bool GrPaint::getOpaqueAndKnownColor(GrColor* solidColor,
uint32_t* solidColorKnownComponents) const {
// TODO: Share this implementation with GrDrawState
GrProcessor::InvariantOutput inout;
inout.fColor = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
inout.fValidFlags = kRGBA_GrColorComponentFlags;
inout.fIsSingleComponent = false;
int count = fCoverageStages.count();
for (int i = 0; i < count; ++i) {
fCoverageStages[i].getProcessor()->computeInvariantOutput(&inout);
}
if (!inout.isSolidWhite()) {
return false;
}
inout.fColor = fColor;
inout.fValidFlags = kRGBA_GrColorComponentFlags;
inout.fIsSingleComponent = false;
count = fColorStages.count();
for (int i = 0; i < count; ++i) {
fColorStages[i].getProcessor()->computeInvariantOutput(&inout);
}
SkASSERT((NULL == solidColor) == (NULL == solidColorKnownComponents));
GrBlendCoeff srcCoeff = fSrcBlendCoeff;
GrBlendCoeff dstCoeff = fDstBlendCoeff;
GrSimplifyBlend(&srcCoeff, &dstCoeff, inout.fColor, inout.fValidFlags,
0, 0, 0);
bool opaque = kZero_GrBlendCoeff == dstCoeff && !GrBlendCoeffRefsDst(srcCoeff);
if (solidColor) {
if (opaque) {
switch (srcCoeff) {
case kZero_GrBlendCoeff:
*solidColor = 0;
*solidColorKnownComponents = kRGBA_GrColorComponentFlags;
break;
case kOne_GrBlendCoeff:
*solidColor = inout.fColor;
*solidColorKnownComponents = inout.fValidFlags;
break;
// The src coeff should never refer to the src and if it refers to dst then opaque
// should have been false.
case kSC_GrBlendCoeff:
case kISC_GrBlendCoeff:
case kDC_GrBlendCoeff:
case kIDC_GrBlendCoeff:
case kSA_GrBlendCoeff:
case kISA_GrBlendCoeff:
case kDA_GrBlendCoeff:
case kIDA_GrBlendCoeff:
default:
SkFAIL("srcCoeff should not refer to src or dst.");
break;
// TODO: update this once GrPaint actually has a const color.
case kConstC_GrBlendCoeff:
case kIConstC_GrBlendCoeff:
case kConstA_GrBlendCoeff:
case kIConstA_GrBlendCoeff:
*solidColorKnownComponents = 0;
break;
}
} else {
solidColorKnownComponents = 0;
}
}
return opaque;
}
bool GrPaint::getOpaqueAndKnownColor(GrColor* solidColor,
uint32_t* solidColorKnownComponents) const {
// TODO: Share this implementation with GrDrawState
GrColor coverage = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
uint32_t coverageComps = kRGBA_GrColorComponentFlags;
int count = fCoverageStages.count();
for (int i = 0; i < count; ++i) {
(*fCoverageStages[i].getEffect())->getConstantColorComponents(&coverage, &coverageComps);
}
if (kRGBA_GrColorComponentFlags != coverageComps || 0xffffffff != coverage) {
return false;
}
GrColor color = fColor;
uint32_t colorComps = kRGBA_GrColorComponentFlags;
count = fColorStages.count();
for (int i = 0; i < count; ++i) {
(*fColorStages[i].getEffect())->getConstantColorComponents(&color, &colorComps);
}
SkASSERT((NULL == solidColor) == (NULL == solidColorKnownComponents));
GrBlendCoeff srcCoeff = fSrcBlendCoeff;
GrBlendCoeff dstCoeff = fDstBlendCoeff;
GrSimplifyBlend(&srcCoeff, &dstCoeff, color, colorComps, 0, 0, 0);
bool opaque = kZero_GrBlendCoeff == dstCoeff && !GrBlendCoeffRefsDst(srcCoeff);
if (NULL != solidColor) {
if (opaque) {
switch (srcCoeff) {
case kZero_GrBlendCoeff:
*solidColor = 0;
*solidColorKnownComponents = kRGBA_GrColorComponentFlags;
break;
case kOne_GrBlendCoeff:
*solidColor = color;
*solidColorKnownComponents = colorComps;
break;
// The src coeff should never refer to the src and if it refers to dst then opaque
// should have been false.
case kSC_GrBlendCoeff:
case kISC_GrBlendCoeff:
case kDC_GrBlendCoeff:
case kIDC_GrBlendCoeff:
case kSA_GrBlendCoeff:
case kISA_GrBlendCoeff:
case kDA_GrBlendCoeff:
case kIDA_GrBlendCoeff:
default:
SkFAIL("srcCoeff should not refer to src or dst.");
break;
// TODO: update this once GrPaint actually has a const color.
case kConstC_GrBlendCoeff:
case kIConstC_GrBlendCoeff:
case kConstA_GrBlendCoeff:
case kIConstA_GrBlendCoeff:
*solidColorKnownComponents = 0;
break;
}
} else {
solidColorKnownComponents = 0;
}
}
return opaque;
}
void GrPorterDuffXPFactory::getInvariantOutput(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI,
GrXPFactory::InvariantOutput* output) const {
if (!coveragePOI.isSolidWhite()) {
output->fWillBlendWithDst = true;
output->fBlendedColorFlags = 0;
return;
}
GrBlendCoeff srcCoeff = fSrcCoeff;
GrBlendCoeff dstCoeff = fDstCoeff;
// TODO: figure out to merge this simplify with other current optimization code paths and
// eventually remove from GrBlend
GrSimplifyBlend(&srcCoeff, &dstCoeff, colorPOI.color(), colorPOI.validFlags(),
0, 0, 0);
if (GrBlendCoeffRefsDst(srcCoeff)) {
output->fWillBlendWithDst = true;
output->fBlendedColorFlags = 0;
return;
}
if (kZero_GrBlendCoeff != dstCoeff) {
bool srcAIsOne = colorPOI.isOpaque();
if (kISA_GrBlendCoeff != dstCoeff || !srcAIsOne) {
output->fWillBlendWithDst = true;
}
output->fBlendedColorFlags = 0;
return;
}
switch (srcCoeff) {
case kZero_GrBlendCoeff:
output->fBlendedColor = 0;
output->fBlendedColorFlags = kRGBA_GrColorComponentFlags;
break;
case kOne_GrBlendCoeff:
output->fBlendedColor = colorPOI.color();
output->fBlendedColorFlags = colorPOI.validFlags();
break;
// The src coeff should never refer to the src and if it refers to dst then opaque
// should have been false.
case kSC_GrBlendCoeff:
case kISC_GrBlendCoeff:
case kDC_GrBlendCoeff:
case kIDC_GrBlendCoeff:
case kSA_GrBlendCoeff:
case kISA_GrBlendCoeff:
case kDA_GrBlendCoeff:
case kIDA_GrBlendCoeff:
default:
SkFAIL("srcCoeff should not refer to src or dst.");
break;
// TODO: update this once GrPaint actually has a const color.
case kConstC_GrBlendCoeff:
case kIConstC_GrBlendCoeff:
case kConstA_GrBlendCoeff:
case kIConstA_GrBlendCoeff:
output->fBlendedColorFlags = 0;
break;
}
output->fWillBlendWithDst = false;
}
