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 GrLinearGradientLayout.fp; do not modify.
10  **************************************************************************************************/
11 #include "GrLinearGradientLayout.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 GrGLSLLinearGradientLayout : public GrGLSLFragmentProcessor {
19 public:
20     GrGLSLLinearGradientLayout() {}
21     void emitCode(EmitArgs& args) override {
22         GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
23         const GrLinearGradientLayout& _outer = args.fFp.cast<GrLinearGradientLayout>();
24         (void)_outer;
25         auto gradientMatrix = _outer.gradientMatrix();
26         (void)gradientMatrix;
27         SkString sk_TransformedCoords2D_0 = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
28         fragBuilder->codeAppendf(
29                 "half t = half(%s.x) + 1.0000000000000001e-05;\n%s = half4(t, 1.0, 0.0, 0.0);\n",
30                 sk_TransformedCoords2D_0.c_str(),
31                 args.fOutputColor);
32     }
33 
34 private:
35     void onSetData(const GrGLSLProgramDataManager& pdman,
36                    const GrFragmentProcessor& _proc) override {}
37 };
38 GrGLSLFragmentProcessor* GrLinearGradientLayout::onCreateGLSLInstance() const {
39     return new GrGLSLLinearGradientLayout();
40 }
41 void GrLinearGradientLayout::onGetGLSLProcessorKey(const GrShaderCaps& caps,
42                                                    GrProcessorKeyBuilder* b) const {}
43 bool GrLinearGradientLayout::onIsEqual(const GrFragmentProcessor& other) const {
44     const GrLinearGradientLayout& that = other.cast<GrLinearGradientLayout>();
45     (void)that;
46     if (fGradientMatrix != that.fGradientMatrix) return false;
47     return true;
48 }
49 GrLinearGradientLayout::GrLinearGradientLayout(const GrLinearGradientLayout& src)
50         : INHERITED(kGrLinearGradientLayout_ClassID, src.optimizationFlags())
51         , fGradientMatrix(src.fGradientMatrix)
52         , fCoordTransform0(src.fCoordTransform0) {
53     this->addCoordTransform(&fCoordTransform0);
54 }
55 std::unique_ptr<GrFragmentProcessor> GrLinearGradientLayout::clone() const {
56     return std::unique_ptr<GrFragmentProcessor>(new GrLinearGradientLayout(*this));
57 }
58 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrLinearGradientLayout);
59 #if GR_TEST_UTILS
60 std::unique_ptr<GrFragmentProcessor> GrLinearGradientLayout::TestCreate(GrProcessorTestData* d) {
61     SkScalar scale = GrGradientShader::RandomParams::kGradientScale;
62     SkPoint points[] = {
63             {d->fRandom->nextRangeScalar(0.0f, scale), d->fRandom->nextRangeScalar(0.0f, scale)},
64             {d->fRandom->nextRangeScalar(0.0f, scale), d->fRandom->nextRangeScalar(0.0f, scale)}};
65 
66     GrGradientShader::RandomParams params(d->fRandom);
67     auto shader = params.fUseColors4f
68                           ? SkGradientShader::MakeLinear(points, params.fColors4f,
69                                                          params.fColorSpace, params.fStops,
70                                                          params.fColorCount, params.fTileMode)
71                           : SkGradientShader::MakeLinear(points, params.fColors, params.fStops,
72                                                          params.fColorCount, params.fTileMode);
73     GrTest::TestAsFPArgs asFPArgs(d);
74     std::unique_ptr<GrFragmentProcessor> fp = as_SB(shader)->asFragmentProcessor(asFPArgs.args());
75     GrAlwaysAssert(fp);
76     return fp;
77 }
78 #endif
79 
80 std::unique_ptr<GrFragmentProcessor> GrLinearGradientLayout::Make(const SkLinearGradient& grad,
81                                                                   const GrFPArgs& args) {
82     SkMatrix matrix;
83     if (!grad.totalLocalMatrix(args.fPreLocalMatrix, args.fPostLocalMatrix)->invert(&matrix)) {
84         return nullptr;
85     }
86     matrix.postConcat(grad.getGradientMatrix());
87     return std::unique_ptr<GrFragmentProcessor>(new GrLinearGradientLayout(matrix));
88 }
89