RenderEngine.h revision 458197de008be8fe561286b09f4edddb2f5c540a
1/* 2 * Copyright 2013 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 17 18#ifndef SF_RENDERENGINE_H_ 19#define SF_RENDERENGINE_H_ 20 21#include <stdint.h> 22#include <sys/types.h> 23 24#include <EGL/egl.h> 25#include <EGL/eglext.h> 26 27// --------------------------------------------------------------------------- 28namespace android { 29// --------------------------------------------------------------------------- 30 31class String8; 32class Rect; 33class Region; 34class Mesh; 35 36class RenderEngine { 37 enum GlesVersion { 38 GLES_VERSION_1_0 = 0x10000, 39 GLES_VERSION_1_1 = 0x10001, 40 GLES_VERSION_2_0 = 0x20000, 41 GLES_VERSION_3_0 = 0x30000, 42 }; 43 static GlesVersion parseGlesVersion(const char* str); 44 45 EGLContext mEGLContext; 46 void setEGLContext(EGLContext ctxt); 47 48 virtual void bindImageAsFramebuffer(EGLImageKHR image, uint32_t* texName, uint32_t* fbName, uint32_t* status) = 0; 49 virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName) = 0; 50 51protected: 52 RenderEngine(); 53 virtual ~RenderEngine() = 0; 54 55public: 56 static RenderEngine* create(EGLDisplay display, EGLConfig config); 57 58 // dump the extension strings. always call the base class. 59 virtual void dump(String8& result); 60 61 // helpers 62 void clearWithColor(float red, float green, float blue, float alpha); 63 void fillRegionWithColor(const Region& region, uint32_t height, 64 float red, float green, float blue, float alpha); 65 66 // common to all GL versions 67 void setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top); 68 void disableScissor(); 69 void genTextures(size_t count, uint32_t* names); 70 void deleteTextures(size_t count, uint32_t const* names); 71 72 class BindImageAsFramebuffer { 73 RenderEngine& mEngine; 74 uint32_t mTexName, mFbName; 75 uint32_t mStatus; 76 public: 77 BindImageAsFramebuffer(RenderEngine& engine, EGLImageKHR image); 78 ~BindImageAsFramebuffer(); 79 int getStatus() const; 80 }; 81 82 // set-up 83 virtual void checkErrors() const; 84 virtual void setViewportAndProjection(size_t vpw, size_t vph, size_t w, size_t h, bool yswap) = 0; 85 virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha) = 0; 86 virtual void setupDimLayerBlending(int alpha) = 0; 87 virtual void setupLayerTexturing(size_t textureName, bool useFiltering, const float* textureMatrix) = 0; 88 virtual void setupLayerBlackedOut() = 0; 89 90 virtual void disableTexturing() = 0; 91 virtual void disableBlending() = 0; 92 93 // drawing 94 virtual void fillWithColor(const Mesh& mesh, float r, float g, float b, float a) = 0; 95 virtual void drawMesh(const Mesh& mesh) = 0; 96 97 // queries 98 virtual size_t getMaxTextureSize() const = 0; 99 virtual size_t getMaxViewportDims() const = 0; 100 101 102 103 EGLContext getEGLContext() const; 104}; 105 106// --------------------------------------------------------------------------- 107}; // namespace android 108// --------------------------------------------------------------------------- 109 110#endif /* SF_RENDERENGINE_H_ */ 111