1 /* 2 * Copyright (C) 2017 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 #pragma once 18 19 #include "Layer.h" 20 21 #include "Texture.h" 22 23 namespace android { 24 namespace uirenderer { 25 26 // Forward declarations 27 class Caches; 28 29 /** 30 * A layer has dimensions and is backed by an OpenGL texture or FBO. 31 */ 32 class GlLayer : public Layer { 33 public: 34 GlLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight, 35 SkColorFilter* colorFilter, int alpha, SkBlendMode mode, bool blend); 36 virtual ~GlLayer(); 37 38 uint32_t getWidth() const override { 39 return texture.mWidth; 40 } 41 42 uint32_t getHeight() const override { 43 return texture.mHeight; 44 } 45 46 void setSize(uint32_t width, uint32_t height) override { 47 texture.updateLayout(width, height, texture.internalFormat(), texture.format(), 48 texture.target()); 49 } 50 51 void setBlend(bool blend) override { 52 texture.blend = blend; 53 } 54 55 bool isBlend() const override { 56 return texture.blend; 57 } 58 59 inline GLuint getTextureId() const { 60 return texture.id(); 61 } 62 63 inline Texture& getTexture() { 64 return texture; 65 } 66 67 inline GLenum getRenderTarget() const { 68 return texture.target(); 69 } 70 71 inline bool isRenderable() const { 72 return texture.target() != GL_NONE; 73 } 74 75 void setRenderTarget(GLenum renderTarget); 76 77 void generateTexture(); 78 79 /** 80 * Lost the GL context but the layer is still around, mark it invalid internally 81 * so the dtor knows not to do any GL work 82 */ 83 void onGlContextLost(); 84 85 private: 86 Caches& caches; 87 88 /** 89 * The texture backing this layer. 90 */ 91 Texture texture; 92 }; // struct GlLayer 93 94 }; // namespace uirenderer 95 }; // namespace android 96