Implement texel buffers

src/gpu/gl/GrGLProgram.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLProgram_DEFINED
 #define GrGLProgram_DEFINED
@@ skipping 76 matching lines @@
             }
         }
     };
 
     /**
      * This function uploads uniforms, calls each GrGL*Processor's setData, and retrieves the
      * textures that need to be bound on each unit. It is the caller's responsibility to ensure
      * the program is bound before calling, and to bind the outgoing textures to their respective
      * units upon return. (Each index in the array corresponds to its matching GL texture unit.)
      */
-    void setData(const GrPrimitiveProcessor&, const GrPipeline&,
-                 SkTArray<const GrTextureAccess*>* textureBindings);
+    void setData(const GrPrimitiveProcessor&, const GrPipeline&);
 
 protected:
     typedef GrGLSLProgramDataManager::UniformHandle UniformHandle;
     typedef GrGLProgramDataManager::UniformInfoArray UniformInfoArray;
     typedef GrGLProgramDataManager::VaryingInfoArray VaryingInfoArray;
 
     GrGLProgram(GrGLGpu*,
                 const GrProgramDesc&,
                 const BuiltinUniformHandles&,
                 GrGLuint programID,
                 const UniformInfoArray&,
                 const VaryingInfoArray&, // used for NVPR only currently
                 GrGLSLPrimitiveProcessor* geometryProcessor,
                 GrGLSLXferProcessor* xferProcessor,
                 const GrGLSLFragProcs& fragmentProcessors,
                 SkTArray<UniformHandle>* passSamplerUniforms);
 
-    // A templated helper to loop over effects, set the transforms(via subclass) and bind textures
-    void setFragmentData(const GrPrimitiveProcessor&, const GrPipeline&,
-                         SkTArray<const GrTextureAccess*>* textureBindings);
-    void setTransformData(const GrPrimitiveProcessor&,
-                          const GrFragmentProcessor&,
-                          int index);
+    // A helper to loop over effects, set the transforms (via subclass) and bind textures
+    void setFragmentData(const GrPrimitiveProcessor&, const GrPipeline&, int* nextSamplerIdx);
+    void setTransformData(const GrPrimitiveProcessor&, const GrFragmentProcessor&, int index);
 
     // Helper for setData() that sets the view matrix and loads the render target height uniform
     void setRenderTargetState(const GrPrimitiveProcessor&, const GrPipeline&);
 
+    // Helper for setData() that binds textures and texel buffers to the appropriate texture units
+    void bindTextures(const GrProcessor&, bool allowSRGBInputs, int* nextSamplerIdx);
+
     // these reflect the current values of uniforms (GL uniform values travel with program)
     RenderTargetState fRenderTargetState;
     BuiltinUniformHandles fBuiltinUniformHandles;
     GrGLuint fProgramID;
 
     // the installed effects
     SkAutoTDelete<GrGLSLPrimitiveProcessor> fGeometryProcessor;
     SkAutoTDelete<GrGLSLXferProcessor> fXferProcessor;
     GrGLSLFragProcs fFragmentProcessors;
 
     GrProgramDesc fDesc;
     GrGLGpu* fGpu;
     GrGLProgramDataManager fProgramDataManager;
     SkTArray<UniformHandle> fSamplerUniforms;
 
     friend class GrGLProgramBuilder;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif