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| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "SkDisplacementMapEffect.h" | 8 #include "SkDisplacementMapEffect.h" |
| 9 #include "SkReadBuffer.h" | 9 #include "SkReadBuffer.h" |
| 10 #include "SkWriteBuffer.h" | 10 #include "SkWriteBuffer.h" |
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| 279 virtual void emitCode(GrGLShaderBuilder*, | 279 virtual void emitCode(GrGLShaderBuilder*, |
| 280 const GrDrawEffect&, | 280 const GrDrawEffect&, |
| 281 const GrEffectKey&, | 281 const GrEffectKey&, |
| 282 const char* outputColor, | 282 const char* outputColor, |
| 283 const char* inputColor, | 283 const char* inputColor, |
| 284 const TransformedCoordsArray&, | 284 const TransformedCoordsArray&, |
| 285 const TextureSamplerArray&) SK_OVERRIDE; | 285 const TextureSamplerArray&) SK_OVERRIDE; |
| 286 | 286 |
| 287 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); | 287 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder*); |
| 288 | 288 |
| 289 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE; | 289 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_
OVERRIDE; |
| 290 | 290 |
| 291 private: | 291 private: |
| 292 SkDisplacementMapEffect::ChannelSelectorType fXChannelSelector; | 292 SkDisplacementMapEffect::ChannelSelectorType fXChannelSelector; |
| 293 SkDisplacementMapEffect::ChannelSelectorType fYChannelSelector; | 293 SkDisplacementMapEffect::ChannelSelectorType fYChannelSelector; |
| 294 GrGLUniformManager::UniformHandle fScaleUni; | 294 GrGLProgramDataManager::UniformHandle fScaleUni; |
| 295 | 295 |
| 296 typedef GrGLEffect INHERITED; | 296 typedef GrGLEffect INHERITED; |
| 297 }; | 297 }; |
| 298 | 298 |
| 299 /////////////////////////////////////////////////////////////////////////////// | 299 /////////////////////////////////////////////////////////////////////////////// |
| 300 | 300 |
| 301 class GrDisplacementMapEffect : public GrEffect { | 301 class GrDisplacementMapEffect : public GrEffect { |
| 302 public: | 302 public: |
| 303 static GrEffect* Create(SkDisplacementMapEffect::ChannelSelectorType xChanne
lSelector, | 303 static GrEffect* Create(SkDisplacementMapEffect::ChannelSelectorType xChanne
lSelector, |
| 304 SkDisplacementMapEffect::ChannelSelectorType yChanne
lSelector, | 304 SkDisplacementMapEffect::ChannelSelectorType yChanne
lSelector, |
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| 581 // FIXME : This can be achieved with a "clamp to border" texture repeat mode
and | 581 // FIXME : This can be achieved with a "clamp to border" texture repeat mode
and |
| 582 // a 0 border color instead of computing if cCoords is out of bounds
here. | 582 // a 0 border color instead of computing if cCoords is out of bounds
here. |
| 583 builder->fsCodeAppendf( | 583 builder->fsCodeAppendf( |
| 584 "bool %s = (%s.x < 0.0) || (%s.y < 0.0) || (%s.x > 1.0) || (%s.y > 1.0);
\t\t", | 584 "bool %s = (%s.x < 0.0) || (%s.y < 0.0) || (%s.x > 1.0) || (%s.y > 1.0);
\t\t", |
| 585 outOfBounds, cCoords, cCoords, cCoords, cCoords); | 585 outOfBounds, cCoords, cCoords, cCoords, cCoords); |
| 586 builder->fsCodeAppendf("%s = %s ? vec4(0.0) : ", outputColor, outOfBounds); | 586 builder->fsCodeAppendf("%s = %s ? vec4(0.0) : ", outputColor, outOfBounds); |
| 587 builder->fsAppendTextureLookup(samplers[1], cCoords, coords[1].type()); | 587 builder->fsAppendTextureLookup(samplers[1], cCoords, coords[1].type()); |
| 588 builder->fsCodeAppend(";\n"); | 588 builder->fsCodeAppend(";\n"); |
| 589 } | 589 } |
| 590 | 590 |
| 591 void GrGLDisplacementMapEffect::setData(const GrGLUniformManager& uman, | 591 void GrGLDisplacementMapEffect::setData(const GrGLProgramDataManager& pdman, |
| 592 const GrDrawEffect& drawEffect) { | 592 const GrDrawEffect& drawEffect) { |
| 593 const GrDisplacementMapEffect& displacementMap = | 593 const GrDisplacementMapEffect& displacementMap = |
| 594 drawEffect.castEffect<GrDisplacementMapEffect>(); | 594 drawEffect.castEffect<GrDisplacementMapEffect>(); |
| 595 GrTexture* colorTex = displacementMap.texture(1); | 595 GrTexture* colorTex = displacementMap.texture(1); |
| 596 SkScalar scaleX = SkScalarDiv(displacementMap.scale().fX, SkIntToScalar(colo
rTex->width())); | 596 SkScalar scaleX = SkScalarDiv(displacementMap.scale().fX, SkIntToScalar(colo
rTex->width())); |
| 597 SkScalar scaleY = SkScalarDiv(displacementMap.scale().fY, SkIntToScalar(colo
rTex->height())); | 597 SkScalar scaleY = SkScalarDiv(displacementMap.scale().fY, SkIntToScalar(colo
rTex->height())); |
| 598 uman.set2f(fScaleUni, SkScalarToFloat(scaleX), | 598 pdman.set2f(fScaleUni, SkScalarToFloat(scaleX), |
| 599 colorTex->origin() == kTopLeft_GrSurfaceOrigin ? | 599 colorTex->origin() == kTopLeft_GrSurfaceOrigin ? |
| 600 SkScalarToFloat(scaleY) : SkScalarToFloat(-scaleY)); | 600 SkScalarToFloat(scaleY) : SkScalarToFloat(-scaleY)); |
| 601 } | 601 } |
| 602 | 602 |
| 603 void GrGLDisplacementMapEffect::GenKey(const GrDrawEffect& drawEffect, | 603 void GrGLDisplacementMapEffect::GenKey(const GrDrawEffect& drawEffect, |
| 604 const GrGLCaps&, GrEffectKeyBuilder* b) { | 604 const GrGLCaps&, GrEffectKeyBuilder* b) { |
| 605 const GrDisplacementMapEffect& displacementMap = | 605 const GrDisplacementMapEffect& displacementMap = |
| 606 drawEffect.castEffect<GrDisplacementMapEffect>(); | 606 drawEffect.castEffect<GrDisplacementMapEffect>(); |
| 607 | 607 |
| 608 uint32_t xKey = displacementMap.xChannelSelector(); | 608 uint32_t xKey = displacementMap.xChannelSelector(); |
| 609 uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBit
s; | 609 uint32_t yKey = displacementMap.yChannelSelector() << kChannelSelectorKeyBit
s; |
| 610 | 610 |
| 611 b->add32(xKey | yKey); | 611 b->add32(xKey | yKey); |
| 612 } | 612 } |
| 613 #endif | 613 #endif |
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