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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrSimpleTextureEffect.h"
#include "GrInvariantOutput.h"
#include "GrProxyMove.h"
#include "GrTexture.h"
#include "glsl/GrGLSLColorSpaceXformHelper.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
GrSimpleTextureEffect::GrSimpleTextureEffect(GrContext* ctx, sk_sp<GrTextureProxy> proxy,
sk_sp<GrColorSpaceXform> colorSpaceXform,
const SkMatrix& matrix,
GrSamplerParams::FilterMode filterMode)
: INHERITED{ctx,
ModulationFlags(proxy->config()),
GR_PROXY_MOVE(proxy),
std::move(colorSpaceXform),
matrix,
filterMode} {
this->initClassID<GrSimpleTextureEffect>();
}
GrSimpleTextureEffect::GrSimpleTextureEffect(GrContext* ctx, sk_sp<GrTextureProxy> proxy,
sk_sp<GrColorSpaceXform> colorSpaceXform,
const SkMatrix& matrix,
const GrSamplerParams& params)
: INHERITED{ctx,
ModulationFlags(proxy->config()),
GR_PROXY_MOVE(proxy),
std::move(colorSpaceXform),
matrix,
params} {
this->initClassID<GrSimpleTextureEffect>();
}
class GrGLSimpleTextureEffect : public GrGLSLFragmentProcessor {
public:
void emitCode(EmitArgs& args) override {
const GrSimpleTextureEffect& textureEffect = args.fFp.cast<GrSimpleTextureEffect>();
GrGLSLColorSpaceXformHelper colorSpaceHelper(args.fUniformHandler,
textureEffect.colorSpaceXform(),
&fColorSpaceXformUni);
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
fragBuilder->codeAppendf("%s = ", args.fOutputColor);
fragBuilder->appendTextureLookupAndModulate(args.fInputColor,
args.fTexSamplers[0],
args.fTransformedCoords[0].c_str(),
args.fTransformedCoords[0].getType(),
&colorSpaceHelper);
fragBuilder->codeAppend(";");
}
static inline void GenKey(const GrProcessor& effect, const GrShaderCaps&,
GrProcessorKeyBuilder* b) {
const GrSimpleTextureEffect& textureEffect = effect.cast<GrSimpleTextureEffect>();
b->add32(GrColorSpaceXform::XformKey(textureEffect.colorSpaceXform()));
}
protected:
void onSetData(const GrGLSLProgramDataManager& pdman, const GrProcessor& processor) override {
const GrSimpleTextureEffect& textureEffect = processor.cast<GrSimpleTextureEffect>();
if (SkToBool(textureEffect.colorSpaceXform())) {
pdman.setSkMatrix44(fColorSpaceXformUni, textureEffect.colorSpaceXform()->srcToDst());
}
}
private:
typedef GrGLSLFragmentProcessor INHERITED;
UniformHandle fColorSpaceXformUni;
};
///////////////////////////////////////////////////////////////////////////////
void GrSimpleTextureEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
this->updateInvariantOutputForModulation(inout);
}
void GrSimpleTextureEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {
GrGLSimpleTextureEffect::GenKey(*this, caps, b);
}
GrGLSLFragmentProcessor* GrSimpleTextureEffect::onCreateGLSLInstance() const {
return new GrGLSimpleTextureEffect;
}
///////////////////////////////////////////////////////////////////////////////
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSimpleTextureEffect);
#if GR_TEST_UTILS
sk_sp<GrFragmentProcessor> GrSimpleTextureEffect::TestCreate(GrProcessorTestData* d) {
int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx
: GrProcessorUnitTest::kAlphaTextureIdx;
static const SkShader::TileMode kTileModes[] = {
SkShader::kClamp_TileMode,
SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode,
};
SkShader::TileMode tileModes[] = {
kTileModes[d->fRandom->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
kTileModes[d->fRandom->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
};
GrSamplerParams params(tileModes, d->fRandom->nextBool() ? GrSamplerParams::kBilerp_FilterMode
: GrSamplerParams::kNone_FilterMode);
const SkMatrix& matrix = GrTest::TestMatrix(d->fRandom);
sk_sp<GrColorSpaceXform> colorSpaceXform = GrTest::TestColorXform(d->fRandom);
return GrSimpleTextureEffect::Make(d->context(), d->textureProxy(texIdx),
std::move(colorSpaceXform), matrix);
}
#endif
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