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Make SkPixelXorXfermode's opColor be SkPMColor

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Xoring an SkColor with 2 SkPMColors creates rendering inconsistencies on Macs and some Android devices in 8888.

AFAICT Android doesn't compensate for this so we may be changing SkPixelXorXfermode's behavior on Android.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1646453003

Review URL: https://codereview.chromium.org/1646453003
This commit is contained in:
robertphillips 2016-01-28 06:41:11 -08:00 committed by Commit bot
parent b35c82dc94
commit 98124ef2f9
2 changed files with 24 additions and 22 deletions
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6
include/effects/SkPixelXorXfermode.h
View File

@ -36,9 +36,11 @@ protected:
SkPMColor xferColor(SkPMColor src, SkPMColor dst) const override;
private:
explicit SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {}
explicit SkPixelXorXfermode(SkColor opColor) {
fOpColor = SkPreMultiplyColor(opColor | 0xFF000000);
}
SkColor fOpColor;
SkPMColor fOpColor;
typedef SkXfermode INHERITED;
};

36
src/effects/SkPixelXorXfermode.cpp
View File

@ -120,7 +120,7 @@ class GLPixelXorFP;
class PixelXorFP : public GrFragmentProcessor {
public:
static const GrFragmentProcessor* Create(SkColor opColor, const GrFragmentProcessor* dst) {
static const GrFragmentProcessor* Create(SkPMColor opColor, const GrFragmentProcessor* dst) {
return new PixelXorFP(opColor, dst);
}
@ -134,7 +134,7 @@ public:
return str;
}
SkColor opColor() const { return fOpColor; }
SkPMColor opColor() const { return fOpColor; }
private:
GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
@ -150,7 +150,7 @@ private:
inout->setToUnknown(GrInvariantOutput::kWill_ReadInput);
}
PixelXorFP(SkColor opColor, const GrFragmentProcessor* dst)
PixelXorFP(SkPMColor opColor, const GrFragmentProcessor* dst)
: fOpColor(opColor) {
this->initClassID<PixelXorFP>();
@ -159,7 +159,7 @@ private:
SkASSERT(0 == dstIndex);
}
SkColor fOpColor;
SkPMColor fOpColor;
GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
typedef GrFragmentProcessor INHERITED;
@ -193,9 +193,9 @@ protected:
void onSetData(const GrGLSLProgramDataManager& pdman, const GrProcessor& proc) override {
const PixelXorFP& pixXor = proc.cast<PixelXorFP>();
pdman.set3f(fOpColorUni,
SkColorGetR(pixXor.opColor())/255.0f,
SkColorGetG(pixXor.opColor())/255.0f,
SkColorGetB(pixXor.opColor())/255.0f);
SkGetPackedR32(pixXor.opColor())/255.0f,
SkGetPackedG32(pixXor.opColor())/255.0f,
SkGetPackedB32(pixXor.opColor())/255.0f);
}
private:
@ -218,7 +218,7 @@ const GrFragmentProcessor* PixelXorFP::TestCreate(GrProcessorTestData* d) {
SkColor color = d->fRandom->nextU();
SkAutoTUnref<const GrFragmentProcessor> dst(GrProcessorUnitTest::CreateChildFP(d));
return new PixelXorFP(color, dst);
return new PixelXorFP(SkPreMultiplyColor(color), dst);
}
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(PixelXorFP);
@ -229,7 +229,7 @@ GR_DEFINE_FRAGMENT_PROCESSOR_TEST(PixelXorFP);
class PixelXorXP : public GrXferProcessor {
public:
PixelXorXP(const DstTexture* dstTexture, bool hasMixedSamples, SkColor opColor)
PixelXorXP(const DstTexture* dstTexture, bool hasMixedSamples, SkPMColor opColor)
: INHERITED(dstTexture, true, hasMixedSamples)
, fOpColor(opColor) {
this->initClassID<PixelXorXP>();
@ -239,7 +239,7 @@ public:
GrGLSLXferProcessor* createGLSLInstance() const override;
SkColor opColor() const { return fOpColor; }
SkPMColor opColor() const { return fOpColor; }
private:
GrXferProcessor::OptFlags onGetOptimizations(const GrPipelineOptimizations& optimizations,
@ -257,7 +257,7 @@ private:
return fOpColor == xp.fOpColor;
}
SkColor fOpColor;
SkPMColor fOpColor;
typedef GrXferProcessor INHERITED;
};
@ -297,9 +297,9 @@ private:
const GrXferProcessor& processor) override {
const PixelXorXP& pixelXor = processor.cast<PixelXorXP>();
pdman.set3f(fOpColorUni,
SkColorGetR(pixelXor.opColor())/255.0f,
SkColorGetG(pixelXor.opColor())/255.0f,
SkColorGetB(pixelXor.opColor())/255.0f);
SkGetPackedR32(pixelXor.opColor())/255.0f,
SkGetPackedG32(pixelXor.opColor())/255.0f,
SkGetPackedB32(pixelXor.opColor())/255.0f);
};
GrGLSLProgramDataManager::UniformHandle fOpColorUni;
@ -319,7 +319,7 @@ GrGLSLXferProcessor* PixelXorXP::createGLSLInstance() const { return new GLPixel
class GrPixelXorXPFactory : public GrXPFactory {
public:
static GrXPFactory* Create(SkColor opColor) {
static GrXPFactory* Create(SkPMColor opColor) {
return new GrPixelXorXPFactory(opColor);
}
@ -330,7 +330,7 @@ public:
}
private:
GrPixelXorXPFactory(SkColor opColor)
GrPixelXorXPFactory(SkPMColor opColor)
: fOpColor(opColor) {
this->initClassID<GrPixelXorXPFactory>();
}
@ -355,7 +355,7 @@ private:
GR_DECLARE_XP_FACTORY_TEST;
SkColor fOpColor;
SkPMColor fOpColor;
typedef GrXPFactory INHERITED;
};
@ -365,7 +365,7 @@ GR_DEFINE_XP_FACTORY_TEST(GrPixelXorXPFactory);
const GrXPFactory* GrPixelXorXPFactory::TestCreate(GrProcessorTestData* d) {
SkColor color = d->fRandom->nextU();
return GrPixelXorXPFactory::Create(color);
return GrPixelXorXPFactory::Create(SkPreMultiplyColor(color));
}
///////////////////////////////////////////////////////////////////////////////