[RenderEngine] Move RenderEngine to libs/renderengine
To do side-by-side comparison between readback buffer from hardware composer
and client target of RenderEngine, we need RenderEngine to be accessible in
VTS, which means RenderEngine should be part of VNDK. This patch moves
RenderEngine out of SurfaceFlinger to libs/renderengine.
BUG: 112585051
Test: build, flash, boot and do some display validation
Change-Id: Ib6b302eaad04c7cc6c5bae39b1d25b38be188d01
diff --git a/libs/renderengine/gl/GLES20RenderEngine.cpp b/libs/renderengine/gl/GLES20RenderEngine.cpp
new file mode 100644
index 0000000..026b151
--- /dev/null
+++ b/libs/renderengine/gl/GLES20RenderEngine.cpp
@@ -0,0 +1,952 @@
+/*
+ * Copyright 2013 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 LOG_NDEBUG 0
+#undef LOG_TAG
+#define LOG_TAG "RenderEngine"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "GLES20RenderEngine.h"
+
+#include <math.h>
+#include <fstream>
+#include <sstream>
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <cutils/compiler.h>
+#include <renderengine/Mesh.h>
+#include <renderengine/Texture.h>
+#include <renderengine/private/Description.h>
+#include <ui/ColorSpace.h>
+#include <ui/DebugUtils.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/Trace.h>
+#include "GLExtensions.h"
+#include "GLFramebuffer.h"
+#include "GLImage.h"
+#include "GLSurface.h"
+#include "Program.h"
+#include "ProgramCache.h"
+
+extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
+
+bool checkGlError(const char* op, int lineNumber) {
+ bool errorFound = false;
+ GLint error = glGetError();
+ while (error != GL_NO_ERROR) {
+ errorFound = true;
+ error = glGetError();
+ ALOGV("after %s() (line # %d) glError (0x%x)\n", op, lineNumber, error);
+ }
+ return errorFound;
+}
+
+static constexpr bool outputDebugPPMs = false;
+
+void writePPM(const char* basename, GLuint width, GLuint height) {
+ ALOGV("writePPM #%s: %d x %d", basename, width, height);
+
+ std::vector<GLubyte> pixels(width * height * 4);
+ std::vector<GLubyte> outBuffer(width * height * 3);
+
+ // TODO(courtneygo): We can now have float formats, need
+ // to remove this code or update to support.
+ // Make returned pixels fit in uint32_t, one byte per component
+ glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
+ if (checkGlError(__FUNCTION__, __LINE__)) {
+ return;
+ }
+
+ std::string filename(basename);
+ filename.append(".ppm");
+ std::ofstream file(filename.c_str(), std::ios::binary);
+ if (!file.is_open()) {
+ ALOGE("Unable to open file: %s", filename.c_str());
+ ALOGE("You may need to do: \"adb shell setenforce 0\" to enable "
+ "surfaceflinger to write debug images");
+ return;
+ }
+
+ file << "P6\n";
+ file << width << "\n";
+ file << height << "\n";
+ file << 255 << "\n";
+
+ auto ptr = reinterpret_cast<char*>(pixels.data());
+ auto outPtr = reinterpret_cast<char*>(outBuffer.data());
+ for (int y = height - 1; y >= 0; y--) {
+ char* data = ptr + y * width * sizeof(uint32_t);
+
+ for (GLuint x = 0; x < width; x++) {
+ // Only copy R, G and B components
+ outPtr[0] = data[0];
+ outPtr[1] = data[1];
+ outPtr[2] = data[2];
+ data += sizeof(uint32_t);
+ outPtr += 3;
+ }
+ }
+ file.write(reinterpret_cast<char*>(outBuffer.data()), outBuffer.size());
+}
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+using ui::Dataspace;
+
+static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs, EGLint attribute,
+ EGLint wanted, EGLConfig* outConfig) {
+ EGLint numConfigs = -1, n = 0;
+ eglGetConfigs(dpy, nullptr, 0, &numConfigs);
+ std::vector<EGLConfig> configs(numConfigs, EGL_NO_CONFIG_KHR);
+ eglChooseConfig(dpy, attrs, configs.data(), configs.size(), &n);
+ configs.resize(n);
+
+ if (!configs.empty()) {
+ if (attribute != EGL_NONE) {
+ for (EGLConfig config : configs) {
+ EGLint value = 0;
+ eglGetConfigAttrib(dpy, config, attribute, &value);
+ if (wanted == value) {
+ *outConfig = config;
+ return NO_ERROR;
+ }
+ }
+ } else {
+ // just pick the first one
+ *outConfig = configs[0];
+ return NO_ERROR;
+ }
+ }
+
+ return NAME_NOT_FOUND;
+}
+
+class EGLAttributeVector {
+ struct Attribute;
+ class Adder;
+ friend class Adder;
+ KeyedVector<Attribute, EGLint> mList;
+ struct Attribute {
+ Attribute() : v(0){};
+ explicit Attribute(EGLint v) : v(v) {}
+ EGLint v;
+ bool operator<(const Attribute& other) const {
+ // this places EGL_NONE at the end
+ EGLint lhs(v);
+ EGLint rhs(other.v);
+ if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
+ if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
+ return lhs < rhs;
+ }
+ };
+ class Adder {
+ friend class EGLAttributeVector;
+ EGLAttributeVector& v;
+ EGLint attribute;
+ Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) {}
+
+ public:
+ void operator=(EGLint value) {
+ if (attribute != EGL_NONE) {
+ v.mList.add(Attribute(attribute), value);
+ }
+ }
+ operator EGLint() const { return v.mList[attribute]; }
+ };
+
+public:
+ EGLAttributeVector() { mList.add(Attribute(EGL_NONE), EGL_NONE); }
+ void remove(EGLint attribute) {
+ if (attribute != EGL_NONE) {
+ mList.removeItem(Attribute(attribute));
+ }
+ }
+ Adder operator[](EGLint attribute) { return Adder(*this, attribute); }
+ EGLint operator[](EGLint attribute) const { return mList[attribute]; }
+ // cast-operator to (EGLint const*)
+ operator EGLint const*() const { return &mList.keyAt(0).v; }
+};
+
+static status_t selectEGLConfig(EGLDisplay display, EGLint format, EGLint renderableType,
+ EGLConfig* config) {
+ // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
+ // it is to be used with WIFI displays
+ status_t err;
+ EGLint wantedAttribute;
+ EGLint wantedAttributeValue;
+
+ EGLAttributeVector attribs;
+ if (renderableType) {
+ attribs[EGL_RENDERABLE_TYPE] = renderableType;
+ attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
+ attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
+ attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
+ attribs[EGL_RED_SIZE] = 8;
+ attribs[EGL_GREEN_SIZE] = 8;
+ attribs[EGL_BLUE_SIZE] = 8;
+ attribs[EGL_ALPHA_SIZE] = 8;
+ wantedAttribute = EGL_NONE;
+ wantedAttributeValue = EGL_NONE;
+ } else {
+ // if no renderable type specified, fallback to a simplified query
+ wantedAttribute = EGL_NATIVE_VISUAL_ID;
+ wantedAttributeValue = format;
+ }
+
+ err = selectConfigForAttribute(display, attribs, wantedAttribute, wantedAttributeValue, config);
+ if (err == NO_ERROR) {
+ EGLint caveat;
+ if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
+ ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
+ }
+
+ return err;
+}
+
+std::unique_ptr<GLES20RenderEngine> GLES20RenderEngine::create(int hwcFormat,
+ uint32_t featureFlags) {
+ // initialize EGL for the default display
+ EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+ if (!eglInitialize(display, nullptr, nullptr)) {
+ LOG_ALWAYS_FATAL("failed to initialize EGL");
+ }
+
+ GLExtensions& extensions = GLExtensions::getInstance();
+ extensions.initWithEGLStrings(eglQueryStringImplementationANDROID(display, EGL_VERSION),
+ eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS));
+
+ // The code assumes that ES2 or later is available if this extension is
+ // supported.
+ EGLConfig config = EGL_NO_CONFIG;
+ if (!extensions.hasNoConfigContext()) {
+ config = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+ }
+
+ EGLint renderableType = 0;
+ if (config == EGL_NO_CONFIG) {
+ renderableType = EGL_OPENGL_ES2_BIT;
+ } else if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
+ LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
+ }
+ EGLint contextClientVersion = 0;
+ if (renderableType & EGL_OPENGL_ES2_BIT) {
+ contextClientVersion = 2;
+ } else if (renderableType & EGL_OPENGL_ES_BIT) {
+ contextClientVersion = 1;
+ } else {
+ LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
+ }
+
+ std::vector<EGLint> contextAttributes;
+ contextAttributes.reserve(6);
+ contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION);
+ contextAttributes.push_back(contextClientVersion);
+ bool useContextPriority = extensions.hasContextPriority() &&
+ (featureFlags & RenderEngine::USE_HIGH_PRIORITY_CONTEXT);
+ if (useContextPriority) {
+ contextAttributes.push_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
+ contextAttributes.push_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
+ }
+ contextAttributes.push_back(EGL_NONE);
+
+ EGLContext ctxt = eglCreateContext(display, config, nullptr, contextAttributes.data());
+
+ // if can't create a GL context, we can only abort.
+ LOG_ALWAYS_FATAL_IF(ctxt == EGL_NO_CONTEXT, "EGLContext creation failed");
+
+ // now figure out what version of GL did we actually get
+ // NOTE: a dummy surface is not needed if KHR_create_context is supported
+
+ EGLConfig dummyConfig = config;
+ if (dummyConfig == EGL_NO_CONFIG) {
+ dummyConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+ }
+ EGLint attribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE};
+ EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, attribs);
+ LOG_ALWAYS_FATAL_IF(dummy == EGL_NO_SURFACE, "can't create dummy pbuffer");
+ EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
+ LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
+
+ extensions.initWithGLStrings(glGetString(GL_VENDOR), glGetString(GL_RENDERER),
+ glGetString(GL_VERSION), glGetString(GL_EXTENSIONS));
+
+ GlesVersion version = parseGlesVersion(extensions.getVersion());
+
+ // initialize the renderer while GL is current
+
+ std::unique_ptr<GLES20RenderEngine> engine;
+ switch (version) {
+ case GLES_VERSION_1_0:
+ case GLES_VERSION_1_1:
+ LOG_ALWAYS_FATAL("SurfaceFlinger requires OpenGL ES 2.0 minimum to run.");
+ break;
+ case GLES_VERSION_2_0:
+ case GLES_VERSION_3_0:
+ engine = std::make_unique<GLES20RenderEngine>(featureFlags);
+ break;
+ }
+ engine->setEGLHandles(display, config, ctxt);
+
+ ALOGI("OpenGL ES informations:");
+ ALOGI("vendor : %s", extensions.getVendor());
+ ALOGI("renderer : %s", extensions.getRenderer());
+ ALOGI("version : %s", extensions.getVersion());
+ ALOGI("extensions: %s", extensions.getExtensions());
+ ALOGI("GL_MAX_TEXTURE_SIZE = %zu", engine->getMaxTextureSize());
+ ALOGI("GL_MAX_VIEWPORT_DIMS = %zu", engine->getMaxViewportDims());
+
+ eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+ eglDestroySurface(display, dummy);
+
+ return engine;
+}
+
+EGLConfig GLES20RenderEngine::chooseEglConfig(EGLDisplay display, int format, bool logConfig) {
+ status_t err;
+ EGLConfig config;
+
+ // First try to get an ES2 config
+ err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
+ if (err != NO_ERROR) {
+ // If ES2 fails, try ES1
+ err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
+ if (err != NO_ERROR) {
+ // still didn't work, probably because we're on the emulator...
+ // try a simplified query
+ ALOGW("no suitable EGLConfig found, trying a simpler query");
+ err = selectEGLConfig(display, format, 0, &config);
+ if (err != NO_ERROR) {
+ // this EGL is too lame for android
+ LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
+ }
+ }
+ }
+
+ if (logConfig) {
+ // print some debugging info
+ EGLint r, g, b, a;
+ eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
+ eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
+ eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
+ eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
+ ALOGI("EGL information:");
+ ALOGI("vendor : %s", eglQueryString(display, EGL_VENDOR));
+ ALOGI("version : %s", eglQueryString(display, EGL_VERSION));
+ ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
+ ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS) ?: "Not Supported");
+ ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
+ }
+
+ return config;
+}
+
+GLES20RenderEngine::GLES20RenderEngine(uint32_t featureFlags)
+ : renderengine::impl::RenderEngine(featureFlags),
+ mEGLDisplay(EGL_NO_DISPLAY),
+ mEGLConfig(nullptr),
+ mEGLContext(EGL_NO_CONTEXT),
+ mVpWidth(0),
+ mVpHeight(0),
+ mUseColorManagement(featureFlags & USE_COLOR_MANAGEMENT) {
+ glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
+ glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
+
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+ glPixelStorei(GL_PACK_ALIGNMENT, 4);
+
+ const uint16_t protTexData[] = {0};
+ glGenTextures(1, &mProtectedTexName);
+ glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
+
+ // mColorBlindnessCorrection = M;
+
+ if (mUseColorManagement) {
+ ColorSpace srgb(ColorSpace::sRGB());
+ ColorSpace displayP3(ColorSpace::DisplayP3());
+ ColorSpace bt2020(ColorSpace::BT2020());
+
+ // Compute sRGB to Display P3 transform matrix.
+ // NOTE: For now, we are limiting output wide color space support to
+ // Display-P3 only.
+ mSrgbToDisplayP3 = mat4(ColorSpaceConnector(srgb, displayP3).getTransform());
+
+ // Compute Display P3 to sRGB transform matrix.
+ mDisplayP3ToSrgb = mat4(ColorSpaceConnector(displayP3, srgb).getTransform());
+
+ // no chromatic adaptation needed since all color spaces use D65 for their white points.
+ mSrgbToXyz = mat4(srgb.getRGBtoXYZ());
+ mDisplayP3ToXyz = mat4(displayP3.getRGBtoXYZ());
+ mBt2020ToXyz = mat4(bt2020.getRGBtoXYZ());
+ mXyzToSrgb = mat4(srgb.getXYZtoRGB());
+ mXyzToDisplayP3 = mat4(displayP3.getXYZtoRGB());
+ mXyzToBt2020 = mat4(bt2020.getXYZtoRGB());
+ }
+}
+
+GLES20RenderEngine::~GLES20RenderEngine() {
+ eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+ eglTerminate(mEGLDisplay);
+}
+
+std::unique_ptr<Framebuffer> GLES20RenderEngine::createFramebuffer() {
+ return std::make_unique<GLFramebuffer>(*this);
+}
+
+std::unique_ptr<Surface> GLES20RenderEngine::createSurface() {
+ return std::make_unique<GLSurface>(*this);
+}
+
+std::unique_ptr<Image> GLES20RenderEngine::createImage() {
+ return std::make_unique<GLImage>(*this);
+}
+
+void GLES20RenderEngine::primeCache() const {
+ ProgramCache::getInstance().primeCache(mFeatureFlags & USE_COLOR_MANAGEMENT);
+}
+
+bool GLES20RenderEngine::isCurrent() const {
+ return mEGLDisplay == eglGetCurrentDisplay() && mEGLContext == eglGetCurrentContext();
+}
+
+bool GLES20RenderEngine::setCurrentSurface(const Surface& surface) {
+ // Surface is an abstract interface. GLES20RenderEngine only ever
+ // creates GLSurface's, so it is safe to just cast to the actual
+ // type.
+ bool success = true;
+ const GLSurface& glSurface = static_cast<const GLSurface&>(surface);
+ EGLSurface eglSurface = glSurface.getEGLSurface();
+ if (eglSurface != eglGetCurrentSurface(EGL_DRAW)) {
+ success = eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext) == EGL_TRUE;
+ if (success && glSurface.getAsync()) {
+ eglSwapInterval(mEGLDisplay, 0);
+ }
+ if (success) {
+ mSurfaceHeight = glSurface.getHeight();
+ }
+ }
+
+ return success;
+}
+
+void GLES20RenderEngine::resetCurrentSurface() {
+ eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+ mSurfaceHeight = 0;
+}
+
+base::unique_fd GLES20RenderEngine::flush() {
+ if (!GLExtensions::getInstance().hasNativeFenceSync()) {
+ return base::unique_fd();
+ }
+
+ EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
+ if (sync == EGL_NO_SYNC_KHR) {
+ ALOGW("failed to create EGL native fence sync: %#x", eglGetError());
+ return base::unique_fd();
+ }
+
+ // native fence fd will not be populated until flush() is done.
+ glFlush();
+
+ // get the fence fd
+ base::unique_fd fenceFd(eglDupNativeFenceFDANDROID(mEGLDisplay, sync));
+ eglDestroySyncKHR(mEGLDisplay, sync);
+ if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+ ALOGW("failed to dup EGL native fence sync: %#x", eglGetError());
+ }
+
+ return fenceFd;
+}
+
+bool GLES20RenderEngine::finish() {
+ if (!GLExtensions::getInstance().hasFenceSync()) {
+ ALOGW("no synchronization support");
+ return false;
+ }
+
+ EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_FENCE_KHR, nullptr);
+ if (sync == EGL_NO_SYNC_KHR) {
+ ALOGW("failed to create EGL fence sync: %#x", eglGetError());
+ return false;
+ }
+
+ EGLint result = eglClientWaitSyncKHR(mEGLDisplay, sync, EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
+ 2000000000 /*2 sec*/);
+ EGLint error = eglGetError();
+ eglDestroySyncKHR(mEGLDisplay, sync);
+ if (result != EGL_CONDITION_SATISFIED_KHR) {
+ if (result == EGL_TIMEOUT_EXPIRED_KHR) {
+ ALOGW("fence wait timed out");
+ } else {
+ ALOGW("error waiting on EGL fence: %#x", error);
+ }
+ return false;
+ }
+
+ return true;
+}
+
+bool GLES20RenderEngine::waitFence(base::unique_fd fenceFd) {
+ if (!GLExtensions::getInstance().hasNativeFenceSync() ||
+ !GLExtensions::getInstance().hasWaitSync()) {
+ return false;
+ }
+
+ EGLint attribs[] = {EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd, EGL_NONE};
+ EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
+ if (sync == EGL_NO_SYNC_KHR) {
+ ALOGE("failed to create EGL native fence sync: %#x", eglGetError());
+ return false;
+ }
+
+ // fenceFd is now owned by EGLSync
+ (void)fenceFd.release();
+
+ // XXX: The spec draft is inconsistent as to whether this should return an
+ // EGLint or void. Ignore the return value for now, as it's not strictly
+ // needed.
+ eglWaitSyncKHR(mEGLDisplay, sync, 0);
+ EGLint error = eglGetError();
+ eglDestroySyncKHR(mEGLDisplay, sync);
+ if (error != EGL_SUCCESS) {
+ ALOGE("failed to wait for EGL native fence sync: %#x", error);
+ return false;
+ }
+
+ return true;
+}
+
+void GLES20RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
+ glClearColor(red, green, blue, alpha);
+ glClear(GL_COLOR_BUFFER_BIT);
+}
+
+void GLES20RenderEngine::fillRegionWithColor(const Region& region, float red, float green,
+ float blue, float alpha) {
+ size_t c;
+ Rect const* r = region.getArray(&c);
+ Mesh mesh(Mesh::TRIANGLES, c * 6, 2);
+ Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
+ for (size_t i = 0; i < c; i++, r++) {
+ position[i * 6 + 0].x = r->left;
+ position[i * 6 + 0].y = r->top;
+ position[i * 6 + 1].x = r->left;
+ position[i * 6 + 1].y = r->bottom;
+ position[i * 6 + 2].x = r->right;
+ position[i * 6 + 2].y = r->bottom;
+ position[i * 6 + 3].x = r->left;
+ position[i * 6 + 3].y = r->top;
+ position[i * 6 + 4].x = r->right;
+ position[i * 6 + 4].y = r->bottom;
+ position[i * 6 + 5].x = r->right;
+ position[i * 6 + 5].y = r->top;
+ }
+ setupFillWithColor(red, green, blue, alpha);
+ drawMesh(mesh);
+}
+
+void GLES20RenderEngine::setScissor(const Rect& region) {
+ // Invert y-coordinate to map to GL-space.
+ int32_t canvasHeight = mRenderToFbo ? mFboHeight : mSurfaceHeight;
+ int32_t glBottom = canvasHeight - region.bottom;
+
+ glScissor(region.left, glBottom, region.getWidth(), region.getHeight());
+ glEnable(GL_SCISSOR_TEST);
+}
+
+void GLES20RenderEngine::disableScissor() {
+ glDisable(GL_SCISSOR_TEST);
+}
+
+void GLES20RenderEngine::genTextures(size_t count, uint32_t* names) {
+ glGenTextures(count, names);
+}
+
+void GLES20RenderEngine::deleteTextures(size_t count, uint32_t const* names) {
+ glDeleteTextures(count, names);
+}
+
+void GLES20RenderEngine::bindExternalTextureImage(uint32_t texName, const Image& image) {
+ const GLImage& glImage = static_cast<const GLImage&>(image);
+ const GLenum target = GL_TEXTURE_EXTERNAL_OES;
+
+ glBindTexture(target, texName);
+ if (glImage.getEGLImage() != EGL_NO_IMAGE_KHR) {
+ glEGLImageTargetTexture2DOES(target, static_cast<GLeglImageOES>(glImage.getEGLImage()));
+ }
+}
+
+status_t GLES20RenderEngine::bindFrameBuffer(Framebuffer* framebuffer) {
+ GLFramebuffer* glFramebuffer = static_cast<GLFramebuffer*>(framebuffer);
+ EGLImageKHR eglImage = glFramebuffer->getEGLImage();
+ uint32_t textureName = glFramebuffer->getTextureName();
+ uint32_t framebufferName = glFramebuffer->getFramebufferName();
+
+ // Bind the texture and turn our EGLImage into a texture
+ glBindTexture(GL_TEXTURE_2D, textureName);
+ glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)eglImage);
+
+ // Bind the Framebuffer to render into
+ glBindFramebuffer(GL_FRAMEBUFFER, framebufferName);
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textureName, 0);
+
+ mRenderToFbo = true;
+ mFboHeight = glFramebuffer->getBufferHeight();
+
+ uint32_t glStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+
+ ALOGE_IF(glStatus != GL_FRAMEBUFFER_COMPLETE_OES, "glCheckFramebufferStatusOES error %d",
+ glStatus);
+
+ return glStatus == GL_FRAMEBUFFER_COMPLETE_OES ? NO_ERROR : BAD_VALUE;
+}
+
+void GLES20RenderEngine::unbindFrameBuffer(Framebuffer* /* framebuffer */) {
+ mRenderToFbo = false;
+ mFboHeight = 0;
+
+ // back to main framebuffer
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ // Workaround for b/77935566 to force the EGL driver to release the
+ // screenshot buffer
+ setScissor(Rect::EMPTY_RECT);
+ clearWithColor(0.0, 0.0, 0.0, 0.0);
+ disableScissor();
+}
+
+void GLES20RenderEngine::checkErrors() const {
+ do {
+ // there could be more than one error flag
+ GLenum error = glGetError();
+ if (error == GL_NO_ERROR) break;
+ ALOGE("GL error 0x%04x", int(error));
+ } while (true);
+}
+
+status_t GLES20RenderEngine::drawLayers(const DisplaySettings& /*settings*/,
+ const std::vector<LayerSettings>& /*layers*/,
+ ANativeWindowBuffer* const /*buffer*/,
+ base::unique_fd* /*displayFence*/) const {
+ return NO_ERROR;
+}
+
+void GLES20RenderEngine::setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
+ ui::Transform::orientation_flags rotation) {
+ int32_t l = sourceCrop.left;
+ int32_t r = sourceCrop.right;
+ int32_t b = sourceCrop.bottom;
+ int32_t t = sourceCrop.top;
+ if (mRenderToFbo) {
+ std::swap(t, b);
+ }
+ mat4 m = mat4::ortho(l, r, b, t, 0, 1);
+
+ // Apply custom rotation to the projection.
+ float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f;
+ switch (rotation) {
+ case ui::Transform::ROT_0:
+ break;
+ case ui::Transform::ROT_90:
+ m = mat4::rotate(rot90InRadians, vec3(0, 0, 1)) * m;
+ break;
+ case ui::Transform::ROT_180:
+ m = mat4::rotate(rot90InRadians * 2.0f, vec3(0, 0, 1)) * m;
+ break;
+ case ui::Transform::ROT_270:
+ m = mat4::rotate(rot90InRadians * 3.0f, vec3(0, 0, 1)) * m;
+ break;
+ default:
+ break;
+ }
+
+ glViewport(0, 0, vpw, vph);
+ mState.projectionMatrix = m;
+ mVpWidth = vpw;
+ mVpHeight = vph;
+}
+
+void GLES20RenderEngine::setupLayerBlending(bool premultipliedAlpha, bool opaque,
+ bool disableTexture, const half4& color) {
+ mState.isPremultipliedAlpha = premultipliedAlpha;
+ mState.isOpaque = opaque;
+ mState.color = color;
+
+ if (disableTexture) {
+ mState.textureEnabled = false;
+ }
+
+ if (color.a < 1.0f || !opaque) {
+ glEnable(GL_BLEND);
+ glBlendFunc(premultipliedAlpha ? GL_ONE : GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ } else {
+ glDisable(GL_BLEND);
+ }
+}
+
+void GLES20RenderEngine::setSourceY410BT2020(bool enable) {
+ mState.isY410BT2020 = enable;
+}
+
+void GLES20RenderEngine::setSourceDataSpace(Dataspace source) {
+ mDataSpace = source;
+}
+
+void GLES20RenderEngine::setOutputDataSpace(Dataspace dataspace) {
+ mOutputDataSpace = dataspace;
+}
+
+void GLES20RenderEngine::setDisplayMaxLuminance(const float maxLuminance) {
+ mState.displayMaxLuminance = maxLuminance;
+}
+
+void GLES20RenderEngine::setupLayerTexturing(const Texture& texture) {
+ GLuint target = texture.getTextureTarget();
+ glBindTexture(target, texture.getTextureName());
+ GLenum filter = GL_NEAREST;
+ if (texture.getFiltering()) {
+ filter = GL_LINEAR;
+ }
+ glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ glTexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
+ glTexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
+
+ mState.texture = texture;
+ mState.textureEnabled = true;
+}
+
+void GLES20RenderEngine::setupLayerBlackedOut() {
+ glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
+ Texture texture(Texture::TEXTURE_2D, mProtectedTexName);
+ texture.setDimensions(1, 1); // FIXME: we should get that from somewhere
+ mState.texture = texture;
+ mState.textureEnabled = true;
+}
+
+void GLES20RenderEngine::setColorTransform(const mat4& colorTransform) {
+ mState.colorMatrix = colorTransform;
+}
+
+void GLES20RenderEngine::disableTexturing() {
+ mState.textureEnabled = false;
+}
+
+void GLES20RenderEngine::disableBlending() {
+ glDisable(GL_BLEND);
+}
+
+void GLES20RenderEngine::setupFillWithColor(float r, float g, float b, float a) {
+ mState.isPremultipliedAlpha = true;
+ mState.isOpaque = false;
+ mState.color = half4(r, g, b, a);
+ mState.textureEnabled = false;
+ glDisable(GL_BLEND);
+}
+
+void GLES20RenderEngine::drawMesh(const Mesh& mesh) {
+ ATRACE_CALL();
+ if (mesh.getTexCoordsSize()) {
+ glEnableVertexAttribArray(Program::texCoords);
+ glVertexAttribPointer(Program::texCoords, mesh.getTexCoordsSize(), GL_FLOAT, GL_FALSE,
+ mesh.getByteStride(), mesh.getTexCoords());
+ }
+
+ glVertexAttribPointer(Program::position, mesh.getVertexSize(), GL_FLOAT, GL_FALSE,
+ mesh.getByteStride(), mesh.getPositions());
+
+ // By default, DISPLAY_P3 is the only supported wide color output. However,
+ // when HDR content is present, hardware composer may be able to handle
+ // BT2020 data space, in that case, the output data space is set to be
+ // BT2020_HLG or BT2020_PQ respectively. In GPU fall back we need
+ // to respect this and convert non-HDR content to HDR format.
+ if (mUseColorManagement) {
+ Description managedState = mState;
+ Dataspace inputStandard = static_cast<Dataspace>(mDataSpace & Dataspace::STANDARD_MASK);
+ Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
+ Dataspace outputStandard =
+ static_cast<Dataspace>(mOutputDataSpace & Dataspace::STANDARD_MASK);
+ Dataspace outputTransfer =
+ static_cast<Dataspace>(mOutputDataSpace & Dataspace::TRANSFER_MASK);
+ bool needsXYZConversion = needsXYZTransformMatrix();
+
+ if (needsXYZConversion) {
+ // The supported input color spaces are standard RGB, Display P3 and BT2020.
+ switch (inputStandard) {
+ case Dataspace::STANDARD_DCI_P3:
+ managedState.inputTransformMatrix = mDisplayP3ToXyz;
+ break;
+ case Dataspace::STANDARD_BT2020:
+ managedState.inputTransformMatrix = mBt2020ToXyz;
+ break;
+ default:
+ managedState.inputTransformMatrix = mSrgbToXyz;
+ break;
+ }
+
+ // The supported output color spaces are BT2020, Display P3 and standard RGB.
+ switch (outputStandard) {
+ case Dataspace::STANDARD_BT2020:
+ managedState.outputTransformMatrix = mXyzToBt2020;
+ break;
+ case Dataspace::STANDARD_DCI_P3:
+ managedState.outputTransformMatrix = mXyzToDisplayP3;
+ break;
+ default:
+ managedState.outputTransformMatrix = mXyzToSrgb;
+ break;
+ }
+ } else if (inputStandard != outputStandard) {
+ // At this point, the input data space and output data space could be both
+ // HDR data spaces, but they match each other, we do nothing in this case.
+ // In addition to the case above, the input data space could be
+ // - scRGB linear
+ // - scRGB non-linear
+ // - sRGB
+ // - Display P3
+ // The output data spaces could be
+ // - sRGB
+ // - Display P3
+ if (outputStandard == Dataspace::STANDARD_BT709) {
+ managedState.outputTransformMatrix = mDisplayP3ToSrgb;
+ } else if (outputStandard == Dataspace::STANDARD_DCI_P3) {
+ managedState.outputTransformMatrix = mSrgbToDisplayP3;
+ }
+ }
+
+ // we need to convert the RGB value to linear space and convert it back when:
+ // - there is a color matrix that is not an identity matrix, or
+ // - there is an output transform matrix that is not an identity matrix, or
+ // - the input transfer function doesn't match the output transfer function.
+ if (managedState.hasColorMatrix() || managedState.hasOutputTransformMatrix() ||
+ inputTransfer != outputTransfer) {
+ managedState.inputTransferFunction =
+ Description::dataSpaceToTransferFunction(inputTransfer);
+ managedState.outputTransferFunction =
+ Description::dataSpaceToTransferFunction(outputTransfer);
+ }
+
+ ProgramCache::getInstance().useProgram(managedState);
+
+ glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
+
+ if (outputDebugPPMs) {
+ static uint64_t managedColorFrameCount = 0;
+ std::ostringstream out;
+ out << "/data/texture_out" << managedColorFrameCount++;
+ writePPM(out.str().c_str(), mVpWidth, mVpHeight);
+ }
+ } else {
+ ProgramCache::getInstance().useProgram(mState);
+
+ glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
+ }
+
+ if (mesh.getTexCoordsSize()) {
+ glDisableVertexAttribArray(Program::texCoords);
+ }
+}
+
+size_t GLES20RenderEngine::getMaxTextureSize() const {
+ return mMaxTextureSize;
+}
+
+size_t GLES20RenderEngine::getMaxViewportDims() const {
+ return mMaxViewportDims[0] < mMaxViewportDims[1] ? mMaxViewportDims[0] : mMaxViewportDims[1];
+}
+
+void GLES20RenderEngine::dump(String8& result) {
+ const GLExtensions& extensions = GLExtensions::getInstance();
+
+ result.appendFormat("EGL implementation : %s\n", extensions.getEGLVersion());
+ result.appendFormat("%s\n", extensions.getEGLExtensions());
+
+ result.appendFormat("GLES: %s, %s, %s\n", extensions.getVendor(), extensions.getRenderer(),
+ extensions.getVersion());
+ result.appendFormat("%s\n", extensions.getExtensions());
+
+ result.appendFormat("RenderEngine program cache size: %zu\n",
+ ProgramCache::getInstance().getSize());
+
+ result.appendFormat("RenderEngine last dataspace conversion: (%s) to (%s)\n",
+ dataspaceDetails(static_cast<android_dataspace>(mDataSpace)).c_str(),
+ dataspaceDetails(static_cast<android_dataspace>(mOutputDataSpace)).c_str());
+}
+
+GLES20RenderEngine::GlesVersion GLES20RenderEngine::parseGlesVersion(const char* str) {
+ int major, minor;
+ if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
+ if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
+ ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
+ return GLES_VERSION_1_0;
+ }
+ }
+
+ if (major == 1 && minor == 0) return GLES_VERSION_1_0;
+ if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
+ if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
+ if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
+
+ ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
+ return GLES_VERSION_1_0;
+}
+
+bool GLES20RenderEngine::isHdrDataSpace(const Dataspace dataSpace) const {
+ const Dataspace standard = static_cast<Dataspace>(dataSpace & Dataspace::STANDARD_MASK);
+ const Dataspace transfer = static_cast<Dataspace>(dataSpace & Dataspace::TRANSFER_MASK);
+ return standard == Dataspace::STANDARD_BT2020 &&
+ (transfer == Dataspace::TRANSFER_ST2084 || transfer == Dataspace::TRANSFER_HLG);
+}
+
+// For convenience, we want to convert the input color space to XYZ color space first,
+// and then convert from XYZ color space to output color space when
+// - SDR and HDR contents are mixed, either SDR content will be converted to HDR or
+// HDR content will be tone-mapped to SDR; Or,
+// - there are HDR PQ and HLG contents presented at the same time, where we want to convert
+// HLG content to PQ content.
+// In either case above, we need to operate the Y value in XYZ color space. Thus, when either
+// input data space or output data space is HDR data space, and the input transfer function
+// doesn't match the output transfer function, we would enable an intermediate transfrom to
+// XYZ color space.
+bool GLES20RenderEngine::needsXYZTransformMatrix() const {
+ const bool isInputHdrDataSpace = isHdrDataSpace(mDataSpace);
+ const bool isOutputHdrDataSpace = isHdrDataSpace(mOutputDataSpace);
+ const Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
+ const Dataspace outputTransfer =
+ static_cast<Dataspace>(mOutputDataSpace & Dataspace::TRANSFER_MASK);
+
+ return (isInputHdrDataSpace || isOutputHdrDataSpace) && inputTransfer != outputTransfer;
+}
+
+void GLES20RenderEngine::setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt) {
+ mEGLDisplay = display;
+ mEGLConfig = config;
+ mEGLContext = ctxt;
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android