1 /*
2 * Copyright 2018 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 GrSweepGradientLayout.fp; do not modify.
10 **************************************************************************************************/
11 #include "GrSweepGradientLayout.h"
12 #include "glsl/GrGLSLFragmentProcessor.h"
13 #include "glsl/GrGLSLFragmentShaderBuilder.h"
14 #include "glsl/GrGLSLProgramBuilder.h"
15 #include "GrTexture.h"
16 #include "SkSLCPP.h"
17 #include "SkSLUtil.h"
18 class GrGLSLSweepGradientLayout : public GrGLSLFragmentProcessor {
19 public:
GrGLSLSweepGradientLayout()20 GrGLSLSweepGradientLayout() {}
emitCode(EmitArgs & args)21 void emitCode(EmitArgs& args) override {
22 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
23 const GrSweepGradientLayout& _outer = args.fFp.cast<GrSweepGradientLayout>();
24 (void)_outer;
25 auto gradientMatrix = _outer.gradientMatrix();
26 (void)gradientMatrix;
27 auto bias = _outer.bias();
28 (void)bias;
29 auto scale = _outer.scale();
30 (void)scale;
31 fBiasVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf_GrSLType, "bias");
32 fScaleVar =
33 args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf_GrSLType, "scale");
34 SkString sk_TransformedCoords2D_0 = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
35 fragBuilder->codeAppendf(
36 "half angle;\nif (sk_Caps.atan2ImplementedAsAtanYOverX) {\n angle = half(2.0 * "
37 "atan(-%s.y, length(%s) - %s.x));\n} else {\n angle = half(atan(-%s.y, "
38 "-%s.x));\n}\nhalf t = ((angle * 0.15915494309180001 + 0.5) + %s) * %s;\n%s = "
39 "half4(t, 1.0, 0.0, 0.0);\n",
40 sk_TransformedCoords2D_0.c_str(), sk_TransformedCoords2D_0.c_str(),
41 sk_TransformedCoords2D_0.c_str(), sk_TransformedCoords2D_0.c_str(),
42 sk_TransformedCoords2D_0.c_str(), args.fUniformHandler->getUniformCStr(fBiasVar),
43 args.fUniformHandler->getUniformCStr(fScaleVar), args.fOutputColor);
44 }
45
46 private:
onSetData(const GrGLSLProgramDataManager & pdman,const GrFragmentProcessor & _proc)47 void onSetData(const GrGLSLProgramDataManager& pdman,
48 const GrFragmentProcessor& _proc) override {
49 const GrSweepGradientLayout& _outer = _proc.cast<GrSweepGradientLayout>();
50 {
51 float biasValue = _outer.bias();
52 if (fBiasPrev != biasValue) {
53 fBiasPrev = biasValue;
54 pdman.set1f(fBiasVar, biasValue);
55 }
56 float scaleValue = _outer.scale();
57 if (fScalePrev != scaleValue) {
58 fScalePrev = scaleValue;
59 pdman.set1f(fScaleVar, scaleValue);
60 }
61 }
62 }
63 float fBiasPrev = SK_FloatNaN;
64 float fScalePrev = SK_FloatNaN;
65 UniformHandle fBiasVar;
66 UniformHandle fScaleVar;
67 };
onCreateGLSLInstance() const68 GrGLSLFragmentProcessor* GrSweepGradientLayout::onCreateGLSLInstance() const {
69 return new GrGLSLSweepGradientLayout();
70 }
onGetGLSLProcessorKey(const GrShaderCaps & caps,GrProcessorKeyBuilder * b) const71 void GrSweepGradientLayout::onGetGLSLProcessorKey(const GrShaderCaps& caps,
72 GrProcessorKeyBuilder* b) const {}
onIsEqual(const GrFragmentProcessor & other) const73 bool GrSweepGradientLayout::onIsEqual(const GrFragmentProcessor& other) const {
74 const GrSweepGradientLayout& that = other.cast<GrSweepGradientLayout>();
75 (void)that;
76 if (fGradientMatrix != that.fGradientMatrix) return false;
77 if (fBias != that.fBias) return false;
78 if (fScale != that.fScale) return false;
79 return true;
80 }
GrSweepGradientLayout(const GrSweepGradientLayout & src)81 GrSweepGradientLayout::GrSweepGradientLayout(const GrSweepGradientLayout& src)
82 : INHERITED(kGrSweepGradientLayout_ClassID, src.optimizationFlags())
83 , fGradientMatrix(src.fGradientMatrix)
84 , fBias(src.fBias)
85 , fScale(src.fScale)
86 , fCoordTransform0(src.fCoordTransform0) {
87 this->addCoordTransform(&fCoordTransform0);
88 }
clone() const89 std::unique_ptr<GrFragmentProcessor> GrSweepGradientLayout::clone() const {
90 return std::unique_ptr<GrFragmentProcessor>(new GrSweepGradientLayout(*this));
91 }
92 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSweepGradientLayout);
93 #if GR_TEST_UTILS
TestCreate(GrProcessorTestData * d)94 std::unique_ptr<GrFragmentProcessor> GrSweepGradientLayout::TestCreate(GrProcessorTestData* d) {
95 SkScalar scale = GrGradientShader::RandomParams::kGradientScale;
96 SkPoint center = {d->fRandom->nextRangeScalar(0.0f, scale),
97 d->fRandom->nextRangeScalar(0.0f, scale)};
98
99 GrGradientShader::RandomParams params(d->fRandom);
100 auto shader = params.fUseColors4f
101 ? SkGradientShader::MakeSweep(center.fX, center.fY, params.fColors4f,
102 params.fColorSpace, params.fStops,
103 params.fColorCount)
104 : SkGradientShader::MakeSweep(center.fX, center.fY, params.fColors,
105 params.fStops, params.fColorCount);
106 GrTest::TestAsFPArgs asFPArgs(d);
107 std::unique_ptr<GrFragmentProcessor> fp = as_SB(shader)->asFragmentProcessor(asFPArgs.args());
108 GrAlwaysAssert(fp);
109 return fp;
110 }
111 #endif
112
Make(const SkSweepGradient & grad,const GrFPArgs & args)113 std::unique_ptr<GrFragmentProcessor> GrSweepGradientLayout::Make(const SkSweepGradient& grad,
114 const GrFPArgs& args) {
115 SkMatrix matrix;
116 if (!grad.totalLocalMatrix(args.fPreLocalMatrix, args.fPostLocalMatrix)->invert(&matrix)) {
117 return nullptr;
118 }
119 matrix.postConcat(grad.getGradientMatrix());
120 return std::unique_ptr<GrFragmentProcessor>(
121 new GrSweepGradientLayout(matrix, grad.getTBias(), grad.getTScale()));
122 }
123