| /* |
| * 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 "gl/GrGLEffect.h" |
| #include "gl/GrGLEffectMatrix.h" |
| #include "gl/GrGLSL.h" |
| #include "gl/GrGLTexture.h" |
| #include "GrTBackendEffectFactory.h" |
| #include "GrTexture.h" |
| |
| class GrGLSimpleTextureEffect : public GrGLEffect { |
| public: |
| GrGLSimpleTextureEffect(const GrBackendEffectFactory& factory, const GrDrawEffect& drawEffect) |
| : INHERITED (factory) { |
| GrEffect::CoordsType coordsType = |
| drawEffect.castEffect<GrSimpleTextureEffect>().coordsType(); |
| if (GrEffect::kCustom_CoordsType != coordsType) { |
| SkNEW_IN_TLAZY(&fEffectMatrix, GrGLEffectMatrix, (coordsType)); |
| } |
| } |
| |
| virtual void emitCode(GrGLShaderBuilder* builder, |
| const GrDrawEffect& drawEffect, |
| EffectKey key, |
| const char* outputColor, |
| const char* inputColor, |
| const TextureSamplerArray& samplers) SK_OVERRIDE { |
| const GrSimpleTextureEffect& ste = drawEffect.castEffect<GrSimpleTextureEffect>(); |
| SkString fsCoordName; |
| GrSLType fsCoordSLType; |
| if (GrEffect::kCustom_CoordsType == ste.coordsType()) { |
| SkASSERT(ste.getMatrix().isIdentity()); |
| SkASSERT(1 == ste.numVertexAttribs()); |
| fsCoordSLType = kVec2f_GrSLType; |
| const char* vsVaryingName; |
| const char* fsVaryingNamePtr; |
| builder->addVarying(kVec2f_GrSLType, "textureCoords", &vsVaryingName, &fsVaryingNamePtr); |
| fsCoordName = fsVaryingNamePtr; |
| const char* attrName = |
| builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0])->c_str(); |
| builder->vsCodeAppendf("\t%s = %s;\n", vsVaryingName, attrName); |
| } else { |
| fsCoordSLType = fEffectMatrix.get()->emitCode(builder, key, &fsCoordName); |
| } |
| builder->fsCodeAppendf("\t%s = ", outputColor); |
| builder->appendTextureLookupAndModulate(GrGLShaderBuilder::kFragment_ShaderType, |
| inputColor, |
| samplers[0], |
| fsCoordName.c_str(), |
| fsCoordSLType); |
| builder->fsCodeAppend(";\n"); |
| } |
| |
| static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) { |
| const GrSimpleTextureEffect& ste = drawEffect.castEffect<GrSimpleTextureEffect>(); |
| if (GrEffect::kCustom_CoordsType == ste.coordsType()) { |
| return 1 << GrGLEffectMatrix::kKeyBits; |
| } else { |
| return GrGLEffectMatrix::GenKey(ste.getMatrix(), |
| drawEffect, |
| ste.coordsType(), |
| ste.texture(0)); |
| } |
| } |
| |
| virtual void setData(const GrGLUniformManager& uman, |
| const GrDrawEffect& drawEffect) SK_OVERRIDE { |
| const GrSimpleTextureEffect& ste = drawEffect.castEffect<GrSimpleTextureEffect>(); |
| if (GrEffect::kCustom_CoordsType == ste.coordsType()) { |
| SkASSERT(ste.getMatrix().isIdentity()); |
| } else { |
| fEffectMatrix.get()->setData(uman, ste.getMatrix(), drawEffect, ste.texture(0)); |
| } |
| } |
| |
| private: |
| SkTLazy<GrGLEffectMatrix> fEffectMatrix; |
| typedef GrGLEffect INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void GrSimpleTextureEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { |
| this->updateConstantColorComponentsForModulation(color, validFlags); |
| } |
| |
| const GrBackendEffectFactory& GrSimpleTextureEffect::getFactory() const { |
| return GrTBackendEffectFactory<GrSimpleTextureEffect>::getInstance(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_EFFECT_TEST(GrSimpleTextureEffect); |
| |
| GrEffectRef* GrSimpleTextureEffect::TestCreate(SkMWCRandom* random, |
| GrContext*, |
| const GrDrawTargetCaps&, |
| GrTexture* textures[]) { |
| int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : |
| GrEffectUnitTest::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 CoordsType kCoordsTypes[] = { |
| kLocal_CoordsType, |
| kPosition_CoordsType, |
| kCustom_CoordsType |
| }; |
| CoordsType coordsType = kCoordsTypes[random->nextULessThan(GR_ARRAY_COUNT(kCoordsTypes))]; |
| |
| if (kCustom_CoordsType == coordsType) { |
| return GrSimpleTextureEffect::CreateWithCustomCoords(textures[texIdx], params); |
| } else { |
| const SkMatrix& matrix = GrEffectUnitTest::TestMatrix(random); |
| return GrSimpleTextureEffect::Create(textures[texIdx], matrix); |
| } |
| } |