1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef EGLMANAGER_H 17 #define EGLMANAGER_H 18 19 #include <cutils/compiler.h> 20 #include <EGL/egl.h> 21 #include <SkRect.h> 22 #include <ui/GraphicBuffer.h> 23 #include <utils/StrongPointer.h> 24 25 namespace android { 26 namespace uirenderer { 27 namespace renderthread { 28 29 class RenderThread; 30 31 // This class contains the shared global EGL objects, such as EGLDisplay 32 // and EGLConfig, which are re-used by CanvasContext 33 class EglManager { 34 public: 35 // Returns true on success, false on failure 36 void initialize(); 37 38 bool hasEglContext(); 39 40 EGLSurface createSurface(EGLNativeWindowType window); 41 void destroySurface(EGLSurface surface); 42 43 void destroy(); 44 45 bool isCurrent(EGLSurface surface) { return mCurrentSurface == surface; } 46 // Returns true if the current surface changed, false if it was already current 47 bool makeCurrent(EGLSurface surface, EGLint* errOut = nullptr); 48 void beginFrame(EGLSurface surface, EGLint* width, EGLint* height); 49 bool swapBuffers(EGLSurface surface, const SkRect& dirty, EGLint width, EGLint height); 50 51 // Returns true iff the surface is now preserving buffers. 52 bool setPreserveBuffer(EGLSurface surface, bool preserve); 53 54 void setTextureAtlas(const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize); 55 56 void fence(); 57 58 private: 59 friend class RenderThread; 60 61 EglManager(RenderThread& thread); 62 // EglContext is never destroyed, method is purposely not implemented 63 ~EglManager(); 64 65 void createPBufferSurface(); 66 void loadConfig(); 67 void createContext(); 68 void initAtlas(); 69 70 RenderThread& mRenderThread; 71 72 EGLDisplay mEglDisplay; 73 EGLConfig mEglConfig; 74 EGLContext mEglContext; 75 EGLSurface mPBufferSurface; 76 77 const bool mAllowPreserveBuffer; 78 bool mCanSetPreserveBuffer; 79 80 EGLSurface mCurrentSurface; 81 82 sp<GraphicBuffer> mAtlasBuffer; 83 int64_t* mAtlasMap; 84 size_t mAtlasMapSize; 85 }; 86 87 } /* namespace renderthread */ 88 } /* namespace uirenderer */ 89 } /* namespace android */ 90 91 #endif /* EGLMANAGER_H */ 92
