1 /* 2 Copyright 2010 Google Inc. 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 GrGpuGLFixed_DEFINED 19 #define GrGpuGLFixed_DEFINED 20 21 #include "GrGpuGL.h" 22 23 // Fixed Pipeline OpenGL or OpenGL ES 1.x 24 class GrGpuGLFixed : public GrGpuGL { 25 public: 26 GrGpuGLFixed(); 27 virtual ~GrGpuGLFixed(); 28 29 protected: 30 // overrides from GrGpu 31 virtual bool flushGraphicsState(GrPrimitiveType type); 32 virtual void setupGeometry(int* startVertex, 33 int* startIndex, 34 int vertexCount, 35 int indexCount); 36 37 private: 38 virtual void resetContext(); 39 40 // Helpers to make code more readable getHWSamplerMatrix(int stage)41 const GrMatrix& getHWSamplerMatrix(int stage) const { 42 return fHWDrawState.fSamplerStates[stage].getMatrix(); 43 } recordHWSamplerMatrix(int stage,const GrMatrix & matrix)44 void recordHWSamplerMatrix(int stage, const GrMatrix& matrix) { 45 fHWDrawState.fSamplerStates[stage].setMatrix(matrix); 46 } 47 48 // when the texture is GL_RGBA we set the GL_COMBINE texture 49 // environment rgb operand 0 to be GL_COLOR to modulate each incoming 50 // R,G, & B by the texture's R, G, & B. When the texture is alpha-only we 51 // set the operand to GL_ALPHA so that the incoming frag's R, G, &B are all 52 // modulated by the texture's A. 53 enum TextureEnvRGBOperands { 54 kAlpha_TextureEnvRGBOperand, 55 kColor_TextureEnvRGBOperand, 56 }; 57 TextureEnvRGBOperands fHWRGBOperand0[kNumStages]; 58 59 void flushProjectionMatrix(); 60 61 // are the currently bound vertex buffers/arrays laid 62 // out for text or other drawing. 63 bool fTextVerts; 64 65 // On GL we have to build the base vertex offset into the 66 // glVertexPointer/glTexCoordPointer/etc 67 int fBaseVertex; 68 69 typedef GrGpuGL INHERITED; 70 }; 71 72 #endif 73