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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 "GrTBackendProcessorFactory.h"
#include "GrTexture.h"
#include "gl/GrGLProcessor.h"
#include "gl/GrGLSL.h"
#include "gl/GrGLTexture.h"
#include "gl/builders/GrGLProgramBuilder.h"
class GrGLSimpleTextureEffect : public GrGLFragmentProcessor {
public:
GrGLSimpleTextureEffect(const GrBackendProcessorFactory& factory, const GrProcessor&)
: INHERITED (factory) {
}
virtual void emitCode(GrGLFPBuilder* builder,
const GrFragmentProcessor& fp,
const char* outputColor,
const char* inputColor,
const TransformedCoordsArray& coords,
const TextureSamplerArray& samplers) SK_OVERRIDE {
GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
fsBuilder->codeAppendf("\t%s = ", outputColor);
fsBuilder->appendTextureLookupAndModulate(inputColor,
samplers[0],
coords[0].c_str(),
coords[0].getType());
fsBuilder->codeAppend(";\n");
}
private:
typedef GrGLFragmentProcessor INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
void GrSimpleTextureEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
this->updateInvariantOutputForModulation(inout);
}
const GrBackendFragmentProcessorFactory& GrSimpleTextureEffect::getFactory() const {
return GrTBackendFragmentProcessorFactory<GrSimpleTextureEffect>::getInstance();
}
///////////////////////////////////////////////////////////////////////////////
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSimpleTextureEffect);
GrFragmentProcessor* GrSimpleTextureEffect::TestCreate(SkRandom* random,
GrContext*,
const GrDrawTargetCaps&,
GrTexture* textures[]) {
int texIdx = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx :
GrProcessorUnitTest::kAlphaTextureIdx;
static const SkShader::TileMode kTileModes[] = {
SkShader::kClamp_TileMode,
SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode,
};
SkShader::TileMode tileModes[] = {
kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
};
GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode :
GrTextureParams::kNone_FilterMode);
static const GrCoordSet kCoordSets[] = {
kLocal_GrCoordSet,
kPosition_GrCoordSet
};
GrCoordSet coordSet = kCoordSets[random->nextULessThan(SK_ARRAY_COUNT(kCoordSets))];
const SkMatrix& matrix = GrProcessorUnitTest::TestMatrix(random);
return GrSimpleTextureEffect::Create(textures[texIdx], matrix, coordSet);
}
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