Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 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 | /* |
| 9 | * This file was autogenerated from GrEllipseEffect.fp; do not modify. |
| 10 | */ |
| 11 | #include "GrEllipseEffect.h" |
| 12 | #if SK_SUPPORT_GPU |
| 13 | #include "glsl/GrGLSLColorSpaceXformHelper.h" |
| 14 | #include "glsl/GrGLSLFragmentProcessor.h" |
| 15 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 16 | #include "glsl/GrGLSLProgramBuilder.h" |
| 17 | #include "SkSLCPP.h" |
| 18 | #include "SkSLUtil.h" |
| 19 | class GrGLSLEllipseEffect : public GrGLSLFragmentProcessor { |
| 20 | public: |
| 21 | GrGLSLEllipseEffect() {} |
| 22 | void emitCode(EmitArgs& args) override { |
| 23 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| 24 | const GrEllipseEffect& _outer = args.fFp.cast<GrEllipseEffect>(); |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 25 | (void)_outer; |
| 26 | prevRadii = vec2(-1.0); |
| 27 | useScale = sk_Caps.floatPrecisionVaries; |
| 28 | fEllipseVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kVec4f_GrSLType, |
| 29 | kHigh_GrSLPrecision, "ellipse"); |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 30 | if (useScale) { |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 31 | fScaleVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kVec2f_GrSLType, |
| 32 | kDefault_GrSLPrecision, "scale"); |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 33 | } |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 34 | fragBuilder->codeAppendf( |
| 35 | "vec2 prevCenter;\nvec2 prevRadii = vec2(%f, %f);\nbool useScale = %s;\nvec2 d = " |
| 36 | "sk_FragCoord.xy - %s.xy;\n@if (useScale) {\n d *= %s.y;\n}\nvec2 Z = d * " |
| 37 | "%s.zw;\nfloat implicit = dot(Z, d) - 1.0;\nfloat grad_dot = 4.0 * dot(Z, " |
| 38 | "Z);\ngrad_dot = max(grad_dot, 0.0001);\nfloat approx_dist = implicit * " |
| 39 | "inversesqrt(grad_dot);\n@if (useScale) {\n approx_dist *= %s.x;\n}\nfloat " |
| 40 | "alpha;\n@switch (%d) {\n case 0:\n alpha = approx_dist > 0.0 ? 0.0 : " |
| 41 | "1.0;\n break;\n case 1:\n alpha = clamp(0.5 - approx_dist, 0.0, " |
| 42 | "1.0);\n break;\n case 2:\n alpha = approx_dist > 0.0 ? 1.0 : " |
| 43 | "0.0;\n break;\n case 3:\n alpha = clamp(0.5 + approx_dist, 0.0, " |
| 44 | "1.0);\n break;\n default:\n discard;\n}\n%s = %s * alpha;\n", |
| 45 | prevRadii.fX, prevRadii.fY, (useScale ? "true" : "false"), |
| 46 | args.fUniformHandler->getUniformCStr(fEllipseVar), |
| 47 | fScaleVar.isValid() ? args.fUniformHandler->getUniformCStr(fScaleVar) : "vec2(0.0)", |
| 48 | args.fUniformHandler->getUniformCStr(fEllipseVar), |
| 49 | fScaleVar.isValid() ? args.fUniformHandler->getUniformCStr(fScaleVar) : "vec2(0.0)", |
| 50 | _outer.edgeType(), args.fOutputColor, |
| 51 | args.fInputColor ? args.fInputColor : "vec4(1)"); |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 52 | } |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 53 | |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 54 | private: |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 55 | void onSetData(const GrGLSLProgramDataManager& pdman, |
| 56 | const GrFragmentProcessor& _proc) override { |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 57 | const GrEllipseEffect& _outer = _proc.cast<GrEllipseEffect>(); |
| 58 | auto edgeType = _outer.edgeType(); |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 59 | (void)edgeType; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 60 | auto center = _outer.center(); |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 61 | (void)center; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 62 | auto radii = _outer.radii(); |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 63 | (void)radii; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 64 | UniformHandle& ellipse = fEllipseVar; |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 65 | (void)ellipse; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 66 | UniformHandle& scale = fScaleVar; |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 67 | (void)scale; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 68 | |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 69 | if (radii != prevRadii || center != prevCenter) { |
| 70 | float invRXSqd; |
| 71 | float invRYSqd; |
| 72 | |
| 73 | if (scale.isValid()) { |
| 74 | if (radii.fX > radii.fY) { |
| 75 | invRXSqd = 1.f; |
| 76 | invRYSqd = (radii.fX * radii.fX) / (radii.fY * radii.fY); |
| 77 | pdman.set2f(scale, radii.fX, 1.f / radii.fX); |
| 78 | } else { |
| 79 | invRXSqd = (radii.fY * radii.fY) / (radii.fX * radii.fX); |
| 80 | invRYSqd = 1.f; |
| 81 | pdman.set2f(scale, radii.fY, 1.f / radii.fY); |
| 82 | } |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 83 | } else { |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 84 | invRXSqd = 1.f / (radii.fX * radii.fX); |
| 85 | invRYSqd = 1.f / (radii.fY * radii.fY); |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 86 | } |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 87 | pdman.set4f(ellipse, center.fX, center.fY, invRXSqd, invRYSqd); |
| 88 | prevCenter = center; |
| 89 | prevRadii = radii; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 90 | } |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 91 | } |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 92 | SkPoint prevCenter; |
| 93 | SkPoint prevRadii; |
| 94 | bool useScale; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 95 | UniformHandle fEllipseVar; |
| 96 | UniformHandle fScaleVar; |
| 97 | }; |
| 98 | GrGLSLFragmentProcessor* GrEllipseEffect::onCreateGLSLInstance() const { |
| 99 | return new GrGLSLEllipseEffect(); |
| 100 | } |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 101 | void GrEllipseEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, |
| 102 | GrProcessorKeyBuilder* b) const { |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 103 | b->add32(fEdgeType); |
| 104 | } |
| 105 | bool GrEllipseEffect::onIsEqual(const GrFragmentProcessor& other) const { |
| 106 | const GrEllipseEffect& that = other.cast<GrEllipseEffect>(); |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 107 | (void)that; |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 108 | if (fEdgeType != that.fEdgeType) return false; |
| 109 | if (fCenter != that.fCenter) return false; |
| 110 | if (fRadii != that.fRadii) return false; |
| 111 | return true; |
| 112 | } |
| 113 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrEllipseEffect); |
| 114 | #if GR_TEST_UTILS |
| 115 | sk_sp<GrFragmentProcessor> GrEllipseEffect::TestCreate(GrProcessorTestData* testData) { |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 116 | SkPoint center; |
| 117 | center.fX = testData->fRandom->nextRangeScalar(0.f, 1000.f); |
| 118 | center.fY = testData->fRandom->nextRangeScalar(0.f, 1000.f); |
| 119 | SkScalar rx = testData->fRandom->nextRangeF(0.f, 1000.f); |
| 120 | SkScalar ry = testData->fRandom->nextRangeF(0.f, 1000.f); |
| 121 | GrPrimitiveEdgeType et; |
| 122 | do { |
Ethan Nicholas | b7e8c3b | 2017-07-19 13:54:20 -0400 | [diff] [blame^] | 123 | et = (GrPrimitiveEdgeType)testData->fRandom->nextULessThan(kGrProcessorEdgeTypeCnt); |
Ethan Nicholas | 420f156 | 2017-07-14 13:11:38 -0400 | [diff] [blame] | 124 | } while (kHairlineAA_GrProcessorEdgeType == et); |
| 125 | return GrEllipseEffect::Make(et, center, SkPoint::Make(rx, ry)); |
| 126 | } |
| 127 | #endif |
| 128 | #endif |