libs/hwui/renderthread/EglManager.cpp - platform/frameworks/base - Git at Google

 /*
  * 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.
  */

 #define LOG_TAG "EglContext"

 #include "EglManager.h"

 #include <cutils/log.h>
 #include <cutils/properties.h>

 #include "../RenderState.h"
 #include "RenderThread.h"

 #define PROPERTY_RENDER_DIRTY_REGIONS "debug.hwui.render_dirty_regions"
 #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";
     }
 }
 static const char* egl_error_str() {
     return egl_error_str(eglGetError());
 }

 static bool load_dirty_regions_property() {
     char buf[PROPERTY_VALUE_MAX];
     int len = property_get(PROPERTY_RENDER_DIRTY_REGIONS, buf, "true");
     return !strncasecmp("true", buf, len);
 }

 EglManager::EglManager(RenderThread& thread)
         : mRenderThread(thread)
         , mEglDisplay(EGL_NO_DISPLAY)
         , mEglConfig(0)
         , mEglContext(EGL_NO_CONTEXT)
         , mPBufferSurface(EGL_NO_SURFACE)
         , mRequestDirtyRegions(load_dirty_regions_property())
         , mCurrentSurface(EGL_NO_SURFACE)
         , mAtlasMap(NULL)
         , mAtlasMapSize(0) {
     mCanSetDirtyRegions = mRequestDirtyRegions;
     ALOGD("Render dirty regions requested: %s", mRequestDirtyRegions ? "true" : "false");
 }

 void EglManager::initialize() {
     if (hasEglContext()) return;

     mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
     LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY,
             "Failed to get EGL_DEFAULT_DISPLAY! err=%s", egl_error_str());

     EGLint major, minor;
     LOG_ALWAYS_FATAL_IF(eglInitialize(mEglDisplay, &major, &minor) == EGL_FALSE,
             "Failed to initialize display %p! err=%s", mEglDisplay, egl_error_str());

     ALOGI("Initialized EGL, version %d.%d", (int)major, (int)minor);

     loadConfig();
     createContext();
     usePBufferSurface();
     mRenderThread.renderState().onGLContextCreated();
     initAtlas();
 }

 bool EglManager::hasEglContext() {
     return mEglDisplay != EGL_NO_DISPLAY;
 }

 void EglManager::requireGlContext() {
     LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY, "No EGL context");

     // We don't care *WHAT* surface is active, just that one is active to give
     // us access to the GL context
     if (mCurrentSurface == EGL_NO_SURFACE) {
         usePBufferSurface();
     }
 }

 void EglManager::loadConfig() {
     EGLint swapBehavior = mCanSetDirtyRegions ? 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 num_configs = 1;
     if (!eglChooseConfig(mEglDisplay, attribs, &mEglConfig, num_configs, &num_configs)
             || num_configs != 1) {
         // Failed to get a valid config
         if (mCanSetDirtyRegions) {
             ALOGW("Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...");
             // Try again without dirty regions enabled
             mCanSetDirtyRegions = false;
             loadConfig();
         } else {
             LOG_ALWAYS_FATAL("Failed to choose config, error = %s", egl_error_str());
         }
     }
 }

 void EglManager::createContext() {
     EGLint attribs[] = { EGL_CONTEXT_CLIENT_VERSION, GLES_VERSION, EGL_NONE };
     mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT, attribs);
     LOG_ALWAYS_FATAL_IF(mEglContext == EGL_NO_CONTEXT,
         "Failed to create context, error = %s", egl_error_str());
 }

 void EglManager::setTextureAtlas(const sp<GraphicBuffer>& buffer,
         int64_t* map, size_t mapSize) {

     // Already initialized
     if (mAtlasBuffer.get()) {
         ALOGW("Multiple calls to setTextureAtlas!");
         delete map;
         return;
     }

     mAtlasBuffer = buffer;
     mAtlasMap = map;
     mAtlasMapSize = mapSize;

     if (hasEglContext()) {
         usePBufferSurface();
         initAtlas();
     }
 }

 void EglManager::initAtlas() {
     if (mAtlasBuffer.get()) {
         Caches::getInstance().assetAtlas.init(mAtlasBuffer, mAtlasMap, mAtlasMapSize);
     }
 }

 void EglManager::usePBufferSurface() {
     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);
     }
     makeCurrent(mPBufferSurface);
 }

 EGLSurface EglManager::createSurface(EGLNativeWindowType window) {
     initialize();
     EGLSurface surface = eglCreateWindowSurface(mEglDisplay, mEglConfig, window, NULL);
     LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
             "Failed to create EGLSurface for window %p, eglErr = %s",
             (void*) window, egl_error_str());
     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, egl_error_str());
     }
 }

 void EglManager::destroy() {
     if (mEglDisplay == EGL_NO_DISPLAY) return;

     usePBufferSurface();
     if (Caches::hasInstance()) {
         Caches::getInstance().terminate();
     }

     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) {
     if (isCurrent(surface)) return false;

     if (surface == EGL_NO_SURFACE) {
         // If we are setting EGL_NO_SURFACE we don't care about any of the potential
         // return errors, which would only happen if mEglDisplay had already been
         // destroyed in which case the current context is already NO_CONTEXT
         eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
     } else if (!eglMakeCurrent(mEglDisplay, surface, surface, mEglContext)) {
         LOG_ALWAYS_FATAL("Failed to make current on surface %p, error=%s",
                 (void*)surface, egl_error_str());
     }
     mCurrentSurface = surface;
     return true;
 }

 void EglManager::beginFrame(EGLSurface surface, EGLint* width, EGLint* height) {
     LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
             "Tried to beginFrame on EGL_NO_SURFACE!");
     makeCurrent(surface);
     if (width) {
         eglQuerySurface(mEglDisplay, surface, EGL_WIDTH, width);
     }
     if (height) {
         eglQuerySurface(mEglDisplay, surface, EGL_HEIGHT, height);
     }
     eglBeginFrame(mEglDisplay, surface);
 }

 void EglManager::swapBuffers(EGLSurface surface) {
     eglSwapBuffers(mEglDisplay, surface);
     EGLint err = eglGetError();
     LOG_ALWAYS_FATAL_IF(err != EGL_SUCCESS,
             "Encountered EGL error %d %s during rendering", err, egl_error_str(err));
 }

 bool EglManager::enableDirtyRegions(EGLSurface surface) {
     if (!mRequestDirtyRegions) return false;

     if (mCanSetDirtyRegions) {
         if (!eglSurfaceAttrib(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED)) {
             ALOGW("Failed to set EGL_SWAP_BEHAVIOR on surface %p, error=%s",
                     (void*) surface, egl_error_str());
             return false;
         }
         return true;
     }
     // Perhaps it is already enabled?
     EGLint value;
     if (!eglQuerySurface(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, &value)) {
         ALOGW("Failed to query EGL_SWAP_BEHAVIOR on surface %p, error=%p",
                 (void*) surface, egl_error_str());
         return false;
     }
     return value == EGL_BUFFER_PRESERVED;
 }

 } /* namespace renderthread */
 } /* namespace uirenderer */
 } /* namespace android */
	/*
	* 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.
	*/

	#define LOG_TAG "EglContext"

	#include "EglManager.h"

	#include <cutils/log.h>
	#include <cutils/properties.h>

	#include "../RenderState.h"
	#include "RenderThread.h"

	#define PROPERTY_RENDER_DIRTY_REGIONS "debug.hwui.render_dirty_regions"
	#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";
	}
	}
	static const char* egl_error_str() {
	return egl_error_str(eglGetError());
	}

	static bool load_dirty_regions_property() {
	char buf[PROPERTY_VALUE_MAX];
	int len = property_get(PROPERTY_RENDER_DIRTY_REGIONS, buf, "true");
	return !strncasecmp("true", buf, len);
	}

	EglManager::EglManager(RenderThread& thread)
	: mRenderThread(thread)
	, mEglDisplay(EGL_NO_DISPLAY)
	, mEglConfig(0)
	, mEglContext(EGL_NO_CONTEXT)
	, mPBufferSurface(EGL_NO_SURFACE)
	, mRequestDirtyRegions(load_dirty_regions_property())
	, mCurrentSurface(EGL_NO_SURFACE)
	, mAtlasMap(NULL)
	, mAtlasMapSize(0) {
	mCanSetDirtyRegions = mRequestDirtyRegions;
	ALOGD("Render dirty regions requested: %s", mRequestDirtyRegions ? "true" : "false");
	}

	void EglManager::initialize() {
	if (hasEglContext()) return;

	mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
	LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY,
	"Failed to get EGL_DEFAULT_DISPLAY! err=%s", egl_error_str());

	EGLint major, minor;
	LOG_ALWAYS_FATAL_IF(eglInitialize(mEglDisplay, &major, &minor) == EGL_FALSE,
	"Failed to initialize display %p! err=%s", mEglDisplay, egl_error_str());

	ALOGI("Initialized EGL, version %d.%d", (int)major, (int)minor);

	loadConfig();
	createContext();
	usePBufferSurface();
	mRenderThread.renderState().onGLContextCreated();
	initAtlas();
	}

	bool EglManager::hasEglContext() {
	return mEglDisplay != EGL_NO_DISPLAY;
	}

	void EglManager::requireGlContext() {
	LOG_ALWAYS_FATAL_IF(mEglDisplay == EGL_NO_DISPLAY, "No EGL context");

	// We don't care WHAT surface is active, just that one is active to give
	// us access to the GL context
	if (mCurrentSurface == EGL_NO_SURFACE) {
	usePBufferSurface();
	}
	}

	void EglManager::loadConfig() {
	EGLint swapBehavior = mCanSetDirtyRegions ? 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 num_configs = 1;
	if (!eglChooseConfig(mEglDisplay, attribs, &mEglConfig, num_configs, &num_configs)
	\|\| num_configs != 1) {
	// Failed to get a valid config
	if (mCanSetDirtyRegions) {
	ALOGW("Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...");
	// Try again without dirty regions enabled
	mCanSetDirtyRegions = false;
	loadConfig();
	} else {
	LOG_ALWAYS_FATAL("Failed to choose config, error = %s", egl_error_str());
	}
	}
	}

	void EglManager::createContext() {
	EGLint attribs[] = { EGL_CONTEXT_CLIENT_VERSION, GLES_VERSION, EGL_NONE };
	mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT, attribs);
	LOG_ALWAYS_FATAL_IF(mEglContext == EGL_NO_CONTEXT,
	"Failed to create context, error = %s", egl_error_str());
	}

	void EglManager::setTextureAtlas(const sp<GraphicBuffer>& buffer,
	int64_t* map, size_t mapSize) {

	// Already initialized
	if (mAtlasBuffer.get()) {
	ALOGW("Multiple calls to setTextureAtlas!");
	delete map;
	return;
	}

	mAtlasBuffer = buffer;
	mAtlasMap = map;
	mAtlasMapSize = mapSize;

	if (hasEglContext()) {
	usePBufferSurface();
	initAtlas();
	}
	}

	void EglManager::initAtlas() {
	if (mAtlasBuffer.get()) {
	Caches::getInstance().assetAtlas.init(mAtlasBuffer, mAtlasMap, mAtlasMapSize);
	}
	}

	void EglManager::usePBufferSurface() {
	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);
	}
	makeCurrent(mPBufferSurface);
	}

	EGLSurface EglManager::createSurface(EGLNativeWindowType window) {
	initialize();
	EGLSurface surface = eglCreateWindowSurface(mEglDisplay, mEglConfig, window, NULL);
	LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
	"Failed to create EGLSurface for window %p, eglErr = %s",
	(void*) window, egl_error_str());
	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, egl_error_str());
	}
	}

	void EglManager::destroy() {
	if (mEglDisplay == EGL_NO_DISPLAY) return;

	usePBufferSurface();
	if (Caches::hasInstance()) {
	Caches::getInstance().terminate();
	}

	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) {
	if (isCurrent(surface)) return false;

	if (surface == EGL_NO_SURFACE) {
	// If we are setting EGL_NO_SURFACE we don't care about any of the potential
	// return errors, which would only happen if mEglDisplay had already been
	// destroyed in which case the current context is already NO_CONTEXT
	eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
	} else if (!eglMakeCurrent(mEglDisplay, surface, surface, mEglContext)) {
	LOG_ALWAYS_FATAL("Failed to make current on surface %p, error=%s",
	(void*)surface, egl_error_str());
	}
	mCurrentSurface = surface;
	return true;
	}

	void EglManager::beginFrame(EGLSurface surface, EGLint* width, EGLint* height) {
	LOG_ALWAYS_FATAL_IF(surface == EGL_NO_SURFACE,
	"Tried to beginFrame on EGL_NO_SURFACE!");
	makeCurrent(surface);
	if (width) {
	eglQuerySurface(mEglDisplay, surface, EGL_WIDTH, width);
	}
	if (height) {
	eglQuerySurface(mEglDisplay, surface, EGL_HEIGHT, height);
	}
	eglBeginFrame(mEglDisplay, surface);
	}

	void EglManager::swapBuffers(EGLSurface surface) {
	eglSwapBuffers(mEglDisplay, surface);
	EGLint err = eglGetError();
	LOG_ALWAYS_FATAL_IF(err != EGL_SUCCESS,
	"Encountered EGL error %d %s during rendering", err, egl_error_str(err));
	}

	bool EglManager::enableDirtyRegions(EGLSurface surface) {
	if (!mRequestDirtyRegions) return false;

	if (mCanSetDirtyRegions) {
	if (!eglSurfaceAttrib(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED)) {
	ALOGW("Failed to set EGL_SWAP_BEHAVIOR on surface %p, error=%s",
	(void*) surface, egl_error_str());
	return false;
	}
	return true;
	}
	// Perhaps it is already enabled?
	EGLint value;
	if (!eglQuerySurface(mEglDisplay, surface, EGL_SWAP_BEHAVIOR, &value)) {
	ALOGW("Failed to query EGL_SWAP_BEHAVIOR on surface %p, error=%p",
	(void*) surface, egl_error_str());
	return false;
	}
	return value == EGL_BUFFER_PRESERVED;
	}

	} /* namespace renderthread */
	} /* namespace uirenderer */
	} /* namespace android */