AuroraMiddleware/skia2
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Track if all stages modulate inputColor in computeInvariantOutput

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BUG=skia:

Review URL: https://codereview.chromium.org/647863002
This commit is contained in:
egdaniel 2014-10-14 06:48:46 -07:00 committed by Commit bot
parent af44e701a5
commit ab84fae29f
1 changed files with 22 additions and 9 deletions
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31
include/gpu/GrProcessor.h
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@ -38,7 +38,8 @@ public:
virtual ~GrProcessor();
struct InvariantOutput{
InvariantOutput() : fColor(0), fValidFlags(0), fIsSingleComponent(false) {}
InvariantOutput() : fColor(0), fValidFlags(0), fIsSingleComponent(false),
fNonMulStageFound(false) {}
void mulByUnknownOpaqueColor() {
if (this->isOpaque()) {
@ -53,15 +54,15 @@ public:
void mulByUnknownColor() {
if (this->hasZeroAlpha()) {
this->setToTransparentBlack();
this->internalSetToTransparentBlack();
} else {
this->setToUnknown();
this->internalSetToUnknown();
}
}
void mulByUnknownAlpha() {
if (this->hasZeroAlpha()) {
this->setToTransparentBlack();
this->internalSetToTransparentBlack();
} else {
// We don't need to change fIsSingleComponent in this case
fValidFlags = 0;
@ -74,20 +75,20 @@ public:
}
void setToTransparentBlack() {
fValidFlags = kRGBA_GrColorComponentFlags;
fColor = 0;
fIsSingleComponent = true;
this->internalSetToTransparentBlack();
fNonMulStageFound = true;
}
void setToOther(uint8_t validFlags, GrColor color) {
fValidFlags = validFlags;
fColor = color;
fIsSingleComponent = false;
fNonMulStageFound = true;
}
void setToUnknown() {
fValidFlags = 0;
fIsSingleComponent = false;
this->internalSetToUnknown();
fNonMulStageFound= true;
}
bool isOpaque() const {
@ -108,6 +109,17 @@ public:
SkDEBUGCODE(void validate() const;)
private:
void internalSetToTransparentBlack() {
fValidFlags = kRGBA_GrColorComponentFlags;
fColor = 0;
fIsSingleComponent = true;
}
void internalSetToUnknown() {
fValidFlags = 0;
fIsSingleComponent = false;
}
bool hasZeroAlpha() const {
return ((fValidFlags & kA_GrColorComponentFlag) && 0 == GrColorUnpackA(fColor));
}
@ -128,6 +140,7 @@ public:
GrColor fColor;
uint32_t fValidFlags;
bool fIsSingleComponent;
bool fNonMulStageFound;
};
/**