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 GrDitherEffect.fp; do not modify.
10 **************************************************************************************************/
11 #include "GrDitherEffect.h"
12 #if SK_SUPPORT_GPU
13 #include "glsl/GrGLSLFragmentProcessor.h"
14 #include "glsl/GrGLSLFragmentShaderBuilder.h"
15 #include "glsl/GrGLSLProgramBuilder.h"
16 #include "GrTexture.h"
17 #include "SkSLCPP.h"
18 #include "SkSLUtil.h"
19 class GrGLSLDitherEffect : public GrGLSLFragmentProcessor {
20 public:
GrGLSLDitherEffect()21 GrGLSLDitherEffect() {}
emitCode(EmitArgs & args)22 void emitCode(EmitArgs& args) override {
23 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
24 const GrDitherEffect& _outer = args.fFp.cast<GrDitherEffect>();
25 (void)_outer;
26 auto rangeType = _outer.rangeType();
27 (void)rangeType;
28 fragBuilder->codeAppendf(
29 "half value;\nhalf range;\n@switch (%d) {\n case 0:\n range = "
30 "0.0039215686274509803;\n break;\n case 1:\n range = "
31 "0.015873015873015872;\n break;\n default:\n range = "
32 "0.066666666666666666;\n break;\n}\n@if (sk_Caps.integerSupport) {\n "
33 "uint x = uint(sk_FragCoord.x);\n uint y = uint(sk_FragCoord.y);\n uint m = "
34 "(((((y & 1) << 5 | (x & 1) << 4) | (y & 2) << 2) | (x & 2) << 1) | (y & 4) >> 1) "
35 "| (x & 4) >> 2;\n value = float(float(half(m)) / 64.0) - 0.4",
36 _outer.rangeType());
37 fragBuilder->codeAppendf(
38 "921875;\n} else {\n half4 modValues = half4(mod(sk_FragCoord.xyxy, "
39 "float4(half4(2.0, 2.0, 4.0, 4.0))));\n half4 stepValues = "
40 "half4(step(float4(modValues), float4(half4(1.0, 1.0, 2.0, 2.0))));\n value = "
41 "float(dot(stepValues, half4(0.5, 0.25, 0.125, 0.0625))) - 0.46875;\n}\n%s = "
42 "half4(clamp(float3(%s.xyz + value * range), 0.0, float(%s.w)), %s.w);\n",
43 args.fOutputColor, args.fInputColor ? args.fInputColor : "half4(1)",
44 args.fInputColor ? args.fInputColor : "half4(1)",
45 args.fInputColor ? args.fInputColor : "half4(1)");
46 }
47
48 private:
onSetData(const GrGLSLProgramDataManager & pdman,const GrFragmentProcessor & _proc)49 void onSetData(const GrGLSLProgramDataManager& pdman,
50 const GrFragmentProcessor& _proc) override {}
51 };
onCreateGLSLInstance() const52 GrGLSLFragmentProcessor* GrDitherEffect::onCreateGLSLInstance() const {
53 return new GrGLSLDitherEffect();
54 }
onGetGLSLProcessorKey(const GrShaderCaps & caps,GrProcessorKeyBuilder * b) const55 void GrDitherEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
56 GrProcessorKeyBuilder* b) const {
57 b->add32((int32_t)fRangeType);
58 }
onIsEqual(const GrFragmentProcessor & other) const59 bool GrDitherEffect::onIsEqual(const GrFragmentProcessor& other) const {
60 const GrDitherEffect& that = other.cast<GrDitherEffect>();
61 (void)that;
62 if (fRangeType != that.fRangeType) return false;
63 return true;
64 }
GrDitherEffect(const GrDitherEffect & src)65 GrDitherEffect::GrDitherEffect(const GrDitherEffect& src)
66 : INHERITED(kGrDitherEffect_ClassID, src.optimizationFlags()), fRangeType(src.fRangeType) {}
clone() const67 std::unique_ptr<GrFragmentProcessor> GrDitherEffect::clone() const {
68 return std::unique_ptr<GrFragmentProcessor>(new GrDitherEffect(*this));
69 }
70 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrDitherEffect);
71 #if GR_TEST_UTILS
TestCreate(GrProcessorTestData * testData)72 std::unique_ptr<GrFragmentProcessor> GrDitherEffect::TestCreate(GrProcessorTestData* testData) {
73 float range = testData->fRandom->nextRangeF(0.001f, 0.05f);
74 return std::unique_ptr<GrFragmentProcessor>(new GrDitherEffect(range));
75 }
76 #endif
77 #endif
78