| /* |
| * 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/GrGLProcessor.h" |
| #include "gl/GrGLSL.h" |
| #include "gl/GrGLGeometryProcessor.h" |
| #include "gl/builders/GrGLProgramBuilder.h" |
| |
| class GrGLConicEffect : public GrGLGeometryProcessor { |
| public: |
| GrGLConicEffect(const GrGeometryProcessor&, |
| const GrBatchTracker&); |
| |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| static inline void GenKey(const GrGeometryProcessor&, |
| const GrBatchTracker&, |
| const GrGLSLCaps&, |
| GrProcessorKeyBuilder*); |
| |
| virtual void setData(const GrGLProgramDataManager& pdman, |
| const GrPrimitiveProcessor& primProc, |
| const GrBatchTracker& bt) override { |
| const GrConicEffect& ce = primProc.cast<GrConicEffect>(); |
| this->setUniformViewMatrix(pdman, ce.viewMatrix()); |
| |
| if (ce.color() != fColor) { |
| GrGLfloat c[4]; |
| GrColorToRGBAFloat(ce.color(), c); |
| pdman.set4fv(fColorUniform, 1, c); |
| fColor = ce.color(); |
| } |
| |
| if (ce.coverageScale() != 0xff && ce.coverageScale() != fCoverageScale) { |
| pdman.set1f(fCoverageScaleUniform, GrNormalizeByteToFloat(ce.coverageScale())); |
| fCoverageScale = ce.coverageScale(); |
| } |
| } |
| |
| void setTransformData(const GrPrimitiveProcessor& primProc, |
| const GrGLProgramDataManager& pdman, |
| int index, |
| const SkTArray<const GrCoordTransform*, true>& transforms) override { |
| this->setTransformDataHelper<GrConicEffect>(primProc, pdman, index, transforms); |
| } |
| |
| private: |
| GrColor fColor; |
| uint8_t fCoverageScale; |
| GrPrimitiveEdgeType fEdgeType; |
| UniformHandle fColorUniform; |
| UniformHandle fCoverageScaleUniform; |
| |
| typedef GrGLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLConicEffect::GrGLConicEffect(const GrGeometryProcessor& processor, |
| const GrBatchTracker& bt) |
| : fColor(GrColor_ILLEGAL), fCoverageScale(0xff) { |
| const GrConicEffect& ce = processor.cast<GrConicEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLConicEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLGPBuilder* pb = args.fPB; |
| GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder(); |
| const GrConicEffect& gp = args.fGP.cast<GrConicEffect>(); |
| |
| // emit attributes |
| vsBuilder->emitAttributes(gp); |
| |
| GrGLVertToFrag v(kVec4f_GrSLType); |
| args.fPB->addVarying("ConicCoeffs", &v); |
| vsBuilder->codeAppendf("%s = %s;", v.vsOut(), gp.inConicCoeffs()->fName); |
| |
| // Setup pass through color |
| if (!gp.colorIgnored()) { |
| this->setupUniformColor(args.fPB, args.fOutputColor, &fColorUniform); |
| } |
| |
| // Setup position |
| this->setupPosition(pb, gpArgs, gp.inPosition()->fName, gp.viewMatrix()); |
| |
| // emit transforms with position |
| this->emitTransforms(pb, gpArgs->fPositionVar, gp.inPosition()->fName, gp.localMatrix(), |
| args.fTransformsIn, args.fTransformsOut); |
| |
| GrGLFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
| fsBuilder->codeAppend("float edgeAlpha;"); |
| |
| switch (fEdgeType) { |
| case kHairlineAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("vec3 dklmdx = dFdx(%s.xyz);", v.fsIn()); |
| fsBuilder->codeAppendf("vec3 dklmdy = dFdy(%s.xyz);", v.fsIn()); |
| fsBuilder->codeAppendf("float dfdx =" |
| "2.0 * %s.x * dklmdx.x - %s.y * dklmdx.z - %s.z * dklmdx.y;", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppendf("float dfdy =" |
| "2.0 * %s.x * dklmdy.x - %s.y * dklmdy.z - %s.z * dklmdy.y;", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| 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;", v.fsIn(), v.fsIn(), |
| v.fsIn(), v.fsIn()); |
| 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);", v.fsIn()); |
| fsBuilder->codeAppendf("vec3 dklmdy = dFdy(%s.xyz);", v.fsIn()); |
| fsBuilder->codeAppendf("float dfdx =" |
| "2.0 * %s.x * dklmdx.x - %s.y * dklmdx.z - %s.z * dklmdx.y;", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppendf("float dfdy =" |
| "2.0 * %s.x * dklmdy.x - %s.y * dklmdy.z - %s.z * dklmdy.y;", |
| v.fsIn(), v.fsIn(), v.fsIn()); |
| 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;", v.fsIn(), v.fsIn(), |
| v.fsIn(), v.fsIn()); |
| 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;", v.fsIn(), v.fsIn(), |
| v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppend("edgeAlpha = float(edgeAlpha < 0.0);"); |
| break; |
| } |
| default: |
| SkFAIL("Shouldn't get here"); |
| } |
| |
| // TODO should we really be doing this? |
| if (gp.coverageScale() != 0xff) { |
| const char* coverageScale; |
| fCoverageScaleUniform = pb->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
| kFloat_GrSLType, |
| kDefault_GrSLPrecision, |
| "Coverage", |
| &coverageScale); |
| fsBuilder->codeAppendf("%s = vec4(%s * edgeAlpha);", args.fOutputCoverage, coverageScale); |
| } else { |
| fsBuilder->codeAppendf("%s = vec4(edgeAlpha);", args.fOutputCoverage); |
| } |
| } |
| |
| void GrGLConicEffect::GenKey(const GrGeometryProcessor& gp, |
| const GrBatchTracker& bt, |
| const GrGLSLCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrConicEffect& ce = gp.cast<GrConicEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| key |= GrColor_ILLEGAL != ce.color() ? 0x4 : 0x0; |
| key |= 0xff != ce.coverageScale() ? 0x8 : 0x0; |
| key |= ce.usesLocalCoords() && ce.localMatrix().hasPerspective() ? 0x10 : 0x0; |
| key |= ComputePosKey(ce.viewMatrix()) << 5; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrConicEffect::~GrConicEffect() {} |
| |
| void GrConicEffect::getGLProcessorKey(const GrBatchTracker& bt, |
| const GrGLSLCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLConicEffect::GenKey(*this, bt, caps, b); |
| } |
| |
| GrGLPrimitiveProcessor* GrConicEffect::createGLInstance(const GrBatchTracker& bt, |
| const GrGLSLCaps&) const { |
| return SkNEW_ARGS(GrGLConicEffect, (*this, bt)); |
| } |
| |
| GrConicEffect::GrConicEffect(GrColor color, const SkMatrix& viewMatrix, uint8_t coverage, |
| GrPrimitiveEdgeType edgeType, const SkMatrix& localMatrix, |
| bool usesLocalCoords) |
| : fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fLocalMatrix(viewMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fCoverageScale(coverage) |
| , fEdgeType(edgeType) { |
| this->initClassID<GrConicEffect>(); |
| fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType)); |
| fInConicCoeffs = &this->addVertexAttrib(Attribute("inConicCoeffs", |
| kVec4f_GrVertexAttribType)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrConicEffect); |
| |
| GrGeometryProcessor* GrConicEffect::TestCreate(SkRandom* random, |
| GrContext*, |
| const GrCaps& caps, |
| GrTexture*[]) { |
| GrGeometryProcessor* gp; |
| do { |
| GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| random->nextULessThan(kGrProcessorEdgeTypeCnt)); |
| gp = GrConicEffect::Create(GrRandomColor(random), GrTest::TestMatrix(random), |
| edgeType, caps, |
| GrTest::TestMatrix(random), random->nextBool()); |
| } while (NULL == gp); |
| return gp; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Quad |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class GrGLQuadEffect : public GrGLGeometryProcessor { |
| public: |
| GrGLQuadEffect(const GrGeometryProcessor&, |
| const GrBatchTracker&); |
| |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| static inline void GenKey(const GrGeometryProcessor&, |
| const GrBatchTracker&, |
| const GrGLSLCaps&, |
| GrProcessorKeyBuilder*); |
| |
| virtual void setData(const GrGLProgramDataManager& pdman, |
| const GrPrimitiveProcessor& primProc, |
| const GrBatchTracker& bt) override { |
| const GrQuadEffect& qe = primProc.cast<GrQuadEffect>(); |
| this->setUniformViewMatrix(pdman, qe.viewMatrix()); |
| |
| if (qe.color() != fColor) { |
| GrGLfloat c[4]; |
| GrColorToRGBAFloat(qe.color(), c); |
| pdman.set4fv(fColorUniform, 1, c); |
| fColor = qe.color(); |
| } |
| |
| if (qe.coverageScale() != 0xff && qe.coverageScale() != fCoverageScale) { |
| pdman.set1f(fCoverageScaleUniform, GrNormalizeByteToFloat(qe.coverageScale())); |
| fCoverageScale = qe.coverageScale(); |
| } |
| } |
| |
| void setTransformData(const GrPrimitiveProcessor& primProc, |
| const GrGLProgramDataManager& pdman, |
| int index, |
| const SkTArray<const GrCoordTransform*, true>& transforms) override { |
| this->setTransformDataHelper<GrQuadEffect>(primProc, pdman, index, transforms); |
| } |
| |
| private: |
| GrColor fColor; |
| uint8_t fCoverageScale; |
| GrPrimitiveEdgeType fEdgeType; |
| UniformHandle fColorUniform; |
| UniformHandle fCoverageScaleUniform; |
| |
| typedef GrGLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLQuadEffect::GrGLQuadEffect(const GrGeometryProcessor& processor, |
| const GrBatchTracker& bt) |
| : fColor(GrColor_ILLEGAL), fCoverageScale(0xff) { |
| const GrQuadEffect& ce = processor.cast<GrQuadEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLQuadEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLGPBuilder* pb = args.fPB; |
| GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder(); |
| const GrQuadEffect& gp = args.fGP.cast<GrQuadEffect>(); |
| |
| // emit attributes |
| vsBuilder->emitAttributes(gp); |
| |
| GrGLVertToFrag v(kVec4f_GrSLType); |
| args.fPB->addVarying("HairQuadEdge", &v); |
| vsBuilder->codeAppendf("%s = %s;", v.vsOut(), gp.inHairQuadEdge()->fName); |
| |
| // Setup pass through color |
| if (!gp.colorIgnored()) { |
| this->setupUniformColor(args.fPB, args.fOutputColor, &fColorUniform); |
| } |
| |
| // Setup position |
| this->setupPosition(pb, gpArgs, gp.inPosition()->fName, gp.viewMatrix()); |
| |
| // emit transforms with position |
| this->emitTransforms(pb, gpArgs->fPositionVar, gp.inPosition()->fName, gp.localMatrix(), |
| args.fTransformsIn, args.fTransformsOut); |
| |
| GrGLFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
| fsBuilder->codeAppendf("float edgeAlpha;"); |
| |
| switch (fEdgeType) { |
| case kHairlineAA_GrProcessorEdgeType: { |
| SkAssertResult(fsBuilder->enableFeature( |
| GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| fsBuilder->codeAppendf("vec2 duvdx = dFdx(%s.xy);", v.fsIn()); |
| fsBuilder->codeAppendf("vec2 duvdy = dFdy(%s.xy);", v.fsIn()); |
| fsBuilder->codeAppendf("vec2 gF = vec2(2.0 * %s.x * duvdx.x - duvdx.y," |
| " 2.0 * %s.x * duvdy.x - duvdy.y);", |
| v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppendf("edgeAlpha = (%s.x * %s.x - %s.y);", v.fsIn(), v.fsIn(), v.fsIn()); |
| 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);", v.fsIn()); |
| fsBuilder->codeAppendf("vec2 duvdy = dFdy(%s.xy);", v.fsIn()); |
| fsBuilder->codeAppendf("vec2 gF = vec2(2.0 * %s.x * duvdx.x - duvdx.y," |
| " 2.0 * %s.x * duvdy.x - duvdy.y);", |
| v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppendf("edgeAlpha = (%s.x * %s.x - %s.y);", v.fsIn(), v.fsIn(), v.fsIn()); |
| 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);", v.fsIn(), v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppend("edgeAlpha = float(edgeAlpha < 0.0);"); |
| break; |
| } |
| default: |
| SkFAIL("Shouldn't get here"); |
| } |
| |
| if (0xff != gp.coverageScale()) { |
| const char* coverageScale; |
| fCoverageScaleUniform = pb->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
| kFloat_GrSLType, |
| kDefault_GrSLPrecision, |
| "Coverage", |
| &coverageScale); |
| fsBuilder->codeAppendf("%s = vec4(%s * edgeAlpha);", args.fOutputCoverage, coverageScale); |
| } else { |
| fsBuilder->codeAppendf("%s = vec4(edgeAlpha);", args.fOutputCoverage); |
| } |
| } |
| |
| void GrGLQuadEffect::GenKey(const GrGeometryProcessor& gp, |
| const GrBatchTracker& bt, |
| const GrGLSLCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrQuadEffect& ce = gp.cast<GrQuadEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| key |= ce.color() != GrColor_ILLEGAL ? 0x4 : 0x0; |
| key |= ce.coverageScale() != 0xff ? 0x8 : 0x0; |
| key |= ce.usesLocalCoords() && ce.localMatrix().hasPerspective() ? 0x10 : 0x0; |
| key |= ComputePosKey(ce.viewMatrix()) << 5; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrQuadEffect::~GrQuadEffect() {} |
| |
| void GrQuadEffect::getGLProcessorKey(const GrBatchTracker& bt, |
| const GrGLSLCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLQuadEffect::GenKey(*this, bt, caps, b); |
| } |
| |
| GrGLPrimitiveProcessor* GrQuadEffect::createGLInstance(const GrBatchTracker& bt, |
| const GrGLSLCaps&) const { |
| return SkNEW_ARGS(GrGLQuadEffect, (*this, bt)); |
| } |
| |
| GrQuadEffect::GrQuadEffect(GrColor color, const SkMatrix& viewMatrix, uint8_t coverage, |
| GrPrimitiveEdgeType edgeType, const SkMatrix& localMatrix, |
| bool usesLocalCoords) |
| : fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fLocalMatrix(localMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fCoverageScale(coverage) |
| , fEdgeType(edgeType) { |
| this->initClassID<GrQuadEffect>(); |
| fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType)); |
| fInHairQuadEdge = &this->addVertexAttrib(Attribute("inHairQuadEdge", |
| kVec4f_GrVertexAttribType)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrQuadEffect); |
| |
| GrGeometryProcessor* GrQuadEffect::TestCreate(SkRandom* random, |
| GrContext*, |
| const GrCaps& caps, |
| GrTexture*[]) { |
| GrGeometryProcessor* gp; |
| do { |
| GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| random->nextULessThan(kGrProcessorEdgeTypeCnt)); |
| gp = GrQuadEffect::Create(GrRandomColor(random), |
| GrTest::TestMatrix(random), |
| edgeType, caps, |
| GrTest::TestMatrix(random), |
| random->nextBool()); |
| } while (NULL == gp); |
| return gp; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Cubic |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class GrGLCubicEffect : public GrGLGeometryProcessor { |
| public: |
| GrGLCubicEffect(const GrGeometryProcessor&, |
| const GrBatchTracker&); |
| |
| void onEmitCode(EmitArgs&, GrGPArgs*) override; |
| |
| static inline void GenKey(const GrGeometryProcessor&, |
| const GrBatchTracker&, |
| const GrGLSLCaps&, |
| GrProcessorKeyBuilder*); |
| |
| virtual void setData(const GrGLProgramDataManager& pdman, |
| const GrPrimitiveProcessor& primProc, |
| const GrBatchTracker& bt) override { |
| const GrCubicEffect& ce = primProc.cast<GrCubicEffect>(); |
| this->setUniformViewMatrix(pdman, ce.viewMatrix()); |
| |
| if (ce.color() != fColor) { |
| GrGLfloat c[4]; |
| GrColorToRGBAFloat(ce.color(), c); |
| pdman.set4fv(fColorUniform, 1, c); |
| fColor = ce.color(); |
| } |
| } |
| |
| private: |
| GrColor fColor; |
| GrPrimitiveEdgeType fEdgeType; |
| UniformHandle fColorUniform; |
| |
| typedef GrGLGeometryProcessor INHERITED; |
| }; |
| |
| GrGLCubicEffect::GrGLCubicEffect(const GrGeometryProcessor& processor, |
| const GrBatchTracker&) |
| : fColor(GrColor_ILLEGAL) { |
| const GrCubicEffect& ce = processor.cast<GrCubicEffect>(); |
| fEdgeType = ce.getEdgeType(); |
| } |
| |
| void GrGLCubicEffect::onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) { |
| GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder(); |
| const GrCubicEffect& gp = args.fGP.cast<GrCubicEffect>(); |
| |
| // emit attributes |
| vsBuilder->emitAttributes(gp); |
| |
| GrGLVertToFrag v(kVec4f_GrSLType); |
| args.fPB->addVarying("CubicCoeffs", &v, kHigh_GrSLPrecision); |
| vsBuilder->codeAppendf("%s = %s;", v.vsOut(), gp.inCubicCoeffs()->fName); |
| |
| // Setup pass through color |
| if (!gp.colorIgnored()) { |
| this->setupUniformColor(args.fPB, args.fOutputColor, &fColorUniform); |
| } |
| |
| // Setup position |
| this->setupPosition(args.fPB, gpArgs, gp.inPosition()->fName, gp.viewMatrix()); |
| |
| // emit transforms with position |
| this->emitTransforms(args.fPB, gpArgs->fPositionVar, gp.inPosition()->fName, args.fTransformsIn, |
| args.fTransformsOut); |
| |
| GrGLFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
| |
| GrGLShaderVar edgeAlpha("edgeAlpha", kFloat_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar dklmdx("dklmdx", kVec3f_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar dklmdy("dklmdy", kVec3f_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar dfdx("dfdx", kFloat_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar dfdy("dfdy", kFloat_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar gF("gF", kVec2f_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar gFM("gFM", kFloat_GrSLType, 0, kHigh_GrSLPrecision); |
| GrGLShaderVar func("func", kFloat_GrSLType, 0, kHigh_GrSLPrecision); |
| |
| 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(), v.fsIn()); |
| fsBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), v.fsIn()); |
| fsBuilder->codeAppendf("%s = 3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdx.c_str(), v.fsIn(), v.fsIn(), dklmdx.c_str(), v.fsIn(), |
| dklmdx.c_str(), v.fsIn(), 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(), v.fsIn(), v.fsIn(), dklmdy.c_str(), v.fsIn(), |
| dklmdy.c_str(), v.fsIn(), 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(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn()); |
| 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(), v.fsIn()); |
| fsBuilder->codeAppendf("%s = dFdy(%s.xyz);", dklmdy.c_str(), v.fsIn()); |
| fsBuilder->codeAppendf("%s =" |
| "3.0 * %s.x * %s.x * %s.x - %s.y * %s.z - %s.z * %s.y;", |
| dfdx.c_str(), v.fsIn(), v.fsIn(), dklmdx.c_str(), v.fsIn(), |
| dklmdx.c_str(), v.fsIn(), 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(), v.fsIn(), v.fsIn(), dklmdy.c_str(), v.fsIn(), |
| dklmdy.c_str(), v.fsIn(), 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(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn()); |
| 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(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn(), v.fsIn()); |
| fsBuilder->codeAppendf("%s = float(%s < 0.0);", edgeAlpha.c_str(), edgeAlpha.c_str()); |
| break; |
| } |
| default: |
| SkFAIL("Shouldn't get here"); |
| } |
| |
| |
| fsBuilder->codeAppendf("%s = vec4(%s);", args.fOutputCoverage, edgeAlpha.c_str()); |
| } |
| |
| void GrGLCubicEffect::GenKey(const GrGeometryProcessor& gp, |
| const GrBatchTracker& bt, |
| const GrGLSLCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrCubicEffect& ce = gp.cast<GrCubicEffect>(); |
| uint32_t key = ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| key |= ce.color() != GrColor_ILLEGAL ? 0x4 : 0x8; |
| key |= ComputePosKey(ce.viewMatrix()) << 5; |
| b->add32(key); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrCubicEffect::~GrCubicEffect() {} |
| |
| void GrCubicEffect::getGLProcessorKey(const GrBatchTracker& bt, |
| const GrGLSLCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLCubicEffect::GenKey(*this, bt, caps, b); |
| } |
| |
| GrGLPrimitiveProcessor* GrCubicEffect::createGLInstance(const GrBatchTracker& bt, |
| const GrGLSLCaps&) const { |
| return SkNEW_ARGS(GrGLCubicEffect, (*this, bt)); |
| } |
| |
| GrCubicEffect::GrCubicEffect(GrColor color, const SkMatrix& viewMatrix, |
| GrPrimitiveEdgeType edgeType) |
| : fColor(color) |
| , fViewMatrix(viewMatrix) |
| , fEdgeType(edgeType) { |
| this->initClassID<GrCubicEffect>(); |
| fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType)); |
| fInCubicCoeffs = &this->addVertexAttrib(Attribute("inCubicCoeffs", |
| kVec4f_GrVertexAttribType)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrCubicEffect); |
| |
| GrGeometryProcessor* GrCubicEffect::TestCreate(SkRandom* random, |
| GrContext*, |
| const GrCaps& caps, |
| GrTexture*[]) { |
| GrGeometryProcessor* gp; |
| do { |
| GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| random->nextULessThan(kGrProcessorEdgeTypeCnt)); |
| gp = GrCubicEffect::Create(GrRandomColor(random), |
| GrTest::TestMatrix(random), edgeType, caps); |
| } while (NULL == gp); |
| return gp; |
| } |
| |
