Introduce GrColorSpaceXform, for gamut conversion on textures

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 795 matching lines @@
         }
     }
 
     return blurProfile;
 }
 
 GrRectBlurEffect::GrRectBlurEffect(const SkRect& rect, float sigma, GrTexture *blurProfile,
                                    GrSLPrecision precision)
     : fRect(rect)
     , fSigma(sigma)
-    , fBlurProfileAccess(blurProfile)
+    , fBlurProfileAccess(blurProfile, nullptr)
     , fPrecision(precision) {
     this->initClassID<GrRectBlurEffect>();
     this->addTextureAccess(&fBlurProfileAccess);
     this->setWillReadFragmentPosition();
 }
 
 void GrRectBlurEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
                                              GrProcessorKeyBuilder* b) const {
     GrGLRectBlurEffect::GenKey(*this, caps, b);
 }
@@ skipping 189 matching lines @@
     return sk_sp<GrFragmentProcessor>(new GrRRectBlurEffect(sigma, rrect, blurNinePatchTexture));
 }
 
 void GrRRectBlurEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     inout->mulByUnknownSingleComponent();
 }
 
 GrRRectBlurEffect::GrRRectBlurEffect(float sigma, const SkRRect& rrect, GrTexture *ninePatchTexture)
     : fRRect(rrect),
       fSigma(sigma),
-      fNinePatchAccess(ninePatchTexture) {
+      fNinePatchAccess(ninePatchTexture, nullptr) {
     this->initClassID<GrRRectBlurEffect>();
     this->addTextureAccess(&fNinePatchAccess);
     this->setWillReadFragmentPosition();
 }
 
 bool GrRRectBlurEffect::onIsEqual(const GrFragmentProcessor& other) const {
     const GrRRectBlurEffect& rrbe = other.cast<GrRRectBlurEffect>();
     return fRRect.getSimpleRadii().fX == rrbe.fRRect.getSimpleRadii().fX &&
            fSigma == rrbe.fSigma &&
            fRRect.rect() == rrbe.fRRect.rect();
@@ skipping 216 matching lines @@
                                                                   xformedSigma, xformedSigma));
     if (!drawContext) {
         return false;
     }
 
     if (!isNormalBlur) {
         GrPaint paint;
         SkMatrix matrix;
         matrix.setIDiv(src->width(), src->height());
         // Blend pathTexture over blurTexture.
-        paint.addCoverageFragmentProcessor(GrSimpleTextureEffect::Make(src, matrix));
+        paint.addCoverageFragmentProcessor(GrSimpleTextureEffect::Make(src, nullptr, matrix));
         if (kInner_SkBlurStyle == fBlurStyle) {
             // inner:  dst = dst * src
             paint.setCoverageSetOpXPFactory(SkRegion::kIntersect_Op);
         } else if (kSolid_SkBlurStyle == fBlurStyle) {
             // solid:  dst = src + dst - src * dst
             //             = src + (1 - src) * dst
             paint.setCoverageSetOpXPFactory(SkRegion::kUnion_Op);
         } else if (kOuter_SkBlurStyle == fBlurStyle) {
             // outer:  dst = dst * (1 - src)
             //             = 0 * src + (1 - src) * dst
@@ skipping 37 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