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/*
* Copyright (C) 2014 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 "EglManager.h"
#include <string>
#include "utils/StringUtils.h"
#include <cutils/properties.h>
#include <log/log.h>
#include "Caches.h"
#include "DeviceInfo.h"
#include "Frame.h"
#include "Properties.h"
#include "RenderThread.h"
#include "renderstate/RenderState.h"
#include "Texture.h"
#include <EGL/eglext.h>
#include <GrContextOptions.h>
#include <gl/GrGLInterface.h>
#ifdef HWUI_GLES_WRAP_ENABLED
#include "debug/GlesDriver.h"
#endif
#define GLES_VERSION 2
// Android-specific addition that is used to show when frames began in systrace
EGLAPI void EGLAPIENTRY eglBeginFrame(EGLDisplay dpy, EGLSurface surface);
namespace android {
namespace uirenderer {
namespace renderthread {
#define ERROR_CASE(x) case x: return #x;
static const char* egl_error_str(EGLint error) {
switch (error) {
ERROR_CASE(EGL_SUCCESS)
ERROR_CASE(EGL_NOT_INITIALIZED)
ERROR_CASE(EGL_BAD_ACCESS)
ERROR_CASE(EGL_BAD_ALLOC)
ERROR_CASE(EGL_BAD_ATTRIBUTE)
ERROR_CASE(EGL_BAD_CONFIG)
ERROR_CASE(EGL_BAD_CONTEXT)
ERROR_CASE(EGL_BAD_CURRENT_SURFACE)
ERROR_CASE(EGL_BAD_DISPLAY)
ERROR_CASE(EGL_BAD_MATCH)
ERROR_CASE(EGL_BAD_NATIVE_PIXMAP)
ERROR_CASE(EGL_BAD_NATIVE_WINDOW)
ERROR_CASE(EGL_BAD_PARAMETER)
ERROR_CASE(EGL_BAD_SURFACE)
ERROR_CASE(EGL_CONTEXT_LOST)
default:
return "Unknown error";
}
}
const char* EglManager::eglErrorString() {
return egl_error_str(eglGetError());
}
static struct {
bool bufferAge = false;
bool setDamage = false;
bool noConfigContext = false;
bool pixelFormatFloat = false;
bool glColorSpace = false;
bool scRGB = false;
} EglExtensions;
EglManager::EglManager(RenderThread& thread)
: mRenderThread(thread)
, mEglDisplay(EGL_NO_DISPLAY)
, mEglConfig(nullptr)
, mEglConfigWideGamut(nullptr)
, mEglContext(EGL_NO_CONTEXT)
, mPBufferSurface(EGL_NO_SURFACE)
, mCurrentSurface(EGL_NO_SURFACE) {
}
void EglManager::initialize() {
if (hasEglContext()) return;
ATRACE_NAME("Creating EGLContext");
mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY,
"Failed to get EGL_DEFAULT_DISPLAY! err=%s", eglErrorString());
EGLint major, minor;
LOG_ALWAYS_FATAL_IF(eglInitialize(mEglDisplay, &major, &minor) == EGL_FALSE,
"Failed to initialize display %p! err=%s", mEglDisplay, eglErrorString());
ALOGI("Initialized EGL, version %d.%d", (int)major, (int)minor);
initExtensions();
// Now that extensions are loaded, pick a swap behavior
if (Properties::enablePartialUpdates) {
// An Adreno driver bug is causing rendering problems for SkiaGL with
// buffer age swap behavior (b/31957043). To temporarily workaround,
// we will use preserved swap behavior.
if (Properties::useBufferAge && EglExtensions.bufferAge) {
mSwapBehavior = SwapBehavior::BufferAge;
} else {
mSwapBehavior = SwapBehavior::Preserved;
}
}
loadConfigs();
createContext();
createPBufferSurface();
makeCurrent(mPBufferSurface);
DeviceInfo::initialize();
mRenderThread.renderState().onGLContextCreated();
if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaGL) {
#ifdef HWUI_GLES_WRAP_ENABLED
debug::GlesDriver* driver = debug::GlesDriver::get();
sk_sp<const GrGLInterface> glInterface(driver->getSkiaInterface());
#else
sk_sp<const GrGLInterface> glInterface(GrGLCreateNativeInterface());
#endif
LOG_ALWAYS_FATAL_IF(!glInterface.get());
GrContextOptions options;
options.fGpuPathRenderers &= ~GrContextOptions::GpuPathRenderers::kDistanceField;
mRenderThread.cacheManager().configureContext(&options);
mRenderThread.setGrContext(GrContext::Create(GrBackend::kOpenGL_GrBackend,
(GrBackendContext)glInterface.get(), options));
}
}
void EglManager::initExtensions() {
auto extensions = StringUtils::split(
eglQueryString(mEglDisplay, EGL_EXTENSIONS));
// For our purposes we don't care if EGL_BUFFER_AGE is a result of
// EGL_EXT_buffer_age or EGL_KHR_partial_update as our usage is covered
// under EGL_KHR_partial_update and we don't need the expanded scope
// that EGL_EXT_buffer_age provides.
EglExtensions.bufferAge = extensions.has("EGL_EXT_buffer_age")
|| extensions.has("EGL_KHR_partial_update");
EglExtensions.setDamage = extensions.has("EGL_KHR_partial_update");
LOG_ALWAYS_FATAL_IF(!extensions.has("EGL_KHR_swap_buffers_with_damage"),
"Missing required extension EGL_KHR_swap_buffers_with_damage");
EglExtensions.glColorSpace = extensions.has("EGL_KHR_gl_colorspace");
EglExtensions.noConfigContext = extensions.has("EGL_KHR_no_config_context");
EglExtensions.pixelFormatFloat = extensions.has("EGL_EXT_pixel_format_float");
#ifdef ANDROID_ENABLE_LINEAR_BLENDING
EglExtensions.scRGB = extensions.has("EGL_EXT_gl_colorspace_scrgb_linear");
#else
EglExtensions.scRGB = extensions.has("EGL_EXT_gl_colorspace_scrgb");
#endif
}
bool EglManager::hasEglContext() {
return mEglDisplay != EGL_NO_DISPLAY;
}
void EglManager::loadConfigs() {
ALOGD("Swap behavior %d", static_cast<int>(mSwapBehavior));
EGLint swapBehavior = (mSwapBehavior == SwapBehavior::Preserved)
? EGL_SWAP_BEHAVIOR_PRESERVED_BIT : 0;
EGLint attribs[] = {
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_CONFIG_CAVEAT, EGL_NONE,
EGL_STENCIL_SIZE, Stencil::getStencilSize(),
EGL_SURFACE_TYPE, EGL_WINDOW_BIT | swapBehavior,
EGL_NONE
};
EGLint numConfigs = 1;
if (!eglChooseConfig(mEglDisplay, attribs, &mEglConfig, numConfigs, &numConfigs)
|| numConfigs != 1) {
if (mSwapBehavior == SwapBehavior::Preserved) {
// Try again without dirty regions enabled
ALOGW("Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...");
mSwapBehavior = SwapBehavior::Discard;
loadConfigs();
return; // the call to loadConfigs() we just made picks the wide gamut config
} else {
// Failed to get a valid config
LOG_ALWAYS_FATAL("Failed to choose config, error = %s", eglErrorString());
}
}
if (EglExtensions.pixelFormatFloat) {
// If we reached this point, we have a valid swap behavior
EGLint attribs16F[] = {
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_COLOR_COMPONENT_TYPE_EXT, EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT,
EGL_RED_SIZE, 16,
EGL_GREEN_SIZE, 16,
EGL_BLUE_SIZE, 16,
EGL_ALPHA_SIZE, 16,
EGL_DEPTH_SIZE, 0,
EGL_STENCIL_SIZE, Stencil::getStencilSize(),
EGL_SURFACE_TYPE, EGL_WINDOW_BIT | swapBehavior,
EGL_NONE
};
numConfigs = 1;
if (!eglChooseConfig(mEglDisplay, attribs16F, &mEglConfigWideGamut, numConfigs, &numConfigs)
|| numConfigs != 1) {
ALOGE("Device claims wide gamut support, cannot find matching config, error = %s",
eglErrorString());
EglExtensions.pixelFormatFloat = false;
}
}
}
void EglManager::createContext() {
EGLint attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, GLES_VERSION,
EGL_NONE
};
mEglContext = eglCreateContext(mEglDisplay,
EglExtensions.noConfigContext ? ((EGLConfig) nullptr) : mEglConfig,
EGL_NO_CONTEXT, attribs);
LOG_ALWAYS_FATAL_IF(mEglContext == EGL_NO_CONTEXT,
"Failed to create context, error = %s", eglErrorString());
}
void EglManager::createPBufferSurface() {
LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY,
"usePBufferSurface() called on uninitialized GlobalContext!");
if (mPBufferSurface == EGL_NO_SURFACE) {
EGLint attribs[] = { EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE };
mPBufferSurface = eglCreatePbufferSurface(mEglDisplay, mEglConfig, attribs);
}
}
EGLSurface EglManager::createSurface(EGLNativeWindowType window, bool wideColorGamut) {
initialize();
wideColorGamut = wideColorGamut && EglExtensions.glColorSpace && EglExtensions.scRGB
&& EglExtensions.pixelFormatFloat && EglExtensions.noConfigContext;
// The color space we want to use depends on whether linear blending is turned
// on and whether the app has requested wide color gamut rendering. When wide
// color gamut rendering is off, the app simply renders in the display's native
// color gamut.
//
// When wide gamut rendering is off:
// - Blending is done by default in gamma space, which requires using a
// linear EGL color space (the GPU uses the color values as is)
// - If linear blending is on, we must use the sRGB EGL color space (the
// GPU will perform sRGB to linear and linear to SRGB conversions before
// and after blending)
//
// When wide gamut rendering is on we cannot rely on the GPU performing
// linear blending for us. We use two different color spaces to tag the
// surface appropriately for SurfaceFlinger:
// - Gamma blending (default) requires the use of the scRGB-nl color space
// - Linear blending requires the use of the scRGB color space
// Not all Android targets support the EGL_GL_COLOR_SPACE_KHR extension
// We insert to placeholders to set EGL_GL_COLORSPACE_KHR and its value.
// According to section 3.4.1 of the EGL specification, the attributes
// list is considered empty if the first entry is EGL_NONE
EGLint attribs[] = {
EGL_NONE, EGL_NONE,
EGL_NONE
};
if (EglExtensions.glColorSpace) {
attribs[0] = EGL_GL_COLORSPACE_KHR;
#ifdef ANDROID_ENABLE_LINEAR_BLENDING
if (wideColorGamut) {
attribs[1] = EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT;
} else {
attribs[1] = EGL_GL_COLORSPACE_SRGB_KHR;
}
#else
if (wideColorGamut) {
attribs[1] = EGL_GL_COLORSPACE_SCRGB_EXT;
} else {
attribs[1] = EGL_GL_COLORSPACE_LINEAR_KHR;
}
#endif
}
EGLSurface surface = eglCreateWindowSurface(mEglDisplay,
wideColorGamut ? mEglConfigWideGamut : mEglConfig, window, attribs);
LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
"Failed to create EGLSurface for window %p, eglErr = %s",
(void*) window, eglErrorString());
if (mSwapBehavior != SwapBehavior::Preserved) {
LOG_ALWAYS_FATAL_IF(eglSurfaceAttrib(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED) == EGL_FALSE,
"Failed to set swap behavior to destroyed for window %p, eglErr = %s",
(void*) window, eglErrorString());
}
return surface;
}
void EglManager::destroySurface(EGLSurface surface) {
if (isCurrent(surface)) {
makeCurrent(EGL_NO_SURFACE);
}
if (!eglDestroySurface(mEglDisplay, surface)) {
ALOGW("Failed to destroy surface %p, error=%s", (void*)surface, eglErrorString());
}
}
void EglManager::destroy() {
if (mEglDisplay == EGL_NO_DISPLAY) return;
mRenderThread.setGrContext(nullptr);
mRenderThread.renderState().onGLContextDestroyed();
eglDestroyContext(mEglDisplay, mEglContext);
eglDestroySurface(mEglDisplay, mPBufferSurface);
eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglTerminate(mEglDisplay);
eglReleaseThread();
mEglDisplay = EGL_NO_DISPLAY;
mEglContext = EGL_NO_CONTEXT;
mPBufferSurface = EGL_NO_SURFACE;
mCurrentSurface = EGL_NO_SURFACE;
}
bool EglManager::makeCurrent(EGLSurface surface, EGLint* errOut) {
if (isCurrent(surface)) return false;
if (surface == EGL_NO_SURFACE) {
// Ensure we always have a valid surface & context
surface = mPBufferSurface;
}
if (!eglMakeCurrent(mEglDisplay, surface, surface, mEglContext)) {
if (errOut) {
*errOut = eglGetError();
ALOGW("Failed to make current on surface %p, error=%s",
(void*)surface, egl_error_str(*errOut));
} else {
LOG_ALWAYS_FATAL("Failed to make current on surface %p, error=%s",
(void*)surface, eglErrorString());
}
}
mCurrentSurface = surface;
if (Properties::disableVsync) {
eglSwapInterval(mEglDisplay, 0);
}
return true;
}
EGLint EglManager::queryBufferAge(EGLSurface surface) {
switch (mSwapBehavior) {
case SwapBehavior::Discard:
return 0;
case SwapBehavior::Preserved:
return 1;
case SwapBehavior::BufferAge:
EGLint bufferAge;
eglQuerySurface(mEglDisplay, surface, EGL_BUFFER_AGE_EXT, &bufferAge);
return bufferAge;
}
return 0;
}
Frame EglManager::beginFrame(EGLSurface surface) {
LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
"Tried to beginFrame on EGL_NO_SURFACE!");
makeCurrent(surface);
Frame frame;
frame.mSurface = surface;
eglQuerySurface(mEglDisplay, surface, EGL_WIDTH, &frame.mWidth);
eglQuerySurface(mEglDisplay, surface, EGL_HEIGHT, &frame.mHeight);
frame.mBufferAge = queryBufferAge(surface);
eglBeginFrame(mEglDisplay, surface);
return frame;
}
void EglManager::damageFrame(const Frame& frame, const SkRect& dirty) {
#ifdef EGL_KHR_partial_update
if (EglExtensions.setDamage && mSwapBehavior == SwapBehavior::BufferAge) {
EGLint rects[4];
frame.map(dirty, rects);
if (!eglSetDamageRegionKHR(mEglDisplay, frame.mSurface, rects, 1)) {
LOG_ALWAYS_FATAL("Failed to set damage region on surface %p, error=%s",
(void*)frame.mSurface, eglErrorString());
}
}
#endif
}
bool EglManager::damageRequiresSwap() {
return EglExtensions.setDamage && mSwapBehavior == SwapBehavior::BufferAge;
}
bool EglManager::swapBuffers(const Frame& frame, const SkRect& screenDirty) {
if (CC_UNLIKELY(Properties::waitForGpuCompletion)) {
ATRACE_NAME("Finishing GPU work");
fence();
}
EGLint rects[4];
frame.map(screenDirty, rects);
eglSwapBuffersWithDamageKHR(mEglDisplay, frame.mSurface, rects,
screenDirty.isEmpty() ? 0 : 1);
EGLint err = eglGetError();
if (CC_LIKELY(err == EGL_SUCCESS)) {
return true;
}
if (err == EGL_BAD_SURFACE || err == EGL_BAD_NATIVE_WINDOW) {
// For some reason our surface was destroyed out from under us
// This really shouldn't happen, but if it does we can recover easily
// by just not trying to use the surface anymore
ALOGW("swapBuffers encountered EGL error %d on %p, halting rendering...",
err, frame.mSurface);
return false;
}
LOG_ALWAYS_FATAL("Encountered EGL error %d %s during rendering",
err, egl_error_str(err));
// Impossible to hit this, but the compiler doesn't know that
return false;
}
void EglManager::fence() {
EGLSyncKHR fence = eglCreateSyncKHR(mEglDisplay, EGL_SYNC_FENCE_KHR, NULL);
eglClientWaitSyncKHR(mEglDisplay, fence,
EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, EGL_FOREVER_KHR);
eglDestroySyncKHR(mEglDisplay, fence);
}
bool EglManager::setPreserveBuffer(EGLSurface surface, bool preserve) {
if (mSwapBehavior != SwapBehavior::Preserved) return false;
bool preserved = eglSurfaceAttrib(mEglDisplay, surface, EGL_SWAP_BEHAVIOR,
preserve ? EGL_BUFFER_PRESERVED : EGL_BUFFER_DESTROYED);
if (!preserved) {
ALOGW("Failed to set EGL_SWAP_BEHAVIOR on surface %p, error=%s",
(void*) surface, eglErrorString());
// Maybe it's already set?
EGLint swapBehavior;
if (eglQuerySurface(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, &swapBehavior)) {
preserved = (swapBehavior == EGL_BUFFER_PRESERVED);
} else {
ALOGW("Failed to query EGL_SWAP_BEHAVIOR on surface %p, error=%p",
(void*) surface, eglErrorString());
}
}
return preserved;
}
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */