First pass at Rect Effect

include/gpu/GrAARectRenderer.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 GrAARectRenderer_DEFINED
 #define GrAARectRenderer_DEFINED
 
 #include "GrRect.h"
 #include "GrRefCnt.h"
 
 class GrGpu;
 class GrDrawTarget;
 class GrIndexBuffer;
+class SkMatrix;
 
 /*
  * This class wraps helper functions that draw AA rects (filled & stroked)
  */
 class GrAARectRenderer : public GrRefCnt {
 public:
     SK_DECLARE_INST_COUNT(GrAARectRenderer)
 
     GrAARectRenderer()
     : fAAFillRectIndexBuffer(NULL)
     , fAAStrokeRectIndexBuffer(NULL) {
     }
 
     void reset();
 
     ~GrAARectRenderer() {
         this->reset();
     }
 
     // TODO: potentialy fuse the fill & stroke methods and differentiate
-    // btween them by passing in strokeWidth (<0 means fill).
+    // between them by passing in strokeWidth (<0 means fill).
 
     // TODO: Remove the useVertexCoverage boolean. Just use it all the time
     // since we now have a coverage vertex attribute
     void fillAARect(GrGpu* gpu,
                     GrDrawTarget* target,
                     const GrRect& devRect,
                     bool useVertexCoverage);
 
+    void shaderFillAARect(GrGpu* gpu,
+                          GrDrawTarget* target,
+                          const GrRect& rect,
+                          const SkMatrix& combinedMatrix,
+                          const GrRect& devRect,
+                          bool useVertexCoverage);
+
     void strokeAARect(GrGpu* gpu,
                       GrDrawTarget* target,
                       const GrRect& devRect,
                       const GrVec& devStrokeSize,
                       bool useVertexCoverage);
 
 private:
     GrIndexBuffer*              fAAFillRectIndexBuffer;
     GrIndexBuffer*              fAAStrokeRectIndexBuffer;
 
     GrIndexBuffer* aaFillRectIndexBuffer(GrGpu* gpu);
 
     static int aaStrokeRectIndexCount();
     GrIndexBuffer* aaStrokeRectIndexBuffer(GrGpu* gpu);
 
     typedef GrRefCnt INHERITED;
 };
 
 #endif // GrAARectRenderer_DEFINED