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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 "GrOvalEffect.h" | 8 #include "GrOvalEffect.h" |
9 | 9 |
10 #include "GrFragmentProcessor.h" | 10 #include "GrFragmentProcessor.h" |
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86 do { | 86 do { |
87 et = (GrPrimitiveEdgeType)d->fRandom->nextULessThan(kGrProcessorEdgeType
Cnt); | 87 et = (GrPrimitiveEdgeType)d->fRandom->nextULessThan(kGrProcessorEdgeType
Cnt); |
88 } while (kHairlineAA_GrProcessorEdgeType == et); | 88 } while (kHairlineAA_GrProcessorEdgeType == et); |
89 return CircleEffect::Create(et, center, radius); | 89 return CircleEffect::Create(et, center, radius); |
90 } | 90 } |
91 | 91 |
92 ////////////////////////////////////////////////////////////////////////////// | 92 ////////////////////////////////////////////////////////////////////////////// |
93 | 93 |
94 class GLCircleEffect : public GrGLSLFragmentProcessor { | 94 class GLCircleEffect : public GrGLSLFragmentProcessor { |
95 public: | 95 public: |
96 GLCircleEffect(const GrProcessor&); | 96 GLCircleEffect() : fPrevRadius(-1.0f) { } |
97 | 97 |
98 virtual void emitCode(EmitArgs&) override; | 98 virtual void emitCode(EmitArgs&) override; |
99 | 99 |
100 static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessor
KeyBuilder*); | 100 static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessor
KeyBuilder*); |
101 | 101 |
102 protected: | 102 protected: |
103 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; | 103 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; |
104 | 104 |
105 private: | 105 private: |
106 GrGLSLProgramDataManager::UniformHandle fCircleUniform; | 106 GrGLSLProgramDataManager::UniformHandle fCircleUniform; |
107 SkPoint fPrevCenter; | 107 SkPoint fPrevCenter; |
108 SkScalar fPrevRadius; | 108 SkScalar fPrevRadius; |
109 | 109 |
110 typedef GrGLSLFragmentProcessor INHERITED; | 110 typedef GrGLSLFragmentProcessor INHERITED; |
111 }; | 111 }; |
112 | 112 |
113 GLCircleEffect::GLCircleEffect(const GrProcessor&) { | |
114 fPrevRadius = -1.f; | |
115 } | |
116 | |
117 void GLCircleEffect::emitCode(EmitArgs& args) { | 113 void GLCircleEffect::emitCode(EmitArgs& args) { |
118 const CircleEffect& ce = args.fFp.cast<CircleEffect>(); | 114 const CircleEffect& ce = args.fFp.cast<CircleEffect>(); |
119 const char *circleName; | 115 const char *circleName; |
120 // The circle uniform is (center.x, center.y, radius + 0.5, 1 / (radius + 0.
5)) for regular | 116 // The circle uniform is (center.x, center.y, radius + 0.5, 1 / (radius + 0.
5)) for regular |
121 // fills and (..., radius - 0.5, 1 / (radius - 0.5)) for inverse fills. | 117 // fills and (..., radius - 0.5, 1 / (radius - 0.5)) for inverse fills. |
122 fCircleUniform = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFra
gment_Visibility, | 118 fCircleUniform = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFra
gment_Visibility, |
123 kVec4f_GrSLType, kDefault_
GrSLPrecision, | 119 kVec4f_GrSLType, kDefault_
GrSLPrecision, |
124 "circle", | 120 "circle", |
125 &circleName); | 121 &circleName); |
126 | 122 |
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173 } | 169 } |
174 | 170 |
175 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | 171 ////////////////////////////////////////////////////////////////////////////////
/////////////////// |
176 | 172 |
177 void CircleEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, | 173 void CircleEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
178 GrProcessorKeyBuilder* b) const { | 174 GrProcessorKeyBuilder* b) const { |
179 GLCircleEffect::GenKey(*this, caps, b); | 175 GLCircleEffect::GenKey(*this, caps, b); |
180 } | 176 } |
181 | 177 |
182 GrGLSLFragmentProcessor* CircleEffect::onCreateGLSLInstance() const { | 178 GrGLSLFragmentProcessor* CircleEffect::onCreateGLSLInstance() const { |
183 return new GLCircleEffect(*this); | 179 return new GLCircleEffect; |
184 } | 180 } |
185 | 181 |
186 ////////////////////////////////////////////////////////////////////////////// | 182 ////////////////////////////////////////////////////////////////////////////// |
187 | 183 |
188 class EllipseEffect : public GrFragmentProcessor { | 184 class EllipseEffect : public GrFragmentProcessor { |
189 public: | 185 public: |
190 static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkPoint& cente
r, SkScalar rx, | 186 static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkPoint& cente
r, SkScalar rx, |
191 SkScalar ry); | 187 SkScalar ry); |
192 | 188 |
193 virtual ~EllipseEffect() {}; | 189 virtual ~EllipseEffect() {}; |
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258 do { | 254 do { |
259 et = (GrPrimitiveEdgeType)d->fRandom->nextULessThan(kGrProcessorEdgeType
Cnt); | 255 et = (GrPrimitiveEdgeType)d->fRandom->nextULessThan(kGrProcessorEdgeType
Cnt); |
260 } while (kHairlineAA_GrProcessorEdgeType == et); | 256 } while (kHairlineAA_GrProcessorEdgeType == et); |
261 return EllipseEffect::Create(et, center, rx, ry); | 257 return EllipseEffect::Create(et, center, rx, ry); |
262 } | 258 } |
263 | 259 |
264 ////////////////////////////////////////////////////////////////////////////// | 260 ////////////////////////////////////////////////////////////////////////////// |
265 | 261 |
266 class GLEllipseEffect : public GrGLSLFragmentProcessor { | 262 class GLEllipseEffect : public GrGLSLFragmentProcessor { |
267 public: | 263 public: |
268 GLEllipseEffect(const GrProcessor&); | 264 GLEllipseEffect() { |
| 265 fPrevRadii.fX = -1.0f; |
| 266 } |
269 | 267 |
270 virtual void emitCode(EmitArgs&) override; | 268 void emitCode(EmitArgs&) override; |
271 | 269 |
272 static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessor
KeyBuilder*); | 270 static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessor
KeyBuilder*); |
273 | 271 |
274 protected: | 272 protected: |
275 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; | 273 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; |
276 | 274 |
277 private: | 275 private: |
278 GrGLSLProgramDataManager::UniformHandle fEllipseUniform; | 276 GrGLSLProgramDataManager::UniformHandle fEllipseUniform; |
279 GrGLSLProgramDataManager::UniformHandle fScaleUniform; | 277 GrGLSLProgramDataManager::UniformHandle fScaleUniform; |
280 SkPoint fPrevCenter; | 278 SkPoint fPrevCenter; |
281 SkVector fPrevRadii; | 279 SkVector fPrevRadii; |
282 | 280 |
283 typedef GrGLSLFragmentProcessor INHERITED; | 281 typedef GrGLSLFragmentProcessor INHERITED; |
284 }; | 282 }; |
285 | 283 |
286 GLEllipseEffect::GLEllipseEffect(const GrProcessor& effect) { | |
287 fPrevRadii.fX = -1.f; | |
288 } | |
289 | |
290 void GLEllipseEffect::emitCode(EmitArgs& args) { | 284 void GLEllipseEffect::emitCode(EmitArgs& args) { |
291 const EllipseEffect& ee = args.fFp.cast<EllipseEffect>(); | 285 const EllipseEffect& ee = args.fFp.cast<EllipseEffect>(); |
292 const char *ellipseName; | 286 const char *ellipseName; |
293 // The ellipse uniform is (center.x, center.y, 1 / rx^2, 1 / ry^2) | 287 // The ellipse uniform is (center.x, center.y, 1 / rx^2, 1 / ry^2) |
294 // The last two terms can underflow on mediump, so we use highp. | 288 // The last two terms can underflow on mediump, so we use highp. |
295 fEllipseUniform = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFr
agment_Visibility, | 289 fEllipseUniform = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFr
agment_Visibility, |
296 kVec4f_GrSLType, kHigh_Gr
SLPrecision, | 290 kVec4f_GrSLType, kHigh_Gr
SLPrecision, |
297 "ellipse", | 291 "ellipse", |
298 &ellipseName); | 292 &ellipseName); |
299 // If we're on a device with a "real" mediump then we'll do the distance com
putation in a space | 293 // If we're on a device with a "real" mediump then we'll do the distance com
putation in a space |
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385 } | 379 } |
386 | 380 |
387 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | 381 ////////////////////////////////////////////////////////////////////////////////
/////////////////// |
388 | 382 |
389 void EllipseEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, | 383 void EllipseEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
390 GrProcessorKeyBuilder* b) const { | 384 GrProcessorKeyBuilder* b) const { |
391 GLEllipseEffect::GenKey(*this, caps, b); | 385 GLEllipseEffect::GenKey(*this, caps, b); |
392 } | 386 } |
393 | 387 |
394 GrGLSLFragmentProcessor* EllipseEffect::onCreateGLSLInstance() const { | 388 GrGLSLFragmentProcessor* EllipseEffect::onCreateGLSLInstance() const { |
395 return new GLEllipseEffect(*this); | 389 return new GLEllipseEffect; |
396 } | 390 } |
397 | 391 |
398 ////////////////////////////////////////////////////////////////////////////// | 392 ////////////////////////////////////////////////////////////////////////////// |
399 | 393 |
400 GrFragmentProcessor* GrOvalEffect::Create(GrPrimitiveEdgeType edgeType, const Sk
Rect& oval) { | 394 GrFragmentProcessor* GrOvalEffect::Create(GrPrimitiveEdgeType edgeType, const Sk
Rect& oval) { |
401 if (kHairlineAA_GrProcessorEdgeType == edgeType) { | 395 if (kHairlineAA_GrProcessorEdgeType == edgeType) { |
402 return nullptr; | 396 return nullptr; |
403 } | 397 } |
404 SkScalar w = oval.width(); | 398 SkScalar w = oval.width(); |
405 SkScalar h = oval.height(); | 399 SkScalar h = oval.height(); |
406 if (SkScalarNearlyEqual(w, h)) { | 400 if (SkScalarNearlyEqual(w, h)) { |
407 w /= 2; | 401 w /= 2; |
408 return CircleEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval
.fTop + w), w); | 402 return CircleEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval
.fTop + w), w); |
409 } else { | 403 } else { |
410 w /= 2; | 404 w /= 2; |
411 h /= 2; | 405 h /= 2; |
412 return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, ova
l.fTop + h), w, h); | 406 return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, ova
l.fTop + h), w, h); |
413 } | 407 } |
414 | 408 |
415 return nullptr; | 409 return nullptr; |
416 } | 410 } |
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