Line data    Source code

       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           0 : 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);
      34           0 :     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