Make GPU coord transforms automatic

src/gpu/effects/GrSingleTextureEffect.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSingleTextureEffect_DEFINED
 #define GrSingleTextureEffect_DEFINED
 
 #include "GrEffect.h"
 #include "SkMatrix.h"
+#include "GrCoordTransform.h"
 
 class GrTexture;
 
 /**
  * A base class for effects that draw a single texture with a texture matrix. This effect has no
  * backend implementations. One must be provided by the subclass.
  */
 class GrSingleTextureEffect : public GrEffect {
 public:
     virtual ~GrSingleTextureEffect();
 
-    const SkMatrix& getMatrix() const { return fMatrix; }
-
-    /** Indicates whether the matrix operates on local coords or positions */
-    CoordsType coordsType() const { return fCoordsType; }
-
 protected:
     /** unfiltered, clamp mode */
-    GrSingleTextureEffect(GrTexture*, const SkMatrix&, CoordsType = kLocal_CoordsType);
+    GrSingleTextureEffect(GrTexture*, const SkMatrix&, GrCoordSet = kLocal_GrCoordSet);
     /** clamp mode */
     GrSingleTextureEffect(GrTexture*, const SkMatrix&, GrTextureParams::FilterMode filterMode,
-                          CoordsType = kLocal_CoordsType);
+                          GrCoordSet = kLocal_GrCoordSet);
     GrSingleTextureEffect(GrTexture*,
                           const SkMatrix&,
                           const GrTextureParams&,
-                          CoordsType = kLocal_CoordsType);
+                          GrCoordSet = kLocal_GrCoordSet);
 
     /**
      * Helper for subclass onIsEqual() functions.
      */
-    bool hasSameTextureParamsMatrixAndCoordsType(const GrSingleTextureEffect& other) const {
+    bool hasSameTextureParamsMatrixAndSourceCoords(const GrSingleTextureEffect& other) const {
         // We don't have to check the accesses' swizzles because they are inferred from the texture.
         return fTextureAccess == other.fTextureAccess &&
-               this->getMatrix().cheapEqualTo(other.getMatrix()) &&
-               fCoordsType == other.fCoordsType;
+               fCoordTransform.getMatrix().cheapEqualTo(other.fCoordTransform.getMatrix()) &&
+               fCoordTransform.sourceCoords() == other.fCoordTransform.sourceCoords();
     }
 
     /**
      * Can be used as a helper to implement subclass getConstantColorComponents(). It assumes that
      * the subclass output color will be a modulation of the input color with a value read from the
      * texture.
      */
     void updateConstantColorComponentsForModulation(GrColor* color, uint32_t* validFlags) const {
         if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
             GrPixelConfigIsOpaque(this->texture(0)->config())) {
             *validFlags = kA_GrColorComponentFlag;
         } else {
             *validFlags = 0;
         }
     }
 
 private:
-    GrTextureAccess fTextureAccess;
-    SkMatrix        fMatrix;
-    CoordsType      fCoordsType;
+    GrCoordTransform fCoordTransform;
+    GrTextureAccess  fTextureAccess;
 
     typedef GrEffect INHERITED;
 };
 
 #endif