plumbing for GPU fast blur

include/core/SkMaskFilter.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkMaskFilter_DEFINED
@@ skipping 83 matching lines @@
                                   SkRect* maskRect) const;
 
     /**
      *  Try to directly render the mask filter into the target.  Returns
      *  true if drawing was successful.
      */
     virtual bool directFilterMaskGPU(GrContext* context,
                                      GrPaint* grp,
                                      const SkStrokeRec& strokeRec,
                                      const SkPath& path) const;
+    /**
+     *  Try to directly render a rounded rect mask filter into the target.  Returns
+     *  true if drawing was successful.
+     */
+    virtual bool directFilterRRectMaskGPU(GrContext* context,
+                                          GrPaint* grp,
+                                          const SkStrokeRec& strokeRec,
+                                          const SkRRect& rrect) const;
 
     /**
      * This function is used to implement filters that require an explicit src mask. It should only
      * be called if canFilterMaskGPU returned true and the maskRect param should be the output from
      * that call. canOverwriteSrc indicates whether the implementation may treat src as a scratch
      * texture and overwrite its contents. When true it is also legal to return src as the result.
      * Implementations are free to get the GrContext from the src texture in order to create
      * additional textures and perform multiple passes.
      */
     virtual bool filterMaskGPU(GrTexture* src,
@@ skipping 79 matching lines @@
      to render that mask. Returns false if filterMask() returned false.
      */
     bool filterRRect(const SkRRect& devRRect, const SkMatrix& devMatrix,
                      const SkRasterClip&, SkBounder*, SkBlitter* blitter,
                      SkPaint::Style style) const;
 
     typedef SkFlattenable INHERITED;
 };
 
 #endif