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1 /* | 1 /* |
2 * Copyright 2012 The Android Open Source Project | 2 * Copyright 2012 The Android Open Source Project |
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 "SkMorphologyImageFilter.h" | 8 #include "SkMorphologyImageFilter.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
11 #include "SkFlattenableBuffers.h" | 11 #include "SkFlattenableBuffers.h" |
12 #include "SkRect.h" | 12 #include "SkRect.h" |
13 #if SK_SUPPORT_GPU | 13 #if SK_SUPPORT_GPU |
14 #include "GrContext.h" | 14 #include "GrContext.h" |
15 #include "GrTexture.h" | 15 #include "GrTexture.h" |
16 #include "GrTBackendEffectFactory.h" | 16 #include "GrTBackendEffectFactory.h" |
17 #include "gl/GrGLEffect.h" | 17 #include "gl/GrGLEffect.h" |
18 #include "gl/GrGLEffectMatrix.h" | |
19 #include "effects/Gr1DKernelEffect.h" | 18 #include "effects/Gr1DKernelEffect.h" |
20 #include "SkImageFilterUtils.h" | 19 #include "SkImageFilterUtils.h" |
21 #endif | 20 #endif |
22 | 21 |
23 SkMorphologyImageFilter::SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer
) | 22 SkMorphologyImageFilter::SkMorphologyImageFilter(SkFlattenableReadBuffer& buffer
) |
24 : INHERITED(buffer) { | 23 : INHERITED(buffer) { |
25 fRadius.fWidth = buffer.readInt(); | 24 fRadius.fWidth = buffer.readInt(); |
26 fRadius.fHeight = buffer.readInt(); | 25 fRadius.fHeight = buffer.readInt(); |
27 } | 26 } |
28 | 27 |
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307 | 306 |
308 class GrGLMorphologyEffect : public GrGLEffect { | 307 class GrGLMorphologyEffect : public GrGLEffect { |
309 public: | 308 public: |
310 GrGLMorphologyEffect (const GrBackendEffectFactory&, const GrDrawEffect&); | 309 GrGLMorphologyEffect (const GrBackendEffectFactory&, const GrDrawEffect&); |
311 | 310 |
312 virtual void emitCode(GrGLShaderBuilder*, | 311 virtual void emitCode(GrGLShaderBuilder*, |
313 const GrDrawEffect&, | 312 const GrDrawEffect&, |
314 EffectKey, | 313 EffectKey, |
315 const char* outputColor, | 314 const char* outputColor, |
316 const char* inputColor, | 315 const char* inputColor, |
| 316 const TransformedCoordsArray&, |
317 const TextureSamplerArray&) SK_OVERRIDE; | 317 const TextureSamplerArray&) SK_OVERRIDE; |
318 | 318 |
319 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); | 319 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); |
320 | 320 |
321 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE; | 321 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE; |
322 | 322 |
323 private: | 323 private: |
324 int width() const { return GrMorphologyEffect::WidthFromRadius(fRadius); } | 324 int width() const { return GrMorphologyEffect::WidthFromRadius(fRadius); } |
325 | 325 |
326 int fRadius; | 326 int fRadius; |
327 GrMorphologyEffect::MorphologyType fType; | 327 GrMorphologyEffect::MorphologyType fType; |
328 GrGLUniformManager::UniformHandle fImageIncrementUni; | 328 GrGLUniformManager::UniformHandle fImageIncrementUni; |
329 GrGLEffectMatrix fEffectMatrix; | |
330 | 329 |
331 typedef GrGLEffect INHERITED; | 330 typedef GrGLEffect INHERITED; |
332 }; | 331 }; |
333 | 332 |
334 GrGLMorphologyEffect::GrGLMorphologyEffect(const GrBackendEffectFactory& factory
, | 333 GrGLMorphologyEffect::GrGLMorphologyEffect(const GrBackendEffectFactory& factory
, |
335 const GrDrawEffect& drawEffect) | 334 const GrDrawEffect& drawEffect) |
336 : INHERITED(factory) | 335 : INHERITED(factory) { |
337 , fEffectMatrix(drawEffect.castEffect<GrMorphologyEffect>().coordsType()) { | |
338 const GrMorphologyEffect& m = drawEffect.castEffect<GrMorphologyEffect>(); | 336 const GrMorphologyEffect& m = drawEffect.castEffect<GrMorphologyEffect>(); |
339 fRadius = m.radius(); | 337 fRadius = m.radius(); |
340 fType = m.type(); | 338 fType = m.type(); |
341 } | 339 } |
342 | 340 |
343 void GrGLMorphologyEffect::emitCode(GrGLShaderBuilder* builder, | 341 void GrGLMorphologyEffect::emitCode(GrGLShaderBuilder* builder, |
344 const GrDrawEffect&, | 342 const GrDrawEffect&, |
345 EffectKey key, | 343 EffectKey key, |
346 const char* outputColor, | 344 const char* outputColor, |
347 const char* inputColor, | 345 const char* inputColor, |
| 346 const TransformedCoordsArray& coords, |
348 const TextureSamplerArray& samplers) { | 347 const TextureSamplerArray& samplers) { |
349 SkString coords; | 348 SkString coords2D = builder->ensureFSCoords2D(coords, 0); |
350 fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &coords); | |
351 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibi
lity, | 349 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibi
lity, |
352 kVec2f_GrSLType, "ImageIncrement"); | 350 kVec2f_GrSLType, "ImageIncrement"); |
353 | 351 |
354 const char* func; | 352 const char* func; |
355 switch (fType) { | 353 switch (fType) { |
356 case GrMorphologyEffect::kErode_MorphologyType: | 354 case GrMorphologyEffect::kErode_MorphologyType: |
357 builder->fsCodeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", outputColor); | 355 builder->fsCodeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", outputColor); |
358 func = "min"; | 356 func = "min"; |
359 break; | 357 break; |
360 case GrMorphologyEffect::kDilate_MorphologyType: | 358 case GrMorphologyEffect::kDilate_MorphologyType: |
361 builder->fsCodeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", outputColor); | 359 builder->fsCodeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", outputColor); |
362 func = "max"; | 360 func = "max"; |
363 break; | 361 break; |
364 default: | 362 default: |
365 GrCrash("Unexpected type"); | 363 GrCrash("Unexpected type"); |
366 func = ""; // suppress warning | 364 func = ""; // suppress warning |
367 break; | 365 break; |
368 } | 366 } |
369 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); | 367 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
370 | 368 |
371 builder->fsCodeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords.c_str(),
fRadius, imgInc); | 369 builder->fsCodeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_str(
), fRadius, imgInc); |
372 builder->fsCodeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", this->width()
); | 370 builder->fsCodeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", this->width()
); |
373 builder->fsCodeAppendf("\t\t\t%s = %s(%s, ", outputColor, func, outputColor)
; | 371 builder->fsCodeAppendf("\t\t\t%s = %s(%s, ", outputColor, func, outputColor)
; |
374 builder->fsAppendTextureLookup(samplers[0], "coord"); | 372 builder->fsAppendTextureLookup(samplers[0], "coord"); |
375 builder->fsCodeAppend(");\n"); | 373 builder->fsCodeAppend(");\n"); |
376 builder->fsCodeAppendf("\t\t\tcoord += %s;\n", imgInc); | 374 builder->fsCodeAppendf("\t\t\tcoord += %s;\n", imgInc); |
377 builder->fsCodeAppend("\t\t}\n"); | 375 builder->fsCodeAppend("\t\t}\n"); |
378 SkString modulate; | 376 SkString modulate; |
379 GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); | 377 GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); |
380 builder->fsCodeAppend(modulate.c_str()); | 378 builder->fsCodeAppend(modulate.c_str()); |
381 } | 379 } |
382 | 380 |
383 GrGLEffect::EffectKey GrGLMorphologyEffect::GenKey(const GrDrawEffect& drawEffec
t, | 381 GrGLEffect::EffectKey GrGLMorphologyEffect::GenKey(const GrDrawEffect& drawEffec
t, |
384 const GrGLCaps&) { | 382 const GrGLCaps&) { |
385 const GrMorphologyEffect& m = drawEffect.castEffect<GrMorphologyEffect>(); | 383 const GrMorphologyEffect& m = drawEffect.castEffect<GrMorphologyEffect>(); |
386 EffectKey key = static_cast<EffectKey>(m.radius()); | 384 EffectKey key = static_cast<EffectKey>(m.radius()); |
387 key |= (m.type() << 8); | 385 key |= (m.type() << 8); |
388 key <<= GrGLEffectMatrix::kKeyBits; | 386 return key; |
389 EffectKey matrixKey = GrGLEffectMatrix::GenKey(m.getMatrix(), | |
390 drawEffect, | |
391 m.coordsType(), | |
392 m.texture(0)); | |
393 return key | matrixKey; | |
394 } | 387 } |
395 | 388 |
396 void GrGLMorphologyEffect::setData(const GrGLUniformManager& uman, | 389 void GrGLMorphologyEffect::setData(const GrGLUniformManager& uman, |
397 const GrDrawEffect& drawEffect) { | 390 const GrDrawEffect& drawEffect) { |
398 const Gr1DKernelEffect& kern = drawEffect.castEffect<Gr1DKernelEffect>(); | 391 const Gr1DKernelEffect& kern = drawEffect.castEffect<Gr1DKernelEffect>(); |
399 GrTexture& texture = *kern.texture(0); | 392 GrTexture& texture = *kern.texture(0); |
400 // the code we generated was for a specific kernel radius | 393 // the code we generated was for a specific kernel radius |
401 SkASSERT(kern.radius() == fRadius); | 394 SkASSERT(kern.radius() == fRadius); |
402 float imageIncrement[2] = { 0 }; | 395 float imageIncrement[2] = { 0 }; |
403 switch (kern.direction()) { | 396 switch (kern.direction()) { |
404 case Gr1DKernelEffect::kX_Direction: | 397 case Gr1DKernelEffect::kX_Direction: |
405 imageIncrement[0] = 1.0f / texture.width(); | 398 imageIncrement[0] = 1.0f / texture.width(); |
406 break; | 399 break; |
407 case Gr1DKernelEffect::kY_Direction: | 400 case Gr1DKernelEffect::kY_Direction: |
408 imageIncrement[1] = 1.0f / texture.height(); | 401 imageIncrement[1] = 1.0f / texture.height(); |
409 break; | 402 break; |
410 default: | 403 default: |
411 GrCrash("Unknown filter direction."); | 404 GrCrash("Unknown filter direction."); |
412 } | 405 } |
413 uman.set2fv(fImageIncrementUni, 0, 1, imageIncrement); | 406 uman.set2fv(fImageIncrementUni, 0, 1, imageIncrement); |
414 fEffectMatrix.setData(uman, kern.getMatrix(), drawEffect, kern.texture(0)); | |
415 } | 407 } |
416 | 408 |
417 /////////////////////////////////////////////////////////////////////////////// | 409 /////////////////////////////////////////////////////////////////////////////// |
418 | 410 |
419 GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture, | 411 GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture, |
420 Direction direction, | 412 Direction direction, |
421 int radius, | 413 int radius, |
422 MorphologyType type) | 414 MorphologyType type) |
423 : Gr1DKernelEffect(texture, direction, radius) | 415 : Gr1DKernelEffect(texture, direction, radius) |
424 , fType(type) { | 416 , fType(type) { |
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589 | 581 |
590 if (!apply_morphology(input, bounds, GrMorphologyEffect::kErode_MorphologyTy
pe, radius(), result)) { | 582 if (!apply_morphology(input, bounds, GrMorphologyEffect::kErode_MorphologyTy
pe, radius(), result)) { |
591 return false; | 583 return false; |
592 } | 584 } |
593 offset->fX += bounds.left(); | 585 offset->fX += bounds.left(); |
594 offset->fY += bounds.top(); | 586 offset->fY += bounds.top(); |
595 return true; | 587 return true; |
596 } | 588 } |
597 | 589 |
598 #endif | 590 #endif |
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