/// @name Stage Output Types
////
+ enum PrimaryOutputType {
+ // Modulate color and coverage, write result as the color output.
+ kModulate_PrimaryOutputType,
+ // Combines the coverage, dst, and color as coverage * color + (1 - coverage) * dst. This
+ // can only be set if fDstReadKey is non-zero.
+ kCombineWithDst_PrimaryOutputType,
+ };
+
enum SecondaryOutputType {
// There is no secondary output
kNone_SecondaryOutputType,
kSecondaryOutputTypeCnt,
};
+ PrimaryOutputType primaryOutputType() const { return fPrimaryOutputType; }
SecondaryOutputType secondaryOutputType() const { return fSecondaryOutputType; }
GrXferProcessor::OptFlags getOptimizations(const GrProcOptInfo& colorPOI,
if (fSrcBlend != xp.fSrcBlend ||
fDstBlend != xp.fDstBlend ||
fBlendConstant != xp.fBlendConstant ||
+ fPrimaryOutputType != xp.fPrimaryOutputType ||
fSecondaryOutputType != xp.fSecondaryOutputType) {
return false;
}
GrBlendCoeff fSrcBlend;
GrBlendCoeff fDstBlend;
GrColor fBlendConstant;
+ PrimaryOutputType fPrimaryOutputType;
SecondaryOutputType fSecondaryOutputType;
typedef GrXferProcessor INHERITED;
fsBuilder->codeAppendf("%s = %s * %s;", args.fOutputPrimary, args.fInputColor,
args.fInputCoverage);
+ if (GrPorterDuffXferProcessor::kCombineWithDst_PrimaryOutputType == xp.primaryOutputType()){
+ fsBuilder->codeAppendf("%s += (vec4(1.0) - %s) * %s;", args.fOutputPrimary,
+ args.fInputCoverage, fsBuilder->dstColor());
+ }
}
virtual void setData(const GrGLProgramDataManager&, const GrXferProcessor&) SK_OVERRIDE {};
static void GenKey(const GrProcessor& processor, const GrGLCaps& caps,
GrProcessorKeyBuilder* b) {
const GrPorterDuffXferProcessor& xp = processor.cast<GrPorterDuffXferProcessor>();
+ b->add32(xp.primaryOutputType());
b->add32(xp.secondaryOutputType());
};
: fSrcBlend(srcBlend)
, fDstBlend(dstBlend)
, fBlendConstant(constant)
+ , fPrimaryOutputType(kModulate_PrimaryOutputType)
, fSecondaryOutputType(kNone_SecondaryOutputType) {
this->initClassID<GrPorterDuffXferProcessor>();
}
fSecondaryOutputType = kCoverageISC_SecondaryOutputType;
fDstBlend = (GrBlendCoeff)GrGpu::kIS2C_GrBlendCoeff;
}
+ } else if (readsDst &&
+ kOne_GrBlendCoeff == fSrcBlend &&
+ kZero_GrBlendCoeff == fDstBlend) {
+ fPrimaryOutputType = kCombineWithDst_PrimaryOutputType;
}
}
}