1 /* 2 * Copyright 2014 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrGLSLGeometryShaderBuilder_DEFINED 9 #define GrGLSLGeometryShaderBuilder_DEFINED 10 11 #include "GrGLSLShaderBuilder.h" 12 13 class GrGLSLVarying; 14 15 class GrGLSLGeometryBuilder : public GrGLSLShaderBuilder { 16 public: 17 GrGLSLGeometryBuilder(GrGLSLProgramBuilder* program); 18 19 enum class InputType { 20 kPoints, 21 kLines, 22 kLinesAdjacency, 23 kTriangles, 24 kTrianglesAdjacency 25 }; 26 27 enum class OutputType { 28 kPoints, 29 kLineStrip, 30 kTriangleStrip 31 }; 32 33 void configure(InputType, OutputType, int maxVertices, int numInvocations = 1); isConfigured()34 bool isConfigured() const { return fNumInvocations; } 35 36 private: 37 void onFinalize() override; 38 39 int fNumInvocations; 40 41 friend class GrGLProgramBuilder; 42 43 typedef GrGLSLShaderBuilder INHERITED; 44 }; 45 46 #endif 47