Fix up flags to SkGpuBlurUtils::GaussianBlur

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 49 matching lines @@
     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 SkIRect& maskRect,
-                       GrTexture** result,
-                       bool canOverwriteSrc) const override;
+                       GrTexture** result) 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)
 
 protected:
     FilterReturn filterRectsToNine(const SkRect[], int count, const SkMatrix&,
@@ skipping 1146 matching lines @@
     if (!srcRect.intersect(clipRect)) {
         srcRect.setEmpty();
     }
     *maskRect = srcRect;
     return true;
 }
 
 bool SkBlurMaskFilterImpl::filterMaskGPU(GrTexture* src,
                                          const SkMatrix& ctm,
                                          const SkIRect& maskRect,
-                                         GrTexture** result,
-                                         bool canOverwriteSrc) const {
+                                         GrTexture** result) const {
     // '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.
+    static const bool kIsGammaCorrect = false;
     bool isNormalBlur = (kNormal_SkBlurStyle == fBlurStyle);
     sk_sp<GrDrawContext> drawContext(SkGpuBlurUtils::GaussianBlur(context, src,
-                                                                  isNormalBlur && canOverwriteSrc,
+                                                                  kIsGammaCorrect,
                                                                   clipRect, nullptr,
                                                                   xformedSigma, xformedSigma));
     if (!drawContext) {
         return false;
     }
 
     if (!isNormalBlur) {
         GrPaint paint;
         SkMatrix matrix;
         matrix.setIDiv(src->width(), src->height());
@@ skipping 49 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