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 sk_sp<SkColorFilter> colorFilter, int alpha, SkBlendMode mode, bool blend); 36 virtual ~GlLayer(); 37 getWidth()38 uint32_t getWidth() const override { return texture.mWidth; } 39 getHeight()40 uint32_t getHeight() const override { return texture.mHeight; } 41 setSize(uint32_t width,uint32_t height)42 void setSize(uint32_t width, uint32_t height) override { 43 texture.updateLayout(width, height, texture.internalFormat(), texture.format(), 44 texture.target()); 45 } 46 setBlend(bool blend)47 void setBlend(bool blend) override { texture.blend = blend; } 48 isBlend()49 bool isBlend() const override { return texture.blend; } 50 getTextureId()51 inline GLuint getTextureId() const { return texture.id(); } 52 getTexture()53 inline Texture& getTexture() { return texture; } 54 getRenderTarget()55 inline GLenum getRenderTarget() const { return texture.target(); } 56 isRenderable()57 inline bool isRenderable() const { return texture.target() != GL_NONE; } 58 59 void setRenderTarget(GLenum renderTarget); 60 61 void generateTexture(); 62 63 /** 64 * Lost the GL context but the layer is still around, mark it invalid internally 65 * so the dtor knows not to do any GL work 66 */ 67 void onGlContextLost(); 68 69 private: 70 Caches& caches; 71 72 /** 73 * The texture backing this layer. 74 */ 75 Texture texture; 76 }; // struct GlLayer 77 78 }; // namespace uirenderer 79 }; // namespace android 80