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 #ifndef RENDERSTATE_BLEND_H 17 #define RENDERSTATE_BLEND_H 18 19 #include "Vertex.h" 20 21 #include <GLES2/gl2.h> 22 #include <GLES2/gl2ext.h> 23 #include <SkBlendMode.h> 24 #include <memory> 25 26 namespace android { 27 namespace uirenderer { 28 29 class Blend { 30 friend class RenderState; 31 32 public: 33 // dictates whether to swap src/dst 34 enum class ModeOrderSwap { 35 NoSwap, 36 Swap, 37 }; 38 void syncEnabled(); 39 40 static void getFactors(SkBlendMode mode, ModeOrderSwap modeUsage, GLenum* outSrc, 41 GLenum* outDst); 42 void setFactors(GLenum src, GLenum dst); 43 getEnabled()44 bool getEnabled() { return mEnabled; } getFactors(GLenum * src,GLenum * dst)45 void getFactors(GLenum* src, GLenum* dst) { 46 *src = mSrcMode; 47 *dst = mDstMode; 48 } 49 50 void dump(); 51 52 private: 53 Blend(); 54 void invalidate(); 55 bool mEnabled; 56 GLenum mSrcMode; 57 GLenum mDstMode; 58 }; 59 60 } /* namespace uirenderer */ 61 } /* namespace android */ 62 63 #endif // RENDERSTATE_BLEND_H 64