blob: 950705c4f0a83128da21f7195b05058397481e27 [file] [log] [blame]
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
enum class InputMode {
kIgnore,
kModulateRGBA,
kModulateA,
kLast = kModulateA
};
in fragmentProcessor? inputFP;
layout(ctype=SkPMColor4f, tracked) in uniform half4 color;
layout(key) in InputMode mode;
@optimizationFlags {
(inputFP ? ProcessorOptimizationFlags(inputFP.get()) : kAll_OptimizationFlags) &
(kConstantOutputForConstantInput_OptimizationFlag |
((mode != InputMode::kIgnore) ? kCompatibleWithCoverageAsAlpha_OptimizationFlag
: kNone_OptimizationFlags) |
((color.isOpaque()) ? kPreservesOpaqueInput_OptimizationFlag
: kNone_OptimizationFlags))
}
void main() {
@switch (mode) {
case InputMode::kIgnore: {
sk_OutColor = color;
break;
}
case InputMode::kModulateRGBA: {
half4 inputColor = sample(inputFP, sk_InColor);
sk_OutColor = inputColor * color;
break;
}
case InputMode::kModulateA: {
half inputAlpha = sample(inputFP, sk_InColor).a;
sk_OutColor = inputAlpha * color;
break;
}
}
}
@class {
static const int kInputModeCnt = (int) InputMode::kLast + 1;
SkPMColor4f constantOutputForConstantInput(const SkPMColor4f& inColor) const override {
switch (mode) {
case InputMode::kIgnore: {
return color;
}
case InputMode::kModulateA: {
SkPMColor4f input = this->numChildProcessors()
? ConstantOutputForConstantInput(this->childProcessor(inputFP_index), inColor)
: inColor;
return color * input.fA;
}
case InputMode::kModulateRGBA: {
SkPMColor4f input = this->numChildProcessors()
? ConstantOutputForConstantInput(this->childProcessor(inputFP_index), inColor)
: inColor;
return color * input;
}
}
SkUNREACHABLE;
}
}
@test(d) {
SkPMColor4f color;
int colorPicker = d->fRandom->nextULessThan(3);
switch (colorPicker) {
case 0: {
uint32_t a = d->fRandom->nextULessThan(0x100);
uint32_t r = d->fRandom->nextULessThan(a+1);
uint32_t g = d->fRandom->nextULessThan(a+1);
uint32_t b = d->fRandom->nextULessThan(a+1);
color = SkPMColor4f::FromBytes_RGBA(GrColorPackRGBA(r, g, b, a));
break;
}
case 1:
color = SK_PMColor4fTRANSPARENT;
break;
case 2:
uint32_t c = d->fRandom->nextULessThan(0x100);
color = SkPMColor4f::FromBytes_RGBA(c | (c << 8) | (c << 16) | (c << 24));
break;
}
InputMode mode = static_cast<InputMode>(d->fRandom->nextULessThan(kInputModeCnt));
return GrConstColorProcessor::Make(/*inputFP=*/nullptr, color, mode);
}