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comparison: gfx/skia/trunk/src/gpu/effects/GrCustomCoordsTextureEffect.cpp
gfx/skia/trunk/src/gpu/effects/GrCustomCoordsTextureEffect.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:cf78be61d425 |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "GrCustomCoordsTextureEffect.h" | |
| 9 #include "gl/GrGLEffect.h" | |
| 10 #include "gl/GrGLSL.h" | |
| 11 #include "gl/GrGLTexture.h" | |
| 12 #include "gl/GrGLVertexEffect.h" | |
| 13 #include "GrTBackendEffectFactory.h" | |
| 14 #include "GrTexture.h" | |
| 15 | |
| 16 class GrGLCustomCoordsTextureEffect : public GrGLVertexEffect { | |
| 17 public: | |
| 18 GrGLCustomCoordsTextureEffect(const GrBackendEffectFactory& factory, const GrDrawEffect& drawEffect) | |
| 19 : INHERITED (factory) {} | |
| 20 | |
| 21 virtual void emitCode(GrGLFullShaderBuilder* builder, | |
| 22 const GrDrawEffect& drawEffect, | |
| 23 EffectKey key, | |
| 24 const char* outputColor, | |
| 25 const char* inputColor, | |
| 26 const TransformedCoordsArray&, | |
| 27 const TextureSamplerArray& samplers) SK_OVERRIDE { | |
| 28 SkASSERT(1 == drawEffect.castEffect<GrCustomCoordsTextureEffect>().numVertexAttribs()); | |
| 29 | |
| 30 SkString fsCoordName; | |
| 31 const char* vsVaryingName; | |
| 32 const char* fsVaryingNamePtr; | |
| 33 builder->addVarying(kVec2f_GrSLType, "textureCoords", &vsVaryingName, &fsVaryingNamePtr); | |
| 34 fsCoordName = fsVaryingNamePtr; | |
| 35 | |
| 36 const char* attrName = | |
| 37 builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0])->c_str(); | |
| 38 builder->vsCodeAppendf("\t%s = %s;\n", vsVaryingName, attrName); | |
| 39 | |
| 40 builder->fsCodeAppendf("\t%s = ", outputColor); | |
| 41 builder->fsAppendTextureLookupAndModulate(inputColor, | |
| 42 samplers[0], | |
| 43 fsCoordName.c_str(), | |
| 44 kVec2f_GrSLType); | |
| 45 builder->fsCodeAppend(";\n"); | |
| 46 } | |
| 47 | |
| 48 virtual void setData(const GrGLUniformManager& uman, | |
| 49 const GrDrawEffect& drawEffect) SK_OVERRIDE {} | |
| 50 | |
| 51 private: | |
| 52 typedef GrGLVertexEffect INHERITED; | |
| 53 }; | |
| 54 | |
| 55 /////////////////////////////////////////////////////////////////////////////// | |
| 56 | |
| 57 GrCustomCoordsTextureEffect::GrCustomCoordsTextureEffect(GrTexture* texture, | |
| 58 const GrTextureParams& params) | |
| 59 : fTextureAccess(texture, params) { | |
| 60 this->addTextureAccess(&fTextureAccess); | |
| 61 this->addVertexAttrib(kVec2f_GrSLType); | |
| 62 } | |
| 63 | |
| 64 bool GrCustomCoordsTextureEffect::onIsEqual(const GrEffect& other) const { | |
| 65 const GrCustomCoordsTextureEffect& cte = CastEffect<GrCustomCoordsTextureEffect>(other); | |
| 66 return fTextureAccess == cte.fTextureAccess; | |
| 67 } | |
| 68 | |
| 69 void GrCustomCoordsTextureEffect::getConstantColorComponents(GrColor* color, | |
| 70 uint32_t* validFlags) const { | |
| 71 if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) && | |
| 72 GrPixelConfigIsOpaque(this->texture(0)->config())) { | |
| 73 *validFlags = kA_GrColorComponentFlag; | |
| 74 } else { | |
| 75 *validFlags = 0; | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 const GrBackendEffectFactory& GrCustomCoordsTextureEffect::getFactory() const { | |
| 80 return GrTBackendEffectFactory<GrCustomCoordsTextureEffect>::getInstance(); | |
| 81 } | |
| 82 | |
| 83 /////////////////////////////////////////////////////////////////////////////// | |
| 84 | |
| 85 GR_DEFINE_EFFECT_TEST(GrCustomCoordsTextureEffect); | |
| 86 | |
| 87 GrEffectRef* GrCustomCoordsTextureEffect::TestCreate(SkRandom* random, | |
| 88 GrContext*, | |
| 89 const GrDrawTargetCaps&, | |
| 90 GrTexture* textures[]) { | |
| 91 int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : | |
| 92 GrEffectUnitTest::kAlphaTextureIdx; | |
| 93 static const SkShader::TileMode kTileModes[] = { | |
| 94 SkShader::kClamp_TileMode, | |
| 95 SkShader::kRepeat_TileMode, | |
| 96 SkShader::kMirror_TileMode, | |
| 97 }; | |
| 98 SkShader::TileMode tileModes[] = { | |
| 99 kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], | |
| 100 kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], | |
| 101 }; | |
| 102 GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode : | |
| 103 GrTextureParams::kNone_FilterMode); | |
| 104 | |
| 105 return GrCustomCoordsTextureEffect::Create(textures[texIdx], params); | |
| 106 } |
