本文整理汇总了C++中GrProcOptInfo::allStagesMultiplyInput方法的典型用法代码示例。如果您正苦于以下问题：C++ GrProcOptInfo::allStagesMultiplyInput方法的具体用法？C++ GrProcOptInfo::allStagesMultiplyInput怎么用？C++ GrProcOptInfo::allStagesMultiplyInput使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GrProcOptInfo的用法示例。
在下文中一共展示了GrProcOptInfo::allStagesMultiplyInput方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
GrXferProcessor::OptFlags
PorterDuffXferProcessor::onGetOptimizations(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI,
bool doesStencilWrite,
GrColor* overrideColor,
const GrCaps& caps) {
GrXferProcessor::OptFlags optFlags = GrXferProcessor::kNone_OptFlags;
if (!fBlendFormula.modifiesDst()) {
if (!doesStencilWrite) {
optFlags |= GrXferProcessor::kSkipDraw_OptFlag;
}
optFlags |= (GrXferProcessor::kIgnoreColor_OptFlag |
GrXferProcessor::kIgnoreCoverage_OptFlag |
GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag);
} else {
if (!fBlendFormula.usesInputColor()) {
optFlags |= GrXferProcessor::kIgnoreColor_OptFlag;
}
if (coveragePOI.isSolidWhite()) {
optFlags |= GrXferProcessor::kIgnoreCoverage_OptFlag;
}
if (colorPOI.allStagesMultiplyInput() && fBlendFormula.canTweakAlphaForCoverage()) {
optFlags |= GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag;
}
}
return optFlags;
}示例2: if
GrXferProcessor::OptFlags
PorterDuffXferProcessor::internalGetOptimizations(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI,
bool doesStencilWrite) {
if (this->willReadDstColor()) {
return GrXferProcessor::kNone_Opt;
}
bool srcAIsOne = colorPOI.isOpaque();
bool hasCoverage = !coveragePOI.isSolidWhite();
bool dstCoeffIsOne = kOne_GrBlendCoeff == fDstBlend ||
(kSA_GrBlendCoeff == fDstBlend && srcAIsOne);
bool dstCoeffIsZero = kZero_GrBlendCoeff == fDstBlend ||
(kISA_GrBlendCoeff == fDstBlend && srcAIsOne);
// When coeffs are (0,1) there is no reason to draw at all, unless
// stenciling is enabled. Having color writes disabled is effectively
// (0,1).
if ((kZero_GrBlendCoeff == fSrcBlend && dstCoeffIsOne)) {
if (doesStencilWrite) {
return GrXferProcessor::kIgnoreColor_OptFlag |
GrXferProcessor::kSetCoverageDrawing_OptFlag;
} else {
fDstBlend = kOne_GrBlendCoeff;
return GrXferProcessor::kSkipDraw_OptFlag;
}
}
// if we don't have coverage we can check whether the dst
// has to read at all. If not, we'll disable blending.
if (!hasCoverage) {
if (dstCoeffIsZero) {
if (kOne_GrBlendCoeff == fSrcBlend) {
// if there is no coverage and coeffs are (1,0) then we
// won't need to read the dst at all, it gets replaced by src
fDstBlend = kZero_GrBlendCoeff;
return GrXferProcessor::kNone_Opt;
} else if (kZero_GrBlendCoeff == fSrcBlend) {
// if the op is "clear" then we don't need to emit a color
// or blend, just write transparent black into the dst.
fSrcBlend = kOne_GrBlendCoeff;
fDstBlend = kZero_GrBlendCoeff;
return GrXferProcessor::kIgnoreColor_OptFlag |
GrXferProcessor::kIgnoreCoverage_OptFlag;
}
}
} else {
// check whether coverage can be safely rolled into alpha
// of if we can skip color computation and just emit coverage
if (can_tweak_alpha_for_coverage(fDstBlend)) {
if (colorPOI.allStagesMultiplyInput()) {
return GrXferProcessor::kSetCoverageDrawing_OptFlag |
GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag;
} else {
return GrXferProcessor::kSetCoverageDrawing_OptFlag;
}
}
if (dstCoeffIsZero) {
if (kZero_GrBlendCoeff == fSrcBlend) {
// the source color is not included in the blend
// the dst coeff is effectively zero so blend works out to:
// (c)(0)D + (1-c)D = (1-c)D.
fDstBlend = kISA_GrBlendCoeff;
return GrXferProcessor::kIgnoreColor_OptFlag |
GrXferProcessor::kSetCoverageDrawing_OptFlag;
} else if (srcAIsOne) {
// the dst coeff is effectively zero so blend works out to:
// cS + (c)(0)D + (1-c)D = cS + (1-c)D.
// If Sa is 1 then we can replace Sa with c
// and set dst coeff to 1-Sa.
fDstBlend = kISA_GrBlendCoeff;
if (colorPOI.allStagesMultiplyInput()) {
return GrXferProcessor::kSetCoverageDrawing_OptFlag |
GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag;
} else {
return GrXferProcessor::kSetCoverageDrawing_OptFlag;
}
}
} else if (dstCoeffIsOne) {
// the dst coeff is effectively one so blend works out to:
// cS + (c)(1)D + (1-c)D = cS + D.
fDstBlend = kOne_GrBlendCoeff;
if (colorPOI.allStagesMultiplyInput()) {
return GrXferProcessor::kSetCoverageDrawing_OptFlag |
GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag;
} else {
return GrXferProcessor::kSetCoverageDrawing_OptFlag;
}
return GrXferProcessor::kSetCoverageDrawing_OptFlag;
}
}
return GrXferProcessor::kNone_Opt;
}