Merge "EGL: Fix repeated extension lookups" into qt-qpr1-dev
diff --git a/opengl/libs/EGL/egl_platform_entries.cpp b/opengl/libs/EGL/egl_platform_entries.cpp
index e996be6..a3bb6de 100644
--- a/opengl/libs/EGL/egl_platform_entries.cpp
+++ b/opengl/libs/EGL/egl_platform_entries.cpp
@@ -61,7 +61,7 @@
using nsecs_t = int64_t;
-struct extention_map_t {
+struct extension_map_t {
const char* name;
__eglMustCastToProperFunctionPointerType address;
};
@@ -154,7 +154,7 @@
* (keep in sync with gExtensionString above)
*
*/
-static const extention_map_t sExtensionMap[] = {
+static const extension_map_t sExtensionMap[] = {
// EGL_KHR_lock_surface
{ "eglLockSurfaceKHR",
(__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR },
@@ -257,13 +257,14 @@
!strcmp((procname), "eglAwakenProcessIMG"))
// accesses protected by sExtensionMapMutex
-static std::unordered_map<std::string, __eglMustCastToProperFunctionPointerType> sGLExtentionMap;
+static std::unordered_map<std::string, __eglMustCastToProperFunctionPointerType> sGLExtensionMap;
+static std::unordered_map<std::string, int> sGLExtensionSlotMap;
-static int sGLExtentionSlot = 0;
+static int sGLExtensionSlot = 0;
static pthread_mutex_t sExtensionMapMutex = PTHREAD_MUTEX_INITIALIZER;
static void(*findProcAddress(const char* name,
- const extention_map_t* map, size_t n))() {
+ const extension_map_t* map, size_t n))() {
for (uint32_t i=0 ; i<n ; i++) {
if (!strcmp(name, map[i].name)) {
return map[i].address;
@@ -1223,7 +1224,7 @@
addr = findBuiltinWrapper(procname);
if (addr) return addr;
- // this protects accesses to sGLExtentionMap and sGLExtentionSlot
+ // this protects accesses to sGLExtensionMap, sGLExtensionSlot, and sGLExtensionSlotMap
pthread_mutex_lock(&sExtensionMapMutex);
/*
@@ -1244,51 +1245,69 @@
*/
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);
-
+ auto& extensionMap = sGLExtensionMap;
+ auto& extensionSlotMap = sGLExtensionSlotMap;
egl_connection_t* const cnx = &gEGLImpl;
LayerLoader& layer_loader(LayerLoader::getInstance());
- if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
+ // See if we've already looked up this extension
+ auto pos = extensionMap.find(name);
+ addr = (pos != extensionMap.end()) ? pos->second : nullptr;
- if (cnx->dso && cnx->egl.eglGetProcAddress) {
+ if (!addr) {
+ // This is the first time we've looked this function up
+ // Ensure we have room to track it
+ const int slot = sGLExtensionSlot;
+ if (slot < MAX_NUMBER_OF_GL_EXTENSIONS) {
- // Extensions are independent of the bound context
- addr = cnx->egl.eglGetProcAddress(procname);
- if (addr) {
+ if (cnx->dso && cnx->egl.eglGetProcAddress) {
- // purposefully track the bottom of the stack in extensionMap
- extentionMap[name] = addr;
+ // Extensions are independent of the bound context
+ addr = cnx->egl.eglGetProcAddress(procname);
+ if (addr) {
- // Apply layers
- addr = layer_loader.ApplyLayers(procname, addr);
+ // purposefully track the bottom of the stack in extensionMap
+ extensionMap[name] = 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++;
+ // Apply layers
+ addr = layer_loader.ApplyLayers(procname, addr);
+
+ // Track the top most entry point return the extension forwarder
+ cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
+ cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] = addr;
+ addr = gExtensionForwarders[slot];
+
+ // Remember the slot for this extension
+ extensionSlotMap[name] = slot;
+
+ // Increment the global extension index
+ sGLExtensionSlot++;
+ }
}
+ } else {
+ // The extension forwarder has a fixed number of slots
+ ALOGE("no more slots for eglGetProcAddress(\"%s\")", procname);
}
- } else if (slot < MAX_NUMBER_OF_GL_EXTENSIONS) {
+ } else {
+ // We tracked an address, so we've seen this func before
+ // Look up the slot for this extension
+ auto slot_pos = extensionSlotMap.find(name);
+ int ext_slot = (slot_pos != extensionSlotMap.end()) ? slot_pos->second : -1;
+ if (ext_slot < 0) {
+ // Something has gone wrong, this should not happen
+ ALOGE("No extension slot found for %s", procname);
+ return nullptr;
+ }
- // We've seen this func before, but we tracked the bottom, so re-apply layers
- // More layers might have been enabled
+ // We tracked the bottom of the stack, so re-apply layers since
+ // 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];
+ // Track the top most entry point and return the extension forwarder
+ cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[ext_slot] =
+ cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[ext_slot] = addr;
+ addr = gExtensionForwarders[ext_slot];
}
pthread_mutex_unlock(&sExtensionMapMutex);