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| 1 /* | 1 /* |
| 2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "gl/builders/GrGLProgramBuilder.h" | 8 #include "gl/builders/GrGLProgramBuilder.h" |
| 9 #include "GrOvalEffect.h" | 9 #include "GrOvalEffect.h" |
| 10 | 10 |
| (...skipping 84 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 95 } while (kHairlineAA_GrProcessorEdgeType == et); | 95 } while (kHairlineAA_GrProcessorEdgeType == et); |
| 96 return CircleEffect::Create(et, center, radius); | 96 return CircleEffect::Create(et, center, radius); |
| 97 } | 97 } |
| 98 | 98 |
| 99 ////////////////////////////////////////////////////////////////////////////// | 99 ////////////////////////////////////////////////////////////////////////////// |
| 100 | 100 |
| 101 class GLCircleEffect : public GrGLFragmentProcessor { | 101 class GLCircleEffect : public GrGLFragmentProcessor { |
| 102 public: | 102 public: |
| 103 GLCircleEffect(const GrBackendProcessorFactory&, const GrProcessor&); | 103 GLCircleEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| 104 | 104 |
| 105 virtual void emitCode(GrGLProgramBuilder* builder, | 105 virtual void emitCode(GrGLFPBuilder* builder, |
| 106 const GrFragmentProcessor& fp, | 106 const GrFragmentProcessor& fp, |
| 107 const GrProcessorKey& key, | 107 const GrProcessorKey& key, |
| 108 const char* outputColor, | 108 const char* outputColor, |
| 109 const char* inputColor, | 109 const char* inputColor, |
| 110 const TransformedCoordsArray&, | 110 const TransformedCoordsArray&, |
| 111 const TextureSamplerArray&) SK_OVERRIDE; | 111 const TextureSamplerArray&) SK_OVERRIDE; |
| 112 | 112 |
| 113 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKe
yBuilder*); | 113 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKe
yBuilder*); |
| 114 | 114 |
| 115 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; | 115 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
| 116 | 116 |
| 117 private: | 117 private: |
| 118 GrGLProgramDataManager::UniformHandle fCircleUniform; | 118 GrGLProgramDataManager::UniformHandle fCircleUniform; |
| 119 SkPoint fPrevCenter; | 119 SkPoint fPrevCenter; |
| 120 SkScalar fPrevRadius; | 120 SkScalar fPrevRadius; |
| 121 | 121 |
| 122 typedef GrGLFragmentProcessor INHERITED; | 122 typedef GrGLFragmentProcessor INHERITED; |
| 123 }; | 123 }; |
| 124 | 124 |
| 125 GLCircleEffect::GLCircleEffect(const GrBackendProcessorFactory& factory, | 125 GLCircleEffect::GLCircleEffect(const GrBackendProcessorFactory& factory, |
| 126 const GrProcessor&) | 126 const GrProcessor&) |
| 127 : INHERITED (factory) { | 127 : INHERITED (factory) { |
| 128 fPrevRadius = -1.f; | 128 fPrevRadius = -1.f; |
| 129 } | 129 } |
| 130 | 130 |
| 131 void GLCircleEffect::emitCode(GrGLProgramBuilder* builder, | 131 void GLCircleEffect::emitCode(GrGLFPBuilder* builder, |
| 132 const GrFragmentProcessor& fp, | 132 const GrFragmentProcessor& fp, |
| 133 const GrProcessorKey& key, | 133 const GrProcessorKey& key, |
| 134 const char* outputColor, | 134 const char* outputColor, |
| 135 const char* inputColor, | 135 const char* inputColor, |
| 136 const TransformedCoordsArray&, | 136 const TransformedCoordsArray&, |
| 137 const TextureSamplerArray& samplers) { | 137 const TextureSamplerArray& samplers) { |
| 138 const CircleEffect& ce = fp.cast<CircleEffect>(); | 138 const CircleEffect& ce = fp.cast<CircleEffect>(); |
| 139 const char *circleName; | 139 const char *circleName; |
| 140 // The circle uniform is (center.x, center.y, radius + 0.5) for regular fill
s and | 140 // The circle uniform is (center.x, center.y, radius + 0.5) for regular fill
s and |
| 141 // (... ,radius - 0.5) for inverse fills. | 141 // (... ,radius - 0.5) for inverse fills. |
| 142 fCircleUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibilit
y, | 142 fCircleUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibilit
y, |
| 143 kVec3f_GrSLType, | 143 kVec3f_GrSLType, |
| 144 "circle", | 144 "circle", |
| 145 &circleName); | 145 &circleName); |
| 146 | 146 |
| 147 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); | 147 GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 148 const char* fragmentPos = fsBuilder->fragmentPosition(); | 148 const char* fragmentPos = fsBuilder->fragmentPosition(); |
| 149 | 149 |
| 150 SkASSERT(kHairlineAA_GrProcessorEdgeType != ce.getEdgeType()); | 150 SkASSERT(kHairlineAA_GrProcessorEdgeType != ce.getEdgeType()); |
| 151 if (GrProcessorEdgeTypeIsInverseFill(ce.getEdgeType())) { | 151 if (GrProcessorEdgeTypeIsInverseFill(ce.getEdgeType())) { |
| 152 fsBuilder->codeAppendf("\t\tfloat d = length(%s.xy - %s.xy) - %s.z;\n", | 152 fsBuilder->codeAppendf("\t\tfloat d = length(%s.xy - %s.xy) - %s.z;\n", |
| 153 circleName, fragmentPos, circleName); | 153 circleName, fragmentPos, circleName); |
| 154 } else { | 154 } else { |
| 155 fsBuilder->codeAppendf("\t\tfloat d = %s.z - length(%s.xy - %s.xy);\n", | 155 fsBuilder->codeAppendf("\t\tfloat d = %s.z - length(%s.xy - %s.xy);\n", |
| 156 circleName, fragmentPos, circleName); | 156 circleName, fragmentPos, circleName); |
| 157 } | 157 } |
| (...skipping 113 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 271 } while (kHairlineAA_GrProcessorEdgeType == et); | 271 } while (kHairlineAA_GrProcessorEdgeType == et); |
| 272 return EllipseEffect::Create(et, center, rx, ry); | 272 return EllipseEffect::Create(et, center, rx, ry); |
| 273 } | 273 } |
| 274 | 274 |
| 275 ////////////////////////////////////////////////////////////////////////////// | 275 ////////////////////////////////////////////////////////////////////////////// |
| 276 | 276 |
| 277 class GLEllipseEffect : public GrGLFragmentProcessor { | 277 class GLEllipseEffect : public GrGLFragmentProcessor { |
| 278 public: | 278 public: |
| 279 GLEllipseEffect(const GrBackendProcessorFactory&, const GrProcessor&); | 279 GLEllipseEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| 280 | 280 |
| 281 virtual void emitCode(GrGLProgramBuilder* builder, | 281 virtual void emitCode(GrGLFPBuilder* builder, |
| 282 const GrFragmentProcessor& fp, | 282 const GrFragmentProcessor& fp, |
| 283 const GrProcessorKey& key, | 283 const GrProcessorKey& key, |
| 284 const char* outputColor, | 284 const char* outputColor, |
| 285 const char* inputColor, | 285 const char* inputColor, |
| 286 const TransformedCoordsArray&, | 286 const TransformedCoordsArray&, |
| 287 const TextureSamplerArray&) SK_OVERRIDE; | 287 const TextureSamplerArray&) SK_OVERRIDE; |
| 288 | 288 |
| 289 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKe
yBuilder*); | 289 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKe
yBuilder*); |
| 290 | 290 |
| 291 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; | 291 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
| 292 | 292 |
| 293 private: | 293 private: |
| 294 GrGLProgramDataManager::UniformHandle fEllipseUniform; | 294 GrGLProgramDataManager::UniformHandle fEllipseUniform; |
| 295 SkPoint fPrevCenter; | 295 SkPoint fPrevCenter; |
| 296 SkVector fPrevRadii; | 296 SkVector fPrevRadii; |
| 297 | 297 |
| 298 typedef GrGLFragmentProcessor INHERITED; | 298 typedef GrGLFragmentProcessor INHERITED; |
| 299 }; | 299 }; |
| 300 | 300 |
| 301 GLEllipseEffect::GLEllipseEffect(const GrBackendProcessorFactory& factory, | 301 GLEllipseEffect::GLEllipseEffect(const GrBackendProcessorFactory& factory, |
| 302 const GrProcessor& effect) | 302 const GrProcessor& effect) |
| 303 : INHERITED (factory) { | 303 : INHERITED (factory) { |
| 304 fPrevRadii.fX = -1.f; | 304 fPrevRadii.fX = -1.f; |
| 305 } | 305 } |
| 306 | 306 |
| 307 void GLEllipseEffect::emitCode(GrGLProgramBuilder* builder, | 307 void GLEllipseEffect::emitCode(GrGLFPBuilder* builder, |
| 308 const GrFragmentProcessor& fp, | 308 const GrFragmentProcessor& fp, |
| 309 const GrProcessorKey& key, | 309 const GrProcessorKey& key, |
| 310 const char* outputColor, | 310 const char* outputColor, |
| 311 const char* inputColor, | 311 const char* inputColor, |
| 312 const TransformedCoordsArray&, | 312 const TransformedCoordsArray&, |
| 313 const TextureSamplerArray& samplers) { | 313 const TextureSamplerArray& samplers) { |
| 314 const EllipseEffect& ee = fp.cast<EllipseEffect>(); | 314 const EllipseEffect& ee = fp.cast<EllipseEffect>(); |
| 315 const char *ellipseName; | 315 const char *ellipseName; |
| 316 // The ellipse uniform is (center.x, center.y, 1 / rx^2, 1 / ry^2) | 316 // The ellipse uniform is (center.x, center.y, 1 / rx^2, 1 / ry^2) |
| 317 fEllipseUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibili
ty, | 317 fEllipseUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibili
ty, |
| 318 kVec4f_GrSLType, | 318 kVec4f_GrSLType, |
| 319 "ellipse", | 319 "ellipse", |
| 320 &ellipseName); | 320 &ellipseName); |
| 321 | 321 |
| 322 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); | 322 GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 323 const char* fragmentPos = fsBuilder->fragmentPosition(); | 323 const char* fragmentPos = fsBuilder->fragmentPosition(); |
| 324 | 324 |
| 325 // d is the offset to the ellipse center | 325 // d is the offset to the ellipse center |
| 326 fsBuilder->codeAppendf("\t\tvec2 d = %s.xy - %s.xy;\n", fragmentPos, ellipse
Name); | 326 fsBuilder->codeAppendf("\t\tvec2 d = %s.xy - %s.xy;\n", fragmentPos, ellipse
Name); |
| 327 fsBuilder->codeAppendf("\t\tvec2 Z = d * %s.zw;\n", ellipseName); | 327 fsBuilder->codeAppendf("\t\tvec2 Z = d * %s.zw;\n", ellipseName); |
| 328 // implicit is the evaluation of (x/rx)^2 + (y/ry)^2 - 1. | 328 // implicit is the evaluation of (x/rx)^2 + (y/ry)^2 - 1. |
| 329 fsBuilder->codeAppend("\t\tfloat implicit = dot(Z, d) - 1.0;\n"); | 329 fsBuilder->codeAppend("\t\tfloat implicit = dot(Z, d) - 1.0;\n"); |
| 330 // grad_dot is the squared length of the gradient of the implicit. | 330 // grad_dot is the squared length of the gradient of the implicit. |
| 331 fsBuilder->codeAppendf("\t\tfloat grad_dot = 4.0 * dot(Z, Z);\n"); | 331 fsBuilder->codeAppendf("\t\tfloat grad_dot = 4.0 * dot(Z, Z);\n"); |
| 332 // avoid calling inversesqrt on zero. | 332 // avoid calling inversesqrt on zero. |
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| 383 w /= 2; | 383 w /= 2; |
| 384 return CircleEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval
.fTop + w), w); | 384 return CircleEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval
.fTop + w), w); |
| 385 } else { | 385 } else { |
| 386 w /= 2; | 386 w /= 2; |
| 387 h /= 2; | 387 h /= 2; |
| 388 return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, ova
l.fTop + h), w, h); | 388 return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, ova
l.fTop + h), w, h); |
| 389 } | 389 } |
| 390 | 390 |
| 391 return NULL; | 391 return NULL; |
| 392 } | 392 } |
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