Swap SkGpuBlurUtils over to using SkIRects

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"
 #include "SkGpuBlurUtils.h"
@@ skipping 48 matching lines @@
                              const SkPath& path) const override;
     bool directFilterRRectMaskGPU(GrTextureProvider* texProvider,
                                   GrDrawContext* drawContext,
                                   GrPaint* grp,
                                   const GrClip&,
                                   const SkMatrix& viewMatrix,
                                   const SkStrokeRec& strokeRec,
                                   const SkRRect& rrect) const override;
     bool filterMaskGPU(GrTexture* src,
                        const SkMatrix& ctm,
-                       const SkRect& maskRect,
+                       const SkIRect& maskRect,
                        GrTexture** result,
                        bool canOverwriteSrc) const override;
 #endif
 
     void computeFastBounds(const SkRect&, SkRect*) const override;
     bool asABlur(BlurRec*) const override;
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurMaskFilterImpl)
 
@@ skipping 1148 matching lines @@
     clipRect.outset(sigma3, sigma3);
     if (!srcRect.intersect(clipRect)) {
         srcRect.setEmpty();
     }
     *maskRect = srcRect;
     return true;
 }
 
 bool SkBlurMaskFilterImpl::filterMaskGPU(GrTexture* src,
                                          const SkMatrix& ctm,
-                                         const SkRect& maskRect,
+                                         const SkIRect& maskRect,
                                          GrTexture** result,
                                          bool canOverwriteSrc) const {
-    SkRect clipRect = SkRect::MakeWH(maskRect.width(), maskRect.height());
+    // 'maskRect' isn't snapped to the UL corner but the mask in 'src' is.
+    const SkIRect clipRect = SkIRect::MakeWH(maskRect.width(), maskRect.height());
 
     GrContext* context = src->getContext();
 
     SkScalar xformedSigma = this->computeXformedSigma(ctm);
     SkASSERT(xformedSigma > 0);
 
     // If we're doing a normal blur, we can clobber the pathTexture in the
     // gaussianBlur.  Otherwise, we need to save it for later compositing.
     bool isNormalBlur = (kNormal_SkBlurStyle == fBlurStyle);
     sk_sp<GrDrawContext> drawContext(SkGpuBlurUtils::GaussianBlur(context, src,
@@ skipping 18 matching lines @@
             //             = src + (1 - src) * dst
             paint.setCoverageSetOpXPFactory(SkRegion::kUnion_Op);
         } else if (kOuter_SkBlurStyle == fBlurStyle) {
             // outer:  dst = dst * (1 - src)
             //             = 0 * src + (1 - src) * dst
             paint.setCoverageSetOpXPFactory(SkRegion::kDifference_Op);
         } else {
             paint.setCoverageSetOpXPFactory(SkRegion::kReplace_Op);
         }
 
-        drawContext->drawRect(GrClip::WideOpen(), paint, SkMatrix::I(), clipRect);
+        drawContext->drawRect(GrClip::WideOpen(), paint, SkMatrix::I(), SkRect::Make(clipRect));
     }
 
     *result = drawContext->asTexture().release();
     return true;
 }
 
 #endif // SK_SUPPORT_GPU
 
 
 #ifndef SK_IGNORE_TO_STRING
@@ skipping 21 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