michael@0: /*
michael@0:  * Copyright 2012 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #include "GrSimpleTextureEffect.h"
michael@0: #include "gl/GrGLEffect.h"
michael@0: #include "gl/GrGLSL.h"
michael@0: #include "gl/GrGLTexture.h"
michael@0: #include "GrTBackendEffectFactory.h"
michael@0: #include "GrTexture.h"
michael@0: 
michael@0: class GrGLSimpleTextureEffect : public GrGLEffect {
michael@0: public:
michael@0:     GrGLSimpleTextureEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
michael@0:         : INHERITED (factory) {
michael@0:     }
michael@0: 
michael@0:     virtual void emitCode(GrGLShaderBuilder* builder,
michael@0:                           const GrDrawEffect& drawEffect,
michael@0:                           EffectKey key,
michael@0:                           const char* outputColor,
michael@0:                           const char* inputColor,
michael@0:                           const TransformedCoordsArray& coords,
michael@0:                           const TextureSamplerArray& samplers) SK_OVERRIDE {
michael@0:         builder->fsCodeAppendf("\t%s = ", outputColor);
michael@0:         builder->fsAppendTextureLookupAndModulate(inputColor,
michael@0:                                                   samplers[0],
michael@0:                                                   coords[0].c_str(),
michael@0:                                                   coords[0].type());
michael@0:         builder->fsCodeAppend(";\n");
michael@0:     }
michael@0: 
michael@0: private:
michael@0:     typedef GrGLEffect INHERITED;
michael@0: };
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: void GrSimpleTextureEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
michael@0:     this->updateConstantColorComponentsForModulation(color, validFlags);
michael@0: }
michael@0: 
michael@0: const GrBackendEffectFactory& GrSimpleTextureEffect::getFactory() const {
michael@0:     return GrTBackendEffectFactory<GrSimpleTextureEffect>::getInstance();
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: GR_DEFINE_EFFECT_TEST(GrSimpleTextureEffect);
michael@0: 
michael@0: GrEffectRef* GrSimpleTextureEffect::TestCreate(SkRandom* random,
michael@0:                                                GrContext*,
michael@0:                                                const GrDrawTargetCaps&,
michael@0:                                                GrTexture* textures[]) {
michael@0:     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
michael@0:                                       GrEffectUnitTest::kAlphaTextureIdx;
michael@0:     static const SkShader::TileMode kTileModes[] = {
michael@0:         SkShader::kClamp_TileMode,
michael@0:         SkShader::kRepeat_TileMode,
michael@0:         SkShader::kMirror_TileMode,
michael@0:     };
michael@0:     SkShader::TileMode tileModes[] = {
michael@0:         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
michael@0:         kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))],
michael@0:     };
michael@0:     GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode :
michael@0:                                                            GrTextureParams::kNone_FilterMode);
michael@0: 
michael@0:     static const GrCoordSet kCoordSets[] = {
michael@0:         kLocal_GrCoordSet,
michael@0:         kPosition_GrCoordSet
michael@0:     };
michael@0:     GrCoordSet coordSet = kCoordSets[random->nextULessThan(GR_ARRAY_COUNT(kCoordSets))];
michael@0: 
michael@0:     const SkMatrix& matrix = GrEffectUnitTest::TestMatrix(random);
michael@0:     return GrSimpleTextureEffect::Create(textures[texIdx], matrix, coordSet);
michael@0: }