Implement NVPR on GLES

src/gpu/gl/GrGLProgramEffects.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLProgramEffects_DEFINED
 #define GrGLProgramEffects_DEFINED
 
 #include "GrBackendEffectFactory.h"
 #include "GrGLProgramDataManager.h"
+#include "GrGpu.h"
 #include "GrTexture.h"
 #include "GrTextureAccess.h"
 
 class GrEffect;
 class GrEffectStage;
 class GrGLVertexProgramEffectsBuilder;
 class GrGLShaderBuilder;
 class GrGLFullShaderBuilder;
 class GrGLFragmentOnlyShaderBuilder;
 
 /**
  * This class encapsulates an array of GrGLEffects and their supporting data (coord transforms
  * and textures). It is built with GrGLProgramEffectsBuilder, then used to manage the necessary GL
  * state and shader uniforms.
  */
 class GrGLProgramEffects : public SkRefCnt {
 public:
     typedef GrGLProgramDataManager::UniformHandle UniformHandle;
+    typedef GrGLProgramDataManager::VaryingHandle VaryingHandle;
 
     /**
      * This class emits some of the code inserted into the shaders for an effect. The code it
      * creates may be dependent on properties of the effect that the effect itself doesn't use
      * in its key (e.g. the pixel format of textures used). So this class inserts a meta-key for
      * every effect using this function. It is also responsible for inserting the effect's class ID
      * which must be different for every GrEffect subclass. It can fail if an effect uses too many
      * textures, attributes, etc for the space allotted in the meta-key.
      */
     static bool GenEffectMetaKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuilder*);
 
     virtual ~GrGLProgramEffects();
 
     /**
      * Assigns a texture unit to each sampler. It starts on *texUnitIdx and writes the next
      * available unit to *texUnitIdx when it returns.
      */
     void initSamplers(const GrGLProgramDataManager&, int* texUnitIdx);
 
     /**
      * Calls setData() on each effect, and sets their transformation matrices and texture bindings.
      */
     virtual void setData(GrGpuGL*,
+                         GrGpu::DrawType,
                          const GrGLProgramDataManager&,
                          const GrEffectStage* effectStages[]) = 0;
 
     /**
      * Passed to GrGLEffects so they can add transformed coordinates to their shader code.
      */
     class TransformedCoords {
     public:
         TransformedCoords(const SkString& name, GrSLType type)
             : fName(name), fType(type) {
@@ skipping 91 matching lines @@
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 
 /**
  * This is a GrGLProgramEffects implementation that does coord transforms with the vertex shader.
  */
 class GrGLVertexProgramEffects : public GrGLProgramEffects {
 public:
     virtual void setData(GrGpuGL*,
+                         GrGpu::DrawType,
                          const GrGLProgramDataManager&,
                          const GrEffectStage* effectStages[]) SK_OVERRIDE;
 
 private:
     friend class GrGLVertexProgramEffectsBuilder;
 
     GrGLVertexProgramEffects(int reserveCount, bool explicitLocalCoords)
         : INHERITED(reserveCount)
         , fTransforms(reserveCount)
         , fHasExplicitLocalCoords(explicitLocalCoords) {
@@ skipping 22 matching lines @@
      * of the varyings in the VS and FS as well their types are appended to the
      * TransformedCoordsArray* object, which is in turn passed to the effect's emitCode() function.
      */
     void emitTransforms(GrGLFullShaderBuilder*,
                         const GrDrawEffect&,
                         TransformedCoordsArray*);
 
     /**
      * Helper for setData(). Sets all the transform matrices for an effect.
      */
-    void setTransformData(const GrGLProgramDataManager&, const GrDrawEffect&, int effectIdx);
+    void setTransformData(GrGpuGL* gpu, const GrGLProgramDataManager&, const GrDrawEffect&, int effectIdx);
+    void setPathTransformData(GrGpuGL* gpu, const GrGLProgramDataManager&, const GrDrawEffect&,
+                              int effectIdx);
 
     struct Transform {
         Transform() { fCurrentValue = SkMatrix::InvalidMatrix(); }
         UniformHandle fHandle;
         SkMatrix      fCurrentValue;
     };
 
+    struct PathTransform {
+        PathTransform() { fCurrentValue = SkMatrix::InvalidMatrix(); }
+        VaryingHandle fHandle;
+        SkMatrix fCurrentValue;
+        GrSLType fType;
+    };
+
     SkTArray<SkSTArray<2, Transform, true> > fTransforms;
+    SkTArray<SkTArray<PathTransform, true> > fPathTransforms;
     bool                                     fHasExplicitLocalCoords;
 
     typedef GrGLProgramEffects INHERITED;
 };
 
 /**
  * This class is used to construct a GrGLVertexProgramEffects* object.
  */
 class GrGLVertexProgramEffectsBuilder : public GrGLProgramEffectsBuilder {
 public:
@@ skipping 21 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
 /**
  * This is a GrGLProgramEffects implementation that does coord transforms with
  * the the  NV_path_rendering PathTexGen functionality.
  */
 class GrGLPathTexGenProgramEffects : public GrGLProgramEffects {
 public:
     virtual void setData(GrGpuGL*,
+                         GrGpu::DrawType,
                          const GrGLProgramDataManager&,
                          const GrEffectStage* effectStages[]) SK_OVERRIDE;
 
 private:
     friend class GrGLPathTexGenProgramEffectsBuilder;
 
     GrGLPathTexGenProgramEffects(int reserveCount)
         : INHERITED(reserveCount)
         , fTransforms(reserveCount) {
     }
@@ skipping 59 matching lines @@
     GrGLProgramEffects* finish() { return fProgramEffects.detach(); }
 
 private:
     GrGLFragmentOnlyShaderBuilder*          fBuilder;
     SkAutoTDelete<GrGLPathTexGenProgramEffects> fProgramEffects;
 
     typedef GrGLProgramEffectsBuilder INHERITED;
 };
 
 #endif