+    return EGL_OPENGL_ES_API;
 }
 
-EGLBoolean eglReleaseThread(void) {
+EGLBoolean eglReleaseThread(void)
+{
     clearError();
 
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglReleaseThread();
+    if (cnx->dso && cnx->egl.eglReleaseThread) {
+        cnx->egl.eglReleaseThread();
+    }
+
+    // If there is context bound to the thread, release it
+    egl_display_t::loseCurrent(get_context(getContext()));
+
+    egl_tls_t::clearTLS();
+    return EGL_TRUE;
 }
 
-EGLSurface eglCreatePbufferFromClientBuffer(EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
-                                            EGLConfig config, const EGLint* attrib_list) {
+EGLSurface eglCreatePbufferFromClientBuffer(
+          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
+          EGLConfig config, const EGLint *attrib_list)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreatePbufferFromClientBuffer(dpy, buftype, buffer, config,
-                                                          attrib_list);
+    egl_connection_t* cnx = nullptr;
+    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
+    if (!dp) return EGL_FALSE;
+    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
+        return cnx->egl.eglCreatePbufferFromClientBuffer(
+                dp->disp.dpy, buftype, buffer, config, attrib_list);
+    }
+    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
 }
 
-EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface, const EGLint* attrib_list) {
+// ----------------------------------------------------------------------------
+// EGL_EGLEXT_VERSION 3
+// ----------------------------------------------------------------------------
+
+EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
+        const EGLint *attrib_list)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglLockSurfaceKHR(dpy, surface, attrib_list);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t const * const s = get_surface(surface);
+    if (s->cnx->egl.eglLockSurfaceKHR) {
+        return s->cnx->egl.eglLockSurfaceKHR(
+                dp->disp.dpy, s->surface, attrib_list);
+    }
+    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 }
 
-EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface) {
+EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglUnlockSurfaceKHR(dpy, surface);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get())
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+
+    egl_surface_t const * const s = get_surface(surface);
+    if (s->cnx->egl.eglUnlockSurfaceKHR) {
+        return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
+    }
+    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 }
 
 EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
-                              EGLClientBuffer buffer, const EGLint* attrib_list) {
+        EGLClientBuffer buffer, const EGLint *attrib_list)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_IMAGE_KHR;
+
+    ContextRef _c(dp.get(), ctx);
+    egl_context_t * const c = _c.get();
+
+    EGLImageKHR result = EGL_NO_IMAGE_KHR;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateImageKHR(dpy, ctx, target, buffer, attrib_list);
+    if (cnx->dso && cnx->egl.eglCreateImageKHR) {
+        result = cnx->egl.eglCreateImageKHR(
+                dp->disp.dpy,
+                c ? c->context : EGL_NO_CONTEXT,
+                target, buffer, attrib_list);
+    }
+    return result;
 }
 
-EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img) {
+EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglDestroyImageKHR(dpy, img);
+    if (cnx->dso && cnx->egl.eglDestroyImageKHR) {
+        result = cnx->egl.eglDestroyImageKHR(dp->disp.dpy, img);
+    }
+    return result;
 }
 
-EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint* attrib_list) {
+// ----------------------------------------------------------------------------
+// EGL_EGLEXT_VERSION 5
+// ----------------------------------------------------------------------------
+
+
+EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_SYNC_KHR;
+
+    EGLSyncKHR result = EGL_NO_SYNC_KHR;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateSyncKHR(dpy, type, attrib_list);
+    if (cnx->dso && cnx->egl.eglCreateSyncKHR) {
+        result = cnx->egl.eglCreateSyncKHR(dp->disp.dpy, type, attrib_list);
+    }
+    return result;
 }
 
-EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync) {
+EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglDestroySyncKHR(dpy, sync);
+    if (cnx->dso && cnx->egl.eglDestroySyncKHR) {
+        result = cnx->egl.eglDestroySyncKHR(dp->disp.dpy, sync);
+    }
+    return result;
 }
 
 EGLBoolean eglSignalSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLenum mode) {
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglSignalSyncKHR(dpy, sync, mode);
+    if (cnx->dso && cnx->egl.eglSignalSyncKHR) {
+        result = cnx->egl.eglSignalSyncKHR(
+                dp->disp.dpy, sync, mode);
+    }
+    return result;
 }
 
-EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout) {
+EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync,
+        EGLint flags, EGLTimeKHR timeout)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLint result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglClientWaitSyncKHR(dpy, sync, flags, timeout);
+    if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
+        result = cnx->egl.eglClientWaitSyncKHR(
+                dp->disp.dpy, sync, flags, timeout);
+    }
+    return result;
 }
 
-EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint attribute, EGLint* value) {
+EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync,
+        EGLint attribute, EGLint *value)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetSyncAttribKHR(dpy, sync, attribute, value);
+    if (cnx->dso && cnx->egl.eglGetSyncAttribKHR) {
+        result = cnx->egl.eglGetSyncAttribKHR(
+                dp->disp.dpy, sync, attribute, value);
+    }
+    return result;
 }
 
-EGLStreamKHR eglCreateStreamKHR(EGLDisplay dpy, const EGLint* attrib_list) {
+EGLStreamKHR eglCreateStreamKHR(EGLDisplay dpy, const EGLint *attrib_list)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_STREAM_KHR;
+
+    EGLStreamKHR result = EGL_NO_STREAM_KHR;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateStreamKHR(dpy, attrib_list);
+    if (cnx->dso && cnx->egl.eglCreateStreamKHR) {
+        result = cnx->egl.eglCreateStreamKHR(
+                dp->disp.dpy, attrib_list);
+    }
+    return result;
 }
 
-EGLBoolean eglDestroyStreamKHR(EGLDisplay dpy, EGLStreamKHR stream) {
+EGLBoolean eglDestroyStreamKHR(EGLDisplay dpy, EGLStreamKHR stream)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglDestroyStreamKHR(dpy, stream);
+    if (cnx->dso && cnx->egl.eglDestroyStreamKHR) {
+        result = cnx->egl.eglDestroyStreamKHR(
+                dp->disp.dpy, stream);
+    }
+    return result;
 }
 
-EGLBoolean eglStreamAttribKHR(EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute,
-                              EGLint value) {
+EGLBoolean eglStreamAttribKHR(EGLDisplay dpy, EGLStreamKHR stream,
+        EGLenum attribute, EGLint value)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglStreamAttribKHR(dpy, stream, attribute, value);
+    if (cnx->dso && cnx->egl.eglStreamAttribKHR) {
+        result = cnx->egl.eglStreamAttribKHR(
+                dp->disp.dpy, stream, attribute, value);
+    }
+    return result;
 }
 
-EGLBoolean eglQueryStreamKHR(EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute,
-                             EGLint* value) {
+EGLBoolean eglQueryStreamKHR(EGLDisplay dpy, EGLStreamKHR stream,
+        EGLenum attribute, EGLint *value)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryStreamKHR(dpy, stream, attribute, value);
+    if (cnx->dso && cnx->egl.eglQueryStreamKHR) {
+        result = cnx->egl.eglQueryStreamKHR(
+                dp->disp.dpy, stream, attribute, value);
+    }
+    return result;
 }
 
-EGLBoolean eglQueryStreamu64KHR(EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute,
-                                EGLuint64KHR* value) {
+EGLBoolean eglQueryStreamu64KHR(EGLDisplay dpy, EGLStreamKHR stream,
+        EGLenum attribute, EGLuint64KHR *value)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryStreamu64KHR(dpy, stream, attribute, value);
+    if (cnx->dso && cnx->egl.eglQueryStreamu64KHR) {
+        result = cnx->egl.eglQueryStreamu64KHR(
+                dp->disp.dpy, stream, attribute, value);
+    }
+    return result;
 }
 
-EGLBoolean eglQueryStreamTimeKHR(EGLDisplay dpy, EGLStreamKHR stream, EGLenum attribute,
-                                 EGLTimeKHR* value) {
+EGLBoolean eglQueryStreamTimeKHR(EGLDisplay dpy, EGLStreamKHR stream,
+        EGLenum attribute, EGLTimeKHR *value)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglQueryStreamTimeKHR(dpy, stream, attribute, value);
+    if (cnx->dso && cnx->egl.eglQueryStreamTimeKHR) {
+        result = cnx->egl.eglQueryStreamTimeKHR(
+                dp->disp.dpy, stream, attribute, value);
+    }
+    return result;
 }
 
-EGLSurface eglCreateStreamProducerSurfaceKHR(EGLDisplay dpy, EGLConfig config, EGLStreamKHR stream,
-                                             const EGLint* attrib_list) {
+EGLSurface eglCreateStreamProducerSurfaceKHR(EGLDisplay dpy, EGLConfig config,
+        EGLStreamKHR stream, const EGLint *attrib_list)
+{
     clearError();
 
+    egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_SURFACE;
+
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateStreamProducerSurfaceKHR(dpy, config, stream, attrib_list);
+    if (cnx->dso && cnx->egl.eglCreateStreamProducerSurfaceKHR) {
+        EGLSurface surface = cnx->egl.eglCreateStreamProducerSurfaceKHR(
+                dp->disp.dpy, config, stream, attrib_list);
+        if (surface != EGL_NO_SURFACE) {
+            egl_surface_t* s = new egl_surface_t(dp.get(), config, nullptr, surface,
+                                                 EGL_GL_COLORSPACE_LINEAR_KHR, cnx);
+            return s;
+        }
+    }
+    return EGL_NO_SURFACE;
 }
 
-EGLBoolean eglStreamConsumerGLTextureExternalKHR(EGLDisplay dpy, EGLStreamKHR stream) {
+EGLBoolean eglStreamConsumerGLTextureExternalKHR(EGLDisplay dpy,
+        EGLStreamKHR stream)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglStreamConsumerGLTextureExternalKHR(dpy, stream);
+    if (cnx->dso && cnx->egl.eglStreamConsumerGLTextureExternalKHR) {
+        result = cnx->egl.eglStreamConsumerGLTextureExternalKHR(
+                dp->disp.dpy, stream);
+    }
+    return result;
 }
 
-EGLBoolean eglStreamConsumerAcquireKHR(EGLDisplay dpy, EGLStreamKHR stream) {
+EGLBoolean eglStreamConsumerAcquireKHR(EGLDisplay dpy,
+        EGLStreamKHR stream)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglStreamConsumerAcquireKHR(dpy, stream);
+    if (cnx->dso && cnx->egl.eglStreamConsumerAcquireKHR) {
+        result = cnx->egl.eglStreamConsumerAcquireKHR(
+                dp->disp.dpy, stream);
+    }
+    return result;
 }
 
-EGLBoolean eglStreamConsumerReleaseKHR(EGLDisplay dpy, EGLStreamKHR stream) {
+EGLBoolean eglStreamConsumerReleaseKHR(EGLDisplay dpy,
+        EGLStreamKHR stream)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+
+    EGLBoolean result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglStreamConsumerReleaseKHR(dpy, stream);
+    if (cnx->dso && cnx->egl.eglStreamConsumerReleaseKHR) {
+        result = cnx->egl.eglStreamConsumerReleaseKHR(
+                dp->disp.dpy, stream);
+    }
+    return result;
 }
 
-EGLNativeFileDescriptorKHR eglGetStreamFileDescriptorKHR(EGLDisplay dpy, EGLStreamKHR stream) {
+EGLNativeFileDescriptorKHR eglGetStreamFileDescriptorKHR(
+        EGLDisplay dpy, EGLStreamKHR stream)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_FILE_DESCRIPTOR_KHR;
+
+    EGLNativeFileDescriptorKHR result = EGL_NO_FILE_DESCRIPTOR_KHR;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetStreamFileDescriptorKHR(dpy, stream);
+    if (cnx->dso && cnx->egl.eglGetStreamFileDescriptorKHR) {
+        result = cnx->egl.eglGetStreamFileDescriptorKHR(
+                dp->disp.dpy, stream);
+    }
+    return result;
 }
 
-EGLStreamKHR eglCreateStreamFromFileDescriptorKHR(EGLDisplay dpy,
-                                                  EGLNativeFileDescriptorKHR file_descriptor) {
+EGLStreamKHR eglCreateStreamFromFileDescriptorKHR(
+        EGLDisplay dpy, EGLNativeFileDescriptorKHR file_descriptor)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_STREAM_KHR;
+
+    EGLStreamKHR result = EGL_NO_STREAM_KHR;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglCreateStreamFromFileDescriptorKHR(dpy, file_descriptor);
+    if (cnx->dso && cnx->egl.eglCreateStreamFromFileDescriptorKHR) {
+        result = cnx->egl.eglCreateStreamFromFileDescriptorKHR(
+                dp->disp.dpy, file_descriptor);
+    }
+    return result;
 }
 
+// ----------------------------------------------------------------------------
+// EGL_EGLEXT_VERSION 15
+// ----------------------------------------------------------------------------
+
 EGLint eglWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags) {
     clearError();
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_FALSE;
+    EGLint result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglWaitSyncKHR(dpy, sync, flags);
+    if (cnx->dso && cnx->egl.eglWaitSyncKHR) {
+        result = cnx->egl.eglWaitSyncKHR(dp->disp.dpy, sync, flags);
+    }
+    return result;
 }
 
-EGLint eglDupNativeFenceFDANDROID(EGLDisplay dpy, EGLSyncKHR sync) {
+// ----------------------------------------------------------------------------
+// ANDROID extensions
+// ----------------------------------------------------------------------------
+
+EGLint eglDupNativeFenceFDANDROID(EGLDisplay dpy, EGLSyncKHR sync)
+{
     clearError();
 
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) return EGL_NO_NATIVE_FENCE_FD_ANDROID;
+
+    EGLint result = EGL_NO_NATIVE_FENCE_FD_ANDROID;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglDupNativeFenceFDANDROID(dpy, sync);
+    if (cnx->dso && cnx->egl.eglDupNativeFenceFDANDROID) {
+        result = cnx->egl.eglDupNativeFenceFDANDROID(dp->disp.dpy, sync);
+    }
+    return result;
 }
 
-EGLBoolean eglPresentationTimeANDROID(EGLDisplay dpy, EGLSurface surface, EGLnsecsANDROID time) {
+EGLBoolean eglPresentationTimeANDROID(EGLDisplay dpy, EGLSurface surface,
+        EGLnsecsANDROID time)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglPresentationTimeANDROID(dpy, surface, time);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return EGL_FALSE;
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return EGL_FALSE;
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+    native_window_set_buffers_timestamp(s->getNativeWindow(), time);
+
+    return EGL_TRUE;
 }
 
-EGLClientBuffer eglGetNativeClientBufferANDROID(const AHardwareBuffer* buffer) {
+EGLClientBuffer eglGetNativeClientBufferANDROID(const AHardwareBuffer *buffer) {
     clearError();
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetNativeClientBufferANDROID(buffer);
+    // AHardwareBuffer_to_ANativeWindowBuffer is a platform-only symbol and thus
+    // this function cannot be implemented when this libEGL is built for
+    // vendors.
+#ifndef __ANDROID_VNDK__
+    if (!buffer) return setError(EGL_BAD_PARAMETER, (EGLClientBuffer) nullptr);
+    return const_cast<ANativeWindowBuffer *>(AHardwareBuffer_to_ANativeWindowBuffer(buffer));
+#else
+    return setError(EGL_BAD_PARAMETER, (EGLClientBuffer) nullptr);
+#endif
 }
 
-EGLuint64NV eglGetSystemTimeFrequencyNV() {
+// ----------------------------------------------------------------------------
+// NVIDIA extensions
+// ----------------------------------------------------------------------------
+EGLuint64NV eglGetSystemTimeFrequencyNV()
+{
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
         return setError(EGL_BAD_PARAMETER, (EGLuint64NV)EGL_FALSE);
     }
 
+    EGLuint64NV ret = 0;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetSystemTimeFrequencyNV();
+
+    if (cnx->dso && cnx->egl.eglGetSystemTimeFrequencyNV) {
+        return cnx->egl.eglGetSystemTimeFrequencyNV();
+    }
+
+    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
 }
 
-EGLuint64NV eglGetSystemTimeNV() {
+EGLuint64NV eglGetSystemTimeNV()
+{
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
         return setError(EGL_BAD_PARAMETER, (EGLuint64NV)EGL_FALSE);
     }
 
+    EGLuint64NV ret = 0;
     egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetSystemTimeNV();
+
+    if (cnx->dso && cnx->egl.eglGetSystemTimeNV) {
+        return cnx->egl.eglGetSystemTimeNV();
+    }
+
+    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
 }
 
-EGLBoolean eglSetDamageRegionKHR(EGLDisplay dpy, EGLSurface surface, EGLint* rects,
-                                 EGLint n_rects) {
+// ----------------------------------------------------------------------------
+// Partial update extension
+// ----------------------------------------------------------------------------
+EGLBoolean eglSetDamageRegionKHR(EGLDisplay dpy, EGLSurface surface,
+        EGLint *rects, EGLint n_rects)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglSetDamageRegionKHR(dpy, surface, rects, n_rects);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return EGL_FALSE;
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return EGL_FALSE;
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+    if (s->cnx->egl.eglSetDamageRegionKHR) {
+        return s->cnx->egl.eglSetDamageRegionKHR(dp->disp.dpy, s->surface,
+                rects, n_rects);
+    }
+
+    return EGL_FALSE;
 }
 
-EGLBoolean eglGetNextFrameIdANDROID(EGLDisplay dpy, EGLSurface surface, EGLuint64KHR* frameId) {
+EGLBoolean eglGetNextFrameIdANDROID(EGLDisplay dpy, EGLSurface surface,
+            EGLuint64KHR *frameId) {
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetNextFrameIdANDROID(dpy, surface, frameId);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+
+    if (!s->getNativeWindow()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    uint64_t nextFrameId = 0;
+    int ret = native_window_get_next_frame_id(s->getNativeWindow(), &nextFrameId);
+
+    if (ret != 0) {
+        // This should not happen. Return an error that is not in the spec
+        // so it's obvious something is very wrong.
+        ALOGE("eglGetNextFrameId: Unexpected error.");
+        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
+    }
+
+    *frameId = nextFrameId;
+    return EGL_TRUE;
 }
 
-EGLBoolean eglGetCompositorTimingANDROID(EGLDisplay dpy, EGLSurface surface, EGLint numTimestamps,
-                                         const EGLint* names, EGLnsecsANDROID* values) {
+EGLBoolean eglGetCompositorTimingANDROID(EGLDisplay dpy, EGLSurface surface,
+        EGLint numTimestamps, const EGLint *names, EGLnsecsANDROID *values)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetCompositorTimingANDROID(dpy, surface, numTimestamps, names, values);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+
+    if (!s->getNativeWindow()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    nsecs_t* compositeDeadline = nullptr;
+    nsecs_t* compositeInterval = nullptr;
+    nsecs_t* compositeToPresentLatency = nullptr;
+
+    for (int i = 0; i < numTimestamps; i++) {
+        switch (names[i]) {
+            case EGL_COMPOSITE_DEADLINE_ANDROID:
+                compositeDeadline = &values[i];
+                break;
+            case EGL_COMPOSITE_INTERVAL_ANDROID:
+                compositeInterval = &values[i];
+                break;
+            case EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID:
+                compositeToPresentLatency = &values[i];
+                break;
+            default:
+                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+        }
+    }
+
+    int ret = native_window_get_compositor_timing(s->getNativeWindow(),
+            compositeDeadline, compositeInterval, compositeToPresentLatency);
+
+    switch (ret) {
+      case 0:
+        return EGL_TRUE;
+      case -ENOSYS:
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+      default:
+        // This should not happen. Return an error that is not in the spec
+        // so it's obvious something is very wrong.
+        ALOGE("eglGetCompositorTiming: Unexpected error.");
+        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
+    }
 }
 
-EGLBoolean eglGetCompositorTimingSupportedANDROID(EGLDisplay dpy, EGLSurface surface, EGLint name) {
+EGLBoolean eglGetCompositorTimingSupportedANDROID(
+        EGLDisplay dpy, EGLSurface surface, EGLint name)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetCompositorTimingSupportedANDROID(dpy, surface, name);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+
+    ANativeWindow* window = s->getNativeWindow();
+    if (!window) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    switch (name) {
+        case EGL_COMPOSITE_DEADLINE_ANDROID:
+        case EGL_COMPOSITE_INTERVAL_ANDROID:
+        case EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID:
+            return EGL_TRUE;
+        default:
+            return EGL_FALSE;
+    }
 }
 
-EGLBoolean eglGetFrameTimestampsANDROID(EGLDisplay dpy, EGLSurface surface, EGLuint64KHR frameId,
-                                        EGLint numTimestamps, const EGLint* timestamps,
-                                        EGLnsecsANDROID* values) {
+EGLBoolean eglGetFrameTimestampsANDROID(EGLDisplay dpy, EGLSurface surface,
+        EGLuint64KHR frameId, EGLint numTimestamps, const EGLint *timestamps,
+        EGLnsecsANDROID *values)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetFrameTimestampsANDROID(dpy, surface, frameId, numTimestamps,
-                                                      timestamps, values);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+
+    if (!s->getNativeWindow()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    nsecs_t* requestedPresentTime = nullptr;
+    nsecs_t* acquireTime = nullptr;
+    nsecs_t* latchTime = nullptr;
+    nsecs_t* firstRefreshStartTime = nullptr;
+    nsecs_t* gpuCompositionDoneTime = nullptr;
+    nsecs_t* lastRefreshStartTime = nullptr;
+    nsecs_t* displayPresentTime = nullptr;
+    nsecs_t* dequeueReadyTime = nullptr;
+    nsecs_t* releaseTime = nullptr;
+
+    for (int i = 0; i < numTimestamps; i++) {
+        switch (timestamps[i]) {
+            case EGL_REQUESTED_PRESENT_TIME_ANDROID:
+                requestedPresentTime = &values[i];
+                break;
+            case EGL_RENDERING_COMPLETE_TIME_ANDROID:
+                acquireTime = &values[i];
+                break;
+            case EGL_COMPOSITION_LATCH_TIME_ANDROID:
+                latchTime = &values[i];
+                break;
+            case EGL_FIRST_COMPOSITION_START_TIME_ANDROID:
+                firstRefreshStartTime = &values[i];
+                break;
+            case EGL_LAST_COMPOSITION_START_TIME_ANDROID:
+                lastRefreshStartTime = &values[i];
+                break;
+            case EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID:
+                gpuCompositionDoneTime = &values[i];
+                break;
+            case EGL_DISPLAY_PRESENT_TIME_ANDROID:
+                displayPresentTime = &values[i];
+                break;
+            case EGL_DEQUEUE_READY_TIME_ANDROID:
+                dequeueReadyTime = &values[i];
+                break;
+            case EGL_READS_DONE_TIME_ANDROID:
+                releaseTime = &values[i];
+                break;
+            default:
+                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+        }
+    }
+
+    int ret = native_window_get_frame_timestamps(s->getNativeWindow(), frameId,
+            requestedPresentTime, acquireTime, latchTime, firstRefreshStartTime,
+            lastRefreshStartTime, gpuCompositionDoneTime, displayPresentTime,
+            dequeueReadyTime, releaseTime);
+
+    switch (ret) {
+        case 0:
+            return EGL_TRUE;
+        case -ENOENT:
+            return setError(EGL_BAD_ACCESS, (EGLBoolean)EGL_FALSE);
+        case -ENOSYS:
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        case -EINVAL:
+            return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+        default:
+            // This should not happen. Return an error that is not in the spec
+            // so it's obvious something is very wrong.
+            ALOGE("eglGetFrameTimestamps: Unexpected error.");
+            return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
+    }
 }
 
-EGLBoolean eglGetFrameTimestampSupportedANDROID(EGLDisplay dpy, EGLSurface surface,
-                                                EGLint timestamp) {
+EGLBoolean eglGetFrameTimestampSupportedANDROID(
+        EGLDisplay dpy, EGLSurface surface, EGLint timestamp)
+{
     clearError();
 
-    egl_connection_t* const cnx = &gEGLImpl;
-    return cnx->platform.eglGetFrameTimestampSupportedANDROID(dpy, surface, timestamp);
+    const egl_display_ptr dp = validate_display(dpy);
+    if (!dp) {
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
+    }
+
+    SurfaceRef _s(dp.get(), surface);
+    if (!_s.get()) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    egl_surface_t const * const s = get_surface(surface);
+
+    ANativeWindow* window = s->getNativeWindow();
+    if (!window) {
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+    }
+
+    switch (timestamp) {
+        case EGL_COMPOSITE_DEADLINE_ANDROID:
+        case EGL_COMPOSITE_INTERVAL_ANDROID:
+        case EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID:
+        case EGL_REQUESTED_PRESENT_TIME_ANDROID:
+        case EGL_RENDERING_COMPLETE_TIME_ANDROID:
+        case EGL_COMPOSITION_LATCH_TIME_ANDROID:
+        case EGL_FIRST_COMPOSITION_START_TIME_ANDROID:
+        case EGL_LAST_COMPOSITION_START_TIME_ANDROID:
+        case EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID:
+        case EGL_DEQUEUE_READY_TIME_ANDROID:
+        case EGL_READS_DONE_TIME_ANDROID:
+            return EGL_TRUE;
+        case EGL_DISPLAY_PRESENT_TIME_ANDROID: {
+            int value = 0;
+            window->query(window,
+                    NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT, &value);
+            return value == 0 ? EGL_FALSE : EGL_TRUE;
+        }
+        default:
+            return EGL_FALSE;
+    }
 }
diff --git a/opengl/libs/EGL/egl_layers.cpp b/opengl/libs/EGL/egl_layers.cpp
deleted file mode 100644
index 6900b8b..0000000
--- a/opengl/libs/EGL/egl_layers.cpp
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- ** Copyright 2018, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#include "egl_layers.h"
-
-#include <EGL/egl.h>
-#include <android-base/file.h>
-#include <android-base/strings.h>
-#include <android/dlext.h>
-#include <cutils/properties.h>
-#include <dlfcn.h>
-#include <graphicsenv/GraphicsEnv.h>
-#include <log/log.h>
-#include <nativebridge/native_bridge.h>
-#include <nativeloader/native_loader.h>
-#include <sys/prctl.h>
-
-namespace android {
-
-// GLES Layers
-//
-// - Layer discovery -
-// 1. Check for debug layer list from GraphicsEnv
-// 2. If none enabled, check system properties
-//
-// - Layer initializing -
-// TODO: ADD DETAIL ABOUT NEW INTERFACES
-// - InitializeLayer (provided by layer, called by loader)
-// - GetLayerProcAddress (provided by layer, called by loader)
-// - getNextLayerProcAddress (provided by loader, called by layer)
-//
-// 1. Walk through defs for egl and each gl version
-// 2. Call GetLayerProcAddress passing the name and the target hook entry point
-//   - This tells the layer the next point in the chain it should call
-// 3. Replace the hook with the layer's entry point
-//    - All entryoints will be present, anything unsupported by the driver will
-//      have gl_unimplemented
-//
-// - Extension layering -
-//  Not all functions are known to Android, so libEGL handles extensions.
-//  They are looked up by applications using eglGetProcAddress
-//  Layers can look them up with getNextLayerProcAddress
-
-const int kFuncCount = sizeof(platform_impl_t) / sizeof(char*) + sizeof(egl_t) / sizeof(char*) +
-        sizeof(gl_hooks_t) / sizeof(char*);
-
-typedef struct FunctionTable {
-    EGLFuncPointer x[kFuncCount];
-    EGLFuncPointer& operator[](int i) { return x[i]; }
-} FunctionTable;
-
-// TODO: Move these to class
-std::unordered_map<std::string, int> func_indices;
-// func_indices.reserve(kFuncCount);
-
-std::unordered_map<int, std::string> func_names;
-// func_names.reserve(kFuncCount);
-
-std::vector<FunctionTable> layer_functions;
-
-const void* getNextLayerProcAddress(void* layer_id, const char* name) {
-    // Use layer_id to find funcs for layer below current
-    // This is the same key provided in InitializeLayer
-    auto next_layer_funcs = reinterpret_cast<FunctionTable*>(layer_id);
-    EGLFuncPointer val;
-
-    if (func_indices.find(name) == func_indices.end()) {
-        // No entry for this function - it is an extension
-        // call down the GPA chain directly to the impl
-        ALOGV("getNextLayerProcAddress servicing %s", name);
-
-        // Look up which GPA we should use
-        int gpaIndex = func_indices["eglGetProcAddress"];
-        EGLFuncPointer gpaNext = (*next_layer_funcs)[gpaIndex];
-
-        ALOGV("Calling down the GPA chain (%llu) for %s", (unsigned long long)gpaNext, name);
-
-        // Call it for the requested function
-        typedef void* (*PFNEGLGETPROCADDRESSPROC)(const char*);
-        PFNEGLGETPROCADDRESSPROC next = reinterpret_cast<PFNEGLGETPROCADDRESSPROC>(gpaNext);
-
-        val = reinterpret_cast<EGLFuncPointer>(next(name));
-        ALOGV("Got back %llu for %s", (unsigned long long)val, name);
-
-        // We should store it now, but to do that, we need to move func_idx to the class so we can
-        // increment it separately
-        // TODO: Move func_idx to class and store the result of GPA
-        return reinterpret_cast<void*>(val);
-    }
-
-    // int index = func_indices[name];
-    // val = (*next_layer_funcs)[index];
-    // return reinterpret_cast<void*>(val);
-    return reinterpret_cast<void*>((*next_layer_funcs)[func_indices[name]]);
-}
-
-void SetupFuncMaps(FunctionTable& functions, char const* const* entries, EGLFuncPointer* curr,
-                   int& func_idx) {
-    while (*entries) {
-        const char* name = *entries;
-
-        // Some names overlap, only fill with initial entry
-        // This does mean that some indices will not be used
-        if (func_indices.find(name) == func_indices.end()) {
-            func_names[func_idx] = name;
-            func_indices[name] = func_idx;
-        }
-
-        // Populate layer_functions once with initial value
-        // These values will arrive in priority order, starting with platform entries
-        if (functions[func_idx] == nullptr) {
-            functions[func_idx] = *curr;
-        }
-
-        entries++;
-        curr++;
-        func_idx++;
-    }
-}
-
-LayerLoader& LayerLoader::getInstance() {
-    // This function is mutex protected in egl_init_drivers_locked and eglGetProcAddressImpl
-    static LayerLoader layer_loader;
-
-    if (!layer_loader.layers_loaded_) layer_loader.LoadLayers();
-
-    return layer_loader;
-}
-
-const char kSystemLayerLibraryDir[] = "/data/local/debug/gles";
-
-std::string LayerLoader::GetDebugLayers() {
-    // Layers can be specified at the Java level in GraphicsEnvironemnt
-    // gpu_debug_layers = layer1:layer2:layerN
-    std::string debug_layers = android_getDebugLayers();
-
-    if (debug_layers.empty()) {
-        // Only check system properties if Java settings are empty
-        char prop[PROPERTY_VALUE_MAX];
-        property_get("debug.gles.layers", prop, "");
-        debug_layers = prop;
-    }
-
-    return debug_layers;
-}
-
-EGLFuncPointer LayerLoader::ApplyLayer(layer_setup_func layer_setup, const char* name,
-                                       EGLFuncPointer next) {
-    // Walk through our list of LayerSetup functions (they will already be in reverse order) to
-    // build up a call chain from the driver
-
-    EGLFuncPointer layer_entry = next;
-
-    layer_entry = layer_setup(name, layer_entry);
-
-    if (next != layer_entry) {
-        ALOGV("We succeeded, replacing hook (%llu) with layer entry (%llu), for %s",
-              (unsigned long long)next, (unsigned long long)layer_entry, name);
-    }
-
-    return layer_entry;
-}
-
-EGLFuncPointer LayerLoader::ApplyLayers(const char* name, EGLFuncPointer next) {
-    if (!layers_loaded_ || layer_setup_.empty()) return next;
-
-    ALOGV("ApplyLayers called for %s with next (%llu), current_layer_ (%i)", name,
-          (unsigned long long)next, current_layer_);
-
-    EGLFuncPointer val = next;
-
-    // Only ApplyLayers for layers that have been setup, not all layers yet
-    for (unsigned i = 0; i < current_layer_; i++) {
-        ALOGV("ApplyLayers: Calling ApplyLayer with i = %i for %s with next (%llu)", i, name,
-              (unsigned long long)next);
-        val = ApplyLayer(layer_setup_[i], name, val);
-    }
-
-    ALOGV("ApplyLayers returning %llu for %s", (unsigned long long)val, name);
-
-    return val;
-}
-
-void LayerLoader::LayerPlatformEntries(layer_setup_func layer_setup, EGLFuncPointer* curr,
-                                       char const* const* entries) {
-    while (*entries) {
-        char const* name = *entries;
-
-        EGLFuncPointer prev = *curr;
-
-        // Pass the existing entry point into the layer, replace the call with return value
-        *curr = ApplyLayer(layer_setup, name, *curr);
-
-        if (prev != *curr) {
-            ALOGV("LayerPlatformEntries: Replaced (%llu) with platform entry (%llu), for %s",
-                  (unsigned long long)prev, (unsigned long long)*curr, name);
-        } else {
-            ALOGV("LayerPlatformEntries: No change(%llu) for %s, which means layer did not "
-                  "intercept",
-                  (unsigned long long)prev, name);
-        }
-
-        curr++;
-        entries++;
-    }
-}
-
-void LayerLoader::LayerDriverEntries(layer_setup_func layer_setup, EGLFuncPointer* curr,
-                                     char const* const* entries) {
-    while (*entries) {
-        char const* name = *entries;
-        EGLFuncPointer prev = *curr;
-
-        // Only apply layers to driver entries if not handled by the platform
-        if (FindPlatformImplAddr(name) == nullptr) {
-            // Pass the existing entry point into the layer, replace the call with return value
-            *curr = ApplyLayer(layer_setup, name, *prev);
-
-            if (prev != *curr) {
-                ALOGV("LayerDriverEntries: Replaced (%llu) with platform entry (%llu), for %s",
-                      (unsigned long long)prev, (unsigned long long)*curr, name);
-            }
-
-        } else {
-            ALOGV("LayerDriverEntries: Skipped (%llu) for %s", (unsigned long long)prev, name);
-        }
-
-        curr++;
-        entries++;
-    }
-}
-
-bool LayerLoader::Initialized() {
-    return initialized_;
-}
-
-void LayerLoader::InitLayers(egl_connection_t* cnx) {
-    if (!layers_loaded_) return;
-
-    if (initialized_) return;
-
-    if (layer_setup_.empty()) {
-        initialized_ = true;
-        return;
-    }
-
-    // Include the driver in layer_functions
-    layer_functions.resize(layer_setup_.size() + 1);
-
-    // Walk through the initial lists and create layer_functions[0]
-    int func_idx = 0;
-    char const* const* entries;
-    EGLFuncPointer* curr;
-
-    entries = platform_names;
-    curr = reinterpret_cast<EGLFuncPointer*>(&cnx->platform);
-    SetupFuncMaps(layer_functions[0], entries, curr, func_idx);
-    ALOGV("InitLayers: func_idx after platform_names: %i", func_idx);
-
-    entries = egl_names;
-    curr = reinterpret_cast<EGLFuncPointer*>(&cnx->egl);
-    SetupFuncMaps(layer_functions[0], entries, curr, func_idx);
-    ALOGV("InitLayers: func_idx after egl_names: %i", func_idx);
-
-    entries = gl_names;
-    curr = reinterpret_cast<EGLFuncPointer*>(&cnx->hooks[egl_connection_t::GLESv2_INDEX]->gl);
-    SetupFuncMaps(layer_functions[0], entries, curr, func_idx);
-    ALOGV("InitLayers: func_idx after gl_names: %i", func_idx);
-
-    // Walk through each layer's entry points per API, starting just above the driver
-    for (current_layer_ = 0; current_layer_ < layer_setup_.size(); current_layer_++) {
-        // Init the layer with a key that points to layer just below it
-        layer_init_[current_layer_](reinterpret_cast<void*>(&layer_functions[current_layer_]),
-                                    reinterpret_cast<PFNEGLGETNEXTLAYERPROCADDRESSPROC>(
-                                            getNextLayerProcAddress));
-
-        // Check functions implemented by the platform
-        func_idx = 0;
-        entries = platform_names;
-        curr = reinterpret_cast<EGLFuncPointer*>(&cnx->platform);
-        LayerPlatformEntries(layer_setup_[current_layer_], curr, entries);
-
-        // Populate next function table after layers have been applied
-        SetupFuncMaps(layer_functions[current_layer_ + 1], entries, curr, func_idx);
-
-        // EGL
-        entries = egl_names;
-        curr = reinterpret_cast<EGLFuncPointer*>(&cnx->egl);
-        LayerDriverEntries(layer_setup_[current_layer_], curr, entries);
-
-        // Populate next function table after layers have been applied
-        SetupFuncMaps(layer_functions[current_layer_ + 1], entries, curr, func_idx);
-
-        // GLES 2+
-        // NOTE: We route calls to GLESv2 hooks, not GLESv1, so layering does not support GLES 1.x
-        // If it were added in the future, a different layer initialization model would be needed,
-        // that defers loading GLES entrypoints until after eglMakeCurrent, so two phase
-        // initialization.
-        entries = gl_names;
-        curr = reinterpret_cast<EGLFuncPointer*>(&cnx->hooks[egl_connection_t::GLESv2_INDEX]->gl);
-        LayerDriverEntries(layer_setup_[current_layer_], curr, entries);
-
-        // Populate next function table after layers have been applied
-        SetupFuncMaps(layer_functions[current_layer_ + 1], entries, curr, func_idx);
-    }
-
-    // We only want to apply layers once
-    initialized_ = true;
-}
-
-void LayerLoader::LoadLayers() {
-    std::string debug_layers = GetDebugLayers();
-
-    // If no layers are specified, we're done
-    if (debug_layers.empty()) return;
-
-    // Only enable the system search path for non-user builds
-    std::string system_path;
-    if (property_get_bool("ro.debuggable", false) && prctl(PR_GET_DUMPABLE, 0, 0, 0, 0)) {
-        system_path = kSystemLayerLibraryDir;
-    }
-
-    ALOGI("Debug layer list: %s", debug_layers.c_str());
-    std::vector<std::string> layers = android::base::Split(debug_layers, ":");
-
-    // Load the layers in reverse order so we start with the driver's entrypoint and work our way up
-    for (int32_t i = layers.size() - 1; i >= 0; i--) {
-        // Check each layer path for the layer
-        std::vector<std::string> paths = android::base::Split(android_getLayerPaths(), ":");
-
-        if (!system_path.empty()) {
-            // Prepend the system paths so they override other layers
-            auto it = paths.begin();
-            paths.insert(it, system_path);
-        }
-
-        bool layer_found = false;
-        for (uint32_t j = 0; j < paths.size() && !layer_found; j++) {
-            std::string layer;
-
-            ALOGI("Searching %s for GLES layers", paths[j].c_str());
-
-            // Realpath will return null for non-existent files
-            android::base::Realpath(paths[j] + "/" + layers[i], &layer);
-
-            if (!layer.empty()) {
-                layer_found = true;
-                ALOGI("GLES layer found: %s", layer.c_str());
-
-                // Load the layer
-                //
-                // TODO: This code is common with Vulkan loader, refactor
-                //
-                // Libraries in the system layer library dir can't be loaded into
-                // the application namespace. That causes compatibility problems, since
-                // any symbol dependencies will be resolved by system libraries. They
-                // can't safely use libc++_shared, for example. Which is one reason
-                // (among several) we only allow them in non-user builds.
-                void* handle = nullptr;
-                auto app_namespace = android::GraphicsEnv::getInstance().getAppNamespace();
-                if (app_namespace && !android::base::StartsWith(layer, kSystemLayerLibraryDir)) {
-                    bool native_bridge = false;
-                    std::string error_message;
-                    handle = OpenNativeLibrary(app_namespace, layer.c_str(), &native_bridge,
-                                               &error_message);
-                    if (!handle) {
-                        ALOGE("Failed to load layer %s with error: %s", layer.c_str(),
-                              error_message.c_str());
-                        return;
-                    }
-
-                } else {
-                    handle = dlopen(layer.c_str(), RTLD_NOW | RTLD_LOCAL);
-                }
-
-                if (handle) {
-                    ALOGV("Loaded layer handle (%llu) for layer %s", (unsigned long long)handle,
-                          layers[i].c_str());
-                } else {
-                    // If the layer is found but can't be loaded, try setenforce 0
-                    const char* dlsym_error = dlerror();
-                    ALOGE("Failed to load layer %s with error: %s", layer.c_str(), dlsym_error);
-                    return;
-                }
-
-                // Find the layer's Initialize function
-                std::string init_func = "InitializeLayer";
-                ALOGV("Looking for entrypoint %s", init_func.c_str());
-
-                layer_init_func LayerInit =
-                        reinterpret_cast<layer_init_func>(dlsym(handle, init_func.c_str()));
-                if (LayerInit) {
-                    ALOGV("Found %s for layer %s", init_func.c_str(), layer.c_str());
-                    layer_init_.push_back(LayerInit);
-                } else {
-                    ALOGE("Failed to dlsym %s for layer %s", init_func.c_str(), layer.c_str());
-                    return;
-                }
-
-                // Find the layer's setup function
-                std::string setup_func = "GetLayerProcAddress";
-                ALOGV("Looking for entrypoint %s", setup_func.c_str());
-
-                layer_setup_func LayerSetup =
-                        reinterpret_cast<layer_setup_func>(dlsym(handle, setup_func.c_str()));
-                if (LayerSetup) {
-                    ALOGV("Found %s for layer %s", setup_func.c_str(), layer.c_str());
-                    layer_setup_.push_back(LayerSetup);
-                } else {
-                    ALOGE("Failed to dlsym %s for layer %s", setup_func.c_str(), layer.c_str());
-                    return;
-                }
-            }
-        }
-    }
-    // Track this so we only attempt to load these once
-    layers_loaded_ = true;
-}
-
-} // namespace android
diff --git a/opengl/libs/EGL/egl_layers.h b/opengl/libs/EGL/egl_layers.h
deleted file mode 100644
index e401b44..0000000
--- a/opengl/libs/EGL/egl_layers.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_EGL_LAYERS_H
-#define ANDROID_EGL_LAYERS_H
-
-#include <string>
-#include <unordered_map>
-#include <vector>
-
-#include <EGL/egldefs.h>
-
-#include "egl_platform_entries.h"
-
-typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
-
-namespace android {
-
-class LayerLoader {
-public:
-    static LayerLoader& getInstance();
-    ~LayerLoader(){};
-
-    typedef void* (*PFNEGLGETNEXTLAYERPROCADDRESSPROC)(void*, const char*);
-    typedef EGLFuncPointer (*layer_init_func)(
-            const void* layer_id, PFNEGLGETNEXTLAYERPROCADDRESSPROC get_next_layer_proc_address);
-    typedef EGLFuncPointer (*layer_setup_func)(const char* name, EGLFuncPointer next);
-
-    void LoadLayers();
-    void InitLayers(egl_connection_t*);
-    void LayerPlatformEntries(layer_setup_func layer_setup, EGLFuncPointer*, char const* const*);
-    void LayerDriverEntries(layer_setup_func layer_setup, EGLFuncPointer*, char const* const*);
-    bool Initialized();
-    std::string GetDebugLayers();
-
-    EGLFuncPointer GetGpaNext(unsigned i);
-    EGLFuncPointer ApplyLayer(layer_setup_func layer_setup, const char* name, EGLFuncPointer next);
-    EGLFuncPointer ApplyLayers(const char* name, EGLFuncPointer next);
-
-    std::vector<layer_init_func> layer_init_;
-    std::vector<layer_setup_func> layer_setup_;
-
-private:
-    LayerLoader() : layers_loaded_(false), initialized_(false), current_layer_(0){};
-    bool layers_loaded_;
-    bool initialized_;
-    unsigned current_layer_;
-};
-
-}; // namespace android
-
-#endif // ANDROID_EGL_LAYERS_H
diff --git a/opengl/libs/EGL/egl_platform_entries.cpp b/opengl/libs/EGL/egl_platform_entries.cpp
deleted file mode 100644
index 0d69a65..0000000
--- a/opengl/libs/EGL/egl_platform_entries.cpp
+++ /dev/null
@@ -1,2475 +0,0 @@
-/*
- ** Copyright 2007, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#define ATRACE_TAG ATRACE_TAG_GRAPHICS
-
-#include "egl_platform_entries.h"
-
-#include <ctype.h>
-#include <dlfcn.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <hardware/gralloc1.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-#include <EGL/eglext_angle.h>
-
-#include <android/hardware_buffer.h>
-#include <android-base/strings.h>
-#include <graphicsenv/GraphicsEnv.h>
-#include <private/android/AHardwareBufferHelpers.h>
-
-#include <cutils/compiler.h>
-#include <cutils/properties.h>
-#include <log/log.h>
-
-#include <condition_variable>
-#include <deque>
-#include <mutex>
-#include <unordered_map>
-#include <string>
-#include <thread>
-
-#include "../egl_impl.h"
-
-#include "egl_display.h"
-#include "egl_object.h"
-#include "egl_layers.h"
-#include "egl_tls.h"
-#include "egl_trace.h"
-
-using namespace android;
-
-// ----------------------------------------------------------------------------
-
-namespace android {
-
-using nsecs_t = int64_t;
-
-struct extention_map_t {
-    const char* name;
-    __eglMustCastToProperFunctionPointerType address;
-};
-
-/*
- * This is the list of EGL extensions exposed to applications.
- *
- * Some of them (gBuiltinExtensionString) are implemented entirely in this EGL
- * wrapper and are always available.
- *
- * The rest (gExtensionString) depend on support in the EGL driver, and are
- * only available if the driver supports them. However, some of these must be
- * supported because they are used by the Android system itself; these are
- * listed as mandatory below and are required by the CDD. The system *assumes*
- * the mandatory extensions are present and may not function properly if some
- * are missing.
- *
- * NOTE: Both strings MUST have a single space as the last character.
- */
-
-extern char const * const gBuiltinExtensionString;
-extern char const * const gExtensionString;
-
-// clang-format off
-// Extensions implemented by the EGL wrapper.
-char const * const gBuiltinExtensionString =
-        "EGL_KHR_get_all_proc_addresses "
-        "EGL_ANDROID_presentation_time "
-        "EGL_KHR_swap_buffers_with_damage "
-        "EGL_ANDROID_get_native_client_buffer "
-        "EGL_ANDROID_front_buffer_auto_refresh "
-        "EGL_ANDROID_get_frame_timestamps "
-        "EGL_EXT_surface_SMPTE2086_metadata "
-        "EGL_EXT_surface_CTA861_3_metadata "
-        ;
-
-// Whitelist of extensions exposed to applications if implemented in the vendor driver.
-char const * const gExtensionString  =
-        "EGL_KHR_image "                        // mandatory
-        "EGL_KHR_image_base "                   // mandatory
-        "EGL_EXT_image_gl_colorspace "
-        "EGL_KHR_image_pixmap "
-        "EGL_KHR_lock_surface "
-        "EGL_KHR_gl_colorspace "
-        "EGL_KHR_gl_texture_2D_image "
-        "EGL_KHR_gl_texture_3D_image "
-        "EGL_KHR_gl_texture_cubemap_image "
-        "EGL_KHR_gl_renderbuffer_image "
-        "EGL_KHR_reusable_sync "
-        "EGL_KHR_fence_sync "
-        "EGL_KHR_create_context "
-        "EGL_KHR_config_attribs "
-        "EGL_KHR_surfaceless_context "
-        "EGL_KHR_stream "
-        "EGL_KHR_stream_fifo "
-        "EGL_KHR_stream_producer_eglsurface "
-        "EGL_KHR_stream_consumer_gltexture "
-        "EGL_KHR_stream_cross_process_fd "
-        "EGL_EXT_create_context_robustness "
-        "EGL_NV_system_time "
-        "EGL_ANDROID_image_native_buffer "      // mandatory
-        "EGL_KHR_wait_sync "                    // strongly recommended
-        "EGL_ANDROID_recordable "               // mandatory
-        "EGL_KHR_partial_update "               // strongly recommended
-        "EGL_EXT_pixel_format_float "
-        "EGL_EXT_buffer_age "                   // strongly recommended with partial_update
-        "EGL_KHR_create_context_no_error "
-        "EGL_KHR_mutable_render_buffer "
-        "EGL_EXT_yuv_surface "
-        "EGL_EXT_protected_content "
-        "EGL_IMG_context_priority "
-        "EGL_KHR_no_config_context "
-        ;
-// clang-format on
-
-// extensions not exposed to applications but used by the ANDROID system
-//      "EGL_ANDROID_blob_cache "               // strongly recommended
-//      "EGL_IMG_hibernate_process "            // optional
-//      "EGL_ANDROID_native_fence_sync "        // strongly recommended
-//      "EGL_ANDROID_framebuffer_target "       // mandatory for HWC 1.1
-
-/*
- * EGL Extensions entry-points exposed to 3rd party applications
- * (keep in sync with gExtensionString above)
- *
- */
-static const extention_map_t sExtensionMap[] = {
-    // EGL_KHR_lock_surface
-    { "eglLockSurfaceKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR },
-    { "eglUnlockSurfaceKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglUnlockSurfaceKHR },
-
-    // EGL_KHR_image, EGL_KHR_image_base
-    { "eglCreateImageKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglCreateImageKHR },
-    { "eglDestroyImageKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglDestroyImageKHR },
-
-    // EGL_KHR_reusable_sync, EGL_KHR_fence_sync
-    { "eglCreateSyncKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglCreateSyncKHR },
-    { "eglDestroySyncKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglDestroySyncKHR },
-    { "eglClientWaitSyncKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglClientWaitSyncKHR },
-    { "eglSignalSyncKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglSignalSyncKHR },
-    { "eglGetSyncAttribKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglGetSyncAttribKHR },
-
-    // EGL_NV_system_time
-    { "eglGetSystemTimeFrequencyNV",
-            (__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeFrequencyNV },
-    { "eglGetSystemTimeNV",
-            (__eglMustCastToProperFunctionPointerType)&eglGetSystemTimeNV },
-
-    // EGL_KHR_wait_sync
-    { "eglWaitSyncKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglWaitSyncKHR },
-
-    // EGL_ANDROID_presentation_time
-    { "eglPresentationTimeANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglPresentationTimeANDROID },
-
-    // EGL_KHR_swap_buffers_with_damage
-    { "eglSwapBuffersWithDamageKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglSwapBuffersWithDamageKHR },
-
-    // EGL_ANDROID_get_native_client_buffer
-    { "eglGetNativeClientBufferANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglGetNativeClientBufferANDROID },
-
-    // EGL_KHR_partial_update
-    { "eglSetDamageRegionKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglSetDamageRegionKHR },
-
-    { "eglCreateStreamKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglCreateStreamKHR },
-    { "eglDestroyStreamKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglDestroyStreamKHR },
-    { "eglStreamAttribKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglStreamAttribKHR },
-    { "eglQueryStreamKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglQueryStreamKHR },
-    { "eglQueryStreamu64KHR",
-            (__eglMustCastToProperFunctionPointerType)&eglQueryStreamu64KHR },
-    { "eglQueryStreamTimeKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglQueryStreamTimeKHR },
-    { "eglCreateStreamProducerSurfaceKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglCreateStreamProducerSurfaceKHR },
-    { "eglStreamConsumerGLTextureExternalKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglStreamConsumerGLTextureExternalKHR },
-    { "eglStreamConsumerAcquireKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglStreamConsumerAcquireKHR },
-    { "eglStreamConsumerReleaseKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglStreamConsumerReleaseKHR },
-    { "eglGetStreamFileDescriptorKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglGetStreamFileDescriptorKHR },
-    { "eglCreateStreamFromFileDescriptorKHR",
-            (__eglMustCastToProperFunctionPointerType)&eglCreateStreamFromFileDescriptorKHR },
-
-    // EGL_ANDROID_get_frame_timestamps
-    { "eglGetNextFrameIdANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglGetNextFrameIdANDROID },
-    { "eglGetCompositorTimingANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglGetCompositorTimingANDROID },
-    { "eglGetCompositorTimingSupportedANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglGetCompositorTimingSupportedANDROID },
-    { "eglGetFrameTimestampsANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglGetFrameTimestampsANDROID },
-    { "eglGetFrameTimestampSupportedANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglGetFrameTimestampSupportedANDROID },
-
-    // EGL_ANDROID_native_fence_sync
-    { "eglDupNativeFenceFDANDROID",
-            (__eglMustCastToProperFunctionPointerType)&eglDupNativeFenceFDANDROID },
-};
-
-/*
- * These extensions entry-points should not be exposed to applications.
- * They're used internally by the Android EGL layer.
- */
-#define FILTER_EXTENSIONS(procname) \
-        (!strcmp((procname), "eglSetBlobCacheFuncsANDROID") ||    \
-         !strcmp((procname), "eglHibernateProcessIMG")      ||    \
-         !strcmp((procname), "eglAwakenProcessIMG"))
-
-// accesses protected by sExtensionMapMutex
-static std::unordered_map<std::string, __eglMustCastToProperFunctionPointerType> sGLExtentionMap;
-
-static int sGLExtentionSlot = 0;
-static pthread_mutex_t sExtensionMapMutex = PTHREAD_MUTEX_INITIALIZER;
-
-static void(*findProcAddress(const char* name,
-        const extention_map_t* map, size_t n))() {
-    for (uint32_t i=0 ; i<n ; i++) {
-        if (!strcmp(name, map[i].name)) {
-            return map[i].address;
-        }
-    }
-    return nullptr;
-}
-
-// ----------------------------------------------------------------------------
-
-extern void setGLHooksThreadSpecific(gl_hooks_t const *value);
-extern EGLBoolean egl_init_drivers();
-extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
-extern gl_hooks_t gHooksTrace;
-
-// ----------------------------------------------------------------------------
-
-static inline EGLContext getContext() { return egl_tls_t::getContext(); }
-
-// ----------------------------------------------------------------------------
-
-EGLDisplay eglGetDisplayImpl(EGLNativeDisplayType display)
-{
-    uintptr_t index = reinterpret_cast<uintptr_t>(display);
-    if (index >= NUM_DISPLAYS) {
-        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
-    }
-
-    EGLDisplay dpy = egl_display_t::getFromNativeDisplay(display);
-    return dpy;
-}
-
-// ----------------------------------------------------------------------------
-// Initialization
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglInitializeImpl(EGLDisplay dpy, EGLint *major, EGLint *minor)
-{
-    egl_display_ptr dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-
-    EGLBoolean res = dp->initialize(major, minor);
-
-    return res;
-}
-
-EGLBoolean eglTerminateImpl(EGLDisplay dpy)
-{
-    // NOTE: don't unload the drivers b/c some APIs can be called
-    // after eglTerminate() has been called. eglTerminate() only
-    // terminates an EGLDisplay, not a EGL itself.
-
-    egl_display_ptr dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-
-    EGLBoolean res = dp->terminate();
-
-    return res;
-}
-
-// ----------------------------------------------------------------------------
-// configuration
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglGetConfigsImpl(EGLDisplay dpy,
-                             EGLConfig *configs,
-                             EGLint config_size, EGLint *num_config)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    if (num_config==nullptr) {
-        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
-    }
-
-    EGLBoolean res = EGL_FALSE;
-    *num_config = 0;
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso) {
-        res = cnx->egl.eglGetConfigs(
-                dp->disp.dpy, configs, config_size, num_config);
-    }
-
-    return res;
-}
-
-EGLBoolean eglChooseConfigImpl( EGLDisplay dpy, const EGLint *attrib_list,
-                                EGLConfig *configs, EGLint config_size,
-                                EGLint *num_config)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    if (num_config==nullptr) {
-        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
-    }
-
-    EGLBoolean res = EGL_FALSE;
-    *num_config = 0;
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso) {
-        if (attrib_list) {
-            char value[PROPERTY_VALUE_MAX];
-            property_get("debug.egl.force_msaa", value, "false");
-
-            if (!strcmp(value, "true")) {
-                size_t attribCount = 0;
-                EGLint attrib = attrib_list[0];
-
-                // Only enable MSAA if the context is OpenGL ES 2.0 and
-                // if no caveat is requested
-                const EGLint *attribRendererable = nullptr;
-                const EGLint *attribCaveat = nullptr;
-
-                // Count the number of attributes and look for
-                // EGL_RENDERABLE_TYPE and EGL_CONFIG_CAVEAT
-                while (attrib != EGL_NONE) {
-                    attrib = attrib_list[attribCount];
-                    switch (attrib) {
-                        case EGL_RENDERABLE_TYPE:
-                            attribRendererable = &attrib_list[attribCount];
-                            break;
-                        case EGL_CONFIG_CAVEAT:
-                            attribCaveat = &attrib_list[attribCount];
-                            break;
-                        default:
-                            break;
-                    }
-                    attribCount++;
-                }
-
-                if (attribRendererable && attribRendererable[1] == EGL_OPENGL_ES2_BIT &&
-                        (!attribCaveat || attribCaveat[1] != EGL_NONE)) {
-
-                    // Insert 2 extra attributes to force-enable MSAA 4x
-                    EGLint aaAttribs[attribCount + 4];
-                    aaAttribs[0] = EGL_SAMPLE_BUFFERS;
-                    aaAttribs[1] = 1;
-                    aaAttribs[2] = EGL_SAMPLES;
-                    aaAttribs[3] = 4;
-
-                    memcpy(&aaAttribs[4], attrib_list, attribCount * sizeof(EGLint));
-
-                    EGLint numConfigAA;
-                    EGLBoolean resAA = cnx->egl.eglChooseConfig(
-                            dp->disp.dpy, aaAttribs, configs, config_size, &numConfigAA);
-
-                    if (resAA == EGL_TRUE && numConfigAA > 0) {
-                        ALOGD("Enabling MSAA 4x");
-                        *num_config = numConfigAA;
-                        return resAA;
-                    }
-                }
-            }
-        }
-
-        res = cnx->egl.eglChooseConfig(
-                dp->disp.dpy, attrib_list, configs, config_size, num_config);
-    }
-    return res;
-}
-
-EGLBoolean eglGetConfigAttribImpl(EGLDisplay dpy, EGLConfig config,
-        EGLint attribute, EGLint *value)
-{
-    egl_connection_t* cnx = nullptr;
-    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
-    if (!dp) return EGL_FALSE;
-
-    return cnx->egl.eglGetConfigAttrib(
-            dp->disp.dpy, config, attribute, value);
-}
-
-// ----------------------------------------------------------------------------
-// surfaces
-// ----------------------------------------------------------------------------
-
-// Translates EGL color spaces to Android data spaces.
-static android_dataspace dataSpaceFromEGLColorSpace(EGLint colorspace) {
-    if (colorspace == EGL_GL_COLORSPACE_LINEAR_KHR) {
-        return HAL_DATASPACE_UNKNOWN;
-    } else if (colorspace == EGL_GL_COLORSPACE_SRGB_KHR) {
-        return HAL_DATASPACE_SRGB;
-    } else if (colorspace == EGL_GL_COLORSPACE_DISPLAY_P3_EXT) {
-        return HAL_DATASPACE_DISPLAY_P3;
-    } else if (colorspace == EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT) {
-        return HAL_DATASPACE_DISPLAY_P3_LINEAR;
-    } else if (colorspace == EGL_GL_COLORSPACE_SCRGB_EXT) {
-        return HAL_DATASPACE_V0_SCRGB;
-    } else if (colorspace == EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT) {
-        return HAL_DATASPACE_V0_SCRGB_LINEAR;
-    } else if (colorspace == EGL_GL_COLORSPACE_BT2020_LINEAR_EXT) {
-        return HAL_DATASPACE_BT2020_LINEAR;
-    } else if (colorspace == EGL_GL_COLORSPACE_BT2020_PQ_EXT) {
-        return HAL_DATASPACE_BT2020_PQ;
-    }
-    return HAL_DATASPACE_UNKNOWN;
-}
-
-// Get the colorspace value that should be reported from queries. When the colorspace
-// is unknown (no attribute passed), default to reporting LINEAR.
-static EGLint getReportedColorSpace(EGLint colorspace) {
-    return colorspace == EGL_UNKNOWN ? EGL_GL_COLORSPACE_LINEAR_KHR : colorspace;
-}
-
-// Returns a list of color spaces understood by the vendor EGL driver.
-static std::vector<EGLint> getDriverColorSpaces(egl_display_ptr dp,
-                                                android_pixel_format format) {
-    std::vector<EGLint> colorSpaces;
-    if (!dp->hasColorSpaceSupport) return colorSpaces;
-
-    // OpenGL drivers only support sRGB encoding with 8-bit formats.
-    // RGB_888 is never returned by getNativePixelFormat, but is included for completeness.
-    const bool formatSupportsSRGBEncoding =
-        format == HAL_PIXEL_FORMAT_RGBA_8888 || format == HAL_PIXEL_FORMAT_RGBX_8888 ||
-        format == HAL_PIXEL_FORMAT_RGB_888;
-    const bool formatIsFloatingPoint = format == HAL_PIXEL_FORMAT_RGBA_FP16;
-
-    if (formatSupportsSRGBEncoding) {
-        // sRGB and linear are always supported when color space support is present.
-        colorSpaces.push_back(EGL_GL_COLORSPACE_SRGB_KHR);
-        colorSpaces.push_back(EGL_GL_COLORSPACE_LINEAR_KHR);
-        // DCI-P3 uses the sRGB transfer function, so it's only relevant for 8-bit formats.
-        if (findExtension(dp->disp.queryString.extensions,
-                              "EGL_EXT_gl_colorspace_display_p3")) {
-            colorSpaces.push_back(EGL_GL_COLORSPACE_DISPLAY_P3_EXT);
-        }
-    }
-
-    // According to the spec, scRGB is only supported for floating point formats.
-    // For non-linear scRGB, the application is responsible for applying the
-    // transfer function.
-    if (formatIsFloatingPoint) {
-        if (findExtension(dp->disp.queryString.extensions,
-                  "EGL_EXT_gl_colorspace_scrgb")) {
-            colorSpaces.push_back(EGL_GL_COLORSPACE_SCRGB_EXT);
-        }
-        if (findExtension(dp->disp.queryString.extensions,
-                  "EGL_EXT_gl_colorspace_scrgb_linear")) {
-            colorSpaces.push_back(EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT);
-        }
-    }
-
-    // BT2020 can be used with any pixel format. PQ encoding must be applied by the
-    // application and does not affect the behavior of OpenGL.
-    if (findExtension(dp->disp.queryString.extensions,
-                          "EGL_EXT_gl_colorspace_bt2020_linear")) {
-        colorSpaces.push_back(EGL_GL_COLORSPACE_BT2020_LINEAR_EXT);
-    }
-    if (findExtension(dp->disp.queryString.extensions,
-                          "EGL_EXT_gl_colorspace_bt2020_pq")) {
-        colorSpaces.push_back(EGL_GL_COLORSPACE_BT2020_PQ_EXT);
-    }
-
-    // Linear DCI-P3 simply uses different primaries than standard RGB and thus
-    // can be used with any pixel format.
-    if (findExtension(dp->disp.queryString.extensions,
-                          "EGL_EXT_gl_colorspace_display_p3_linear")) {
-        colorSpaces.push_back(EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT);
-    }
-    return colorSpaces;
-}
-
-// Cleans up color space related parameters that the driver does not understand.
-// If there is no color space attribute in attrib_list, colorSpace is left
-// unmodified.
-static EGLBoolean processAttributes(egl_display_ptr dp, NativeWindowType window,
-                                    android_pixel_format format, const EGLint* attrib_list,
-                                    EGLint* colorSpace,
-                                    std::vector<EGLint>* strippedAttribList) {
-    for (const EGLint* attr = attrib_list; attr && attr[0] != EGL_NONE; attr += 2) {
-        bool copyAttribute = true;
-        if (attr[0] == EGL_GL_COLORSPACE_KHR) {
-            // Fail immediately if the driver doesn't have color space support at all.
-            if (!dp->hasColorSpaceSupport) return false;
-            *colorSpace = attr[1];
-
-            // Strip the attribute if the driver doesn't understand it.
-            copyAttribute = false;
-            std::vector<EGLint> driverColorSpaces = getDriverColorSpaces(dp, format);
-            for (auto driverColorSpace : driverColorSpaces) {
-                if (attr[1] == driverColorSpace) {
-                    copyAttribute = true;
-                    break;
-                }
-            }
-
-            // If the driver doesn't understand it, we should map sRGB-encoded P3 to
-            // sRGB rather than just dropping the colorspace on the floor.
-            // For this format, the driver is expected to apply the sRGB
-            // transfer function during framebuffer operations.
-            if (!copyAttribute && attr[1] == EGL_GL_COLORSPACE_DISPLAY_P3_EXT) {
-                strippedAttribList->push_back(attr[0]);
-                strippedAttribList->push_back(EGL_GL_COLORSPACE_SRGB_KHR);
-            }
-        }
-        if (copyAttribute) {
-            strippedAttribList->push_back(attr[0]);
-            strippedAttribList->push_back(attr[1]);
-        }
-    }
-    // Terminate the attribute list.
-    strippedAttribList->push_back(EGL_NONE);
-
-    // If the passed color space has wide color gamut, check whether the target native window
-    // supports wide color.
-    const bool colorSpaceIsNarrow =
-        *colorSpace == EGL_GL_COLORSPACE_SRGB_KHR ||
-        *colorSpace == EGL_GL_COLORSPACE_LINEAR_KHR ||
-        *colorSpace == EGL_UNKNOWN;
-    if (window && !colorSpaceIsNarrow) {
-        bool windowSupportsWideColor = true;
-        // Ordinarily we'd put a call to native_window_get_wide_color_support
-        // at the beginning of the function so that we'll have the
-        // result when needed elsewhere in the function.
-        // However, because eglCreateWindowSurface is called by SurfaceFlinger and
-        // SurfaceFlinger is required to answer the call below we would
-        // end up in a deadlock situation. By moving the call to only happen
-        // if the application has specifically asked for wide-color we avoid
-        // the deadlock with SurfaceFlinger since it will not ask for a
-        // wide-color surface.
-        int err = native_window_get_wide_color_support(window, &windowSupportsWideColor);
-
-        if (err) {
-            ALOGE("processAttributes: invalid window (win=%p) "
-                  "failed (%#x) (already connected to another API?)",
-                  window, err);
-            return false;
-        }
-        if (!windowSupportsWideColor) {
-            // Application has asked for a wide-color colorspace but
-            // wide-color support isn't available on the display the window is on.
-            return false;
-        }
-    }
-    return true;
-}
-
-// Gets the native pixel format corrsponding to the passed EGLConfig.
-void getNativePixelFormat(EGLDisplay dpy, egl_connection_t* cnx, EGLConfig config,
-                          android_pixel_format* format) {
-    // Set the native window's buffers format to match what this config requests.
-    // Whether to use sRGB gamma is not part of the EGLconfig, but is part
-    // of our native format. So if sRGB gamma is requested, we have to
-    // modify the EGLconfig's format before setting the native window's
-    // format.
-
-    EGLint componentType = EGL_COLOR_COMPONENT_TYPE_FIXED_EXT;
-    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_COLOR_COMPONENT_TYPE_EXT, &componentType);
-
-    EGLint a = 0;
-    EGLint r, g, b;
-    r = g = b = 0;
-    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_RED_SIZE, &r);
-    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_GREEN_SIZE, &g);
-    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_BLUE_SIZE, &b);
-    cnx->egl.eglGetConfigAttrib(dpy, config, EGL_ALPHA_SIZE, &a);
-    EGLint colorDepth = r + g + b;
-
-    // Today, the driver only understands sRGB and linear on 888X
-    // formats. Strip other colorspaces from the attribute list and
-    // only use them to set the dataspace via
-    // native_window_set_buffers_dataspace
-    // if pixel format is RGBX 8888
-    //    TBD: Can test for future extensions that indicate that driver
-    //    handles requested color space and we can let it through.
-    //    allow SRGB and LINEAR. All others need to be stripped.
-    // else if 565, 4444
-    //    TBD: Can we assume these are supported if 8888 is?
-    // else if FP16 or 1010102
-    //    strip colorspace from attribs.
-    // endif
-    if (a == 0) {
-        if (colorDepth <= 16) {
-            *format = HAL_PIXEL_FORMAT_RGB_565;
-        } else {
-            if (componentType == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT) {
-                if (colorDepth > 24) {
-                    *format = HAL_PIXEL_FORMAT_RGBA_1010102;
-                } else {
-                    *format = HAL_PIXEL_FORMAT_RGBX_8888;
-                }
-            } else {
-                *format = HAL_PIXEL_FORMAT_RGBA_FP16;
-            }
-        }
-    } else {
-        if (componentType == EGL_COLOR_COMPONENT_TYPE_FIXED_EXT) {
-            if (colorDepth > 24) {
-                *format = HAL_PIXEL_FORMAT_RGBA_1010102;
-            } else {
-                *format = HAL_PIXEL_FORMAT_RGBA_8888;
-            }
-        } else {
-            *format = HAL_PIXEL_FORMAT_RGBA_FP16;
-        }
-    }
-}
-
-EGLBoolean sendSurfaceMetadata(egl_surface_t* s) {
-    android_smpte2086_metadata smpteMetadata;
-    if (s->getSmpte2086Metadata(smpteMetadata)) {
-        int err =
-                native_window_set_buffers_smpte2086_metadata(s->getNativeWindow(), &smpteMetadata);
-        s->resetSmpte2086Metadata();
-        if (err != 0) {
-            ALOGE("error setting native window smpte2086 metadata: %s (%d)",
-                  strerror(-err), err);
-            return EGL_FALSE;
-        }
-    }
-    android_cta861_3_metadata cta8613Metadata;
-    if (s->getCta8613Metadata(cta8613Metadata)) {
-        int err =
-                native_window_set_buffers_cta861_3_metadata(s->getNativeWindow(), &cta8613Metadata);
-        s->resetCta8613Metadata();
-        if (err != 0) {
-            ALOGE("error setting native window CTS 861.3 metadata: %s (%d)",
-                  strerror(-err), err);
-            return EGL_FALSE;
-        }
-    }
-    return EGL_TRUE;
-}
-
-EGLSurface eglCreateWindowSurfaceImpl(  EGLDisplay dpy, EGLConfig config,
-                                        NativeWindowType window,
-                                        const EGLint *attrib_list)
-{
-    const EGLint *origAttribList = attrib_list;
-
-    egl_connection_t* cnx = nullptr;
-    egl_display_ptr dp = validate_display_connection(dpy, cnx);
-    if (dp) {
-        if (!window) {
-            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
-        }
-
-        int value = 0;
-        window->query(window, NATIVE_WINDOW_IS_VALID, &value);
-        if (!value) {
-            return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
-        }
-
-        // NOTE: When using Vulkan backend, the Vulkan runtime makes all the
-        // native_window_* calls, so don't do them here.
-        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
-            int result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL);
-            if (result < 0) {
-                ALOGE("eglCreateWindowSurface: native_window_api_connect (win=%p) "
-                      "failed (%#x) (already connected to another API?)",
-                      window, result);
-                return setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
-            }
-        }
-
-        EGLDisplay iDpy = dp->disp.dpy;
-        android_pixel_format format;
-        getNativePixelFormat(iDpy, cnx, config, &format);
-
-        // now select correct colorspace and dataspace based on user's attribute list
-        EGLint colorSpace = EGL_UNKNOWN;
-        std::vector<EGLint> strippedAttribList;
-        if (!processAttributes(dp, window, format, attrib_list, &colorSpace,
-                               &strippedAttribList)) {
-            ALOGE("error invalid colorspace: %d", colorSpace);
-            return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
-        }
-        attrib_list = strippedAttribList.data();
-
-        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
-            int err = native_window_set_buffers_format(window, format);
-            if (err != 0) {
-                ALOGE("error setting native window pixel format: %s (%d)",
-                      strerror(-err), err);
-                native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
-                return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
-            }
-
-            android_dataspace dataSpace = dataSpaceFromEGLColorSpace(colorSpace);
-            if (dataSpace != HAL_DATASPACE_UNKNOWN) {
-                err = native_window_set_buffers_data_space(window, dataSpace);
-                if (err != 0) {
-                    ALOGE("error setting native window pixel dataSpace: %s (%d)", strerror(-err),
-                          err);
-                    native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
-                    return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
-                }
-            }
-        }
-
-        // the EGL spec requires that a new EGLSurface default to swap interval
-        // 1, so explicitly set that on the window here.
-        ANativeWindow* anw = reinterpret_cast<ANativeWindow*>(window);
-        anw->setSwapInterval(anw, 1);
-
-        EGLSurface surface = cnx->egl.eglCreateWindowSurface(
-                iDpy, config, window, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s =
-                    new egl_surface_t(dp.get(), config, window, surface,
-                                      getReportedColorSpace(colorSpace), cnx);
-            return s;
-        }
-
-        // EGLSurface creation failed
-        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
-            native_window_set_buffers_format(window, 0);
-            native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLSurface eglCreatePixmapSurfaceImpl(  EGLDisplay dpy, EGLConfig config,
-                                        NativePixmapType pixmap,
-                                        const EGLint *attrib_list)
-{
-    egl_connection_t* cnx = nullptr;
-    egl_display_ptr dp = validate_display_connection(dpy, cnx);
-    if (dp) {
-        EGLDisplay iDpy = dp->disp.dpy;
-        android_pixel_format format;
-        getNativePixelFormat(iDpy, cnx, config, &format);
-
-        // now select a corresponding sRGB format if needed
-        EGLint colorSpace = EGL_UNKNOWN;
-        std::vector<EGLint> strippedAttribList;
-        if (!processAttributes(dp, nullptr, format, attrib_list, &colorSpace,
-                               &strippedAttribList)) {
-            ALOGE("error invalid colorspace: %d", colorSpace);
-            return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
-        }
-        attrib_list = strippedAttribList.data();
-
-        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
-                dp->disp.dpy, config, pixmap, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s =
-                    new egl_surface_t(dp.get(), config, nullptr, surface,
-                                      getReportedColorSpace(colorSpace), cnx);
-            return s;
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLSurface eglCreatePbufferSurfaceImpl( EGLDisplay dpy, EGLConfig config,
-                                        const EGLint *attrib_list)
-{
-    egl_connection_t* cnx = nullptr;
-    egl_display_ptr dp = validate_display_connection(dpy, cnx);
-    if (dp) {
-        EGLDisplay iDpy = dp->disp.dpy;
-        android_pixel_format format;
-        getNativePixelFormat(iDpy, cnx, config, &format);
-
-        // Select correct colorspace based on user's attribute list
-        EGLint colorSpace = EGL_UNKNOWN;
-        std::vector<EGLint> strippedAttribList;
-        if (!processAttributes(dp, nullptr, format, attrib_list, &colorSpace,
-                               &strippedAttribList)) {
-            ALOGE("error invalid colorspace: %d", colorSpace);
-            return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
-        }
-        attrib_list = strippedAttribList.data();
-
-        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
-                dp->disp.dpy, config, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s =
-                    new egl_surface_t(dp.get(), config, nullptr, surface,
-                                      getReportedColorSpace(colorSpace), cnx);
-            return s;
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLBoolean eglDestroySurfaceImpl(EGLDisplay dpy, EGLSurface surface)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t * const s = get_surface(surface);
-    EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
-    if (result == EGL_TRUE) {
-        _s.terminate();
-    }
-    return result;
-}
-
-EGLBoolean eglQuerySurfaceImpl( EGLDisplay dpy, EGLSurface surface,
-                                EGLint attribute, EGLint *value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->getColorSpaceAttribute(attribute, value)) {
-        return EGL_TRUE;
-    } else if (s->getSmpte2086Attribute(attribute, value)) {
-        return EGL_TRUE;
-    } else if (s->getCta8613Attribute(attribute, value)) {
-        return EGL_TRUE;
-    }
-    return s->cnx->egl.eglQuerySurface(dp->disp.dpy, s->surface, attribute, value);
-}
-
-void EGLAPI eglBeginFrameImpl(EGLDisplay dpy, EGLSurface surface) {
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return;
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        setError(EGL_BAD_SURFACE, EGL_FALSE);
-    }
-}
-
-// ----------------------------------------------------------------------------
-// Contexts
-// ----------------------------------------------------------------------------
-
-EGLContext eglCreateContextImpl(EGLDisplay dpy, EGLConfig config,
-                                EGLContext share_list, const EGLint *attrib_list)
-{
-    egl_connection_t* cnx = nullptr;
-    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
-    if (dp) {
-        if (share_list != EGL_NO_CONTEXT) {
-            if (!ContextRef(dp.get(), share_list).get()) {
-                return setError(EGL_BAD_CONTEXT, EGL_NO_CONTEXT);
-            }
-            egl_context_t* const c = get_context(share_list);
-            share_list = c->context;
-        }
-        EGLContext context = cnx->egl.eglCreateContext(
-                dp->disp.dpy, config, share_list, attrib_list);
-        if (context != EGL_NO_CONTEXT) {
-            // figure out if it's a GLESv1 or GLESv2
-            int version = 0;
-            if (attrib_list) {
-                while (*attrib_list != EGL_NONE) {
-                    GLint attr = *attrib_list++;
-                    GLint value = *attrib_list++;
-                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
-                        if (value == 1) {
-                            version = egl_connection_t::GLESv1_INDEX;
-                        } else if (value == 2 || value == 3) {
-                            version = egl_connection_t::GLESv2_INDEX;
-                        }
-                    }
-                };
-            }
-            egl_context_t* c = new egl_context_t(dpy, context, config, cnx,
-                    version);
-            return c;
-        }
-    }
-    return EGL_NO_CONTEXT;
-}
-
-EGLBoolean eglDestroyContextImpl(EGLDisplay dpy, EGLContext ctx)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp)
-        return EGL_FALSE;
-
-    ContextRef _c(dp.get(), ctx);
-    if (!_c.get())
-        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
-
-    egl_context_t * const c = get_context(ctx);
-    EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
-    if (result == EGL_TRUE) {
-        _c.terminate();
-    }
-    return result;
-}
-
-EGLBoolean eglMakeCurrentImpl(  EGLDisplay dpy, EGLSurface draw,
-                                EGLSurface read, EGLContext ctx)
-{
-    egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-
-    // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
-    // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
-    // a valid but uninitialized display.
-    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
-         (draw != EGL_NO_SURFACE) ) {
-        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
-    }
-
-    // get a reference to the object passed in
-    ContextRef _c(dp.get(), ctx);
-    SurfaceRef _d(dp.get(), draw);
-    SurfaceRef _r(dp.get(), read);
-
-    // validate the context (if not EGL_NO_CONTEXT)
-    if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
-        // EGL_NO_CONTEXT is valid
-        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
-    }
-
-    // these are the underlying implementation's object
-    EGLContext impl_ctx  = EGL_NO_CONTEXT;
-    EGLSurface impl_draw = EGL_NO_SURFACE;
-    EGLSurface impl_read = EGL_NO_SURFACE;
-
-    // these are our objects structs passed in
-    egl_context_t       * c = nullptr;
-    egl_surface_t const * d = nullptr;
-    egl_surface_t const * r = nullptr;
-
-    // these are the current objects structs
-    egl_context_t * cur_c = get_context(getContext());
-
-    if (ctx != EGL_NO_CONTEXT) {
-        c = get_context(ctx);
-        impl_ctx = c->context;
-    } else {
-        // no context given, use the implementation of the current context
-        if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
-            // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
-            return setError(EGL_BAD_MATCH, (EGLBoolean)EGL_FALSE);
-        }
-        if (cur_c == nullptr) {
-            // no current context
-            // not an error, there is just no current context.
-            return EGL_TRUE;
-        }
-    }
-
-    // retrieve the underlying implementation's draw EGLSurface
-    if (draw != EGL_NO_SURFACE) {
-        if (!_d.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-        d = get_surface(draw);
-        impl_draw = d->surface;
-    }
-
-    // retrieve the underlying implementation's read EGLSurface
-    if (read != EGL_NO_SURFACE) {
-        if (!_r.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-        r = get_surface(read);
-        impl_read = r->surface;
-    }
-
-
-    EGLBoolean result = dp->makeCurrent(c, cur_c,
-            draw, read, ctx,
-            impl_draw, impl_read, impl_ctx);
-
-    if (result == EGL_TRUE) {
-        if (c) {
-            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
-            egl_tls_t::setContext(ctx);
-            _c.acquire();
-            _r.acquire();
-            _d.acquire();
-        } else {
-            setGLHooksThreadSpecific(&gHooksNoContext);
-            egl_tls_t::setContext(EGL_NO_CONTEXT);
-        }
-    } else {
-        // this will ALOGE the error
-        egl_connection_t* const cnx = &gEGLImpl;
-        result = setError(cnx->egl.eglGetError(), (EGLBoolean)EGL_FALSE);
-    }
-    return result;
-}
-
-EGLBoolean eglQueryContextImpl( EGLDisplay dpy, EGLContext ctx,
-                                EGLint attribute, EGLint *value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    ContextRef _c(dp.get(), ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
-
-    egl_context_t * const c = get_context(ctx);
-    return c->cnx->egl.eglQueryContext(
-            dp->disp.dpy, c->context, attribute, value);
-
-}
-
-EGLContext eglGetCurrentContextImpl(void)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would correctly return EGL_NO_CONTEXT.
-    EGLContext ctx = getContext();
-    return ctx;
-}
-
-EGLSurface eglGetCurrentSurfaceImpl(EGLint readdraw)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would correctly return EGL_NO_SURFACE.
-
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
-        switch (readdraw) {
-            case EGL_READ: return c->read;
-            case EGL_DRAW: return c->draw;
-            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLDisplay eglGetCurrentDisplayImpl(void)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would correctly return EGL_NO_DISPLAY.
-
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
-        return c->dpy;
-    }
-    return EGL_NO_DISPLAY;
-}
-
-EGLBoolean eglWaitGLImpl(void)
-{
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
-
-    return cnx->egl.eglWaitGL();
-}
-
-EGLBoolean eglWaitNativeImpl(EGLint engine)
-{
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
-
-    return cnx->egl.eglWaitNative(engine);
-}
-
-EGLint eglGetErrorImpl(void)
-{
-    EGLint err = EGL_SUCCESS;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso) {
-        err = cnx->egl.eglGetError();
-    }
-    if (err == EGL_SUCCESS) {
-        err = egl_tls_t::getError();
-    }
-    return err;
-}
-
-static __eglMustCastToProperFunctionPointerType findBuiltinWrapper(
-        const char* procname) {
-    const egl_connection_t* cnx = &gEGLImpl;
-    void* proc = nullptr;
-
-    proc = dlsym(cnx->libEgl, procname);
-    if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
-
-    proc = dlsym(cnx->libGles2, procname);
-    if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
-
-    proc = dlsym(cnx->libGles1, procname);
-    if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
-
-    return nullptr;
-}
-
-__eglMustCastToProperFunctionPointerType eglGetProcAddressImpl(const char *procname)
-{
-    if (FILTER_EXTENSIONS(procname)) {
-        return nullptr;
-    }
-
-    __eglMustCastToProperFunctionPointerType addr;
-    addr = findProcAddress(procname, sExtensionMap, NELEM(sExtensionMap));
-    if (addr) return addr;
-
-    addr = findBuiltinWrapper(procname);
-    if (addr) return addr;
-
-    // this protects accesses to sGLExtentionMap and sGLExtentionSlot
-    pthread_mutex_lock(&sExtensionMapMutex);
-
-    /*
-     * Since eglGetProcAddress() is not associated to anything, it needs
-     * to return a function pointer that "works" regardless of what
-     * the current context is.
-     *
-     * For this reason, we return a "forwarder", a small stub that takes
-     * care of calling the function associated with the context
-     * currently bound.
-     *
-     * We first look for extensions we've already resolved, if we're seeing
-     * this extension for the first time, we go through all our
-     * implementations and call eglGetProcAddress() and record the
-     * result in the appropriate implementation hooks and return the
-     * address of the forwarder corresponding to that hook set.
-     *
-     */
-
-    const std::string name(procname);
-
-    auto& extentionMap = sGLExtentionMap;
-    auto pos = extentionMap.find(name);
-    addr = (pos != extentionMap.end()) ? pos->second : nullptr;
-    const int slot = sGLExtentionSlot;
-
-    ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
-             "no more slots for eglGetProcAddress(\"%s\")",
-             procname);
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    LayerLoader& layer_loader(LayerLoader::getInstance());
-
-    if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
-
-        if (cnx->dso && cnx->egl.eglGetProcAddress) {
-
-            // Extensions are independent of the bound context
-            addr = cnx->egl.eglGetProcAddress(procname);
-            if (addr) {
-
-                // purposefully track the bottom of the stack in extensionMap
-                extentionMap[name] = addr;
-
-                // Apply layers
-                addr = layer_loader.ApplyLayers(procname, addr);
-
-                // Track the top most entry point
-                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
-                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] = addr;
-                addr = gExtensionForwarders[slot];
-                sGLExtentionSlot++;
-            }
-        }
-
-    } else if (slot < MAX_NUMBER_OF_GL_EXTENSIONS) {
-
-        // We've seen this func before, but we tracked the bottom, so re-apply layers
-        // More layers might have been enabled
-        addr = layer_loader.ApplyLayers(procname, addr);
-
-        // Track the top most entry point
-        cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
-        cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] = addr;
-        addr = gExtensionForwarders[slot];
-    }
-
-    pthread_mutex_unlock(&sExtensionMapMutex);
-    return addr;
-}
-
-class FrameCompletionThread {
-public:
-
-    static void queueSync(EGLSyncKHR sync) {
-        static FrameCompletionThread thread;
-
-        char name[64];
-
-        std::lock_guard<std::mutex> lock(thread.mMutex);
-        snprintf(name, sizeof(name), "kicked off frame %u", (unsigned int)thread.mFramesQueued);
-        ATRACE_NAME(name);
-
-        thread.mQueue.push_back(sync);
-        thread.mCondition.notify_one();
-        thread.mFramesQueued++;
-        ATRACE_INT("GPU Frames Outstanding", int32_t(thread.mQueue.size()));
-    }
-
-private:
-
-    FrameCompletionThread() : mFramesQueued(0), mFramesCompleted(0) {
-        std::thread thread(&FrameCompletionThread::loop, this);
-        thread.detach();
-    }
-
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wmissing-noreturn"
-    void loop() {
-        while (true) {
-            threadLoop();
-        }
-    }
-#pragma clang diagnostic pop
-
-    void threadLoop() {
-        EGLSyncKHR sync;
-        uint32_t frameNum;
-        {
-            std::unique_lock<std::mutex> lock(mMutex);
-            while (mQueue.empty()) {
-                mCondition.wait(lock);
-            }
-            sync = mQueue[0];
-            frameNum = mFramesCompleted;
-        }
-        EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-        {
-            char name[64];
-            snprintf(name, sizeof(name), "waiting for frame %u", (unsigned int)frameNum);
-            ATRACE_NAME(name);
-
-            EGLint result = eglClientWaitSyncKHR(dpy, sync, 0, EGL_FOREVER_KHR);
-            if (result == EGL_FALSE) {
-                ALOGE("FrameCompletion: error waiting for fence: %#x", eglGetError());
-            } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
-                ALOGE("FrameCompletion: timeout waiting for fence");
-            }
-            eglDestroySyncKHR(dpy, sync);
-        }
-        {
-            std::lock_guard<std::mutex> lock(mMutex);
-            mQueue.pop_front();
-            mFramesCompleted++;
-            ATRACE_INT("GPU Frames Outstanding", int32_t(mQueue.size()));
-        }
-    }
-
-    uint32_t mFramesQueued;
-    uint32_t mFramesCompleted;
-    std::deque<EGLSyncKHR> mQueue;
-    std::condition_variable mCondition;
-    std::mutex mMutex;
-};
-
-EGLBoolean eglSwapBuffersWithDamageKHRImpl(EGLDisplay dpy, EGLSurface draw,
-        EGLint *rects, EGLint n_rects)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), draw);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t* const s = get_surface(draw);
-
-    if (CC_UNLIKELY(dp->traceGpuCompletion)) {
-        EGLSyncKHR sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, nullptr);
-        if (sync != EGL_NO_SYNC_KHR) {
-            FrameCompletionThread::queueSync(sync);
-        }
-    }
-
-    if (CC_UNLIKELY(dp->finishOnSwap)) {
-        uint32_t pixel;
-        egl_context_t * const c = get_context( egl_tls_t::getContext() );
-        if (c) {
-            // glReadPixels() ensures that the frame is complete
-            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
-                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
-        }
-    }
-
-    if (s->cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
-        if (!sendSurfaceMetadata(s)) {
-            native_window_api_disconnect(s->getNativeWindow(), NATIVE_WINDOW_API_EGL);
-            return setError(EGL_BAD_NATIVE_WINDOW, (EGLBoolean)EGL_FALSE);
-        }
-    }
-
-    if (n_rects == 0) {
-        return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
-    }
-
-    std::vector<android_native_rect_t> androidRects((size_t)n_rects);
-    for (int r = 0; r < n_rects; ++r) {
-        int offset = r * 4;
-        int x = rects[offset];
-        int y = rects[offset + 1];
-        int width = rects[offset + 2];
-        int height = rects[offset + 3];
-        android_native_rect_t androidRect;
-        androidRect.left = x;
-        androidRect.top = y + height;
-        androidRect.right = x + width;
-        androidRect.bottom = y;
-        androidRects.push_back(androidRect);
-    }
-    if (s->cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
-        native_window_set_surface_damage(s->getNativeWindow(), androidRects.data(),
-                                         androidRects.size());
-    }
-
-    if (s->cnx->egl.eglSwapBuffersWithDamageKHR) {
-        return s->cnx->egl.eglSwapBuffersWithDamageKHR(dp->disp.dpy, s->surface,
-                rects, n_rects);
-    } else {
-        return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
-    }
-}
-
-EGLBoolean eglSwapBuffersImpl(EGLDisplay dpy, EGLSurface surface)
-{
-    return eglSwapBuffersWithDamageKHRImpl(dpy, surface, nullptr, 0);
-}
-
-EGLBoolean eglCopyBuffersImpl(  EGLDisplay dpy, EGLSurface surface,
-                                NativePixmapType target)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t const * const s = get_surface(surface);
-    return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
-}
-
-const char* eglQueryStringImpl(EGLDisplay dpy, EGLint name)
-{
-    // Generate an error quietly when client extensions (as defined by
-    // EGL_EXT_client_extensions) are queried.  We do not want to rely on
-    // validate_display to generate the error as validate_display would log
-    // the error, which can be misleading.
-    //
-    // If we want to support EGL_EXT_client_extensions later, we can return
-    // the client extension string here instead.
-    if (dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
-        return setErrorQuiet(EGL_BAD_DISPLAY, (const char*)nullptr);
-
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return (const char *) nullptr;
-
-    switch (name) {
-        case EGL_VENDOR:
-            return dp->getVendorString();
-        case EGL_VERSION:
-            return dp->getVersionString();
-        case EGL_EXTENSIONS:
-            return dp->getExtensionString();
-        case EGL_CLIENT_APIS:
-            return dp->getClientApiString();
-        default:
-            break;
-    }
-    return setError(EGL_BAD_PARAMETER, (const char *)nullptr);
-}
-
-EGLAPI const char* eglQueryStringImplementationANDROIDImpl(EGLDisplay dpy, EGLint name)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return (const char *) nullptr;
-
-    switch (name) {
-        case EGL_VENDOR:
-            return dp->disp.queryString.vendor;
-        case EGL_VERSION:
-            return dp->disp.queryString.version;
-        case EGL_EXTENSIONS:
-            return dp->disp.queryString.extensions;
-        case EGL_CLIENT_APIS:
-            return dp->disp.queryString.clientApi;
-        default:
-            break;
-    }
-    return setError(EGL_BAD_PARAMETER, (const char *)nullptr);
-}
-
-// ----------------------------------------------------------------------------
-// EGL 1.1
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglSurfaceAttribImpl(
-        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t * const s = get_surface(surface);
-
-    if (attribute == EGL_FRONT_BUFFER_AUTO_REFRESH_ANDROID) {
-        if (!s->getNativeWindow()) {
-            setError(EGL_BAD_SURFACE, EGL_FALSE);
-        }
-        int err = native_window_set_auto_refresh(s->getNativeWindow(), value != 0);
-        return (err == 0) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    if (attribute == EGL_TIMESTAMPS_ANDROID) {
-        if (!s->getNativeWindow()) {
-            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-        }
-        int err = native_window_enable_frame_timestamps(s->getNativeWindow(), value != 0);
-        return (err == 0) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    if (s->setSmpte2086Attribute(attribute, value)) {
-        return EGL_TRUE;
-    } else if (s->setCta8613Attribute(attribute, value)) {
-        return EGL_TRUE;
-    } else if (s->cnx->egl.eglSurfaceAttrib) {
-        return s->cnx->egl.eglSurfaceAttrib(
-                dp->disp.dpy, s->surface, attribute, value);
-    }
-    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-}
-
-EGLBoolean eglBindTexImageImpl(
-        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglBindTexImage) {
-        return s->cnx->egl.eglBindTexImage(
-                dp->disp.dpy, s->surface, buffer);
-    }
-    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-}
-
-EGLBoolean eglReleaseTexImageImpl(
-        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglReleaseTexImage) {
-        return s->cnx->egl.eglReleaseTexImage(
-                dp->disp.dpy, s->surface, buffer);
-    }
-    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-}
-
-EGLBoolean eglSwapIntervalImpl(EGLDisplay dpy, EGLint interval)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean res = EGL_TRUE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglSwapInterval) {
-        res = cnx->egl.eglSwapInterval(dp->disp.dpy, interval);
-    }
-
-    return res;
-}
-
-
-// ----------------------------------------------------------------------------
-// EGL 1.2
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglWaitClientImpl(void)
-{
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
-
-    EGLBoolean res;
-    if (cnx->egl.eglWaitClient) {
-        res = cnx->egl.eglWaitClient();
-    } else {
-        res = cnx->egl.eglWaitGL();
-    }
-    return res;
-}
-
-EGLBoolean eglBindAPIImpl(EGLenum api)
-{
-    // bind this API on all EGLs
-    EGLBoolean res = EGL_TRUE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglBindAPI) {
-        res = cnx->egl.eglBindAPI(api);
-    }
-    return res;
-}
-
-EGLenum eglQueryAPIImpl(void)
-{
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglQueryAPI) {
-        return cnx->egl.eglQueryAPI();
-    }
-
-    // or, it can only be OpenGL ES
-    return EGL_OPENGL_ES_API;
-}
-
-EGLBoolean eglReleaseThreadImpl(void)
-{
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglReleaseThread) {
-        cnx->egl.eglReleaseThread();
-    }
-
-    // If there is context bound to the thread, release it
-    egl_display_t::loseCurrent(get_context(getContext()));
-
-    egl_tls_t::clearTLS();
-    return EGL_TRUE;
-}
-
-EGLSurface eglCreatePbufferFromClientBufferImpl(
-          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
-          EGLConfig config, const EGLint *attrib_list)
-{
-    egl_connection_t* cnx = nullptr;
-    const egl_display_ptr dp = validate_display_connection(dpy, cnx);
-    if (!dp) return EGL_FALSE;
-    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
-        return cnx->egl.eglCreatePbufferFromClientBuffer(
-                dp->disp.dpy, buftype, buffer, config, attrib_list);
-    }
-    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
-}
-
-// ----------------------------------------------------------------------------
-// EGL_EGLEXT_VERSION 3
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglLockSurfaceKHRImpl(EGLDisplay dpy, EGLSurface surface,
-        const EGLint *attrib_list)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglLockSurfaceKHR) {
-        return s->cnx->egl.eglLockSurfaceKHR(
-                dp->disp.dpy, s->surface, attrib_list);
-    }
-    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-}
-
-EGLBoolean eglUnlockSurfaceKHRImpl(EGLDisplay dpy, EGLSurface surface)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get())
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglUnlockSurfaceKHR) {
-        return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
-    }
-    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-}
-
-EGLImageKHR eglCreateImageKHRImpl(EGLDisplay dpy, EGLContext ctx, EGLenum target,
-        EGLClientBuffer buffer, const EGLint *attrib_list)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_IMAGE_KHR;
-
-    ContextRef _c(dp.get(), ctx);
-    egl_context_t * const c = _c.get();
-
-    EGLImageKHR result = EGL_NO_IMAGE_KHR;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglCreateImageKHR) {
-        result = cnx->egl.eglCreateImageKHR(
-                dp->disp.dpy,
-                c ? c->context : EGL_NO_CONTEXT,
-                target, buffer, attrib_list);
-    }
-    return result;
-}
-
-EGLBoolean eglDestroyImageKHRImpl(EGLDisplay dpy, EGLImageKHR img)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglDestroyImageKHR) {
-        result = cnx->egl.eglDestroyImageKHR(dp->disp.dpy, img);
-    }
-    return result;
-}
-
-// ----------------------------------------------------------------------------
-// EGL_EGLEXT_VERSION 5
-// ----------------------------------------------------------------------------
-
-
-EGLSyncKHR eglCreateSyncKHRImpl(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_SYNC_KHR;
-
-    EGLSyncKHR result = EGL_NO_SYNC_KHR;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglCreateSyncKHR) {
-        result = cnx->egl.eglCreateSyncKHR(dp->disp.dpy, type, attrib_list);
-    }
-    return result;
-}
-
-EGLBoolean eglDestroySyncKHRImpl(EGLDisplay dpy, EGLSyncKHR sync)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglDestroySyncKHR) {
-        result = cnx->egl.eglDestroySyncKHR(dp->disp.dpy, sync);
-    }
-    return result;
-}
-
-EGLBoolean eglSignalSyncKHRImpl(EGLDisplay dpy, EGLSyncKHR sync, EGLenum mode) {
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglSignalSyncKHR) {
-        result = cnx->egl.eglSignalSyncKHR(
-                dp->disp.dpy, sync, mode);
-    }
-    return result;
-}
-
-EGLint eglClientWaitSyncKHRImpl(EGLDisplay dpy, EGLSyncKHR sync,
-        EGLint flags, EGLTimeKHR timeout)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLint result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
-        result = cnx->egl.eglClientWaitSyncKHR(
-                dp->disp.dpy, sync, flags, timeout);
-    }
-    return result;
-}
-
-EGLBoolean eglGetSyncAttribKHRImpl(EGLDisplay dpy, EGLSyncKHR sync,
-        EGLint attribute, EGLint *value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglGetSyncAttribKHR) {
-        result = cnx->egl.eglGetSyncAttribKHR(
-                dp->disp.dpy, sync, attribute, value);
-    }
-    return result;
-}
-
-EGLStreamKHR eglCreateStreamKHRImpl(EGLDisplay dpy, const EGLint *attrib_list)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_STREAM_KHR;
-
-    EGLStreamKHR result = EGL_NO_STREAM_KHR;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglCreateStreamKHR) {
-        result = cnx->egl.eglCreateStreamKHR(
-                dp->disp.dpy, attrib_list);
-    }
-    return result;
-}
-
-EGLBoolean eglDestroyStreamKHRImpl(EGLDisplay dpy, EGLStreamKHR stream)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglDestroyStreamKHR) {
-        result = cnx->egl.eglDestroyStreamKHR(
-                dp->disp.dpy, stream);
-    }
-    return result;
-}
-
-EGLBoolean eglStreamAttribKHRImpl(EGLDisplay dpy, EGLStreamKHR stream,
-        EGLenum attribute, EGLint value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglStreamAttribKHR) {
-        result = cnx->egl.eglStreamAttribKHR(
-                dp->disp.dpy, stream, attribute, value);
-    }
-    return result;
-}
-
-EGLBoolean eglQueryStreamKHRImpl(EGLDisplay dpy, EGLStreamKHR stream,
-        EGLenum attribute, EGLint *value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglQueryStreamKHR) {
-        result = cnx->egl.eglQueryStreamKHR(
-                dp->disp.dpy, stream, attribute, value);
-    }
-    return result;
-}
-
-EGLBoolean eglQueryStreamu64KHRImpl(EGLDisplay dpy, EGLStreamKHR stream,
-        EGLenum attribute, EGLuint64KHR *value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglQueryStreamu64KHR) {
-        result = cnx->egl.eglQueryStreamu64KHR(
-                dp->disp.dpy, stream, attribute, value);
-    }
-    return result;
-}
-
-EGLBoolean eglQueryStreamTimeKHRImpl(EGLDisplay dpy, EGLStreamKHR stream,
-        EGLenum attribute, EGLTimeKHR *value)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglQueryStreamTimeKHR) {
-        result = cnx->egl.eglQueryStreamTimeKHR(
-                dp->disp.dpy, stream, attribute, value);
-    }
-    return result;
-}
-
-EGLSurface eglCreateStreamProducerSurfaceKHRImpl(EGLDisplay dpy, EGLConfig config,
-        EGLStreamKHR stream, const EGLint *attrib_list)
-{
-    egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_SURFACE;
-
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglCreateStreamProducerSurfaceKHR) {
-        EGLSurface surface = cnx->egl.eglCreateStreamProducerSurfaceKHR(
-                dp->disp.dpy, config, stream, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s = new egl_surface_t(dp.get(), config, nullptr, surface,
-                                                 EGL_GL_COLORSPACE_LINEAR_KHR, cnx);
-            return s;
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLBoolean eglStreamConsumerGLTextureExternalKHRImpl(EGLDisplay dpy,
-        EGLStreamKHR stream)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglStreamConsumerGLTextureExternalKHR) {
-        result = cnx->egl.eglStreamConsumerGLTextureExternalKHR(
-                dp->disp.dpy, stream);
-    }
-    return result;
-}
-
-EGLBoolean eglStreamConsumerAcquireKHRImpl(EGLDisplay dpy,
-        EGLStreamKHR stream)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglStreamConsumerAcquireKHR) {
-        result = cnx->egl.eglStreamConsumerAcquireKHR(
-                dp->disp.dpy, stream);
-    }
-    return result;
-}
-
-EGLBoolean eglStreamConsumerReleaseKHRImpl(EGLDisplay dpy,
-        EGLStreamKHR stream)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglStreamConsumerReleaseKHR) {
-        result = cnx->egl.eglStreamConsumerReleaseKHR(
-                dp->disp.dpy, stream);
-    }
-    return result;
-}
-
-EGLNativeFileDescriptorKHR eglGetStreamFileDescriptorKHRImpl(
-        EGLDisplay dpy, EGLStreamKHR stream)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_FILE_DESCRIPTOR_KHR;
-
-    EGLNativeFileDescriptorKHR result = EGL_NO_FILE_DESCRIPTOR_KHR;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglGetStreamFileDescriptorKHR) {
-        result = cnx->egl.eglGetStreamFileDescriptorKHR(
-                dp->disp.dpy, stream);
-    }
-    return result;
-}
-
-EGLStreamKHR eglCreateStreamFromFileDescriptorKHRImpl(
-        EGLDisplay dpy, EGLNativeFileDescriptorKHR file_descriptor)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_STREAM_KHR;
-
-    EGLStreamKHR result = EGL_NO_STREAM_KHR;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglCreateStreamFromFileDescriptorKHR) {
-        result = cnx->egl.eglCreateStreamFromFileDescriptorKHR(
-                dp->disp.dpy, file_descriptor);
-    }
-    return result;
-}
-
-// ----------------------------------------------------------------------------
-// EGL_EGLEXT_VERSION 15
-// ----------------------------------------------------------------------------
-
-EGLint eglWaitSyncKHRImpl(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags) {
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-    EGLint result = EGL_FALSE;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglWaitSyncKHR) {
-        result = cnx->egl.eglWaitSyncKHR(dp->disp.dpy, sync, flags);
-    }
-    return result;
-}
-
-// ----------------------------------------------------------------------------
-// ANDROID extensions
-// ----------------------------------------------------------------------------
-
-EGLint eglDupNativeFenceFDANDROIDImpl(EGLDisplay dpy, EGLSyncKHR sync)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return EGL_NO_NATIVE_FENCE_FD_ANDROID;
-
-    EGLint result = EGL_NO_NATIVE_FENCE_FD_ANDROID;
-    egl_connection_t* const cnx = &gEGLImpl;
-    if (cnx->dso && cnx->egl.eglDupNativeFenceFDANDROID) {
-        result = cnx->egl.eglDupNativeFenceFDANDROID(dp->disp.dpy, sync);
-    }
-    return result;
-}
-
-EGLBoolean eglPresentationTimeANDROIDImpl(EGLDisplay dpy, EGLSurface surface,
-        EGLnsecsANDROID time)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return EGL_FALSE;
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        setError(EGL_BAD_SURFACE, EGL_FALSE);
-        return EGL_FALSE;
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-    native_window_set_buffers_timestamp(s->getNativeWindow(), time);
-
-    return EGL_TRUE;
-}
-
-EGLClientBuffer eglGetNativeClientBufferANDROIDImpl(const AHardwareBuffer *buffer) {
-    // AHardwareBuffer_to_ANativeWindowBuffer is a platform-only symbol and thus
-    // this function cannot be implemented when this libEGL is built for
-    // vendors.
-#ifndef __ANDROID_VNDK__
-    if (!buffer) return setError(EGL_BAD_PARAMETER, (EGLClientBuffer) nullptr);
-    return const_cast<ANativeWindowBuffer *>(AHardwareBuffer_to_ANativeWindowBuffer(buffer));
-#else
-    return setError(EGL_BAD_PARAMETER, (EGLClientBuffer) nullptr);
-#endif
-}
-
-// ----------------------------------------------------------------------------
-// NVIDIA extensions
-// ----------------------------------------------------------------------------
-EGLuint64NV eglGetSystemTimeFrequencyNVImpl()
-{
-    EGLuint64NV ret = 0;
-    egl_connection_t* const cnx = &gEGLImpl;
-
-    if (cnx->dso && cnx->egl.eglGetSystemTimeFrequencyNV) {
-        return cnx->egl.eglGetSystemTimeFrequencyNV();
-    }
-
-    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
-}
-
-EGLuint64NV eglGetSystemTimeNVImpl()
-{
-    EGLuint64NV ret = 0;
-    egl_connection_t* const cnx = &gEGLImpl;
-
-    if (cnx->dso && cnx->egl.eglGetSystemTimeNV) {
-        return cnx->egl.eglGetSystemTimeNV();
-    }
-
-    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
-}
-
-// ----------------------------------------------------------------------------
-// Partial update extension
-// ----------------------------------------------------------------------------
-EGLBoolean eglSetDamageRegionKHRImpl(EGLDisplay dpy, EGLSurface surface,
-        EGLint *rects, EGLint n_rects)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        setError(EGL_BAD_DISPLAY, EGL_FALSE);
-        return EGL_FALSE;
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        setError(EGL_BAD_SURFACE, EGL_FALSE);
-        return EGL_FALSE;
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglSetDamageRegionKHR) {
-        return s->cnx->egl.eglSetDamageRegionKHR(dp->disp.dpy, s->surface,
-                rects, n_rects);
-    }
-
-    return EGL_FALSE;
-}
-
-EGLBoolean eglGetNextFrameIdANDROIDImpl(EGLDisplay dpy, EGLSurface surface,
-            EGLuint64KHR *frameId) {
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    if (!s->getNativeWindow()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    uint64_t nextFrameId = 0;
-    int ret = native_window_get_next_frame_id(s->getNativeWindow(), &nextFrameId);
-
-    if (ret != 0) {
-        // This should not happen. Return an error that is not in the spec
-        // so it's obvious something is very wrong.
-        ALOGE("eglGetNextFrameId: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
-    }
-
-    *frameId = nextFrameId;
-    return EGL_TRUE;
-}
-
-EGLBoolean eglGetCompositorTimingANDROIDImpl(EGLDisplay dpy, EGLSurface surface,
-        EGLint numTimestamps, const EGLint *names, EGLnsecsANDROID *values)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    if (!s->getNativeWindow()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    nsecs_t* compositeDeadline = nullptr;
-    nsecs_t* compositeInterval = nullptr;
-    nsecs_t* compositeToPresentLatency = nullptr;
-
-    for (int i = 0; i < numTimestamps; i++) {
-        switch (names[i]) {
-            case EGL_COMPOSITE_DEADLINE_ANDROID:
-                compositeDeadline = &values[i];
-                break;
-            case EGL_COMPOSITE_INTERVAL_ANDROID:
-                compositeInterval = &values[i];
-                break;
-            case EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID:
-                compositeToPresentLatency = &values[i];
-                break;
-            default:
-                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
-        }
-    }
-
-    int ret = native_window_get_compositor_timing(s->getNativeWindow(),
-            compositeDeadline, compositeInterval, compositeToPresentLatency);
-
-    switch (ret) {
-      case 0:
-        return EGL_TRUE;
-      case -ENOSYS:
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-      default:
-        // This should not happen. Return an error that is not in the spec
-        // so it's obvious something is very wrong.
-        ALOGE("eglGetCompositorTiming: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
-    }
-}
-
-EGLBoolean eglGetCompositorTimingSupportedANDROIDImpl(
-        EGLDisplay dpy, EGLSurface surface, EGLint name)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    ANativeWindow* window = s->getNativeWindow();
-    if (!window) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    switch (name) {
-        case EGL_COMPOSITE_DEADLINE_ANDROID:
-        case EGL_COMPOSITE_INTERVAL_ANDROID:
-        case EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID:
-            return EGL_TRUE;
-        default:
-            return EGL_FALSE;
-    }
-}
-
-EGLBoolean eglGetFrameTimestampsANDROIDImpl(EGLDisplay dpy, EGLSurface surface,
-        EGLuint64KHR frameId, EGLint numTimestamps, const EGLint *timestamps,
-        EGLnsecsANDROID *values)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    if (!s->getNativeWindow()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    nsecs_t* requestedPresentTime = nullptr;
-    nsecs_t* acquireTime = nullptr;
-    nsecs_t* latchTime = nullptr;
-    nsecs_t* firstRefreshStartTime = nullptr;
-    nsecs_t* gpuCompositionDoneTime = nullptr;
-    nsecs_t* lastRefreshStartTime = nullptr;
-    nsecs_t* displayPresentTime = nullptr;
-    nsecs_t* dequeueReadyTime = nullptr;
-    nsecs_t* releaseTime = nullptr;
-
-    for (int i = 0; i < numTimestamps; i++) {
-        switch (timestamps[i]) {
-            case EGL_REQUESTED_PRESENT_TIME_ANDROID:
-                requestedPresentTime = &values[i];
-                break;
-            case EGL_RENDERING_COMPLETE_TIME_ANDROID:
-                acquireTime = &values[i];
-                break;
-            case EGL_COMPOSITION_LATCH_TIME_ANDROID:
-                latchTime = &values[i];
-                break;
-            case EGL_FIRST_COMPOSITION_START_TIME_ANDROID:
-                firstRefreshStartTime = &values[i];
-                break;
-            case EGL_LAST_COMPOSITION_START_TIME_ANDROID:
-                lastRefreshStartTime = &values[i];
-                break;
-            case EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID:
-                gpuCompositionDoneTime = &values[i];
-                break;
-            case EGL_DISPLAY_PRESENT_TIME_ANDROID:
-                displayPresentTime = &values[i];
-                break;
-            case EGL_DEQUEUE_READY_TIME_ANDROID:
-                dequeueReadyTime = &values[i];
-                break;
-            case EGL_READS_DONE_TIME_ANDROID:
-                releaseTime = &values[i];
-                break;
-            default:
-                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
-        }
-    }
-
-    int ret = native_window_get_frame_timestamps(s->getNativeWindow(), frameId,
-            requestedPresentTime, acquireTime, latchTime, firstRefreshStartTime,
-            lastRefreshStartTime, gpuCompositionDoneTime, displayPresentTime,
-            dequeueReadyTime, releaseTime);
-
-    switch (ret) {
-        case 0:
-            return EGL_TRUE;
-        case -ENOENT:
-            return setError(EGL_BAD_ACCESS, (EGLBoolean)EGL_FALSE);
-        case -ENOSYS:
-            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-        case -EINVAL:
-            return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
-        default:
-            // This should not happen. Return an error that is not in the spec
-            // so it's obvious something is very wrong.
-            ALOGE("eglGetFrameTimestamps: Unexpected error.");
-            return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
-    }
-}
-
-EGLBoolean eglGetFrameTimestampSupportedANDROIDImpl(
-        EGLDisplay dpy, EGLSurface surface, EGLint timestamp)
-{
-    const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) {
-        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
-    }
-
-    SurfaceRef _s(dp.get(), surface);
-    if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    ANativeWindow* window = s->getNativeWindow();
-    if (!window) {
-        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-    }
-
-    switch (timestamp) {
-        case EGL_COMPOSITE_DEADLINE_ANDROID:
-        case EGL_COMPOSITE_INTERVAL_ANDROID:
-        case EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID:
-        case EGL_REQUESTED_PRESENT_TIME_ANDROID:
-        case EGL_RENDERING_COMPLETE_TIME_ANDROID:
-        case EGL_COMPOSITION_LATCH_TIME_ANDROID:
-        case EGL_FIRST_COMPOSITION_START_TIME_ANDROID:
-        case EGL_LAST_COMPOSITION_START_TIME_ANDROID:
-        case EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID:
-        case EGL_DEQUEUE_READY_TIME_ANDROID:
-        case EGL_READS_DONE_TIME_ANDROID:
-            return EGL_TRUE;
-        case EGL_DISPLAY_PRESENT_TIME_ANDROID: {
-            int value = 0;
-            window->query(window,
-                    NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT, &value);
-            return value == 0 ? EGL_FALSE : EGL_TRUE;
-        }
-        default:
-            return EGL_FALSE;
-    }
-}
-
-const GLubyte * glGetStringImpl(GLenum name) {
-    const GLubyte * ret = egl_get_string_for_current_context(name);
-    if (ret == NULL) {
-        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
-        if(_c) ret = _c->glGetString(name);
-    }
-    return ret;
-}
-
-const GLubyte * glGetStringiImpl(GLenum name, GLuint index) {
-    const GLubyte * ret = egl_get_string_for_current_context(name, index);
-    if (ret == NULL) {
-        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
-        if(_c) ret = _c->glGetStringi(name, index);
-    }
-    return ret;
-}
-
-void glGetBooleanvImpl(GLenum pname, GLboolean * data) {
-    if (pname == GL_NUM_EXTENSIONS) {
-        int num_exts = egl_get_num_extensions_for_current_context();
-        if (num_exts >= 0) {
-            *data = num_exts > 0 ? GL_TRUE : GL_FALSE;
-            return;
-        }
-    }
-
-    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
-    if (_c) _c->glGetBooleanv(pname, data);
-}
-
-void glGetFloatvImpl(GLenum pname, GLfloat * data) {
-    if (pname == GL_NUM_EXTENSIONS) {
-        int num_exts = egl_get_num_extensions_for_current_context();
-        if (num_exts >= 0) {
-            *data = (GLfloat)num_exts;
-            return;
-        }
-    }
-
-    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
-    if (_c) _c->glGetFloatv(pname, data);
-}
-
-void glGetIntegervImpl(GLenum pname, GLint * data) {
-    if (pname == GL_NUM_EXTENSIONS) {
-        int num_exts = egl_get_num_extensions_for_current_context();
-        if (num_exts >= 0) {
-            *data = (GLint)num_exts;
-            return;
-        }
-    }
-
-    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
-    if (_c) _c->glGetIntegerv(pname, data);
-}
-
-void glGetInteger64vImpl(GLenum pname, GLint64 * data) {
-    if (pname == GL_NUM_EXTENSIONS) {
-        int num_exts = egl_get_num_extensions_for_current_context();
-        if (num_exts >= 0) {
-            *data = (GLint64)num_exts;
-            return;
-        }
-    }
-
-    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
-    if (_c) _c->glGetInteger64v(pname, data);
-}
-
-struct implementation_map_t {
-    const char* name;
-    EGLFuncPointer address;
-};
-
-static const implementation_map_t sPlatformImplMap[] = {
-    { "eglGetDisplay", (EGLFuncPointer)&eglGetDisplayImpl },
-    { "eglInitialize", (EGLFuncPointer)&eglInitializeImpl },
-    { "eglTerminate", (EGLFuncPointer)&eglTerminateImpl },
-    { "eglGetConfigs", (EGLFuncPointer)&eglGetConfigsImpl },
-    { "eglChooseConfig", (EGLFuncPointer)&eglChooseConfigImpl },
-    { "eglGetConfigAttrib", (EGLFuncPointer)&eglGetConfigAttribImpl },
-    { "eglCreateWindowSurface", (EGLFuncPointer)&eglCreateWindowSurfaceImpl },
-    { "eglCreatePixmapSurface", (EGLFuncPointer)&eglCreatePixmapSurfaceImpl },
-    { "eglCreatePbufferSurface", (EGLFuncPointer)&eglCreatePbufferSurfaceImpl },
-    { "eglDestroySurface", (EGLFuncPointer)&eglDestroySurfaceImpl },
-    { "eglQuerySurface", (EGLFuncPointer)&eglQuerySurfaceImpl },
-    { "eglBeginFrame", (EGLFuncPointer)&eglBeginFrameImpl },
-    { "eglCreateContext", (EGLFuncPointer)&eglCreateContextImpl },
-    { "eglDestroyContext", (EGLFuncPointer)&eglDestroyContextImpl },
-    { "eglMakeCurrent", (EGLFuncPointer)&eglMakeCurrentImpl },
-    { "eglQueryContext", (EGLFuncPointer)&eglQueryContextImpl },
-    { "eglGetCurrentContext", (EGLFuncPointer)&eglGetCurrentContextImpl },
-    { "eglGetCurrentSurface", (EGLFuncPointer)&eglGetCurrentSurfaceImpl },
-    { "eglGetCurrentDisplay", (EGLFuncPointer)&eglGetCurrentDisplayImpl },
-    { "eglWaitGL", (EGLFuncPointer)&eglWaitGLImpl },
-    { "eglWaitNative", (EGLFuncPointer)&eglWaitNativeImpl },
-    { "eglGetError", (EGLFuncPointer)&eglGetErrorImpl },
-    { "eglSwapBuffersWithDamageKHR", (EGLFuncPointer)&eglSwapBuffersWithDamageKHRImpl },
-    { "eglGetProcAddress", (EGLFuncPointer)&eglGetProcAddressImpl },
-    { "eglSwapBuffers", (EGLFuncPointer)&eglSwapBuffersImpl },
-    { "eglCopyBuffers", (EGLFuncPointer)&eglCopyBuffersImpl },
-    { "eglQueryString", (EGLFuncPointer)&eglQueryStringImpl },
-    { "eglQueryStringImplementationANDROID", (EGLFuncPointer)&eglQueryStringImplementationANDROIDImpl },
-    { "eglSurfaceAttrib", (EGLFuncPointer)&eglSurfaceAttribImpl },
-    { "eglBindTexImage", (EGLFuncPointer)&eglBindTexImageImpl },
-    { "eglReleaseTexImage", (EGLFuncPointer)&eglReleaseTexImageImpl },
-    { "eglSwapInterval", (EGLFuncPointer)&eglSwapIntervalImpl },
-    { "eglWaitClient", (EGLFuncPointer)&eglWaitClientImpl },
-    { "eglBindAPI", (EGLFuncPointer)&eglBindAPIImpl },
-    { "eglQueryAPI", (EGLFuncPointer)&eglQueryAPIImpl },
-    { "eglReleaseThread", (EGLFuncPointer)&eglReleaseThreadImpl },
-    { "eglCreatePbufferFromClientBuffer", (EGLFuncPointer)&eglCreatePbufferFromClientBufferImpl },
-    { "eglLockSurfaceKHR", (EGLFuncPointer)&eglLockSurfaceKHRImpl },
-    { "eglUnlockSurfaceKHR", (EGLFuncPointer)&eglUnlockSurfaceKHRImpl },
-    { "eglCreateImageKHR", (EGLFuncPointer)&eglCreateImageKHRImpl },
-    { "eglDestroyImageKHR", (EGLFuncPointer)&eglDestroyImageKHRImpl },
-    { "eglCreateSyncKHR", (EGLFuncPointer)&eglCreateSyncKHRImpl },
-    { "eglDestroySyncKHR", (EGLFuncPointer)&eglDestroySyncKHRImpl },
-    { "eglSignalSyncKHR", (EGLFuncPointer)&eglSignalSyncKHRImpl },
-    { "eglClientWaitSyncKHR", (EGLFuncPointer)&eglClientWaitSyncKHRImpl },
-    { "eglGetSyncAttribKHR", (EGLFuncPointer)&eglGetSyncAttribKHRImpl },
-    { "eglCreateStreamKHR", (EGLFuncPointer)&eglCreateStreamKHRImpl },
-    { "eglDestroyStreamKHR", (EGLFuncPointer)&eglDestroyStreamKHRImpl },
-    { "eglStreamAttribKHR", (EGLFuncPointer)&eglStreamAttribKHRImpl },
-    { "eglQueryStreamKHR", (EGLFuncPointer)&eglQueryStreamKHRImpl },
-    { "eglQueryStreamu64KHR", (EGLFuncPointer)&eglQueryStreamu64KHRImpl },
-    { "eglQueryStreamTimeKHR", (EGLFuncPointer)&eglQueryStreamTimeKHRImpl },
-    { "eglCreateStreamProducerSurfaceKHR", (EGLFuncPointer)&eglCreateStreamProducerSurfaceKHRImpl },
-    { "eglStreamConsumerGLTextureExternalKHR", (EGLFuncPointer)&eglStreamConsumerGLTextureExternalKHRImpl },
-    { "eglStreamConsumerAcquireKHR", (EGLFuncPointer)&eglStreamConsumerAcquireKHRImpl },
-    { "eglStreamConsumerReleaseKHR", (EGLFuncPointer)&eglStreamConsumerReleaseKHRImpl },
-    { "eglGetStreamFileDescriptorKHR", (EGLFuncPointer)&eglGetStreamFileDescriptorKHRImpl },
-    { "eglCreateStreamFromFileDescriptorKHR", (EGLFuncPointer)&eglCreateStreamFromFileDescriptorKHRImpl },
-    { "eglWaitSyncKHR", (EGLFuncPointer)&eglWaitSyncKHRImpl },
-    { "eglDupNativeFenceFDANDROID", (EGLFuncPointer)&eglDupNativeFenceFDANDROIDImpl },
-    { "eglPresentationTimeANDROID", (EGLFuncPointer)&eglPresentationTimeANDROIDImpl },
-    { "eglGetNativeClientBufferANDROID", (EGLFuncPointer)&eglGetNativeClientBufferANDROIDImpl },
-    { "eglGetSystemTimeFrequencyNV", (EGLFuncPointer)&eglGetSystemTimeFrequencyNVImpl },
-    { "eglGetSystemTimeNV", (EGLFuncPointer)&eglGetSystemTimeNVImpl },
-    { "eglSetDamageRegionKHR", (EGLFuncPointer)&eglSetDamageRegionKHRImpl },
-    { "eglGetNextFrameIdANDROID", (EGLFuncPointer)&eglGetNextFrameIdANDROIDImpl },
-    { "eglGetCompositorTimingANDROID", (EGLFuncPointer)&eglGetCompositorTimingANDROIDImpl },
-    { "eglGetCompositorTimingSupportedANDROID", (EGLFuncPointer)&eglGetCompositorTimingSupportedANDROIDImpl },
-    { "eglGetFrameTimestampsANDROID", (EGLFuncPointer)&eglGetFrameTimestampsANDROIDImpl },
-    { "eglGetFrameTimestampSupportedANDROID", (EGLFuncPointer)&eglGetFrameTimestampSupportedANDROIDImpl },
-    { "glGetString", (EGLFuncPointer)&glGetStringImpl },
-    { "glGetStringi", (EGLFuncPointer)&glGetStringiImpl },
-    { "glGetBooleanv", (EGLFuncPointer)&glGetBooleanvImpl },
-    { "glGetFloatv", (EGLFuncPointer)&glGetFloatvImpl },
-    { "glGetIntegerv", (EGLFuncPointer)&glGetIntegervImpl },
-    { "glGetInteger64v", (EGLFuncPointer)&glGetInteger64vImpl },
-};
-
-EGLFuncPointer FindPlatformImplAddr(const char* name)
-{
-    static const bool DEBUG = false;
-
-    if (name == nullptr) {
-        ALOGV("FindPlatformImplAddr called with null name");
-        return nullptr;
-    }
-
-    for (int i = 0; i < NELEM(sPlatformImplMap); i++) {
-        if (sPlatformImplMap[i].name == nullptr) {
-            ALOGV("FindPlatformImplAddr found nullptr for sPlatformImplMap[%i].name (%s)", i, name);
-            return nullptr;
-        }
-        if (!strcmp(name, sPlatformImplMap[i].name)) {
-            ALOGV("FindPlatformImplAddr found %llu for sPlatformImplMap[%i].address (%s)", (unsigned long long)sPlatformImplMap[i].address, i, name);
-            return sPlatformImplMap[i].address;
-        }
-    }
-
-    ALOGV("FindPlatformImplAddr did not find an entry for %s", name);
-    return nullptr;
-}
-} // namespace android
diff --git a/opengl/libs/EGL/egl_platform_entries.h b/opengl/libs/EGL/egl_platform_entries.h
deleted file mode 100644
index 7cd80d6..0000000
--- a/opengl/libs/EGL/egl_platform_entries.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_EGLAPI_H
-#define ANDROID_EGLAPI_H
-
-#include <EGL/egl.h>
-
-typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
-
-namespace android {
-
-EGLFuncPointer FindPlatformImplAddr(const char* name);
-
-}; // namespace android
-
-#endif // ANDROID_EGLAPI_H
-
diff --git a/opengl/libs/EGL/egldefs.h b/opengl/libs/EGL/egldefs.h
index d8606d3..449ffc7 100644
--- a/opengl/libs/EGL/egldefs.h
+++ b/opengl/libs/EGL/egldefs.h
@@ -38,16 +38,12 @@
     };
 
     inline egl_connection_t() : dso(nullptr) { }
-
     void *              dso;
     gl_hooks_t *        hooks[2];
     EGLint              major;
     EGLint              minor;
     egl_t               egl;
 
-    // Functions implemented or redirected by platform libraries
-    platform_impl_t     platform;
-
     void*               libEgl;
     void*               libGles1;
     void*               libGles2;
@@ -68,7 +64,6 @@
 extern char const * const gl_names[];
 extern char const * const gl_names_1[];
 extern char const * const egl_names[];
-extern char const * const platform_names[];
 
 extern egl_connection_t gEGLImpl;
 
diff --git a/opengl/libs/GLES2/gl2.cpp b/opengl/libs/GLES2/gl2.cpp
index 65f50f5..f7fde96 100644
--- a/opengl/libs/GLES2/gl2.cpp
+++ b/opengl/libs/GLES2/gl2.cpp
@@ -301,31 +301,71 @@
 }
 
 const GLubyte * glGetString(GLenum name) {
-    egl_connection_t* const cnx = egl_get_connection();
-    return cnx->platform.glGetString(name);
+    const GLubyte * ret = egl_get_string_for_current_context(name);
+    if (ret == NULL) {
+        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
+        if(_c) ret = _c->glGetString(name);
+    }
+    return ret;
 }
 
 const GLubyte * glGetStringi(GLenum name, GLuint index) {
-    egl_connection_t* const cnx = egl_get_connection();
-    return cnx->platform.glGetStringi(name, index);
+    const GLubyte * ret = egl_get_string_for_current_context(name, index);
+    if (ret == NULL) {
+        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
+        if(_c) ret = _c->glGetStringi(name, index);
+    }
+    return ret;
 }
 
 void glGetBooleanv(GLenum pname, GLboolean * data) {
-    egl_connection_t* const cnx = egl_get_connection();
-    return cnx->platform.glGetBooleanv(pname, data);
+    if (pname == GL_NUM_EXTENSIONS) {
+        int num_exts = egl_get_num_extensions_for_current_context();
+        if (num_exts >= 0) {
+            *data = num_exts > 0 ? GL_TRUE : GL_FALSE;
+            return;
+        }
+    }
+
+    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
+    if (_c) _c->glGetBooleanv(pname, data);
 }
 
 void glGetFloatv(GLenum pname, GLfloat * data) {
-    egl_connection_t* const cnx = egl_get_connection();
-    return cnx->platform.glGetFloatv(pname, data);
+    if (pname == GL_NUM_EXTENSIONS) {
+        int num_exts = egl_get_num_extensions_for_current_context();
+        if (num_exts >= 0) {
+            *data = (GLfloat)num_exts;
+            return;
+        }
+    }
+
+    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
+    if (_c) _c->glGetFloatv(pname, data);
 }
 
 void glGetIntegerv(GLenum pname, GLint * data) {
-    egl_connection_t* const cnx = egl_get_connection();
-    return cnx->platform.glGetIntegerv(pname, data);
+    if (pname == GL_NUM_EXTENSIONS) {
+        int num_exts = egl_get_num_extensions_for_current_context();
+        if (num_exts >= 0) {
+            *data = (GLint)num_exts;
+            return;
+        }
+    }
+
+    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
+    if (_c) _c->glGetIntegerv(pname, data);
 }
 
 void glGetInteger64v(GLenum pname, GLint64 * data) {
-    egl_connection_t* const cnx = egl_get_connection();
-    return cnx->platform.glGetInteger64v(pname, data);
+    if (pname == GL_NUM_EXTENSIONS) {
+        int num_exts = egl_get_num_extensions_for_current_context();
+        if (num_exts >= 0) {
+            *data = (GLint64)num_exts;
+            return;
+        }
+    }
+
+    gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;
+    if (_c) _c->glGetInteger64v(pname, data);
 }
diff --git a/opengl/libs/egl_impl.h b/opengl/libs/egl_impl.h
index 0af0501..a8855ef 100644
--- a/opengl/libs/egl_impl.h
+++ b/opengl/libs/egl_impl.h
@@ -21,18 +21,15 @@
 #include <EGL/eglext.h>
 #include <EGL/eglplatform.h>
 
-#include "EGL/egldefs.h"
 #include "hooks.h"
 
 // ----------------------------------------------------------------------------
 namespace android {
 // ----------------------------------------------------------------------------
 
-
 EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name);
 EGLAPI const GLubyte * egl_get_string_for_current_context(GLenum name, GLuint index);
 EGLAPI GLint egl_get_num_extensions_for_current_context();
-EGLAPI egl_connection_t* egl_get_connection();
 
 // ----------------------------------------------------------------------------
 }; // namespace android
diff --git a/opengl/libs/hooks.h b/opengl/libs/hooks.h
index 63a0e14..81dbe0e 100644
--- a/opengl/libs/hooks.h
+++ b/opengl/libs/hooks.h
@@ -59,10 +59,6 @@
 #define GL_ENTRY(_r, _api, ...) _r (*(_api))(__VA_ARGS__);
 #define EGL_ENTRY(_r, _api, ...) _r (*(_api))(__VA_ARGS__);
 
-struct platform_impl_t {
-    #include "platform_entries.in"
-};
-
 struct egl_t {
     #include "EGL/egl_entries.in"
 };
diff --git a/opengl/libs/platform_entries.in b/opengl/libs/platform_entries.in
deleted file mode 100644
index b28f6cc..0000000
--- a/opengl/libs/platform_entries.in
+++ /dev/null
@@ -1,76 +0,0 @@
-EGL_ENTRY(EGLDisplay, eglGetDisplay, EGLNativeDisplayType)
-EGL_ENTRY(EGLBoolean, eglInitialize, EGLDisplay, EGLint*, EGLint*)
-EGL_ENTRY(EGLBoolean, eglTerminate, EGLDisplay)
-EGL_ENTRY(EGLBoolean, eglGetConfigs, EGLDisplay, EGLConfig*, EGLint, EGLint*)
-EGL_ENTRY(EGLBoolean, eglChooseConfig, EGLDisplay, const EGLint*, EGLConfig*, EGLint, EGLint*)
-EGL_ENTRY(EGLBoolean, eglGetConfigAttrib, EGLDisplay, EGLConfig, EGLint, EGLint*)
-EGL_ENTRY(EGLSurface, eglCreateWindowSurface, EGLDisplay, EGLConfig, NativeWindowType, const EGLint*)
-EGL_ENTRY(EGLSurface, eglCreatePixmapSurface, EGLDisplay, EGLConfig, NativePixmapType, const EGLint*)
-EGL_ENTRY(EGLSurface, eglCreatePbufferSurface, EGLDisplay, EGLConfig, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglDestroySurface, EGLDisplay, EGLSurface)
-EGL_ENTRY(EGLBoolean, eglQuerySurface, EGLDisplay, EGLSurface, EGLint, EGLint*)
-EGL_ENTRY(void, eglBeginFrame, EGLDisplay, EGLSurface)
-EGL_ENTRY(EGLContext, eglCreateContext, EGLDisplay, EGLConfig, EGLContext, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglDestroyContext, EGLDisplay, EGLContext)
-EGL_ENTRY(EGLBoolean, eglMakeCurrent, EGLDisplay, EGLSurface, EGLSurface, EGLContext)
-EGL_ENTRY(EGLBoolean, eglQueryContext, EGLDisplay, EGLContext, EGLint, EGLint*)
-EGL_ENTRY(EGLContext, eglGetCurrentContext, void)
-EGL_ENTRY(EGLSurface, eglGetCurrentSurface, EGLint)
-EGL_ENTRY(EGLDisplay, eglGetCurrentDisplay, void)
-EGL_ENTRY(EGLBoolean, eglWaitGL, void)
-EGL_ENTRY(EGLBoolean, eglWaitNative, EGLint)
-EGL_ENTRY(EGLint, eglGetError, void)
-EGL_ENTRY(__eglMustCastToProperFunctionPointerType, eglGetProcAddress, const char*)
-EGL_ENTRY(EGLBoolean, eglSwapBuffersWithDamageKHR, EGLDisplay, EGLSurface, EGLint*, EGLint)
-EGL_ENTRY(EGLBoolean, eglSwapBuffers, EGLDisplay, EGLSurface)
-EGL_ENTRY(EGLBoolean, eglCopyBuffers, EGLDisplay, EGLSurface, NativePixmapType)
-EGL_ENTRY(const char*, eglQueryString, EGLDisplay, EGLint)
-EGL_ENTRY(const char*, eglQueryStringImplementationANDROID, EGLDisplay, EGLint)
-EGL_ENTRY(EGLBoolean, eglSurfaceAttrib, EGLDisplay, EGLSurface, EGLint, EGLint)
-EGL_ENTRY(EGLBoolean, eglBindTexImage, EGLDisplay, EGLSurface, EGLint)
-EGL_ENTRY(EGLBoolean, eglReleaseTexImage, EGLDisplay, EGLSurface, EGLint)
-EGL_ENTRY(EGLBoolean, eglSwapInterval, EGLDisplay, EGLint)
-EGL_ENTRY(EGLBoolean, eglWaitClient, void)
-EGL_ENTRY(EGLBoolean, eglBindAPI, EGLenum)
-EGL_ENTRY(EGLenum, eglQueryAPI, void)
-EGL_ENTRY(EGLBoolean, eglReleaseThread, void)
-EGL_ENTRY(EGLSurface, eglCreatePbufferFromClientBuffer, EGLDisplay, EGLenum, EGLClientBuffer, EGLConfig, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglLockSurfaceKHR, EGLDisplay, EGLSurface, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglUnlockSurfaceKHR, EGLDisplay, EGLSurface)
-EGL_ENTRY(EGLImageKHR, eglCreateImageKHR, EGLDisplay, EGLContext, EGLenum, EGLClientBuffer, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglDestroyImageKHR, EGLDisplay, EGLImageKHR)
-EGL_ENTRY(EGLSyncKHR, eglCreateSyncKHR, EGLDisplay, EGLenum, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglDestroySyncKHR, EGLDisplay, EGLSyncKHR)
-EGL_ENTRY(EGLBoolean, eglSignalSyncKHR, EGLDisplay, EGLSyncKHR, EGLenum)
-EGL_ENTRY(EGLint, eglClientWaitSyncKHR, EGLDisplay, EGLSyncKHR, EGLint, EGLTimeKHR)
-EGL_ENTRY(EGLBoolean, eglGetSyncAttribKHR, EGLDisplay, EGLSyncKHR, EGLint, EGLint*)
-EGL_ENTRY(EGLStreamKHR, eglCreateStreamKHR, EGLDisplay, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglDestroyStreamKHR, EGLDisplay, EGLStreamKHR)
-EGL_ENTRY(EGLBoolean, eglStreamAttribKHR, EGLDisplay, EGLStreamKHR, EGLenum, EGLint)
-EGL_ENTRY(EGLBoolean, eglQueryStreamKHR, EGLDisplay, EGLStreamKHR, EGLenum, EGLint*)
-EGL_ENTRY(EGLBoolean, eglQueryStreamu64KHR, EGLDisplay, EGLStreamKHR, EGLenum, EGLuint64KHR*)
-EGL_ENTRY(EGLBoolean, eglQueryStreamTimeKHR, EGLDisplay, EGLStreamKHR, EGLenum, EGLTimeKHR*)
-EGL_ENTRY(EGLSurface, eglCreateStreamProducerSurfaceKHR, EGLDisplay, EGLConfig, EGLStreamKHR, const EGLint*)
-EGL_ENTRY(EGLBoolean, eglStreamConsumerGLTextureExternalKHR, EGLDisplay, EGLStreamKHR)
-EGL_ENTRY(EGLBoolean, eglStreamConsumerAcquireKHR, EGLDisplay, EGLStreamKHR)
-EGL_ENTRY(EGLBoolean, eglStreamConsumerReleaseKHR, EGLDisplay, EGLStreamKHR)
-EGL_ENTRY(EGLNativeFileDescriptorKHR, eglGetStreamFileDescriptorKHR, EGLDisplay, EGLStreamKHR)
-EGL_ENTRY(EGLStreamKHR, eglCreateStreamFromFileDescriptorKHR, EGLDisplay, EGLNativeFileDescriptorKHR)
-EGL_ENTRY(EGLint, eglWaitSyncKHR, EGLDisplay, EGLSyncKHR, EGLint)
-EGL_ENTRY(EGLint, eglDupNativeFenceFDANDROID, EGLDisplay, EGLSyncKHR)
-EGL_ENTRY(EGLBoolean, eglPresentationTimeANDROID, EGLDisplay, EGLSurface, EGLnsecsANDROID)
-EGL_ENTRY(EGLClientBuffer, eglGetNativeClientBufferANDROID, const AHardwareBuffer*)
-EGL_ENTRY(EGLuint64NV, eglGetSystemTimeFrequencyNV, void)
-EGL_ENTRY(EGLuint64NV, eglGetSystemTimeNV, void)
-EGL_ENTRY(EGLBoolean, eglSetDamageRegionKHR, EGLDisplay, EGLSurface, EGLint*, EGLint)
-EGL_ENTRY(EGLBoolean, eglGetNextFrameIdANDROID, EGLDisplay, EGLSurface, EGLuint64KHR*)
-EGL_ENTRY(EGLBoolean, eglGetCompositorTimingANDROID, EGLDisplay, EGLSurface, EGLint, const EGLint*, EGLnsecsANDROID*)
-EGL_ENTRY(EGLBoolean, eglGetCompositorTimingSupportedANDROID, EGLDisplay, EGLSurface, EGLint)
-EGL_ENTRY(EGLBoolean, eglGetFrameTimestampsANDROID, EGLDisplay, EGLSurface, EGLuint64KHR, EGLint, const EGLint*, EGLnsecsANDROID*)
-EGL_ENTRY(EGLBoolean, eglGetFrameTimestampSupportedANDROID, EGLDisplay, EGLSurface, EGLint)
-GL_ENTRY(const GLubyte*, glGetString, GLenum)
-GL_ENTRY(const GLubyte*, glGetStringi, GLenum, GLuint)
-GL_ENTRY(void, glGetBooleanv, GLenum, GLboolean*)
-GL_ENTRY(void, glGetFloatv, GLenum, GLfloat*)
-GL_ENTRY(void, glGetIntegerv, GLenum, GLint*)
-GL_ENTRY(void, glGetInteger64v, GLenum, GLint64*)
diff --git a/services/inputflinger/InputReader.cpp b/services/inputflinger/InputReader.cpp
index 57fc17f..0b73be0 100644
--- a/services/inputflinger/InputReader.cpp
+++ b/services/inputflinger/InputReader.cpp
@@ -256,18 +256,17 @@
 
 // --- InputReaderConfiguration ---
 
-bool InputReaderConfiguration::getDisplayViewport(ViewportType viewportType,
-        const std::string& uniqueDisplayId, DisplayViewport* outViewport) const {
+std::optional<DisplayViewport> InputReaderConfiguration::getDisplayViewport(
+        ViewportType viewportType, const std::string& uniqueDisplayId) const {
     for (const DisplayViewport& currentViewport : mDisplays) {
         if (currentViewport.type == viewportType) {
             if (uniqueDisplayId.empty() ||
                     (!uniqueDisplayId.empty() && uniqueDisplayId == currentViewport.uniqueId)) {
-                *outViewport = currentViewport;
-                return true;
+                return std::make_optional(currentViewport);
             }
         }
     }
-    return false;
+    return std::nullopt;
 }
 
 void InputReaderConfiguration::setDisplayViewports(const std::vector<DisplayViewport>& viewports) {
@@ -2249,7 +2248,6 @@
     dump += StringPrintf(INDENT3 "DownTime: %" PRId64 "\n", mDownTime);
 }
 
-
 void KeyboardInputMapper::configure(nsecs_t when,
         const InputReaderConfiguration* config, uint32_t changes) {
     InputMapper::configure(when, config, changes);
@@ -2261,9 +2259,7 @@
 
     if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
         if (mParameters.orientationAware) {
-            DisplayViewport dvp;
-            config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "", &dvp);
-            mViewport = dvp;
+            mViewport = config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "");
         }
     }
 }
@@ -2672,9 +2668,10 @@
     if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
         mOrientation = DISPLAY_ORIENTATION_0;
         if (mParameters.orientationAware && mParameters.hasAssociatedDisplay) {
-            DisplayViewport v;
-            if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "", &v)) {
-                mOrientation = v.orientation;
+            std::optional<DisplayViewport> internalViewport =
+                    config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "");
+            if (internalViewport) {
+                mOrientation = internalViewport->orientation;
             }
         }
         bumpGeneration();
@@ -2987,9 +2984,10 @@
         mRotaryEncoderScrollAccumulator.configure(getDevice());
     }
     if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
-        DisplayViewport v;
-        if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "", &v)) {
-            mOrientation = v.orientation;
+        std::optional<DisplayViewport> internalViewport =
+                config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "");
+        if (internalViewport) {
+            mOrientation = internalViewport->orientation;
         } else {
             mOrientation = DISPLAY_ORIENTATION_0;
         }
@@ -3502,7 +3500,9 @@
             viewportTypeToUse = ViewportType::VIEWPORT_INTERNAL;
         }
 
-        if (!mConfig.getDisplayViewport(viewportTypeToUse, uniqueDisplayId, &newViewport)) {
+        std::optional<DisplayViewport> viewportToUse =
+                mConfig.getDisplayViewport(viewportTypeToUse, uniqueDisplayId);
+        if (!viewportToUse) {
             ALOGI(INDENT "Touch device '%s' could not query the properties of its associated "
                     "display.  The device will be inoperable until the display size "
                     "becomes available.",
@@ -3510,6 +3510,7 @@
             mDeviceMode = DEVICE_MODE_DISABLED;
             return;
         }
+        newViewport = *viewportToUse;
     } else {
         newViewport.setNonDisplayViewport(rawWidth, rawHeight);
     }
diff --git a/services/inputflinger/InputReader.h b/services/inputflinger/InputReader.h
index 74668b7..3410bc9 100644
--- a/services/inputflinger/InputReader.h
+++ b/services/inputflinger/InputReader.h
@@ -202,8 +202,8 @@
             pointerGestureZoomSpeedRatio(0.3f),
             showTouches(false) { }
 
-    bool getDisplayViewport(ViewportType viewportType, const std::string& uniqueDisplayId,
-            DisplayViewport* outViewport) const;
+    std::optional<DisplayViewport> getDisplayViewport(ViewportType viewportType,
+            const std::string& uniqueDisplayId) const;
     void setDisplayViewports(const std::vector<DisplayViewport>& viewports);
 
 
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index 517e639..a1cd71c 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -10,6 +10,7 @@
     cflags: [
         "-Wall",
         "-Werror",
+        "-Wextra",
         "-Wno-unused-parameter",
     ],
     shared_libs: [
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index b70ee09..707f3c5 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -33,7 +33,7 @@
 static const int32_t VIRTUAL_DISPLAY_ID = 1;
 static const int32_t VIRTUAL_DISPLAY_WIDTH = 400;
 static const int32_t VIRTUAL_DISPLAY_HEIGHT = 500;
-static const char* VIRTUAL_DISPLAY_UNIQUE_ID = "Vr-display-unique-ID";
+static const char* VIRTUAL_DISPLAY_UNIQUE_ID = "virtual:1";
 
 // Error tolerance for floating point assertions.
 static const float EPSILON = 0.001f;
@@ -142,21 +142,21 @@
     FakeInputReaderPolicy() {
     }
 
-    void setDisplayViewport(int32_t displayId, int32_t width, int32_t height, int32_t orientation,
-            const std::string& uniqueId) {
+    virtual void clearViewports() {
         mViewports.clear();
-        // Set the size of both the internal and external display at the same time.
-        mViewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId,
-                ViewportType::VIEWPORT_INTERNAL));
-        mViewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId,
-                ViewportType::VIEWPORT_EXTERNAL));
         mConfig.setDisplayViewports(mViewports);
     }
 
-    void setVirtualDisplayViewport(int32_t displayId, int32_t width, int32_t height, int32_t orientation,
+    std::optional<DisplayViewport> getDisplayViewport(ViewportType viewportType,
             const std::string& uniqueId) {
-        mViewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId,
-                ViewportType::VIEWPORT_VIRTUAL));
+        return mConfig.getDisplayViewport(viewportType, uniqueId);
+    }
+
+    void addDisplayViewport(int32_t displayId, int32_t width, int32_t height, int32_t orientation,
+            const std::string& uniqueId, ViewportType viewportType) {
+        const DisplayViewport viewport = createDisplayViewport(displayId, width, height,
+                orientation, uniqueId, viewportType);
+        mViewports.push_back(viewport);
         mConfig.setDisplayViewports(mViewports);
     }
 
@@ -1080,6 +1080,146 @@
     friend class InputReaderTest;
 };
 
+// --- InputReaderPolicyTest ---
+class InputReaderPolicyTest : public testing::Test {
+    protected:
+    sp<FakeInputReaderPolicy> mFakePolicy;
+
+    virtual void SetUp() {
+        mFakePolicy = new FakeInputReaderPolicy();
+    }
+    virtual void TearDown() {
+        mFakePolicy.clear();
+    }
+};
+
+/**
+ * Check that empty set of viewports is an acceptable configuration.
+ * Also try to get internal viewport two different ways - by type and by uniqueId.
+ *
+ * There will be confusion if two viewports with empty uniqueId and identical type are present.
+ * Such configuration is not currently allowed.
+ */
+TEST_F(InputReaderPolicyTest, Viewports_GetCleared) {
+    const std::string uniqueId = "local:0";
+
+    // We didn't add any viewports yet, so there shouldn't be any.
+    std::optional<DisplayViewport> internalViewport =
+            mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, uniqueId);
+    ASSERT_FALSE(internalViewport);
+
+    // Add an internal viewport, then clear it
+    mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, uniqueId, ViewportType::VIEWPORT_INTERNAL);
+
+    // Check matching by uniqueId
+    internalViewport = mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, uniqueId);
+    ASSERT_TRUE(internalViewport);
+
+    // Check matching by viewport type
+    internalViewport = mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "");
+    ASSERT_TRUE(internalViewport);
+
+    mFakePolicy->clearViewports();
+    // Make sure nothing is found after clear
+    internalViewport = mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, uniqueId);
+    ASSERT_FALSE(internalViewport);
+    internalViewport = mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "");
+    ASSERT_FALSE(internalViewport);
+}
+
+TEST_F(InputReaderPolicyTest, Viewports_GetByType) {
+    const std::string internalUniqueId = "local:0";
+    const std::string externalUniqueId = "local:1";
+    const std::string virtualUniqueId1 = "virtual:2";
+    const std::string virtualUniqueId2 = "virtual:3";
+    constexpr int32_t virtualDisplayId1 = 2;
+    constexpr int32_t virtualDisplayId2 = 3;
+
+    // Add an internal viewport
+    mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, internalUniqueId, ViewportType::VIEWPORT_INTERNAL);
+    // Add an external viewport
+    mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, externalUniqueId, ViewportType::VIEWPORT_EXTERNAL);
+    // Add an virtual viewport
+    mFakePolicy->addDisplayViewport(virtualDisplayId1, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, virtualUniqueId1, ViewportType::VIEWPORT_VIRTUAL);
+    // Add another virtual viewport
+    mFakePolicy->addDisplayViewport(virtualDisplayId2, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, virtualUniqueId2, ViewportType::VIEWPORT_VIRTUAL);
+
+    // Check matching by type for internal
+    std::optional<DisplayViewport> internalViewport =
+            mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "");
+    ASSERT_TRUE(internalViewport);
+    ASSERT_EQ(internalUniqueId, internalViewport->uniqueId);
+
+    // Check matching by type for external
+    std::optional<DisplayViewport> externalViewport =
+            mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_EXTERNAL, "");
+    ASSERT_TRUE(externalViewport);
+    ASSERT_EQ(externalUniqueId, externalViewport->uniqueId);
+
+    // Check matching by uniqueId for virtual viewport #1
+    std::optional<DisplayViewport> virtualViewport1 =
+            mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_VIRTUAL, virtualUniqueId1);
+    ASSERT_TRUE(virtualViewport1);
+    ASSERT_EQ(virtualUniqueId1, virtualViewport1->uniqueId);
+    ASSERT_EQ(virtualDisplayId1, virtualViewport1->displayId);
+
+    // Check matching by uniqueId for virtual viewport #2
+    std::optional<DisplayViewport> virtualViewport2 =
+            mFakePolicy->getDisplayViewport(ViewportType::VIEWPORT_VIRTUAL, virtualUniqueId2);
+    ASSERT_TRUE(virtualViewport2);
+    ASSERT_EQ(virtualUniqueId2, virtualViewport2->uniqueId);
+    ASSERT_EQ(virtualDisplayId2, virtualViewport2->displayId);
+}
+
+
+/**
+ * We can have 2 viewports of the same kind. We can distinguish them by uniqueId, and confirm
+ * that lookup works by checking display id.
+ * Check that 2 viewports of each kind is possible, for all existing viewport types.
+ */
+TEST_F(InputReaderPolicyTest, Viewports_TwoOfSameType) {
+    const std::string uniqueId1 = "uniqueId1";
+    const std::string uniqueId2 = "uniqueId2";
+    constexpr int32_t displayId1 = 2;
+    constexpr int32_t displayId2 = 3;
+
+    std::vector<ViewportType> types = {ViewportType::VIEWPORT_INTERNAL,
+            ViewportType::VIEWPORT_EXTERNAL, ViewportType::VIEWPORT_VIRTUAL};
+    for (const ViewportType& type : types) {
+        mFakePolicy->clearViewports();
+        // Add a viewport
+        mFakePolicy->addDisplayViewport(displayId1, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, uniqueId1, type);
+        // Add another viewport
+        mFakePolicy->addDisplayViewport(displayId2, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            DISPLAY_ORIENTATION_0, uniqueId2, type);
+
+        // Check that correct display viewport was returned by comparing the display IDs.
+        std::optional<DisplayViewport> viewport1 = mFakePolicy->getDisplayViewport(type, uniqueId1);
+        ASSERT_TRUE(viewport1);
+        ASSERT_EQ(displayId1, viewport1->displayId);
+        ASSERT_EQ(type, viewport1->type);
+
+        std::optional<DisplayViewport> viewport2 = mFakePolicy->getDisplayViewport(type, uniqueId2);
+        ASSERT_TRUE(viewport2);
+        ASSERT_EQ(displayId2, viewport2->displayId);
+        ASSERT_EQ(type, viewport2->type);
+
+        // When there are multiple viewports of the same kind, and uniqueId is not specified
+        // in the call to getDisplayViewport, then that situation is not supported.
+        // The viewports can be stored in any order, so we cannot rely on the order, since that
+        // is just implementation detail.
+        // However, we can check that it still returns *a* viewport, we just cannot assert
+        // which one specifically is returned.
+        std::optional<DisplayViewport> someViewport = mFakePolicy->getDisplayViewport(type, "");
+        ASSERT_TRUE(someViewport);
+    }
+}
 
 // --- InputReaderTest ---
 
@@ -1603,15 +1743,14 @@
     }
 
     void setDisplayInfoAndReconfigure(int32_t displayId, int32_t width, int32_t height,
-            int32_t orientation) {
-        mFakePolicy->setDisplayViewport(displayId, width, height, orientation, "");
+            int32_t orientation, const std::string& uniqueId, ViewportType viewportType) {
+        mFakePolicy->addDisplayViewport(
+                displayId, width, height, orientation, uniqueId, viewportType);
         configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     }
 
-    void setVirtualDisplayInfoAndReconfigure(int32_t displayId, int32_t width, int32_t height,
-            int32_t orientation, const std::string& uniqueId) {
-        mFakePolicy->setVirtualDisplayViewport(displayId, width, height, orientation, uniqueId);
-        configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    void clearViewports() {
+        mFakePolicy->clearViewports();
     }
 
     static void process(InputMapper* mapper, nsecs_t when, int32_t deviceId, int32_t type,
@@ -1715,12 +1854,24 @@
 
 class KeyboardInputMapperTest : public InputMapperTest {
 protected:
+    const std::string UNIQUE_ID = "local:0";
+
+    void prepareDisplay(int32_t orientation);
+
     void testDPadKeyRotation(KeyboardInputMapper* mapper,
             int32_t originalScanCode, int32_t originalKeyCode, int32_t rotatedKeyCode);
 };
 
+/* Similar to setDisplayInfoAndReconfigure, but pre-populates all parameters except for the
+ * orientation.
+ */
+void KeyboardInputMapperTest::prepareDisplay(int32_t orientation) {
+    setDisplayInfoAndReconfigure(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+            orientation, UNIQUE_ID, ViewportType::VIEWPORT_INTERNAL);
+}
+
 void KeyboardInputMapperTest::testDPadKeyRotation(KeyboardInputMapper* mapper,
-        int32_t originalScanCode, int32_t, int32_t rotatedKeyCode) {
+        int32_t originalScanCode, int32_t originalKeyCode, int32_t rotatedKeyCode) {
     NotifyKeyArgs args;
 
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, originalScanCode, 1);
@@ -1908,9 +2059,7 @@
             AINPUT_SOURCE_KEYBOARD, AINPUT_KEYBOARD_TYPE_ALPHABETIC);
     addMapperAndConfigure(mapper);
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_90);
+    prepareDisplay(DISPLAY_ORIENTATION_90);
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_UP, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_UP));
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
@@ -1932,9 +2081,7 @@
     addConfigurationProperty("keyboard.orientationAware", "1");
     addMapperAndConfigure(mapper);
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_0);
+    prepareDisplay(DISPLAY_ORIENTATION_0);
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_UP, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_UP));
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
@@ -1944,9 +2091,8 @@
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_LEFT, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_LEFT));
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_90);
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_90);
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_UP, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT));
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
@@ -1956,9 +2102,8 @@
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_LEFT, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN));
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_180);
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_180);
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_UP, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_DOWN));
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
@@ -1968,9 +2113,8 @@
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_LEFT, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_RIGHT));
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_270);
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_270);
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
             KEY_UP, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_RIGHT));
     ASSERT_NO_FATAL_FAILURE(testDPadKeyRotation(mapper,
@@ -1983,19 +2127,16 @@
     // Special case: if orientation changes while key is down, we still emit the same keycode
     // in the key up as we did in the key down.
     NotifyKeyArgs args;
-
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_270);
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_270);
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     ASSERT_EQ(AKEY_EVENT_ACTION_DOWN, args.action);
     ASSERT_EQ(KEY_UP, args.scanCode);
     ASSERT_EQ(AKEYCODE_DPAD_RIGHT, args.keyCode);
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_180);
+    clearViewports();
+    prepareDisplay(DISPLAY_ORIENTATION_180);
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     ASSERT_EQ(AKEY_EVENT_ACTION_UP, args.action);
@@ -2020,8 +2161,7 @@
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     ASSERT_EQ(ADISPLAY_ID_NONE, args.displayId);
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+    prepareDisplay(DISPLAY_ORIENTATION_0);
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
@@ -2043,8 +2183,8 @@
     // Display id should be ADISPLAY_ID_NONE without any display configuration.
     // ^--- already checked by the previous test
 
-    setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+    setDisplayInfoAndReconfigure(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0,
+            UNIQUE_ID, ViewportType::VIEWPORT_INTERNAL);
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
@@ -2052,8 +2192,9 @@
     ASSERT_EQ(DISPLAY_ID, args.displayId);
 
     constexpr int32_t newDisplayId = 2;
-    setDisplayInfoAndReconfigure(newDisplayId,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+    clearViewports();
+    setDisplayInfoAndReconfigure(newDisplayId, DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0,
+            UNIQUE_ID, ViewportType::VIEWPORT_INTERNAL);
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
     process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
@@ -2484,9 +2625,12 @@
     addConfigurationProperty("cursor.mode", "navigation");
     addMapperAndConfigure(mapper);
 
+    const std::string uniqueId = "local:0";
+    const ViewportType viewportType = ViewportType::VIEWPORT_INTERNAL;
+
     setDisplayInfoAndReconfigure(DISPLAY_ID,
             DISPLAY_WIDTH, DISPLAY_HEIGHT,
-            DISPLAY_ORIENTATION_90);
+            DISPLAY_ORIENTATION_90, uniqueId, viewportType);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  0,  1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1,  1,  1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  0,  1,  0));
@@ -2503,8 +2647,11 @@
     addConfigurationProperty("cursor.orientationAware", "1");
     addMapperAndConfigure(mapper);
 
+    const std::string uniqueId = "local:0";
+    const ViewportType viewportType = ViewportType::VIEWPORT_INTERNAL;
+
     setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0, uniqueId, viewportType);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  0,  1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1,  1,  1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  0,  1,  0));
@@ -2515,7 +2662,7 @@
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  1, -1,  1));
 
     setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_90);
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_90, uniqueId, viewportType);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  1,  0));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1,  1, -1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  0,  0, -1));
@@ -2526,7 +2673,7 @@
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  1,  1,  1));
 
     setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_180);
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_180, uniqueId, viewportType);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  0, -1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1, -1, -1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  0, -1,  0));
@@ -2537,7 +2684,7 @@
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  1,  1, -1));
 
     setDisplayInfoAndReconfigure(DISPLAY_ID,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_270);
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_270, uniqueId, viewportType);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1, -1,  0));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1, -1,  1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  0,  0,  1));
@@ -2982,6 +3129,8 @@
 
     static const VirtualKeyDefinition VIRTUAL_KEYS[2];
 
+    const std::string UNIQUE_ID = "local:0";
+
     enum Axes {
         POSITION = 1 << 0,
         TOUCH = 1 << 1,
@@ -3050,12 +3199,14 @@
 };
 
 void TouchInputMapperTest::prepareDisplay(int32_t orientation) {
-    setDisplayInfoAndReconfigure(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT, orientation);
+    setDisplayInfoAndReconfigure(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT, orientation,
+            UNIQUE_ID, ViewportType::VIEWPORT_INTERNAL);
 }
 
 void TouchInputMapperTest::prepareVirtualDisplay(int32_t orientation) {
-    setVirtualDisplayInfoAndReconfigure(VIRTUAL_DISPLAY_ID, VIRTUAL_DISPLAY_WIDTH,
-        VIRTUAL_DISPLAY_HEIGHT, orientation, VIRTUAL_DISPLAY_UNIQUE_ID);
+    setDisplayInfoAndReconfigure(VIRTUAL_DISPLAY_ID, VIRTUAL_DISPLAY_WIDTH,
+        VIRTUAL_DISPLAY_HEIGHT, orientation,
+        VIRTUAL_DISPLAY_UNIQUE_ID, ViewportType::VIEWPORT_VIRTUAL);
 }
 
 void TouchInputMapperTest::prepareVirtualKeys() {
@@ -3784,6 +3935,7 @@
     NotifyMotionArgs args;
 
     // Rotation 0.
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_0);
     processDown(mapper, toRawX(50), toRawY(75));
     processSync(mapper);
@@ -3797,6 +3949,7 @@
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled());
 
     // Rotation 90.
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_90);
     processDown(mapper, RAW_X_MAX - toRawX(75) + RAW_X_MIN, toRawY(50));
     processSync(mapper);
@@ -3810,6 +3963,7 @@
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled());
 
     // Rotation 180.
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_180);
     processDown(mapper, RAW_X_MAX - toRawX(50) + RAW_X_MIN, RAW_Y_MAX - toRawY(75) + RAW_Y_MIN);
     processSync(mapper);
@@ -3823,6 +3977,7 @@
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled());
 
     // Rotation 270.
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_270);
     processDown(mapper, toRawX(75), RAW_Y_MAX - toRawY(50) + RAW_Y_MIN);
     processSync(mapper);
diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index a294793..d000d85 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -138,7 +138,7 @@
 
     virtual void setFilteringEnabled(bool enabled) = 0;
 
-    virtual status_t bindTextureImage() const = 0;
+    virtual status_t bindTextureImage() = 0;
     virtual status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
                                     const sp<Fence>& flushFence) = 0;
 
diff --git a/services/surfaceflinger/BufferLayerConsumer.cpp b/services/surfaceflinger/BufferLayerConsumer.cpp
index 8c8915c..6826050 100644
--- a/services/surfaceflinger/BufferLayerConsumer.cpp
+++ b/services/surfaceflinger/BufferLayerConsumer.cpp
@@ -111,12 +111,6 @@
         return NO_INIT;
     }
 
-    // Make sure RenderEngine is current
-    if (!mRE.isCurrent()) {
-        BLC_LOGE("updateTexImage: RenderEngine is not current");
-        return INVALID_OPERATION;
-    }
-
     BufferItem item;
 
     // Acquire the next buffer.
@@ -185,8 +179,7 @@
         return;
     }
 
-    auto buffer = mPendingRelease.isPending ? mPendingRelease.graphicBuffer
-                                            : mCurrentTextureImage->graphicBuffer();
+    auto buffer = mPendingRelease.isPending ? mPendingRelease.graphicBuffer : mCurrentTextureBuffer;
     auto err = addReleaseFence(slot, buffer, fence);
     if (err != OK) {
         BLC_LOGE("setReleaseFence: failed to add the fence: %s (%d)", strerror(-err), err);
@@ -222,10 +215,9 @@
     }
 
     // If item->mGraphicBuffer is not null, this buffer has not been acquired
-    // before, so any prior EglImage created is using a stale buffer. This
-    // replaces any old EglImage with a new one (using the new buffer).
+    // before.
     if (item->mGraphicBuffer != nullptr) {
-        mImages[item->mSlot] = new Image(item->mGraphicBuffer, mRE);
+        mImages[item->mSlot] = nullptr;
     }
 
     return NO_ERROR;
@@ -252,19 +244,18 @@
     }
 
     BLC_LOGV("updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)", mCurrentTexture,
-             mCurrentTextureImage != nullptr ? mCurrentTextureImage->graphicBufferHandle() : 0,
-             slot, mSlots[slot].mGraphicBuffer->handle);
+             mCurrentTextureBuffer != nullptr ? mCurrentTextureBuffer->handle : 0, slot,
+             mSlots[slot].mGraphicBuffer->handle);
 
     // Hang onto the pointer so that it isn't freed in the call to
     // releaseBufferLocked() if we're in shared buffer mode and both buffers are
     // the same.
-    sp<Image> nextTextureImage = mImages[slot];
+    sp<GraphicBuffer> nextTextureBuffer = mSlots[slot].mGraphicBuffer;
 
     // release old buffer
     if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
         if (pendingRelease == nullptr) {
-            status_t status =
-                    releaseBufferLocked(mCurrentTexture, mCurrentTextureImage->graphicBuffer());
+            status_t status = releaseBufferLocked(mCurrentTexture, mCurrentTextureBuffer);
             if (status < NO_ERROR) {
                 BLC_LOGE("updateAndRelease: failed to release buffer: %s (%d)", strerror(-status),
                          status);
@@ -273,14 +264,15 @@
             }
         } else {
             pendingRelease->currentTexture = mCurrentTexture;
-            pendingRelease->graphicBuffer = mCurrentTextureImage->graphicBuffer();
+            pendingRelease->graphicBuffer = mCurrentTextureBuffer;
             pendingRelease->isPending = true;
         }
     }
 
     // Update the BufferLayerConsumer state.
     mCurrentTexture = slot;
-    mCurrentTextureImage = nextTextureImage;
+    mCurrentTextureBuffer = nextTextureBuffer;
+    mCurrentTextureImageFreed = nullptr;
     mCurrentCrop = item.mCrop;
     mCurrentTransform = item.mTransform;
     mCurrentScalingMode = item.mScalingMode;
@@ -301,22 +293,46 @@
 
 status_t BufferLayerConsumer::bindTextureImageLocked() {
     ATRACE_CALL();
+
     mRE.checkErrors();
 
-    if (mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT && mCurrentTextureImage == nullptr) {
+    // It is possible for the current slot's buffer to be freed before a new one
+    // is bound. In that scenario we still want to bind the image.
+    if (mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT && mCurrentTextureBuffer == nullptr) {
         BLC_LOGE("bindTextureImage: no currently-bound texture");
         mRE.bindExternalTextureImage(mTexName, *mRE.createImage());
         return NO_INIT;
     }
 
-    status_t err = mCurrentTextureImage->createIfNeeded();
-    if (err != NO_ERROR) {
-        BLC_LOGW("bindTextureImage: can't create image on slot=%d", mCurrentTexture);
-        mRE.bindExternalTextureImage(mTexName, *mRE.createImage());
-        return UNKNOWN_ERROR;
+    renderengine::Image* imageToRender;
+
+    // mCurrentTextureImageFreed is non-null iff mCurrentTexture ==
+    // BufferQueue::INVALID_BUFFER_SLOT, so we can omit that check.
+    if (mCurrentTextureImageFreed) {
+        imageToRender = mCurrentTextureImageFreed.get();
+    } else if (mImages[mCurrentTexture]) {
+        imageToRender = mImages[mCurrentTexture].get();
+    } else {
+        std::unique_ptr<renderengine::Image> image = mRE.createImage();
+        bool success = image->setNativeWindowBuffer(mCurrentTextureBuffer->getNativeBuffer(),
+                                                    mCurrentTextureBuffer->getUsage() &
+                                                            GRALLOC_USAGE_PROTECTED);
+        if (!success) {
+            BLC_LOGE("bindTextureImage: Failed to create image. size=%ux%u st=%u usage=%#" PRIx64
+                     " fmt=%d",
+                     mCurrentTextureBuffer->getWidth(), mCurrentTextureBuffer->getHeight(),
+                     mCurrentTextureBuffer->getStride(), mCurrentTextureBuffer->getUsage(),
+                     mCurrentTextureBuffer->getPixelFormat());
+            BLC_LOGW("bindTextureImage: can't create image on slot=%d", mCurrentTexture);
+            mRE.bindExternalTextureImage(mTexName, *image);
+            return UNKNOWN_ERROR;
+        }
+        imageToRender = image.get();
+        // Cache the image here so that we can reuse it.
+        mImages[mCurrentTexture] = std::move(image);
     }
 
-    mRE.bindExternalTextureImage(mTexName, mCurrentTextureImage->image());
+    mRE.bindExternalTextureImage(mTexName, *imageToRender);
 
     // Wait for the new buffer to be ready.
     return doFenceWaitLocked();
@@ -333,8 +349,7 @@
                 return UNKNOWN_ERROR;
             }
             status_t err =
-                    addReleaseFenceLocked(mCurrentTexture, mCurrentTextureImage->graphicBuffer(),
-                                          releaseFence);
+                    addReleaseFenceLocked(mCurrentTexture, mCurrentTextureBuffer, releaseFence);
             if (err != OK) {
                 BLC_LOGE("syncForReleaseLocked: error adding release fence: "
                          "%s (%d)",
@@ -361,24 +376,22 @@
     bool needsRecompute = mFilteringEnabled != enabled;
     mFilteringEnabled = enabled;
 
-    if (needsRecompute && mCurrentTextureImage == nullptr) {
-        BLC_LOGD("setFilteringEnabled called with mCurrentTextureImage == nullptr");
+    if (needsRecompute && mCurrentTextureBuffer == nullptr) {
+        BLC_LOGD("setFilteringEnabled called with mCurrentTextureBuffer == nullptr");
     }
 
-    if (needsRecompute && mCurrentTextureImage != nullptr) {
+    if (needsRecompute && mCurrentTextureBuffer != nullptr) {
         computeCurrentTransformMatrixLocked();
     }
 }
 
 void BufferLayerConsumer::computeCurrentTransformMatrixLocked() {
     BLC_LOGV("computeCurrentTransformMatrixLocked");
-    sp<GraphicBuffer> buf =
-            (mCurrentTextureImage == nullptr) ? nullptr : mCurrentTextureImage->graphicBuffer();
-    if (buf == nullptr) {
+    if (mCurrentTextureBuffer == nullptr) {
         BLC_LOGD("computeCurrentTransformMatrixLocked: "
-                 "mCurrentTextureImage is nullptr");
+                 "mCurrentTextureBuffer is nullptr");
     }
-    GLConsumer::computeTransformMatrix(mCurrentTransformMatrix, buf, mCurrentCrop,
+    GLConsumer::computeTransformMatrix(mCurrentTransformMatrix, mCurrentTextureBuffer, mCurrentCrop,
                                        mCurrentTransform, mFilteringEnabled);
 }
 
@@ -427,7 +440,7 @@
         *outSlot = mCurrentTexture;
     }
 
-    return (mCurrentTextureImage == nullptr) ? nullptr : mCurrentTextureImage->graphicBuffer();
+    return mCurrentTextureBuffer;
 }
 
 Rect BufferLayerConsumer::getCurrentCrop() const {
@@ -458,11 +471,6 @@
 }
 
 status_t BufferLayerConsumer::doFenceWaitLocked() const {
-    if (!mRE.isCurrent()) {
-        BLC_LOGE("doFenceWait: RenderEngine is not current");
-        return INVALID_OPERATION;
-    }
-
     if (mCurrentFence->isValid()) {
         if (mRE.useWaitSync()) {
             base::unique_fd fenceFd(mCurrentFence->dup());
@@ -490,8 +498,10 @@
     BLC_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
     if (slotIndex == mCurrentTexture) {
         mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
+        mCurrentTextureImageFreed = std::move(mImages[slotIndex]);
+    } else {
+        mImages[slotIndex] = nullptr;
     }
-    mImages[slotIndex].clear();
     ConsumerBase::freeBufferLocked(slotIndex);
 }
 
@@ -530,7 +540,7 @@
 
 void BufferLayerConsumer::abandonLocked() {
     BLC_LOGV("abandonLocked");
-    mCurrentTextureImage.clear();
+    mCurrentTextureBuffer.clear();
     ConsumerBase::abandonLocked();
 }
 
@@ -548,29 +558,4 @@
     ConsumerBase::dumpLocked(result, prefix);
 }
 
-BufferLayerConsumer::Image::Image(sp<GraphicBuffer> graphicBuffer,
-                                  renderengine::RenderEngine& engine)
-      : mGraphicBuffer(graphicBuffer),
-        mImage{engine.createImage()},
-        mCreated(false),
-        mCropWidth(0),
-        mCropHeight(0) {}
-
-BufferLayerConsumer::Image::~Image() = default;
-
-status_t BufferLayerConsumer::Image::createIfNeeded() {
-    if (mCreated) return OK;
-
-    mCreated = mImage->setNativeWindowBuffer(mGraphicBuffer->getNativeBuffer(),
-                                             mGraphicBuffer->getUsage() & GRALLOC_USAGE_PROTECTED);
-    if (!mCreated) {
-        const sp<GraphicBuffer>& buffer = mGraphicBuffer;
-        ALOGE("Failed to create image. size=%ux%u st=%u usage=%#" PRIx64 " fmt=%d",
-              buffer->getWidth(), buffer->getHeight(), buffer->getStride(), buffer->getUsage(),
-              buffer->getPixelFormat());
-    }
-
-    return mCreated ? OK : UNKNOWN_ERROR;
-}
-
 }; // namespace android
diff --git a/services/surfaceflinger/BufferLayerConsumer.h b/services/surfaceflinger/BufferLayerConsumer.h
index e174680..ea46245 100644
--- a/services/surfaceflinger/BufferLayerConsumer.h
+++ b/services/surfaceflinger/BufferLayerConsumer.h
@@ -185,8 +185,7 @@
     // specific info in addition to the ConsumerBase behavior.
     virtual void dumpLocked(String8& result, const char* prefix) const;
 
-    // acquireBufferLocked overrides the ConsumerBase method to update the
-    // mImages array in addition to the ConsumerBase behavior.
+    // See ConsumerBase::acquireBufferLocked
     virtual status_t acquireBufferLocked(BufferItem* item, nsecs_t presentWhen,
                                          uint64_t maxFrameNumber = 0) override;
 
@@ -210,53 +209,14 @@
                                     PendingRelease* pendingRelease = nullptr,
                                     const sp<Fence>& releaseFence = Fence::NO_FENCE);
 
-    // Binds mTexName and the current buffer to TEXTURE_EXTERNAL target.  Uses
-    // mCurrentTexture if it's set, mCurrentTextureImage if not.  If the
-    // bind succeeds, this calls doFenceWait.
+    // Binds mTexName and the current buffer to TEXTURE_EXTERNAL target.
+    // If the bind succeeds, this calls doFenceWait.
     status_t bindTextureImageLocked();
 
 private:
-    // Image is a utility class for tracking and creating renderengine::Images. There
-    // is primarily just one image per slot, but there is also special cases:
-    //  - After freeBuffer, we must still keep the current image/buffer
-    // Reference counting renderengine::Images lets us handle all these cases easily while
-    // also only creating new renderengine::Images from buffers when required.
-    class Image : public LightRefBase<Image> {
-    public:
-        Image(sp<GraphicBuffer> graphicBuffer, renderengine::RenderEngine& engine);
-
-        Image(const Image& rhs) = delete;
-        Image& operator=(const Image& rhs) = delete;
-
-        // createIfNeeded creates an renderengine::Image if we haven't created one yet.
-        status_t createIfNeeded();
-
-        const sp<GraphicBuffer>& graphicBuffer() { return mGraphicBuffer; }
-        const native_handle* graphicBufferHandle() {
-            return mGraphicBuffer == nullptr ? nullptr : mGraphicBuffer->handle;
-        }
-
-        const renderengine::Image& image() const { return *mImage; }
-
-    private:
-        // Only allow instantiation using ref counting.
-        friend class LightRefBase<Image>;
-        virtual ~Image();
-
-        // mGraphicBuffer is the buffer that was used to create this image.
-        sp<GraphicBuffer> mGraphicBuffer;
-
-        // mImage is the image created from mGraphicBuffer.
-        std::unique_ptr<renderengine::Image> mImage;
-        bool mCreated;
-        int32_t mCropWidth;
-        int32_t mCropHeight;
-    };
-
     // freeBufferLocked frees up the given buffer slot. If the slot has been
     // initialized this will release the reference to the GraphicBuffer in
-    // that slot and destroy the renderengine::Image in that slot.  Otherwise it has no
-    // effect.
+    // that slot.  Otherwise it has no effect.
     //
     // This method must be called with mMutex locked.
     virtual void freeBufferLocked(int slotIndex);
@@ -290,10 +250,10 @@
     // consume buffers as hardware textures.
     static const uint64_t DEFAULT_USAGE_FLAGS = GraphicBuffer::USAGE_HW_TEXTURE;
 
-    // mCurrentTextureImage is the Image/buffer of the current texture. It's
+    // mCurrentTextureImage is the buffer containing the current texture. It's
     // possible that this buffer is not associated with any buffer slot, so we
     // must track it separately in order to support the getCurrentBuffer method.
-    sp<Image> mCurrentTextureImage;
+    sp<GraphicBuffer> mCurrentTextureBuffer;
 
     // mCurrentCrop is the crop rectangle that applies to the current texture.
     // It gets set each time updateTexImage is called.
@@ -363,15 +323,6 @@
 
     wp<ContentsChangedListener> mContentsChangedListener;
 
-    // mImages stores the buffers that have been allocated by the BufferQueue
-    // for each buffer slot.  It is initialized to null pointers, and gets
-    // filled in with the result of BufferQueue::acquire when the
-    // client dequeues a buffer from a
-    // slot that has not yet been used. The buffer allocated to a slot will also
-    // be replaced if the requested buffer usage or geometry differs from that
-    // of the buffer allocated to a slot.
-    sp<Image> mImages[BufferQueueDefs::NUM_BUFFER_SLOTS];
-
     // mCurrentTexture is the buffer slot index of the buffer that is currently
     // bound to the RenderEngine texture. It is initialized to INVALID_BUFFER_SLOT,
     // indicating that no buffer slot is currently bound to the texture. Note,
@@ -380,6 +331,17 @@
     // reset mCurrentTexture to INVALID_BUFFER_SLOT.
     int mCurrentTexture;
 
+    // Cached image used for rendering the current texture through GPU
+    // composition, which contains the cached image after freeBufferLocked is
+    // called on the current buffer. Whenever latchBuffer is called, this is
+    // expected to be cleared. Then, if bindTexImage is called before the next
+    // buffer is acquired, then this image is bound.
+    std::unique_ptr<renderengine::Image> mCurrentTextureImageFreed;
+
+    // Cached images used for rendering the current texture through GPU
+    // composition.
+    std::unique_ptr<renderengine::Image> mImages[BufferQueueDefs::NUM_BUFFER_SLOTS];
+
     // A release that is pending on the receipt of a new release fence from
     // presentDisplay
     PendingRelease mPendingRelease;
diff --git a/services/surfaceflinger/BufferQueueLayer.cpp b/services/surfaceflinger/BufferQueueLayer.cpp
index ab9a2f8..e75fbdf 100644
--- a/services/surfaceflinger/BufferQueueLayer.cpp
+++ b/services/surfaceflinger/BufferQueueLayer.cpp
@@ -216,7 +216,7 @@
     return mConsumer->setFilteringEnabled(enabled);
 }
 
-status_t BufferQueueLayer::bindTextureImage() const {
+status_t BufferQueueLayer::bindTextureImage() {
     return mConsumer->bindTextureImage();
 }
 
@@ -230,10 +230,13 @@
     LayerRejecter r(mDrawingState, getCurrentState(), recomputeVisibleRegions,
                     getProducerStickyTransform() != 0, mName.string(), mOverrideScalingMode,
                     getTransformToDisplayInverse(), mFreezeGeometryUpdates);
+
+    const nsecs_t expectedPresentTime = mFlinger->mUseScheduler
+            ? mFlinger->mScheduler->mPrimaryDispSync->expectedPresentTime()
+            : mFlinger->mPrimaryDispSync->expectedPresentTime();
     status_t updateResult =
-            mConsumer->updateTexImage(&r, mFlinger->mPrimaryDispSync->expectedPresentTime(),
-                                      &mAutoRefresh, &queuedBuffer, mLastFrameNumberReceived,
-                                      releaseFence);
+            mConsumer->updateTexImage(&r, expectedPresentTime, &mAutoRefresh, &queuedBuffer,
+                                      mLastFrameNumberReceived, releaseFence);
     if (updateResult == BufferQueue::PRESENT_LATER) {
         // Producer doesn't want buffer to be displayed yet.  Signal a
         // layer update so we check again at the next opportunity.
diff --git a/services/surfaceflinger/BufferQueueLayer.h b/services/surfaceflinger/BufferQueueLayer.h
index c239a00..abe0bc7 100644
--- a/services/surfaceflinger/BufferQueueLayer.h
+++ b/services/surfaceflinger/BufferQueueLayer.h
@@ -89,7 +89,7 @@
 
     void setFilteringEnabled(bool enabled) override;
 
-    status_t bindTextureImage() const override;
+    status_t bindTextureImage() override;
     status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
                             const sp<Fence>& releaseFence) override;
 
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index c817fb0..e52b35a 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -323,22 +323,14 @@
                                        mCurrentTransform, enabled);
 }
 
-status_t BufferStateLayer::bindTextureImage() const {
+status_t BufferStateLayer::bindTextureImage() {
     const State& s(getDrawingState());
     auto& engine(mFlinger->getRenderEngine());
 
-    if (!engine.isCurrent()) {
-        ALOGE("RenderEngine is not current");
-        return INVALID_OPERATION;
-    }
-
     engine.checkErrors();
 
-    if (!mTextureImage) {
-        ALOGE("no currently-bound texture");
-        engine.bindExternalTextureImage(mTextureName, *engine.createImage());
-        return NO_INIT;
-    }
+    // TODO(marissaw): once buffers are cached, don't create a new image everytime
+    mTextureImage = engine.createImage();
 
     bool created =
             mTextureImage->setNativeWindowBuffer(s.buffer->getNativeBuffer(),
@@ -385,16 +377,6 @@
         return NO_ERROR;
     }
 
-    auto& engine(mFlinger->getRenderEngine());
-    if (!engine.isCurrent()) {
-        ALOGE("RenderEngine is not current");
-        return INVALID_OPERATION;
-    }
-    engine.checkErrors();
-
-    // TODO(marissaw): once buffers are cached, don't create a new image everytime
-    mTextureImage = engine.createImage();
-
     // Reject if the layer is invalid
     uint32_t bufferWidth = s.buffer->width;
     uint32_t bufferHeight = s.buffer->height;
diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
index b134fc5..0c6eaf5 100644
--- a/services/surfaceflinger/BufferStateLayer.h
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -114,7 +114,7 @@
 
     void setFilteringEnabled(bool enabled) override;
 
-    status_t bindTextureImage() const override;
+    status_t bindTextureImage() override;
     status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
                             const sp<Fence>& releaseFence) override;
 
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 54e19c7..18a8bb1 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -20,15 +20,25 @@
 #include <cstdint>
 #include <memory>
 
+#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
+#include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
+#include <android/hardware/configstore/1.2/ISurfaceFlingerConfigs.h>
+#include <configstore/Utils.h>
+
 #include <gui/ISurfaceComposer.h>
+#include <ui/DisplayStatInfo.h>
 
 #include "DispSync.h"
 #include "DispSyncSource.h"
+#include "EventControlThread.h"
 #include "EventThread.h"
 #include "InjectVSyncSource.h"
 
 namespace android {
 
+using namespace android::hardware::configstore;
+using namespace android::hardware::configstore::V1_0;
+
 #define RETURN_VALUE_IF_INVALID(value) \
     if (handle == nullptr || mConnections.count(handle->id) == 0) return value
 #define RETURN_IF_INVALID() \
@@ -36,17 +46,34 @@
 
 std::atomic<int64_t> Scheduler::sNextId = 0;
 
+Scheduler::Scheduler(impl::EventControlThread::SetVSyncEnabledFunction function)
+      : mHasSyncFramework(
+                getBool<ISurfaceFlingerConfigs, &ISurfaceFlingerConfigs::hasSyncFramework>(true)),
+        mDispSyncPresentTimeOffset(
+                getInt64<ISurfaceFlingerConfigs,
+                         &ISurfaceFlingerConfigs::presentTimeOffsetFromVSyncNs>(0)),
+        mPrimaryHWVsyncEnabled(false),
+        mHWVsyncAvailable(false) {
+    // Note: We create a local temporary with the real DispSync implementation
+    // type temporarily so we can initialize it with the configured values,
+    // before storing it for more generic use using the interface type.
+    auto primaryDispSync = std::make_unique<impl::DispSync>("SchedulerDispSync");
+    primaryDispSync->init(mHasSyncFramework, mDispSyncPresentTimeOffset);
+    mPrimaryDispSync = std::move(primaryDispSync);
+    mEventControlThread = std::make_unique<impl::EventControlThread>(function);
+}
+
 Scheduler::~Scheduler() = default;
 
 sp<Scheduler::ConnectionHandle> Scheduler::createConnection(
-        const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
+        const std::string& connectionName, int64_t phaseOffsetNs,
         impl::EventThread::ResyncWithRateLimitCallback resyncCallback,
         impl::EventThread::InterceptVSyncsCallback interceptCallback) {
     const int64_t id = sNextId++;
     ALOGV("Creating a connection handle with ID: %" PRId64 "\n", id);
 
     std::unique_ptr<EventThread> eventThread =
-            makeEventThread(connectionName, dispSync, phaseOffsetNs, resyncCallback,
+            makeEventThread(connectionName, mPrimaryDispSync.get(), phaseOffsetNs, resyncCallback,
                             interceptCallback);
     auto connection = std::make_unique<Connection>(new ConnectionHandle(id),
                                                    eventThread->createEventConnection(),
@@ -108,4 +135,65 @@
     RETURN_IF_INVALID();
     mConnections[handle->id]->thread->setPhaseOffset(phaseOffset);
 }
+
+void Scheduler::getDisplayStatInfo(DisplayStatInfo* stats) {
+    stats->vsyncTime = mPrimaryDispSync->computeNextRefresh(0);
+    stats->vsyncPeriod = mPrimaryDispSync->getPeriod();
+}
+
+void Scheduler::enableHardwareVsync() {
+    std::lock_guard<std::mutex> lock(mHWVsyncLock);
+    if (!mPrimaryHWVsyncEnabled && mHWVsyncAvailable) {
+        mPrimaryDispSync->beginResync();
+        mEventControlThread->setVsyncEnabled(true);
+        mPrimaryHWVsyncEnabled = true;
+    }
+}
+
+void Scheduler::disableHardwareVsync(bool makeUnavailable) {
+    std::lock_guard<std::mutex> lock(mHWVsyncLock);
+    if (mPrimaryHWVsyncEnabled) {
+        mEventControlThread->setVsyncEnabled(false);
+        mPrimaryDispSync->endResync();
+        mPrimaryHWVsyncEnabled = false;
+    }
+    if (makeUnavailable) {
+        mHWVsyncAvailable = false;
+    }
+}
+
+void Scheduler::setVsyncPeriod(const nsecs_t period) {
+    mPrimaryDispSync->reset();
+    mPrimaryDispSync->setPeriod(period);
+    enableHardwareVsync();
+}
+
+void Scheduler::addResyncSample(const nsecs_t timestamp) {
+    bool needsHwVsync = false;
+    { // Scope for the lock
+        std::lock_guard<std::mutex> lock(mHWVsyncLock);
+        if (mPrimaryHWVsyncEnabled) {
+            needsHwVsync = mPrimaryDispSync->addResyncSample(timestamp);
+        }
+    }
+
+    if (needsHwVsync) {
+        enableHardwareVsync();
+    } else {
+        disableHardwareVsync(false);
+    }
+}
+
+void Scheduler::addPresentFence(const std::shared_ptr<FenceTime>& fenceTime) {
+    if (mPrimaryDispSync->addPresentFence(fenceTime)) {
+        enableHardwareVsync();
+    } else {
+        disableHardwareVsync(false);
+    }
+}
+
+void Scheduler::setIgnorePresentFences(bool ignore) {
+    mPrimaryDispSync->setIgnorePresentFences(ignore);
+}
+
 } // namespace android
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index fcb46e6..fdafe58 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -20,22 +20,31 @@
 #include <memory>
 
 #include <gui/ISurfaceComposer.h>
+#include <ui/DisplayStatInfo.h>
 
 #include "DispSync.h"
+#include "EventControlThread.h"
 #include "EventThread.h"
 #include "InjectVSyncSource.h"
 
 namespace android {
 
+class EventControlThread;
+
 class Scheduler {
 public:
+    // Enum to indicate whether to start the transaction early, or at vsync time.
+    enum class TransactionStart { EARLY, NORMAL };
+
     /* The scheduler handle is a BBinder object passed to the client from which we can extract
      * an ID for subsequent operations.
      */
     class ConnectionHandle : public BBinder {
     public:
         ConnectionHandle(int64_t id) : id(id) {}
+
         ~ConnectionHandle() = default;
+
         const int64_t id;
     };
 
@@ -44,6 +53,7 @@
         Connection(sp<ConnectionHandle> handle, sp<BnDisplayEventConnection> eventConnection,
                    std::unique_ptr<EventThread> eventThread)
               : handle(handle), eventConnection(eventConnection), thread(std::move(eventThread)) {}
+
         ~Connection() = default;
 
         sp<ConnectionHandle> handle;
@@ -51,32 +61,48 @@
         const std::unique_ptr<EventThread> thread;
     };
 
-    Scheduler() = default;
+    explicit Scheduler(impl::EventControlThread::SetVSyncEnabledFunction function);
+
     virtual ~Scheduler();
 
     /** Creates an EventThread connection. */
     sp<ConnectionHandle> createConnection(
-            const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
+            const std::string& connectionName, int64_t phaseOffsetNs,
             impl::EventThread::ResyncWithRateLimitCallback resyncCallback,
             impl::EventThread::InterceptVSyncsCallback interceptCallback);
+
     sp<IDisplayEventConnection> createDisplayEventConnection(const sp<ConnectionHandle>& handle);
 
     // Getter methods.
     EventThread* getEventThread(const sp<ConnectionHandle>& handle);
+
     sp<BnDisplayEventConnection> getEventConnection(const sp<ConnectionHandle>& handle);
 
     // Should be called when receiving a hotplug event.
     void hotplugReceived(const sp<ConnectionHandle>& handle, EventThread::DisplayType displayType,
                          bool connected);
+
     // Should be called after the screen is turned on.
     void onScreenAcquired(const sp<ConnectionHandle>& handle);
+
     // Should be called before the screen is turned off.
     void onScreenReleased(const sp<ConnectionHandle>& handle);
+
     // Should be called when dumpsys command is received.
     void dump(const sp<ConnectionHandle>& handle, String8& result) const;
+
     // Offers ability to modify phase offset in the event thread.
     void setPhaseOffset(const sp<ConnectionHandle>& handle, nsecs_t phaseOffset);
 
+    void getDisplayStatInfo(DisplayStatInfo* stats);
+
+    void enableHardwareVsync();
+    void disableHardwareVsync(bool makeUnavailable);
+    void setVsyncPeriod(const nsecs_t period);
+    void addResyncSample(const nsecs_t timestamp);
+    void addPresentFence(const std::shared_ptr<FenceTime>& fenceTime);
+    void setIgnorePresentFences(bool ignore);
+
 protected:
     virtual std::unique_ptr<EventThread> makeEventThread(
             const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
@@ -84,8 +110,29 @@
             impl::EventThread::InterceptVSyncsCallback interceptCallback);
 
 private:
+    // TODO(b/113612090): Instead of letting BufferQueueLayer to access mDispSync directly, it
+    // should make request to Scheduler to compute next refresh.
+    friend class BufferQueueLayer;
+
+    // If fences from sync Framework are supported.
+    const bool mHasSyncFramework;
+
+    // The offset in nanoseconds to use, when DispSync timestamps present fence
+    // signaling time.
+    const nsecs_t mDispSyncPresentTimeOffset;
+
+    // Each connection has it's own ID. This variable keeps track of the count.
     static std::atomic<int64_t> sNextId;
+
+    // Connections are stored in a map <connection ID, connection> for easy retrieval.
     std::unordered_map<int64_t, std::unique_ptr<Connection>> mConnections;
+
+    std::mutex mHWVsyncLock;
+    bool mPrimaryHWVsyncEnabled GUARDED_BY(mHWVsyncLock);
+    bool mHWVsyncAvailable GUARDED_BY(mHWVsyncLock);
+
+    std::unique_ptr<DispSync> mPrimaryDispSync;
+    std::unique_ptr<EventControlThread> mEventControlThread;
 };
 
 } // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/Scheduler/VSyncModulator.h b/services/surfaceflinger/Scheduler/VSyncModulator.h
index ea8ca4c..dde0c57 100644
--- a/services/surfaceflinger/Scheduler/VSyncModulator.h
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.h
@@ -39,8 +39,6 @@
         nsecs_t app;
     };
 
-    enum TransactionStart { EARLY, NORMAL };
-
     // Sets the phase offsets
     //
     // sfEarly: The phase offset when waking up SF early, which happens when marking a transaction
@@ -75,13 +73,14 @@
         mSfConnectionHandle = sfConnectionHandle;
     }
 
-    void setTransactionStart(TransactionStart transactionStart) {
-        if (transactionStart == TransactionStart::EARLY) {
+    void setTransactionStart(Scheduler::TransactionStart transactionStart) {
+        if (transactionStart == Scheduler::TransactionStart::EARLY) {
             mRemainingEarlyFrameCount = MIN_EARLY_FRAME_COUNT;
         }
 
         // An early transaction stays an early transaction.
-        if (transactionStart == mTransactionStart || mTransactionStart == TransactionStart::EARLY) {
+        if (transactionStart == mTransactionStart ||
+            mTransactionStart == Scheduler::TransactionStart::EARLY) {
             return;
         }
         mTransactionStart = transactionStart;
@@ -89,8 +88,8 @@
     }
 
     void onTransactionHandled() {
-        if (mTransactionStart == TransactionStart::NORMAL) return;
-        mTransactionStart = TransactionStart::NORMAL;
+        if (mTransactionStart == Scheduler::TransactionStart::NORMAL) return;
+        mTransactionStart = Scheduler::TransactionStart::NORMAL;
         updateOffsets();
     }
 
@@ -138,7 +137,8 @@
     }
 
     Offsets getOffsets() {
-        if (mTransactionStart == TransactionStart::EARLY || mRemainingEarlyFrameCount > 0) {
+        if (mTransactionStart == Scheduler::TransactionStart::EARLY ||
+            mRemainingEarlyFrameCount > 0) {
             return mEarlyOffsets;
         } else if (mLastFrameUsedRenderEngine) {
             return mEarlyGlOffsets;
@@ -160,7 +160,8 @@
 
     std::atomic<Offsets> mOffsets;
 
-    std::atomic<TransactionStart> mTransactionStart = TransactionStart::NORMAL;
+    std::atomic<Scheduler::TransactionStart> mTransactionStart =
+            Scheduler::TransactionStart::NORMAL;
     std::atomic<bool> mLastFrameUsedRenderEngine = false;
     std::atomic<int> mRemainingEarlyFrameCount = 0;
 };
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 5744266..f0723e8 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -584,15 +584,14 @@
 
     // start the EventThread
     if (mUseScheduler) {
-        mScheduler = std::make_unique<Scheduler>();
+        mScheduler = std::make_unique<Scheduler>(
+                [this](bool enabled) { setVsyncEnabled(HWC_DISPLAY_PRIMARY, enabled); });
         mAppConnectionHandle =
-                mScheduler->createConnection("appConnection", mPrimaryDispSync.get(),
-                                             SurfaceFlinger::vsyncPhaseOffsetNs,
+                mScheduler->createConnection("appConnection", SurfaceFlinger::vsyncPhaseOffsetNs,
                                              [this] { resyncWithRateLimit(); },
                                              impl::EventThread::InterceptVSyncsCallback());
         mSfConnectionHandle =
-                mScheduler->createConnection("sfConnection", mPrimaryDispSync.get(),
-                                             SurfaceFlinger::sfVsyncPhaseOffsetNs,
+                mScheduler->createConnection("sfConnection", SurfaceFlinger::sfVsyncPhaseOffsetNs,
                                              [this] { resyncWithRateLimit(); },
                                              [this](nsecs_t timestamp) {
                                                  mInterceptor->saveVSyncEvent(timestamp);
@@ -912,10 +911,13 @@
         return BAD_VALUE;
     }
 
-    // FIXME for now we always return stats for the primary display
-    memset(stats, 0, sizeof(*stats));
-    stats->vsyncTime = mPrimaryDispSync->computeNextRefresh(0);
-    stats->vsyncPeriod = mPrimaryDispSync->getPeriod();
+    // FIXME for now we always return stats for the primary display.
+    if (mUseScheduler) {
+        mScheduler->getDisplayStatInfo(stats);
+    } else {
+        stats->vsyncTime = mPrimaryDispSync->computeNextRefresh(0);
+        stats->vsyncPeriod = mPrimaryDispSync->getPeriod();
+    }
     return NO_ERROR;
 }
 
@@ -1246,13 +1248,17 @@
     const auto activeConfig = getHwComposer().getActiveConfig(displayId);
     const nsecs_t period = activeConfig->getVsyncPeriod();
 
-    mPrimaryDispSync->reset();
-    mPrimaryDispSync->setPeriod(period);
+    if (mUseScheduler) {
+        mScheduler->setVsyncPeriod(period);
+    } else {
+        mPrimaryDispSync->reset();
+        mPrimaryDispSync->setPeriod(period);
 
-    if (!mPrimaryHWVsyncEnabled) {
-        mPrimaryDispSync->beginResync();
-        mEventControlThread->setVsyncEnabled(true);
-        mPrimaryHWVsyncEnabled = true;
+        if (!mPrimaryHWVsyncEnabled) {
+            mPrimaryDispSync->beginResync();
+            mEventControlThread->setVsyncEnabled(true);
+            mPrimaryHWVsyncEnabled = true;
+        }
     }
 }
 
@@ -1300,19 +1306,22 @@
         return;
     }
 
-    bool needsHwVsync = false;
-
-    { // Scope for the lock
-        Mutex::Autolock _l(mHWVsyncLock);
-        if (mPrimaryHWVsyncEnabled) {
-            needsHwVsync = mPrimaryDispSync->addResyncSample(timestamp);
-        }
-    }
-
-    if (needsHwVsync) {
-        enableHardwareVsync();
+    if (mUseScheduler) {
+        mScheduler->addResyncSample(timestamp);
     } else {
-        disableHardwareVsync(false);
+        bool needsHwVsync = false;
+        { // Scope for the lock
+            Mutex::Autolock _l(mHWVsyncLock);
+            if (mPrimaryHWVsyncEnabled) {
+                needsHwVsync = mPrimaryDispSync->addResyncSample(timestamp);
+            }
+        }
+
+        if (needsHwVsync) {
+            enableHardwareVsync();
+        } else {
+            disableHardwareVsync(false);
+        }
     }
 }
 
@@ -1364,7 +1373,11 @@
 
 // Note: it is assumed the caller holds |mStateLock| when this is called
 void SurfaceFlinger::resetDisplayState() {
-    disableHardwareVsync(true);
+    if (mUseScheduler) {
+        mScheduler->disableHardwareVsync(true);
+    } else {
+        disableHardwareVsync(true);
+    }
     // Clear the drawing state so that the logic inside of
     // handleTransactionLocked will fire. It will determine the delta between
     // mCurrentState and mDrawingState and re-apply all changes when we make the
@@ -1432,12 +1445,17 @@
 
     // The present fences returned from vr_hwc are not an accurate
     // representation of vsync times.
-    mPrimaryDispSync->setIgnorePresentFences(getBE().mHwc->isUsingVrComposer() ||
-                                             !hasSyncFramework);
+    if (mUseScheduler) {
+        mScheduler->setIgnorePresentFences(getBE().mHwc->isUsingVrComposer() || !hasSyncFramework);
+    } else {
+        mPrimaryDispSync->setIgnorePresentFences(getBE().mHwc->isUsingVrComposer() ||
+                                                 !hasSyncFramework);
+    }
 
     // Use phase of 0 since phase is not known.
     // Use latency of 0, which will snap to the ideal latency.
-    setCompositorTimingSnapped(0, period, 0);
+    DisplayStatInfo stats{0 /* vsyncTime */, period /* vsyncPeriod */};
+    setCompositorTimingSnapped(stats, 0);
 
     resyncToHardwareVsync(false);
 
@@ -1736,9 +1754,8 @@
     }
 }
 
-void SurfaceFlinger::updateCompositorTiming(
-        nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime,
-        std::shared_ptr<FenceTime>& presentFenceTime) {
+void SurfaceFlinger::updateCompositorTiming(const DisplayStatInfo& stats, nsecs_t compositeTime,
+                                            std::shared_ptr<FenceTime>& presentFenceTime) {
     // Update queue of past composite+present times and determine the
     // most recently known composite to present latency.
     getBE().mCompositePresentTimes.push({compositeTime, presentFenceTime});
@@ -1760,21 +1777,20 @@
         getBE().mCompositePresentTimes.pop();
     }
 
-    setCompositorTimingSnapped(
-            vsyncPhase, vsyncInterval, compositeToPresentLatency);
+    setCompositorTimingSnapped(stats, compositeToPresentLatency);
 }
 
-void SurfaceFlinger::setCompositorTimingSnapped(nsecs_t vsyncPhase,
-        nsecs_t vsyncInterval, nsecs_t compositeToPresentLatency) {
+void SurfaceFlinger::setCompositorTimingSnapped(const DisplayStatInfo& stats,
+                                                nsecs_t compositeToPresentLatency) {
     // Integer division and modulo round toward 0 not -inf, so we need to
     // treat negative and positive offsets differently.
-    nsecs_t idealLatency = (sfVsyncPhaseOffsetNs > 0) ?
-            (vsyncInterval - (sfVsyncPhaseOffsetNs % vsyncInterval)) :
-            ((-sfVsyncPhaseOffsetNs) % vsyncInterval);
+    nsecs_t idealLatency = (sfVsyncPhaseOffsetNs > 0)
+            ? (stats.vsyncPeriod - (sfVsyncPhaseOffsetNs % stats.vsyncPeriod))
+            : ((-sfVsyncPhaseOffsetNs) % stats.vsyncPeriod);
 
     // Just in case sfVsyncPhaseOffsetNs == -vsyncInterval.
     if (idealLatency <= 0) {
-        idealLatency = vsyncInterval;
+        idealLatency = stats.vsyncPeriod;
     }
 
     // Snap the latency to a value that removes scheduling jitter from the
@@ -1783,15 +1799,14 @@
     // something (such as user input) to an accurate diasplay time.
     // Snapping also allows an app to precisely calculate sfVsyncPhaseOffsetNs
     // with (presentLatency % interval).
-    nsecs_t bias = vsyncInterval / 2;
-    int64_t extraVsyncs =
-            (compositeToPresentLatency - idealLatency + bias) / vsyncInterval;
-    nsecs_t snappedCompositeToPresentLatency = (extraVsyncs > 0) ?
-            idealLatency + (extraVsyncs * vsyncInterval) : idealLatency;
+    nsecs_t bias = stats.vsyncPeriod / 2;
+    int64_t extraVsyncs = (compositeToPresentLatency - idealLatency + bias) / stats.vsyncPeriod;
+    nsecs_t snappedCompositeToPresentLatency =
+            (extraVsyncs > 0) ? idealLatency + (extraVsyncs * stats.vsyncPeriod) : idealLatency;
 
     std::lock_guard<std::mutex> lock(getBE().mCompositorTimingLock);
-    getBE().mCompositorTiming.deadline = vsyncPhase - idealLatency;
-    getBE().mCompositorTiming.interval = vsyncInterval;
+    getBE().mCompositorTiming.deadline = stats.vsyncTime - idealLatency;
+    getBE().mCompositorTiming.interval = stats.vsyncPeriod;
     getBE().mCompositorTiming.presentLatency = snappedCompositeToPresentLatency;
 }
 
@@ -1825,14 +1840,18 @@
     auto presentFenceTime = std::make_shared<FenceTime>(mPreviousPresentFence);
     getBE().mDisplayTimeline.push(presentFenceTime);
 
-    nsecs_t vsyncPhase = mPrimaryDispSync->computeNextRefresh(0);
-    nsecs_t vsyncInterval = mPrimaryDispSync->getPeriod();
+    DisplayStatInfo stats;
+    if (mUseScheduler) {
+        mScheduler->getDisplayStatInfo(&stats);
+    } else {
+        stats.vsyncTime = mPrimaryDispSync->computeNextRefresh(0);
+        stats.vsyncPeriod = mPrimaryDispSync->getPeriod();
+    }
 
     // We use the mRefreshStartTime which might be sampled a little later than
     // when we started doing work for this frame, but that should be okay
     // since updateCompositorTiming has snapping logic.
-    updateCompositorTiming(
-        vsyncPhase, vsyncInterval, mRefreshStartTime, presentFenceTime);
+    updateCompositorTiming(stats, mRefreshStartTime, presentFenceTime);
     CompositorTiming compositorTiming;
     {
         std::lock_guard<std::mutex> lock(getBE().mCompositorTimingLock);
@@ -1849,16 +1868,24 @@
     });
 
     if (presentFenceTime->isValid()) {
-        if (mPrimaryDispSync->addPresentFence(presentFenceTime)) {
-            enableHardwareVsync();
+        if (mUseScheduler) {
+            mScheduler->addPresentFence(presentFenceTime);
         } else {
-            disableHardwareVsync(false);
+            if (mPrimaryDispSync->addPresentFence(presentFenceTime)) {
+                enableHardwareVsync();
+            } else {
+                disableHardwareVsync(false);
+            }
         }
     }
 
     if (!hasSyncFramework) {
         if (display && getHwComposer().isConnected(display->getId()) && display->isPoweredOn()) {
-            enableHardwareVsync();
+            if (mUseScheduler) {
+                mScheduler->enableHardwareVsync();
+            } else {
+                enableHardwareVsync();
+            }
         }
     }
 
@@ -1892,7 +1919,7 @@
         mHasPoweredOff = false;
     } else {
         nsecs_t elapsedTime = currentTime - getBE().mLastSwapTime;
-        size_t numPeriods = static_cast<size_t>(elapsedTime / vsyncInterval);
+        size_t numPeriods = static_cast<size_t>(elapsedTime / stats.vsyncPeriod);
         if (numPeriods < SurfaceFlingerBE::NUM_BUCKETS - 1) {
             getBE().mFrameBuckets[numPeriods] += elapsedTime;
         } else {
@@ -3372,11 +3399,11 @@
 }
 
 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) {
-    return setTransactionFlags(flags, VSyncModulator::TransactionStart::NORMAL);
+    return setTransactionFlags(flags, Scheduler::TransactionStart::NORMAL);
 }
 
 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags,
-        VSyncModulator::TransactionStart transactionStart) {
+                                             Scheduler::TransactionStart transactionStart) {
     uint32_t old = mTransactionFlags.fetch_or(flags);
     mVsyncModulator.setTransactionStart(transactionStart);
     if ((old & flags)==0) { // wake the server up
@@ -3467,9 +3494,8 @@
         }
 
         // this triggers the transaction
-        const auto start = (flags & eEarlyWakeup)
-                ? VSyncModulator::TransactionStart::EARLY
-                : VSyncModulator::TransactionStart::NORMAL;
+        const auto start = (flags & eEarlyWakeup) ? Scheduler::TransactionStart::EARLY
+                                                  : Scheduler::TransactionStart::NORMAL;
         setTransactionFlags(transactionFlags, start);
 
         // if this is a synchronous transaction, wait for it to take effect
@@ -3992,7 +4018,8 @@
 
     // Use phase of 0 since phase is not known.
     // Use latency of 0, which will snap to the ideal latency.
-    setCompositorTimingSnapped(0, period, 0);
+    DisplayStatInfo stats{0 /* vsyncTime */, period /* vsyncPeriod */};
+    setCompositorTimingSnapped(stats, 0);
 }
 
 void SurfaceFlinger::initializeDisplays() {
@@ -4058,8 +4085,11 @@
         }
 
         if (display->isPrimary() && currentMode != HWC_POWER_MODE_DOZE_SUSPEND) {
-            disableHardwareVsync(true); // also cancels any in-progress resync
-
+            if (mUseScheduler) {
+                mScheduler->disableHardwareVsync(true);
+            } else {
+                disableHardwareVsync(true); // also cancels any in-progress resync
+            }
             // FIXME: eventthread only knows about the main display right now
             if (mUseScheduler) {
                 mScheduler->onScreenReleased(mAppConnectionHandle);
@@ -4087,7 +4117,11 @@
     } else if (mode == HWC_POWER_MODE_DOZE_SUSPEND) {
         // Leave display going to doze
         if (display->isPrimary()) {
-            disableHardwareVsync(true); // also cancels any in-progress resync
+            if (mUseScheduler) {
+                mScheduler->disableHardwareVsync(true);
+            } else {
+                disableHardwareVsync(true); // also cancels any in-progress resync
+            }
             // FIXME: eventthread only knows about the main display right now
             if (mUseScheduler) {
                 mScheduler->onScreenReleased(mAppConnectionHandle);
@@ -5034,6 +5068,7 @@
             // Needs to be shifted to proper binder interface when we productize
             case 1016: {
                 n = data.readInt32();
+                // TODO(b/113612090): Evaluate if this can be removed.
                 mPrimaryDispSync->setRefreshSkipCount(n);
                 return NO_ERROR;
             }
@@ -5162,9 +5197,17 @@
                 }
 
                 if ((frequencyScaler.multiplier == 1) && (frequencyScaler.divisor == 1)) {
-                    enableHardwareVsync();
+                    if (mUseScheduler) {
+                        mScheduler->enableHardwareVsync();
+                    } else {
+                        enableHardwareVsync();
+                    }
                 } else {
-                    disableHardwareVsync(true);
+                    if (mUseScheduler) {
+                        mScheduler->disableHardwareVsync(true);
+                    } else {
+                        disableHardwareVsync(true);
+                    }
                 }
                 mPrimaryDispSync->scalePeriod(frequencyScaler);
                 getBE().mHwc->setDisplayFrequencyScaleParameters(frequencyScaler);
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index a0f7c75..f535c4e 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -523,7 +523,7 @@
     uint32_t peekTransactionFlags();
     // Can only be called from the main thread or with mStateLock held
     uint32_t setTransactionFlags(uint32_t flags);
-    uint32_t setTransactionFlags(uint32_t flags, VSyncModulator::TransactionStart transactionStart);
+    uint32_t setTransactionFlags(uint32_t flags, Scheduler::TransactionStart transactionStart);
     void commitTransaction();
     bool containsAnyInvalidClientState(const Vector<ComposerState>& states);
     uint32_t setClientStateLocked(const ComposerState& composerState);
@@ -662,12 +662,10 @@
 
     void preComposition();
     void postComposition();
-    void updateCompositorTiming(
-            nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime,
-            std::shared_ptr<FenceTime>& presentFenceTime);
-    void setCompositorTimingSnapped(
-            nsecs_t vsyncPhase, nsecs_t vsyncInterval,
-            nsecs_t compositeToPresentLatency);
+    void updateCompositorTiming(const DisplayStatInfo& stats, nsecs_t compositeTime,
+                                std::shared_ptr<FenceTime>& presentFenceTime);
+    void setCompositorTimingSnapped(const DisplayStatInfo& stats,
+                                    nsecs_t compositeToPresentLatency);
     void rebuildLayerStacks();
 
     ui::Dataspace getBestDataspace(const sp<const DisplayDevice>& display,
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index 7b79fbd..4e403b7 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -474,10 +474,7 @@
         enqueueBuffer(test, layer);
         Mock::VerifyAndClear(test->mMessageQueue);
 
-        EXPECT_CALL(*test->mRenderEngine, isCurrent()).WillRepeatedly(Return(true));
         EXPECT_CALL(*test->mRenderEngine, useNativeFenceSync()).WillRepeatedly(Return(true));
-        EXPECT_CALL(*test->mRenderEngine, createImage())
-                .WillOnce(Return(ByMove(std::unique_ptr<renderengine::Image>(test->mReImage))));
         bool ignoredRecomputeVisibleRegions;
         layer->latchBuffer(ignoredRecomputeVisibleRegions, 0, Fence::NO_FENCE);
         Mock::VerifyAndClear(test->mRenderEngine);
@@ -574,6 +571,9 @@
                                              LayerProperties::COLOR[2], LayerProperties::COLOR[3])))
                 .Times(1);
 
+        EXPECT_CALL(*test->mRenderEngine, createImage())
+                .WillOnce(Return(ByMove(std::unique_ptr<renderengine::Image>(test->mReImage))));
+        EXPECT_CALL(*test->mReImage, setNativeWindowBuffer(_, _)).WillOnce(Return(true));
         EXPECT_CALL(*test->mRenderEngine, bindExternalTextureImage(DEFAULT_TEXTURE_ID, _)).Times(1);
         EXPECT_CALL(*test->mRenderEngine, setupLayerTexturing(_)).Times(1);
         EXPECT_CALL(*test->mRenderEngine, setSourceDataSpace(ui::Dataspace::UNKNOWN)).Times(1);
@@ -669,6 +669,9 @@
     static constexpr uint32_t LAYER_FLAGS = ISurfaceComposerClient::eSecure;
 
     static void setupInsecureREBufferCompositionCommonCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mRenderEngine, createImage())
+                .WillOnce(Return(ByMove(std::unique_ptr<renderengine::Image>(test->mReImage))));
+        EXPECT_CALL(*test->mReImage, setNativeWindowBuffer(_, _)).WillOnce(Return(true));
         EXPECT_CALL(*test->mRenderEngine, bindExternalTextureImage(DEFAULT_TEXTURE_ID, _)).Times(1);
         EXPECT_CALL(*test->mRenderEngine, setupLayerBlackedOut()).Times(1);
 
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index df0d982..be91a9c 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -6,8 +6,11 @@
 
 #include <log/log.h>
 
+#include <mutex>
+
 #include "AsyncCallRecorder.h"
 #include "Scheduler/DispSync.h"
+#include "Scheduler/EventControlThread.h"
 #include "Scheduler/EventThread.h"
 #include "Scheduler/Scheduler.h"
 #include "mock/MockDispSync.h"
@@ -37,7 +40,7 @@
     class MockScheduler : public android::Scheduler {
     public:
         MockScheduler(std::unique_ptr<EventThread> eventThread)
-              : mEventThread(std::move(eventThread)) {}
+              : Scheduler([](bool) {}), mEventThread(std::move(eventThread)) {}
 
         std::unique_ptr<EventThread> makeEventThread(
                 const std::string& /* connectionName */, DispSync* /* dispSync */,
@@ -81,9 +84,9 @@
     EXPECT_CALL(*mEventThread, createEventConnection())
             .WillRepeatedly(Return(mEventThreadConnection));
 
-    mConnectionHandle = mScheduler->createConnection("appConnection", mPrimaryDispSync, 16,
-                                                     mResyncCallRecorder.getInvocable(),
-                                                     mInterceptVSyncCallRecorder.getInvocable());
+    mConnectionHandle =
+            mScheduler->createConnection("appConnection", 16, mResyncCallRecorder.getInvocable(),
+                                         mInterceptVSyncCallRecorder.getInvocable());
 }
 
 SchedulerTest::~SchedulerTest() {
diff --git a/services/vr/bufferhubd/include/private/dvr/producer_channel.h b/services/vr/bufferhubd/include/private/dvr/producer_channel.h
index b4ea115..18bb7bf 100644
--- a/services/vr/bufferhubd/include/private/dvr/producer_channel.h
+++ b/services/vr/bufferhubd/include/private/dvr/producer_channel.h
@@ -8,8 +8,8 @@
 #include <pdx/channel_handle.h>
 #include <pdx/file_handle.h>
 #include <pdx/rpc/buffer_wrapper.h>
-#include <private/dvr/bufferhub_rpc.h>
 #include <private/dvr/buffer_hub.h>
+#include <private/dvr/bufferhub_rpc.h>
 #include <private/dvr/ion_buffer.h>
 
 namespace android {
@@ -81,10 +81,8 @@
   BufferHubDefs::MetadataHeader* metadata_header_ = nullptr;
   std::atomic<uint64_t>* buffer_state_ = nullptr;
   std::atomic<uint64_t>* fence_state_ = nullptr;
+  std::atomic<uint64_t>* active_clients_bit_mask_ = nullptr;
 
-  // All active consumer bits. Valid bits are the lower 63 bits, while the
-  // highest bit is reserved for the producer and should not be set.
-  uint64_t active_consumer_bit_mask_{0ULL};
   // All orphaned consumer bits. Valid bits are the lower 63 bits, while the
   // highest bit is reserved for the producer and should not be set.
   uint64_t orphaned_consumer_bit_mask_{0ULL};
diff --git a/services/vr/bufferhubd/producer_channel.cpp b/services/vr/bufferhubd/producer_channel.cpp
index e7622ba..581390f 100644
--- a/services/vr/bufferhubd/producer_channel.cpp
+++ b/services/vr/bufferhubd/producer_channel.cpp
@@ -97,6 +97,8 @@
   buffer_state_ =
       new (&metadata_header_->buffer_state) std::atomic<uint64_t>(0);
   fence_state_ = new (&metadata_header_->fence_state) std::atomic<uint64_t>(0);
+  active_clients_bit_mask_ =
+      new (&metadata_header_->active_clients_bit_mask) std::atomic<uint64_t>(0);
 
   acquire_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC));
   release_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC));
@@ -260,8 +262,12 @@
 
   // Try find the next consumer state bit which has not been claimed by any
   // consumer yet.
+  // memory_order_acquire is chosen here because all writes in other threads
+  // that release active_clients_bit_mask_ need to be visible here.
+  uint64_t current_active_clients_bit_mask =
+      active_clients_bit_mask_->load(std::memory_order_acquire);
   uint64_t consumer_state_bit = BufferHubDefs::FindNextClearedBit(
-      active_consumer_bit_mask_ | orphaned_consumer_bit_mask_ |
+      current_active_clients_bit_mask | orphaned_consumer_bit_mask_ |
       BufferHubDefs::kProducerStateBit);
   if (consumer_state_bit == 0ULL) {
     ALOGE(
@@ -270,6 +276,23 @@
     return ErrorStatus(E2BIG);
   }
 
+  uint64_t updated_active_clients_bit_mask =
+      current_active_clients_bit_mask | consumer_state_bit;
+  // Set the updated value only if the current value stays the same as what was
+  // read before. If the comparison succeeds, update the value without
+  // reordering anything before or after this read-modify-write in the current
+  // thread, and the modification will be visible in other threads that acquire
+  // active_clients_bit_mask_. If the comparison fails, load the result of
+  // all writes from all threads to updated_active_clients_bit_mask.
+  if (!active_clients_bit_mask_->compare_exchange_weak(
+          current_active_clients_bit_mask, updated_active_clients_bit_mask,
+          std::memory_order_acq_rel, std::memory_order_acquire)) {
+    ALOGE("Current active clients bit mask is changed to %" PRIu64
+          ", which was expected to be %" PRIu64 ".",
+          updated_active_clients_bit_mask, current_active_clients_bit_mask);
+    return ErrorStatus(EBUSY);
+  }
+
   auto consumer =
       std::make_shared<ConsumerChannel>(service(), buffer_id(), channel_id,
                                         consumer_state_bit, shared_from_this());
@@ -279,6 +302,10 @@
         "ProducerChannel::CreateConsumer: failed to set new consumer channel: "
         "%s",
         channel_status.GetErrorMessage().c_str());
+    // Restore the consumer state bit and make it visible in other threads that
+    // acquire the active_clients_bit_mask_.
+    active_clients_bit_mask_->fetch_and(~consumer_state_bit,
+                                        std::memory_order_release);
     return ErrorStatus(ENOMEM);
   }
 
@@ -289,7 +316,6 @@
       pending_consumers_++;
   }
 
-  active_consumer_bit_mask_ |= consumer_state_bit;
   return {status.take()};
 }
 
@@ -551,7 +577,10 @@
 void ProducerChannel::RemoveConsumer(ConsumerChannel* channel) {
   consumer_channels_.erase(
       std::find(consumer_channels_.begin(), consumer_channels_.end(), channel));
-  active_consumer_bit_mask_ &= ~channel->consumer_state_bit();
+  // Restore the consumer state bit and make it visible in other threads that
+  // acquire the active_clients_bit_mask_.
+  active_clients_bit_mask_->fetch_and(~channel->consumer_state_bit(),
+                                      std::memory_order_release);
 
   const uint64_t buffer_state = buffer_state_->load();
   if (BufferHubDefs::IsBufferPosted(buffer_state) ||