Adds local coords to GrEffect system.

include/gpu/GrEffectStage.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 40 matching lines @@
         GrSafeAssign(fEffectRef, other.fEffectRef);
         if (NULL != fEffectRef) {
             fCoordChangeMatrix = other.fCoordChangeMatrix;
         }
         return *this;
     }
 
     /**
      * This is called when the coordinate system in which the geometry is specified will change.
      *
-     * @param matrix    The transformation from the old coord system to the new one.
+     * @param matrix    The transformation from the old coord system in which geometry is specified
+     *                  to the new one from which it will actually be drawn.
      */
-    void preConcatCoordChange(const SkMatrix& matrix) { fCoordChangeMatrix.preConcat(matrix); }
+    void localCoordChange(const SkMatrix& matrix) { fCoordChangeMatrix.preConcat(matrix); }
 
     class SavedCoordChange {
     private:
         SkMatrix fCoordChangeMatrix;
         GR_DEBUGCODE(mutable SkAutoTUnref<const GrEffectRef> fEffectRef;)
 
         friend class GrEffectStage;
     };
 
     /**
      * This gets the current coordinate system change. It is the accumulation of
-     * preConcatCoordChange calls since the effect was installed. It is used when then caller
+     * localCoordChange calls since the effect was installed. It is used when then caller
      * wants to temporarily change the source geometry coord system, draw something, and then
      * restore the previous coord system (e.g. temporarily draw in device coords).
      */
     void saveCoordChange(SavedCoordChange* savedCoordChange) const {
         savedCoordChange->fCoordChangeMatrix = fCoordChangeMatrix;
         GrAssert(NULL == savedCoordChange->fEffectRef.get());
         GR_DEBUGCODE(GrSafeRef(fEffectRef);)
         GR_DEBUGCODE(savedCoordChange->fEffectRef.reset(fEffectRef);)
         GR_DEBUGCODE(++fSavedCoordChangeCnt);
     }
@@ skipping 116 matching lines @@
 
 private:
     SkMatrix                fCoordChangeMatrix;
     const GrEffectRef*      fEffectRef;
     int                     fVertexAttribIndices[2];
 
     GR_DEBUGCODE(mutable int fSavedCoordChangeCnt;)
 };
 
 #endif