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 GrMagnifierEffect.fp; do not modify. 10 **************************************************************************************************/ 11 #include "GrMagnifierEffect.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 GrGLSLMagnifierEffect : public GrGLSLFragmentProcessor { 20 public: 21 GrGLSLMagnifierEffect() {} 22 void emitCode(EmitArgs& args) override { 23 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; 24 const GrMagnifierEffect& _outer = args.fFp.cast<GrMagnifierEffect>(); 25 (void)_outer; 26 auto bounds = _outer.bounds(); 27 (void)bounds; 28 auto srcRect = _outer.srcRect(); 29 (void)srcRect; 30 auto xInvZoom = _outer.xInvZoom(); 31 (void)xInvZoom; 32 auto yInvZoom = _outer.yInvZoom(); 33 (void)yInvZoom; 34 auto xInvInset = _outer.xInvInset(); 35 (void)xInvInset; 36 auto yInvInset = _outer.yInvInset(); 37 (void)yInvInset; 38 fBoundsUniformVar = args.fUniformHandler->addUniform( 39 kFragment_GrShaderFlag, kFloat4_GrSLType, kDefault_GrSLPrecision, "boundsUniform"); 40 fXInvZoomVar = args.fUniformHandler->addUniform( 41 kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "xInvZoom"); 42 fYInvZoomVar = args.fUniformHandler->addUniform( 43 kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "yInvZoom"); 44 fXInvInsetVar = args.fUniformHandler->addUniform( 45 kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "xInvInset"); 46 fYInvInsetVar = args.fUniformHandler->addUniform( 47 kFragment_GrShaderFlag, kFloat_GrSLType, kDefault_GrSLPrecision, "yInvInset"); 48 fOffsetVar = args.fUniformHandler->addUniform( 49 kFragment_GrShaderFlag, kHalf2_GrSLType, kDefault_GrSLPrecision, "offset"); 50 SkString sk_TransformedCoords2D_0 = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]); 51 fragBuilder->codeAppendf( 52 "float2 coord = %s;\nfloat2 zoom_coord = float2(%s + half2(coord * " 53 "float2(half2(half(%s), half(%s)))));\nfloat2 delta = (coord - %s.xy) * " 54 "%s.zw;\ndelta = min(delta, float2(half2(1.0, 1.0) - half2(delta)));\ndelta *= " 55 "float2(half2(half(%s), half(%s)));\nhalf weight = 0.0;\nif (delta.x < 2.0 && " 56 "delta.y < 2.0) {\n delta = float2(half2(2.0, 2.0) - half2(delta));\n half " 57 "dist = half(length(delta));\n dist = half(max(2.0 - float(dist), 0.0));\n " 58 "weight = half(min(float(dist * dist), 1.0));\n} else {\n ", 59 sk_TransformedCoords2D_0.c_str(), 60 args.fUniformHandler->getUniformCStr(fOffsetVar), 61 args.fUniformHandler->getUniformCStr(fXInvZoomVar), 62 args.fUniformHandler->getUniformCStr(fYInvZoomVar), 63 args.fUniformHandler->getUniformCStr(fBoundsUniformVar), 64 args.fUniformHandler->getUniformCStr(fBoundsUniformVar), 65 args.fUniformHandler->getUniformCStr(fXInvInsetVar), 66 args.fUniformHandler->getUniformCStr(fYInvInsetVar)); 67 fragBuilder->codeAppendf( 68 "float2 delta_squared = delta * delta;\n weight = half(min(min(delta_squared.x, " 69 "delta_squared.y), 1.0));\n}\n%s = texture(%s, mix(coord, zoom_coord, " 70 "float(weight))).%s;\n", 71 args.fOutputColor, 72 fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(), 73 fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str()); 74 } 75 76 private: 77 void onSetData(const GrGLSLProgramDataManager& pdman, 78 const GrFragmentProcessor& _proc) override { 79 const GrMagnifierEffect& _outer = _proc.cast<GrMagnifierEffect>(); 80 { 81 pdman.set1f(fXInvZoomVar, _outer.xInvZoom()); 82 pdman.set1f(fYInvZoomVar, _outer.yInvZoom()); 83 pdman.set1f(fXInvInsetVar, _outer.xInvInset()); 84 pdman.set1f(fYInvInsetVar, _outer.yInvInset()); 85 } 86 GrSurfaceProxy& srcProxy = *_outer.textureSampler(0).proxy(); 87 GrTexture& src = *srcProxy.priv().peekTexture(); 88 (void)src; 89 auto bounds = _outer.bounds(); 90 (void)bounds; 91 UniformHandle& boundsUniform = fBoundsUniformVar; 92 (void)boundsUniform; 93 auto srcRect = _outer.srcRect(); 94 (void)srcRect; 95 UniformHandle& xInvZoom = fXInvZoomVar; 96 (void)xInvZoom; 97 UniformHandle& yInvZoom = fYInvZoomVar; 98 (void)yInvZoom; 99 UniformHandle& xInvInset = fXInvInsetVar; 100 (void)xInvInset; 101 UniformHandle& yInvInset = fYInvInsetVar; 102 (void)yInvInset; 103 UniformHandle& offset = fOffsetVar; 104 (void)offset; 105 106 SkScalar invW = 1.0f / src.width(); 107 SkScalar invH = 1.0f / src.height(); 108 109 { 110 SkScalar y = srcRect.y() * invH; 111 if (srcProxy.origin() != kTopLeft_GrSurfaceOrigin) { 112 y = 1.0f - (srcRect.height() / bounds.height()) - y; 113 } 114 115 pdman.set2f(offset, srcRect.x() * invW, y); 116 } 117 118 { 119 SkScalar y = bounds.y() * invH; 120 if (srcProxy.origin() != kTopLeft_GrSurfaceOrigin) { 121 y = 1.0f - bounds.height() * invH; 122 } 123 124 pdman.set4f(boundsUniform, 125 bounds.x() * invW, 126 y, 127 SkIntToScalar(src.width()) / bounds.width(), 128 SkIntToScalar(src.height()) / bounds.height()); 129 } 130 } 131 UniformHandle fBoundsUniformVar; 132 UniformHandle fOffsetVar; 133 UniformHandle fXInvZoomVar; 134 UniformHandle fYInvZoomVar; 135 UniformHandle fXInvInsetVar; 136 UniformHandle fYInvInsetVar; 137 }; 138 GrGLSLFragmentProcessor* GrMagnifierEffect::onCreateGLSLInstance() const { 139 return new GrGLSLMagnifierEffect(); 140 } 141 void GrMagnifierEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, 142 GrProcessorKeyBuilder* b) const {} 143 bool GrMagnifierEffect::onIsEqual(const GrFragmentProcessor& other) const { 144 const GrMagnifierEffect& that = other.cast<GrMagnifierEffect>(); 145 (void)that; 146 if (fSrc != that.fSrc) return false; 147 if (fBounds != that.fBounds) return false; 148 if (fSrcRect != that.fSrcRect) return false; 149 if (fXInvZoom != that.fXInvZoom) return false; 150 if (fYInvZoom != that.fYInvZoom) return false; 151 if (fXInvInset != that.fXInvInset) return false; 152 if (fYInvInset != that.fYInvInset) return false; 153 return true; 154 } 155 GrMagnifierEffect::GrMagnifierEffect(const GrMagnifierEffect& src) 156 : INHERITED(kGrMagnifierEffect_ClassID, src.optimizationFlags()) 157 , fSrc(src.fSrc) 158 , fBounds(src.fBounds) 159 , fSrcRect(src.fSrcRect) 160 , fXInvZoom(src.fXInvZoom) 161 , fYInvZoom(src.fYInvZoom) 162 , fXInvInset(src.fXInvInset) 163 , fYInvInset(src.fYInvInset) 164 , fSrcCoordTransform(src.fSrcCoordTransform) { 165 this->addTextureSampler(&fSrc); 166 this->addCoordTransform(&fSrcCoordTransform); 167 } 168 std::unique_ptr<GrFragmentProcessor> GrMagnifierEffect::clone() const { 169 return std::unique_ptr<GrFragmentProcessor>(new GrMagnifierEffect(*this)); 170 } 171 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMagnifierEffect); 172 #if GR_TEST_UTILS 173 std::unique_ptr<GrFragmentProcessor> GrMagnifierEffect::TestCreate(GrProcessorTestData* d) { 174 sk_sp<GrTextureProxy> proxy = d->textureProxy(0); 175 const int kMaxWidth = 200; 176 const int kMaxHeight = 200; 177 const SkScalar kMaxInset = 20.0f; 178 uint32_t width = d->fRandom->nextULessThan(kMaxWidth); 179 uint32_t height = d->fRandom->nextULessThan(kMaxHeight); 180 SkScalar inset = d->fRandom->nextRangeScalar(1.0f, kMaxInset); 181 182 SkIRect bounds = SkIRect::MakeWH(SkIntToScalar(kMaxWidth), SkIntToScalar(kMaxHeight)); 183 SkRect srcRect = SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)); 184 185 auto effect = GrMagnifierEffect::Make(std::move(proxy), 186 bounds, 187 srcRect, 188 srcRect.width() / bounds.width(), 189 srcRect.height() / bounds.height(), 190 bounds.width() / inset, 191 bounds.height() / inset); 192 SkASSERT(effect); 193 return effect; 194 } 195 #endif 196 #endif 197
