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 GrClampedGradientEffect.fp; do not modify.
10  **************************************************************************************************/
11 #include "GrClampedGradientEffect.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 GrGLSLClampedGradientEffect : public GrGLSLFragmentProcessor {
19 public:
20     GrGLSLClampedGradientEffect() {}
21     void emitCode(EmitArgs& args) override {
22         GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
23         const GrClampedGradientEffect& _outer = args.fFp.cast<GrClampedGradientEffect>();
24         (void)_outer;
25         auto leftBorderColor = _outer.leftBorderColor();
26         (void)leftBorderColor;
27         auto rightBorderColor = _outer.rightBorderColor();
28         (void)rightBorderColor;
29         auto makePremul = _outer.makePremul();
30         (void)makePremul;
31         auto colorsAreOpaque = _outer.colorsAreOpaque();
32         (void)colorsAreOpaque;
33         fLeftBorderColorVar = args.fUniformHandler->addUniform(
34                 kFragment_GrShaderFlag, kHalf4_GrSLType, kDefault_GrSLPrecision, "leftBorderColor");
35         fRightBorderColorVar =
36                 args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf4_GrSLType,
37                                                  kDefault_GrSLPrecision, "rightBorderColor");
38         SkString _child1("_child1");
39         this->emitChild(1, &_child1, args);
40         fragBuilder->codeAppendf(
41                 "half4 t = %s;\nif (!%s && t.y < 0.0) {\n    %s = half4(0.0);\n} else if (t.x < "
42                 "0.0) {\n    %s = %s;\n} else if (float(t.x) > 1.0) {\n    %s = %s;\n} else {",
43                 _child1.c_str(),
44                 (_outer.childProcessor(1).preservesOpaqueInput() ? "true" : "false"),
45                 args.fOutputColor, args.fOutputColor,
46                 args.fUniformHandler->getUniformCStr(fLeftBorderColorVar), args.fOutputColor,
47                 args.fUniformHandler->getUniformCStr(fRightBorderColorVar));
48         SkString _input0("t");
49         SkString _child0("_child0");
50         this->emitChild(0, _input0.c_str(), &_child0, args);
51         fragBuilder->codeAppendf("\n    %s = %s;\n}\n@if (%s) {\n    %s.xyz *= %s.w;\n}\n",
52                                  args.fOutputColor, _child0.c_str(),
53                                  (_outer.makePremul() ? "true" : "false"), args.fOutputColor,
54                                  args.fOutputColor);
55     }
56 
57 private:
58     void onSetData(const GrGLSLProgramDataManager& pdman,
59                    const GrFragmentProcessor& _proc) override {
60         const GrClampedGradientEffect& _outer = _proc.cast<GrClampedGradientEffect>();
61         {
62             const SkPMColor4f& leftBorderColorValue = _outer.leftBorderColor();
63             if (fLeftBorderColorPrev != leftBorderColorValue) {
64                 fLeftBorderColorPrev = leftBorderColorValue;
65                 pdman.set4fv(fLeftBorderColorVar, 1, leftBorderColorValue.vec());
66             }
67             const SkPMColor4f& rightBorderColorValue = _outer.rightBorderColor();
68             if (fRightBorderColorPrev != rightBorderColorValue) {
69                 fRightBorderColorPrev = rightBorderColorValue;
70                 pdman.set4fv(fRightBorderColorVar, 1, rightBorderColorValue.vec());
71             }
72         }
73     }
74     SkPMColor4f fLeftBorderColorPrev = {SK_FloatNaN, SK_FloatNaN, SK_FloatNaN, SK_FloatNaN};
75     SkPMColor4f fRightBorderColorPrev = {SK_FloatNaN, SK_FloatNaN, SK_FloatNaN, SK_FloatNaN};
76     UniformHandle fLeftBorderColorVar;
77     UniformHandle fRightBorderColorVar;
78 };
79 GrGLSLFragmentProcessor* GrClampedGradientEffect::onCreateGLSLInstance() const {
80     return new GrGLSLClampedGradientEffect();
81 }
82 void GrClampedGradientEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
83                                                     GrProcessorKeyBuilder* b) const {
84     b->add32((int32_t)fMakePremul);
85 }
86 bool GrClampedGradientEffect::onIsEqual(const GrFragmentProcessor& other) const {
87     const GrClampedGradientEffect& that = other.cast<GrClampedGradientEffect>();
88     (void)that;
89     if (fLeftBorderColor != that.fLeftBorderColor) return false;
90     if (fRightBorderColor != that.fRightBorderColor) return false;
91     if (fMakePremul != that.fMakePremul) return false;
92     if (fColorsAreOpaque != that.fColorsAreOpaque) return false;
93     return true;
94 }
95 GrClampedGradientEffect::GrClampedGradientEffect(const GrClampedGradientEffect& src)
96         : INHERITED(kGrClampedGradientEffect_ClassID, src.optimizationFlags())
97         , fLeftBorderColor(src.fLeftBorderColor)
98         , fRightBorderColor(src.fRightBorderColor)
99         , fMakePremul(src.fMakePremul)
100         , fColorsAreOpaque(src.fColorsAreOpaque) {
101     this->registerChildProcessor(src.childProcessor(0).clone());
102     this->registerChildProcessor(src.childProcessor(1).clone());
103 }
104 std::unique_ptr<GrFragmentProcessor> GrClampedGradientEffect::clone() const {
105     return std::unique_ptr<GrFragmentProcessor>(new GrClampedGradientEffect(*this));
106 }
107