plumbing for GPU fast blur

src/effects/SkBlurMaskFilter.cpp

 
 /*
  * 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.
  */
 
 #include "SkBlurMaskFilter.h"
 #include "SkBlurMask.h"
@@ skipping 27 matching lines @@
 
 #if SK_SUPPORT_GPU
     virtual bool canFilterMaskGPU(const SkRect& devBounds,
                                   const SkIRect& clipBounds,
                                   const SkMatrix& ctm,
                                   SkRect* maskRect) const SK_OVERRIDE;
     virtual bool directFilterMaskGPU(GrContext* context,
                                      GrPaint* grp,
                                      const SkStrokeRec& strokeRec,
                                      const SkPath& path) const SK_OVERRIDE;
+    virtual bool directFilterRRectMaskGPU(GrContext* context,
+                                          GrPaint* grp,
+                                          const SkStrokeRec& strokeRec,
+                                          const SkRRect& rrect) const SK_OVERRIDE;
 
     virtual bool filterMaskGPU(GrTexture* src,
                                const SkMatrix& ctm,
                                const SkRect& maskRect,
                                GrTexture** result,
                                bool canOverwriteSrc) const SK_OVERRIDE;
 #endif
 
     virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE;
 
@@ skipping 754 matching lines @@
        return false;
     }
 
 
     grp->addCoverageEffect(effect);
 
     context->drawRect(*grp, rect);
     return true;
 }
 
+bool SkBlurMaskFilterImpl::directFilterRRectMaskGPU(GrContext* context,
+                                                    GrPaint* grp,
+                                                    const SkStrokeRec& strokeRec,
+                                                    const SkRRect& rrect) const {
+    return false;
+}
+
 bool SkBlurMaskFilterImpl::canFilterMaskGPU(const SkRect& srcBounds,
                                             const SkIRect& clipBounds,
                                             const SkMatrix& ctm,
                                             SkRect* maskRect) const {
     SkScalar xformedSigma = this->computeXformedSigma(ctm);
     if (xformedSigma <= 0) {
         return false;
     }
 
     static const SkScalar kMIN_GPU_BLUR_SIZE  = SkIntToScalar(64);
@@ skipping 101 matching lines @@
     } else {
         str->append("None");
     }
     str->append("))");
 }
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkBlurMaskFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkBlurMaskFilterImpl)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END