| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrBezierEffect.h" |
| |
| #include "gl/builders/GrGLFullProgramBuilder.h" |
| #include "gl/GrGLProcessor.h" |
| #include "gl/GrGLSL.h" |
| #include "gl/GrGLGeometryProcessor.h" |
| #include "GrTBackendProcessorFactory.h" |
| |
| class GrGLConicEffect : public GrGLGeometryProcessor { |
| public: |
| GrGLConicEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| |
| virtual void emitCode(GrGLFullProgramBuilder* builder, |
| const GrGeometryProcessor& geometryProcessor, |
| const GrProcessorKey& key, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray&) SK_OVERRIDE; |
| |
| static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*); |
| |
| virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {} |
| |
| private: |
| GrPrimitiveEdgeType fEdgeType; |
| |
| typedef GrGLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLConicEffect::GrGLConicEffect(const GrBackendProcessorFactory& factory, |
| const GrProcessor& effect) |
| : INHERITED (factory) { |
| const GrConicEffect& ce = effect.cast<GrConicEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLConicEffect::emitCode(GrGLFullProgramBuilder* builder, |
| const GrGeometryProcessor& geometryProcessor, |
| const GrProcessorKey& key, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray& samplers) { |
| const char *vsName, *fsName; |
| |
| builder->addVarying(kVec4f_GrSLType, "ConicCoeffs", |
| &vsName, &fsName); |
| |
| const GrShaderVar& inConicCoeffs = geometryProcessor.cast<GrConicEffect>().inConicCoeffs(); |
| GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); |
| vsBuilder->codeAppendf("%s = %s;", vsName, inConicCoeffs.c_str()); |
| |
| GrGLProcessorFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| fsBuilder->codeAppend("float edgeAlpha;"); |
| |
| switch (fEdgeType) { |
| case kHairlineAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("vec3 dklmdx = dFdx(%s.xyz);", fsName); |
| fsBuilder->codeAppendf("vec3 dklmdy = dFdy(%s.xyz);", fsName); |
| fsBuilder->codeAppendf("float dfdx =" |
| "2.0 * %s.x * dklmdx.x - %s.y * dklmdx.z - %s.z * dklmdx.y;", |
| fsName, fsName, fsName); |
| fsBuilder->codeAppendf("float dfdy =" |
| "2.0 * %s.x * dklmdy.x - %s.y * dklmdy.z - %s.z * dklmdy.y;", |
| fsName, fsName, fsName); |
| fsBuilder->codeAppend("vec2 gF = vec2(dfdx, dfdy);"); |
| fsBuilder->codeAppend("float gFM = sqrt(dot(gF, gF));"); |
| fsBuilder->codeAppendf("float func = %s.x*%s.x - %s.y*%s.z;", fsName, fsName, |
| fsName, fsName); |
| fsBuilder->codeAppend("func = abs(func);"); |
| fsBuilder->codeAppend("edgeAlpha = func / gFM;"); |
| fsBuilder->codeAppend("edgeAlpha = max(1.0 - edgeAlpha, 0.0);"); |
| // Add line below for smooth cubic ramp |
| // fsBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case kFillAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("vec3 dklmdx = dFdx(%s.xyz);", fsName); |
| fsBuilder->codeAppendf("vec3 dklmdy = dFdy(%s.xyz);", fsName); |
| fsBuilder->codeAppendf("float dfdx =" |
| "2.0 * %s.x * dklmdx.x - %s.y * dklmdx.z - %s.z * dklmdx.y;", |
| fsName, fsName, fsName); |
| fsBuilder->codeAppendf("float dfdy =" |
| "2.0 * %s.x * dklmdy.x - %s.y * dklmdy.z - %s.z * dklmdy.y;", |
| fsName, fsName, fsName); |
| fsBuilder->codeAppend("vec2 gF = vec2(dfdx, dfdy);"); |
| fsBuilder->codeAppend("float gFM = sqrt(dot(gF, gF));"); |
| fsBuilder->codeAppendf("float func = %s.x * %s.x - %s.y * %s.z;", fsName, fsName, |
| fsName, fsName); |
| fsBuilder->codeAppend("edgeAlpha = func / gFM;"); |
| fsBuilder->codeAppend("edgeAlpha = clamp(1.0 - edgeAlpha, 0.0, 1.0);"); |
| // Add line below for smooth cubic ramp |
| // fsBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case kFillBW_GrProcessorEdgeType: { |
| fsBuilder->codeAppendf("edgeAlpha = %s.x * %s.x - %s.y * %s.z;", fsName, fsName, |
| fsName, fsName); |
| fsBuilder->codeAppend("edgeAlpha = float(edgeAlpha < 0.0);"); |
| break; |
| } |
| default: |
| SkFAIL("Shouldn't get here"); |
| } |
| |
| fsBuilder->codeAppendf("%s = %s;", outputColor, |
| (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeAlpha")).c_str()); |
| } |
| |
| void GrGLConicEffect::GenKey(const GrProcessor& processor, const GrGLCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrConicEffect& ce = processor.cast<GrConicEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrConicEffect::~GrConicEffect() {} |
| |
| const GrBackendGeometryProcessorFactory& GrConicEffect::getFactory() const { |
| return GrTBackendGeometryProcessorFactory<GrConicEffect>::getInstance(); |
| } |
| |
| GrConicEffect::GrConicEffect(GrPrimitiveEdgeType edgeType) |
| : fEdgeType(edgeType) |
| , fInConicCoeffs(this->addVertexAttrib(GrShaderVar("inConicCoeffs", |
| kVec4f_GrSLType, |
| GrShaderVar::kAttribute_TypeModifier))) { |
| } |
| |
| bool GrConicEffect::onIsEqual(const GrProcessor& other) const { |
| const GrConicEffect& ce = other.cast<GrConicEffect>(); |
| return (ce.fEdgeType == fEdgeType); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrConicEffect); |
| |
| GrGeometryProcessor* GrConicEffect::TestCreate(SkRandom* random, |
| GrContext*, |
| const GrDrawTargetCaps& caps, |
| GrTexture*[]) { |
| GrGeometryProcessor* gp; |
| do { |
| GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| random->nextULessThan(kGrProcessorEdgeTypeCnt)); |
| gp = GrConicEffect::Create(edgeType, caps); |
| } while (NULL == gp); |
| return gp; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Quad |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class GrGLQuadEffect : public GrGLGeometryProcessor { |
| public: |
| GrGLQuadEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| |
| virtual void emitCode(GrGLFullProgramBuilder* builder, |
| const GrGeometryProcessor& geometryProcessor, |
| const GrProcessorKey& key, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray&) SK_OVERRIDE; |
| |
| static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*); |
| |
| virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {} |
| |
| private: |
| GrPrimitiveEdgeType fEdgeType; |
| |
| typedef GrGLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLQuadEffect::GrGLQuadEffect(const GrBackendProcessorFactory& factory, |
| const GrProcessor& effect) |
| : INHERITED (factory) { |
| const GrQuadEffect& ce = effect.cast<GrQuadEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLQuadEffect::emitCode(GrGLFullProgramBuilder* builder, |
| const GrGeometryProcessor& geometryProcessor, |
| const GrProcessorKey& key, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray& samplers) { |
| const char *vsName, *fsName; |
| builder->addVarying(kVec4f_GrSLType, "HairQuadEdge", &vsName, &fsName); |
| |
| GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); |
| const GrShaderVar& inHairQuadEdge = geometryProcessor.cast<GrQuadEffect>().inHairQuadEdge(); |
| vsBuilder->codeAppendf("%s = %s;", vsName, inHairQuadEdge.c_str()); |
| |
| GrGLProcessorFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| fsBuilder->codeAppendf("float edgeAlpha;"); |
| |
| switch (fEdgeType) { |
| case kHairlineAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("vec2 duvdx = dFdx(%s.xy);", fsName); |
| fsBuilder->codeAppendf("vec2 duvdy = dFdy(%s.xy);", fsName); |
| fsBuilder->codeAppendf("vec2 gF = vec2(2.0 * %s.x * duvdx.x - duvdx.y," |
| " 2.0 * %s.x * duvdy.x - duvdy.y);", |
| fsName, fsName); |
| fsBuilder->codeAppendf("edgeAlpha = (%s.x * %s.x - %s.y);", fsName, fsName, fsName); |
| fsBuilder->codeAppend("edgeAlpha = sqrt(edgeAlpha * edgeAlpha / dot(gF, gF));"); |
| fsBuilder->codeAppend("edgeAlpha = max(1.0 - edgeAlpha, 0.0);"); |
| // Add line below for smooth cubic ramp |
| // fsBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case kFillAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("vec2 duvdx = dFdx(%s.xy);", fsName); |
| fsBuilder->codeAppendf("vec2 duvdy = dFdy(%s.xy);", fsName); |
| fsBuilder->codeAppendf("vec2 gF = vec2(2.0 * %s.x * duvdx.x - duvdx.y," |
| " 2.0 * %s.x * duvdy.x - duvdy.y);", |
| fsName, fsName); |
| fsBuilder->codeAppendf("edgeAlpha = (%s.x * %s.x - %s.y);", fsName, fsName, fsName); |
| fsBuilder->codeAppend("edgeAlpha = edgeAlpha / sqrt(dot(gF, gF));"); |
| fsBuilder->codeAppend("edgeAlpha = clamp(1.0 - edgeAlpha, 0.0, 1.0);"); |
| // Add line below for smooth cubic ramp |
| // fsBuilder->codeAppend("edgeAlpha = edgeAlpha*edgeAlpha*(3.0-2.0*edgeAlpha);"); |
| break; |
| } |
| case kFillBW_GrProcessorEdgeType: { |
| fsBuilder->codeAppendf("edgeAlpha = (%s.x * %s.x - %s.y);", fsName, fsName, fsName); |
| fsBuilder->codeAppend("edgeAlpha = float(edgeAlpha < 0.0);"); |
| break; |
| } |
| default: |
| SkFAIL("Shouldn't get here"); |
| } |
| |
| fsBuilder->codeAppendf("%s = %s;", outputColor, |
| (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeAlpha")).c_str()); |
| } |
| |
| void GrGLQuadEffect::GenKey(const GrProcessor& processor, const GrGLCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrQuadEffect& ce = processor.cast<GrQuadEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrQuadEffect::~GrQuadEffect() {} |
| |
| const GrBackendGeometryProcessorFactory& GrQuadEffect::getFactory() const { |
| return GrTBackendGeometryProcessorFactory<GrQuadEffect>::getInstance(); |
| } |
| |
| GrQuadEffect::GrQuadEffect(GrPrimitiveEdgeType edgeType) |
| : fEdgeType(edgeType) |
| , fInHairQuadEdge(this->addVertexAttrib(GrShaderVar("inCubicCoeffs", |
| kVec4f_GrSLType, |
| GrShaderVar::kAttribute_TypeModifier))) { |
| } |
| |
| bool GrQuadEffect::onIsEqual(const GrProcessor& other) const { |
| const GrQuadEffect& ce = other.cast<GrQuadEffect>(); |
| return (ce.fEdgeType == fEdgeType); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrQuadEffect); |
| |
| GrGeometryProcessor* GrQuadEffect::TestCreate(SkRandom* random, |
| GrContext*, |
| const GrDrawTargetCaps& caps, |
| GrTexture*[]) { |
| GrGeometryProcessor* gp; |
| do { |
| GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| random->nextULessThan(kGrProcessorEdgeTypeCnt)); |
| gp = GrQuadEffect::Create(edgeType, caps); |
| } while (NULL == gp); |
| return gp; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Cubic |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class GrGLCubicEffect : public GrGLGeometryProcessor { |
| public: |
| GrGLCubicEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| |
| virtual void emitCode(GrGLFullProgramBuilder* builder, |
| const GrGeometryProcessor& geometryProcessor, |
| const GrProcessorKey& key, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray&) SK_OVERRIDE; |
| |
| static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*); |
| |
| virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {} |
| |
| private: |
| GrPrimitiveEdgeType fEdgeType; |
| |
| typedef GrGLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLCubicEffect::GrGLCubicEffect(const GrBackendProcessorFactory& factory, |
| const GrProcessor& processor) |
| : INHERITED (factory) { |
| const GrCubicEffect& ce = processor.cast<GrCubicEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLCubicEffect::emitCode(GrGLFullProgramBuilder* builder, |
| const GrGeometryProcessor& geometryProcessor, |
| const GrProcessorKey& key, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray&, |
| const TextureSamplerArray& samplers) { |
| const char *vsName, *fsName; |
| |
| builder->addVarying(kVec4f_GrSLType, "CubicCoeffs", |
| &vsName, &fsName, GrGLShaderVar::kHigh_Precision); |
| |
| GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder(); |
| const GrShaderVar& inCubicCoeffs = geometryProcessor.cast<GrCubicEffect>().inCubicCoeffs(); |
| vsBuilder->codeAppendf("%s = %s;", vsName, inCubicCoeffs.c_str()); |
| |
| GrGLProcessorFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| |
| GrGLShaderVar edgeAlpha("edgeAlpha", kFloat_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar dklmdx("dklmdx", kVec3f_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar dklmdy("dklmdy", kVec3f_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar dfdx("dfdx", kFloat_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar dfdy("dfdy", kFloat_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar gF("gF", kVec2f_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar gFM("gFM", kFloat_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| GrGLShaderVar func("func", kFloat_GrSLType, 0, GrGLShaderVar::kHigh_Precision); |
| |
| fsBuilder->declAppend(edgeAlpha); |
| fsBuilder->declAppend(dklmdx); |
| fsBuilder->declAppend(dklmdy); |
| fsBuilder->declAppend(dfdx); |
| fsBuilder->declAppend(dfdy); |
| fsBuilder->declAppend(gF); |
| fsBuilder->declAppend(gFM); |
| fsBuilder->declAppend(func); |
| |
| switch (fEdgeType) { |
| case kHairlineAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("%s = dFdx(%s.xyz);", dklmdx.c_str(), fsName); |
| fsBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), fsName); |
| fsBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdx.c_str(), fsName, fsName, dklmdx.c_str(), fsName, |
| dklmdx.c_str(), fsName, dklmdx.c_str()); |
| fsBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdy.c_str(), fsName, fsName, dklmdy.c_str(), fsName, |
| dklmdy.c_str(), fsName, dklmdy.c_str()); |
| fsBuilder->codeAppendf("%s = vec2(%s, %s);", gF.c_str(), dfdx.c_str(), dfdy.c_str()); |
| fsBuilder->codeAppendf("%s = sqrt(dot(%s, %s));", gFM.c_str(), gF.c_str(), gF.c_str()); |
| fsBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;", |
| func.c_str(), fsName, fsName, fsName, fsName, fsName); |
| fsBuilder->codeAppendf("%s = abs(%s);", func.c_str(), func.c_str()); |
| fsBuilder->codeAppendf("%s = %s / %s;", |
| edgeAlpha.c_str(), func.c_str(), gFM.c_str()); |
| fsBuilder->codeAppendf("%s = max(1.0 - %s, 0.0);", |
| edgeAlpha.c_str(), edgeAlpha.c_str()); |
| // Add line below for smooth cubic ramp |
| // fsBuilder->codeAppendf("%s = %s * %s * (3.0 - 2.0 * %s);", |
| // edgeAlpha.c_str(), edgeAlpha.c_str(), edgeAlpha.c_str(), |
| // edgeAlpha.c_str()); |
| break; |
| } |
| case kFillAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("%s = dFdx(%s.xyz);", dklmdx.c_str(), fsName); |
| fsBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), fsName); |
| fsBuilder->codeAppendf("%s =" |
| "3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdx.c_str(), fsName, fsName, dklmdx.c_str(), fsName, |
| dklmdx.c_str(), fsName, dklmdx.c_str()); |
| fsBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdy.c_str(), fsName, fsName, dklmdy.c_str(), fsName, |
| dklmdy.c_str(), fsName, dklmdy.c_str()); |
| fsBuilder->codeAppendf("%s = vec2(%s, %s);", gF.c_str(), dfdx.c_str(), dfdy.c_str()); |
| fsBuilder->codeAppendf("%s = sqrt(dot(%s, %s));", gFM.c_str(), gF.c_str(), gF.c_str()); |
| fsBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;", |
| func.c_str(), fsName, fsName, fsName, fsName, fsName); |
| fsBuilder->codeAppendf("%s = %s / %s;", |
| edgeAlpha.c_str(), func.c_str(), gFM.c_str()); |
| fsBuilder->codeAppendf("%s = clamp(1.0 - %s, 0.0, 1.0);", |
| edgeAlpha.c_str(), edgeAlpha.c_str()); |
| // Add line below for smooth cubic ramp |
| // fsBuilder->codeAppendf("%s = %s * %s * (3.0 - 2.0 * %s);", |
| // edgeAlpha.c_str(), edgeAlpha.c_str(), edgeAlpha.c_str(), |
| // edgeAlpha.c_str()); |
| break; |
| } |
| case kFillBW_GrProcessorEdgeType: { |
| fsBuilder->codeAppendf("%s = %s.x * %s.x * %s.x - %s.y * %s.z;", |
| edgeAlpha.c_str(), fsName, fsName, fsName, fsName, fsName); |
| fsBuilder->codeAppendf("%s = float(%s < 0.0);", edgeAlpha.c_str(), edgeAlpha.c_str()); |
| break; |
| } |
| default: |
| SkFAIL("Shouldn't get here"); |
| } |
| |
| fsBuilder->codeAppendf("%s = %s;", outputColor, |
| (GrGLSLExpr4(inputColor) * GrGLSLExpr1(edgeAlpha.c_str())).c_str()); |
| } |
| |
| void GrGLCubicEffect::GenKey(const GrProcessor& processor, const GrGLCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrCubicEffect& ce = processor.cast<GrCubicEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrCubicEffect::~GrCubicEffect() {} |
| |
| const GrBackendGeometryProcessorFactory& GrCubicEffect::getFactory() const { |
| return GrTBackendGeometryProcessorFactory<GrCubicEffect>::getInstance(); |
| } |
| |
| GrCubicEffect::GrCubicEffect(GrPrimitiveEdgeType edgeType) |
| : fEdgeType(edgeType) |
| , fInCubicCoeffs(this->addVertexAttrib(GrShaderVar("inCubicCoeffs", |
| kVec4f_GrSLType, |
| GrShaderVar::kAttribute_TypeModifier))) { |
| } |
| |
| bool GrCubicEffect::onIsEqual(const GrProcessor& other) const { |
| const GrCubicEffect& ce = other.cast<GrCubicEffect>(); |
| return (ce.fEdgeType == fEdgeType); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrCubicEffect); |
| |
| GrGeometryProcessor* GrCubicEffect::TestCreate(SkRandom* random, |
| GrContext*, |
| const GrDrawTargetCaps& caps, |
| GrTexture*[]) { |
| GrGeometryProcessor* gp; |
| do { |
| GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| random->nextULessThan(kGrProcessorEdgeTypeCnt)); |
| gp = GrCubicEffect::Create(edgeType, caps); |
| } while (NULL == gp); |
| return gp; |
| } |
| |
