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 GrRRectBlurEffect.fp; do not modify.
10 **************************************************************************************************/
11 #include "GrRRectBlurEffect.h"
12
Make(GrContext * context,float sigma,float xformedSigma,const SkRRect & srcRRect,const SkRRect & devRRect)13 std::unique_ptr<GrFragmentProcessor> GrRRectBlurEffect::Make(GrContext* context, float sigma,
14 float xformedSigma,
15 const SkRRect& srcRRect,
16 const SkRRect& devRRect) {
17 SkASSERT(!SkRRectPriv::IsCircle(devRRect) &&
18 !devRRect.isRect()); // Should've been caught up-stream
19
20 // TODO: loosen this up
21 if (!SkRRectPriv::IsSimpleCircular(devRRect)) {
22 return nullptr;
23 }
24
25 // Make sure we can successfully ninepatch this rrect -- the blur sigma has to be
26 // sufficiently small relative to both the size of the corner radius and the
27 // width (and height) of the rrect.
28 SkRRect rrectToDraw;
29 SkISize size;
30 SkScalar ignored[kSkBlurRRectMaxDivisions];
31 int ignoredSize;
32 uint32_t ignored32;
33
34 bool ninePatchable = SkComputeBlurredRRectParams(
35 srcRRect, devRRect, SkRect::MakeEmpty(), sigma, xformedSigma, &rrectToDraw, &size,
36 ignored, ignored, ignored, ignored, &ignoredSize, &ignoredSize, &ignored32);
37 if (!ninePatchable) {
38 return nullptr;
39 }
40
41 sk_sp<GrTextureProxy> mask(
42 find_or_create_rrect_blur_mask(context, rrectToDraw, size, xformedSigma));
43 if (!mask) {
44 return nullptr;
45 }
46
47 return std::unique_ptr<GrFragmentProcessor>(
48 new GrRRectBlurEffect(xformedSigma, devRRect.getBounds(),
49 SkRRectPriv::GetSimpleRadii(devRRect).fX, std::move(mask)));
50 }
51 #include "glsl/GrGLSLFragmentProcessor.h"
52 #include "glsl/GrGLSLFragmentShaderBuilder.h"
53 #include "glsl/GrGLSLProgramBuilder.h"
54 #include "GrTexture.h"
55 #include "SkSLCPP.h"
56 #include "SkSLUtil.h"
57 class GrGLSLRRectBlurEffect : public GrGLSLFragmentProcessor {
58 public:
GrGLSLRRectBlurEffect()59 GrGLSLRRectBlurEffect() {}
emitCode(EmitArgs & args)60 void emitCode(EmitArgs& args) override {
61 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
62 const GrRRectBlurEffect& _outer = args.fFp.cast<GrRRectBlurEffect>();
63 (void)_outer;
64 auto sigma = _outer.sigma();
65 (void)sigma;
66 auto rect = _outer.rect();
67 (void)rect;
68 auto cornerRadius = _outer.cornerRadius();
69 (void)cornerRadius;
70 fCornerRadiusVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kFloat_GrSLType,
71 kDefault_GrSLPrecision, "cornerRadius");
72 fProxyRectVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kFloat4_GrSLType,
73 kDefault_GrSLPrecision, "proxyRect");
74 fBlurRadiusVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kHalf_GrSLType,
75 kDefault_GrSLPrecision, "blurRadius");
76 fragBuilder->codeAppendf(
77 "\nhalf2 translatedFragPos = half2(sk_FragCoord.xy - %s.xy);\nhalf threshold = "
78 "half(%s + 2.0 * float(%s));\nhalf2 middle = half2((%s.zw - %s.xy) - 2.0 * "
79 "float(threshold));\nif (translatedFragPos.x >= threshold && translatedFragPos.x < "
80 "middle.x + threshold) {\n translatedFragPos.x = threshold;\n} else if "
81 "(translatedFragPos.x >= middle.x + threshold) {\n translatedFragPos.x -= "
82 "float(middle.x) - 1.0;\n}\nif (translatedFragPos.y > threshold && "
83 "translatedFragPos.y < middle.y + threshold) {\n translatedFr",
84 args.fUniformHandler->getUniformCStr(fProxyRectVar),
85 args.fUniformHandler->getUniformCStr(fCornerRadiusVar),
86 args.fUniformHandler->getUniformCStr(fBlurRadiusVar),
87 args.fUniformHandler->getUniformCStr(fProxyRectVar),
88 args.fUniformHandler->getUniformCStr(fProxyRectVar));
89 fragBuilder->codeAppendf(
90 "agPos.y = threshold;\n} else if (translatedFragPos.y >= middle.y + threshold) {\n "
91 " translatedFragPos.y -= float(middle.y) - 1.0;\n}\nhalf2 proxyDims = "
92 "half2(half(2.0 * float(threshold) + 1.0));\nhalf2 texCoord = translatedFragPos / "
93 "proxyDims;\n%s = %s * texture(%s, float2(texCoord)).%s;\n",
94 args.fOutputColor, args.fInputColor,
95 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(),
96 fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str());
97 }
98
99 private:
onSetData(const GrGLSLProgramDataManager & pdman,const GrFragmentProcessor & _proc)100 void onSetData(const GrGLSLProgramDataManager& pdman,
101 const GrFragmentProcessor& _proc) override {
102 const GrRRectBlurEffect& _outer = _proc.cast<GrRRectBlurEffect>();
103 { pdman.set1f(fCornerRadiusVar, (_outer.cornerRadius())); }
104 auto sigma = _outer.sigma();
105 (void)sigma;
106 auto rect = _outer.rect();
107 (void)rect;
108 UniformHandle& cornerRadius = fCornerRadiusVar;
109 (void)cornerRadius;
110 GrSurfaceProxy& ninePatchSamplerProxy = *_outer.textureSampler(0).proxy();
111 GrTexture& ninePatchSampler = *ninePatchSamplerProxy.peekTexture();
112 (void)ninePatchSampler;
113 UniformHandle& proxyRect = fProxyRectVar;
114 (void)proxyRect;
115 UniformHandle& blurRadius = fBlurRadiusVar;
116 (void)blurRadius;
117
118 float blurRadiusValue = 3.f * SkScalarCeilToScalar(sigma - 1 / 6.0f);
119 pdman.set1f(blurRadius, blurRadiusValue);
120
121 SkRect outset = rect;
122 outset.outset(blurRadiusValue, blurRadiusValue);
123 pdman.set4f(proxyRect, outset.fLeft, outset.fTop, outset.fRight, outset.fBottom);
124 }
125 UniformHandle fProxyRectVar;
126 UniformHandle fBlurRadiusVar;
127 UniformHandle fCornerRadiusVar;
128 };
onCreateGLSLInstance() const129 GrGLSLFragmentProcessor* GrRRectBlurEffect::onCreateGLSLInstance() const {
130 return new GrGLSLRRectBlurEffect();
131 }
onGetGLSLProcessorKey(const GrShaderCaps & caps,GrProcessorKeyBuilder * b) const132 void GrRRectBlurEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
133 GrProcessorKeyBuilder* b) const {}
onIsEqual(const GrFragmentProcessor & other) const134 bool GrRRectBlurEffect::onIsEqual(const GrFragmentProcessor& other) const {
135 const GrRRectBlurEffect& that = other.cast<GrRRectBlurEffect>();
136 (void)that;
137 if (fSigma != that.fSigma) return false;
138 if (fRect != that.fRect) return false;
139 if (fCornerRadius != that.fCornerRadius) return false;
140 if (fNinePatchSampler != that.fNinePatchSampler) return false;
141 return true;
142 }
GrRRectBlurEffect(const GrRRectBlurEffect & src)143 GrRRectBlurEffect::GrRRectBlurEffect(const GrRRectBlurEffect& src)
144 : INHERITED(kGrRRectBlurEffect_ClassID, src.optimizationFlags())
145 , fSigma(src.fSigma)
146 , fRect(src.fRect)
147 , fCornerRadius(src.fCornerRadius)
148 , fNinePatchSampler(src.fNinePatchSampler) {
149 this->setTextureSamplerCnt(1);
150 }
clone() const151 std::unique_ptr<GrFragmentProcessor> GrRRectBlurEffect::clone() const {
152 return std::unique_ptr<GrFragmentProcessor>(new GrRRectBlurEffect(*this));
153 }
onTextureSampler(int index) const154 const GrFragmentProcessor::TextureSampler& GrRRectBlurEffect::onTextureSampler(int index) const {
155 return IthTextureSampler(index, fNinePatchSampler);
156 }
157 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRRectBlurEffect);
158 #if GR_TEST_UTILS
TestCreate(GrProcessorTestData * d)159 std::unique_ptr<GrFragmentProcessor> GrRRectBlurEffect::TestCreate(GrProcessorTestData* d) {
160 SkScalar w = d->fRandom->nextRangeScalar(100.f, 1000.f);
161 SkScalar h = d->fRandom->nextRangeScalar(100.f, 1000.f);
162 SkScalar r = d->fRandom->nextRangeF(1.f, 9.f);
163 SkScalar sigma = d->fRandom->nextRangeF(1.f, 10.f);
164 SkRRect rrect;
165 rrect.setRectXY(SkRect::MakeWH(w, h), r, r);
166 return GrRRectBlurEffect::Make(d->context(), sigma, sigma, rrect, rrect);
167 }
168 #endif
169