BakedOpRenderer.h revision 98787e6c9b2c10b1ab7820bdac168686025b924a
1/* 2 * Copyright (C) 2015 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#ifndef ANDROID_HWUI_BAKED_OP_RENDERER_H 18#define ANDROID_HWUI_BAKED_OP_RENDERER_H 19 20#include "BakedOpState.h" 21#include "Matrix.h" 22 23namespace android { 24namespace uirenderer { 25 26class Caches; 27struct Glop; 28class Layer; 29class RenderState; 30 31/** 32 * Main rendering manager for a collection of work - one frame + any contained FBOs. 33 * 34 * Manages frame and FBO lifecycle, binding the GL framebuffer as appropriate. This is the only 35 * place where FBOs are bound, created, and destroyed. 36 * 37 * All rendering operations will be sent by the Dispatcher, a collection of static methods, 38 * which has intentionally limited access to the renderer functionality. 39 */ 40class BakedOpRenderer { 41public: 42 /** 43 * Position agnostic shadow lighting info. Used with all shadow ops in scene. 44 */ 45 struct LightInfo { 46 float lightRadius = 0; 47 uint8_t ambientShadowAlpha = 0; 48 uint8_t spotShadowAlpha = 0; 49 }; 50 51 BakedOpRenderer(Caches& caches, RenderState& renderState, bool opaque, const LightInfo& lightInfo) 52 : mRenderState(renderState) 53 , mCaches(caches) 54 , mOpaque(opaque) 55 , mLightInfo(lightInfo) { 56 } 57 58 RenderState& renderState() { return mRenderState; } 59 Caches& caches() { return mCaches; } 60 61 void startFrame(uint32_t width, uint32_t height, const Rect& repaintRect); 62 void endFrame(); 63 OffscreenBuffer* startTemporaryLayer(uint32_t width, uint32_t height); 64 void startRepaintLayer(OffscreenBuffer* offscreenBuffer, const Rect& repaintRect); 65 void endLayer(); 66 67 Texture* getTexture(const SkBitmap* bitmap); 68 const LightInfo& getLightInfo() { return mLightInfo; } 69 70 void renderGlop(const BakedOpState& state, const Glop& glop); 71 bool didDraw() { return mHasDrawn; } 72private: 73 void setViewport(uint32_t width, uint32_t height); 74 void clearColorBuffer(const Rect& clearRect); 75 76 RenderState& mRenderState; 77 Caches& mCaches; 78 bool mOpaque; 79 bool mHasDrawn = false; 80 81 // render target state - setup by start/end layer/frame 82 // only valid to use in between start/end pairs. 83 struct { 84 GLuint frameBufferId = 0; 85 OffscreenBuffer* offscreenBuffer = nullptr; 86 uint32_t viewportWidth = 0; 87 uint32_t viewportHeight = 0; 88 Matrix4 orthoMatrix; 89 } mRenderTarget; 90 91 const LightInfo mLightInfo; 92}; 93 94/** 95 * Provides all "onBitmapOp(...)" style static methods for every op type, which convert the 96 * RecordedOps and their state to Glops, and renders them with the provided BakedOpRenderer. 97 * 98 * This dispatcher is separate from the renderer so that the dispatcher / renderer interaction is 99 * minimal through public BakedOpRenderer APIs. 100 */ 101class BakedOpDispatcher { 102public: 103 // Declares all "onBitmapOp(...)" style methods for every op type 104#define DISPATCH_METHOD(Type) \ 105 static void on##Type(BakedOpRenderer& renderer, const Type& op, const BakedOpState& state); 106 MAP_OPS(DISPATCH_METHOD); 107}; 108 109}; // namespace uirenderer 110}; // namespace android 111 112#endif // ANDROID_HWUI_BAKED_OP_RENDERER_H 113