Revamp filter primitive region calculations for Filter Effects

third_party/WebKit/Source/platform/graphics/filters/FETurbulence.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Renata Hodovan <reni@inf.u-szeged.hu>
  * Copyright (C) 2011 Gabor Loki <loki@webkit.org>
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 110 matching lines @@
 bool FETurbulence::setStitchTiles(bool stitch)
 {
     if (m_stitchTiles == stitch)
         return false;
     m_stitchTiles = stitch;
     return true;
 }
 
 sk_sp<SkShader> FETurbulence::createShader() const
 {
-    const SkISize size = SkISize::Make(effectBoundaries().width(), effectBoundaries().height());
+    const SkISize size = SkISize::Make(
+        filterPrimitiveSubregion().width(),
+        filterPrimitiveSubregion().height());
     // Frequency should be scaled by page zoom, but not by primitiveUnits.
     // So we apply only the transform scale (as Filter::apply*Scale() do)
     // and not the target bounding box scale (as SVGFilter::apply*Scale()
     // would do). Note also that we divide by the scale since this is
     // a frequency, not a period.
     float baseFrequencyX = m_baseFrequencyX / getFilter()->scale();
     float baseFrequencyY = m_baseFrequencyY / getFilter()->scale();
     return (type() == FETURBULENCE_TYPE_FRACTALNOISE) ?
         SkPerlinNoiseShader::MakeFractalNoise(SkFloatToScalar(baseFrequencyX),
             SkFloatToScalar(baseFrequencyY), numOctaves(), SkFloatToScalar(seed()),
@@ skipping 37 matching lines @@
     FilterEffect::externalRepresentation(ts);
     ts << " type=\"" << type() << "\" "
        << "baseFrequency=\"" << baseFrequencyX() << ", " << baseFrequencyY() << "\" "
        << "seed=\"" << seed() << "\" "
        << "numOctaves=\"" << numOctaves() << "\" "
        << "stitchTiles=\"" << stitchTiles() << "\"]\n";
     return ts;
 }
 
 } // namespace blink