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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 "SkArithmeticMode.h" | 8 #include "SkArithmeticMode.h" |
| 9 #include "SkColorPriv.h" | 9 #include "SkColorPriv.h" |
| 10 #include "SkFlattenableBuffers.h" | 10 #include "SkFlattenableBuffers.h" |
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| 243 | 243 |
| 244 virtual void emitCode(GrGLShaderBuilder*, | 244 virtual void emitCode(GrGLShaderBuilder*, |
| 245 const GrDrawEffect&, | 245 const GrDrawEffect&, |
| 246 EffectKey, | 246 EffectKey, |
| 247 const char* outputColor, | 247 const char* outputColor, |
| 248 const char* inputColor, | 248 const char* inputColor, |
| 249 const TextureSamplerArray&) SK_OVERRIDE; | 249 const TextureSamplerArray&) SK_OVERRIDE; |
| 250 | 250 |
| 251 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); | 251 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); |
| 252 | 252 |
| 253 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE; | 253 virtual void setData(const GrGLContext&, const GrDrawEffect&) SK_OVERRIDE; |
| 254 | 254 |
| 255 private: | 255 private: |
| 256 static const GrEffect::CoordsType kCoordsType = GrEffect::kLocal_CoordsType; | 256 static const GrEffect::CoordsType kCoordsType = GrEffect::kLocal_CoordsType; |
| 257 GrGLEffectMatrix fBackgroundEffectMatrix; | 257 GrGLEffectMatrix fBackgroundEffectMatrix; |
| 258 GrGLUniformManager::UniformHandle fKUni; | 258 GrGLUniform* fKUni; |
| 259 | 259 |
| 260 typedef GrGLEffect INHERITED; | 260 typedef GrGLEffect INHERITED; |
| 261 }; | 261 }; |
| 262 | 262 |
| 263 /////////////////////////////////////////////////////////////////////////////// | 263 /////////////////////////////////////////////////////////////////////////////// |
| 264 | 264 |
| 265 class GrArithmeticEffect : public GrEffect { | 265 class GrArithmeticEffect : public GrEffect { |
| 266 public: | 266 public: |
| 267 static GrEffectRef* Create(float k1, float k2, float k3, float k4, GrTexture
* background) { | 267 static GrEffectRef* Create(float k1, float k2, float k3, float k4, GrTexture
* background) { |
| 268 AutoEffectUnref effect(SkNEW_ARGS(GrArithmeticEffect, (k1, k2, k3, k4, b
ackground))); | 268 AutoEffectUnref effect(SkNEW_ARGS(GrArithmeticEffect, (k1, k2, k3, k4, b
ackground))); |
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| 358 samplers[0], | 358 samplers[0], |
| 359 bgCoords, | 359 bgCoords, |
| 360 bgCoordsType); | 360 bgCoordsType); |
| 361 builder->fsCodeAppendf(";\n"); | 361 builder->fsCodeAppendf(";\n"); |
| 362 dstColor = "bgColor"; | 362 dstColor = "bgColor"; |
| 363 } else { | 363 } else { |
| 364 dstColor = builder->dstColor(); | 364 dstColor = builder->dstColor(); |
| 365 } | 365 } |
| 366 | 366 |
| 367 GrAssert(NULL != dstColor); | 367 GrAssert(NULL != dstColor); |
| 368 fKUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, | 368 GrGLShaderBuilder::Uniform* KUni = |
| 369 kVec4f_GrSLType, "k"); | 369 builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec4f_GrSL
Type, "k"); |
| 370 const char* kUni = builder->getUniformCStr(fKUni); | 370 fKUni = KUni->glUniform(); |
| 371 |
| 372 const char* kUni = KUni->c_str(); |
| 371 | 373 |
| 372 // We don't try to optimize for this case at all | 374 // We don't try to optimize for this case at all |
| 373 if (NULL == inputColor) { | 375 if (NULL == inputColor) { |
| 374 builder->fsCodeAppendf("\t\tconst vec4 src = %s;\n", GrGLSLOnesVecf(4)); | 376 builder->fsCodeAppendf("\t\tconst vec4 src = %s;\n", GrGLSLOnesVecf(4)); |
| 375 } else { | 377 } else { |
| 376 builder->fsCodeAppendf("\t\tvec4 src = %s;\n", inputColor); | 378 builder->fsCodeAppendf("\t\tvec4 src = %s;\n", inputColor); |
| 377 if (gUseUnpremul) { | 379 if (gUseUnpremul) { |
| 378 builder->fsCodeAppendf("\t\tsrc.rgb = clamp(src.rgb / src.a, 0.0, 1.
0);\n"); | 380 builder->fsCodeAppendf("\t\tsrc.rgb = clamp(src.rgb / src.a, 0.0, 1.
0);\n"); |
| 379 } | 381 } |
| 380 } | 382 } |
| 381 | 383 |
| 382 builder->fsCodeAppendf("\t\tvec4 dst = %s;\n", dstColor); | 384 builder->fsCodeAppendf("\t\tvec4 dst = %s;\n", dstColor); |
| 383 if (gUseUnpremul) { | 385 if (gUseUnpremul) { |
| 384 builder->fsCodeAppendf("\t\tdst.rgb = clamp(dst.rgb / dst.a, 0.0, 1.0);\
n"); | 386 builder->fsCodeAppendf("\t\tdst.rgb = clamp(dst.rgb / dst.a, 0.0, 1.0);\
n"); |
| 385 } | 387 } |
| 386 | 388 |
| 387 builder->fsCodeAppendf("\t\t%s = %s.x * src * dst + %s.y * src + %s.z * dst
+ %s.w;\n", outputColor, kUni, kUni, kUni, kUni); | 389 builder->fsCodeAppendf("\t\t%s = %s.x * src * dst + %s.y * src + %s.z * dst
+ %s.w;\n", outputColor, kUni, kUni, kUni, kUni); |
| 388 builder->fsCodeAppendf("\t\t%s = clamp(%s, 0.0, 1.0);\n", outputColor, outpu
tColor); | 390 builder->fsCodeAppendf("\t\t%s = clamp(%s, 0.0, 1.0);\n", outputColor, outpu
tColor); |
| 389 if (gUseUnpremul) { | 391 if (gUseUnpremul) { |
| 390 builder->fsCodeAppendf("\t\t%s.rgb *= %s.a;\n", outputColor, outputColor
); | 392 builder->fsCodeAppendf("\t\t%s.rgb *= %s.a;\n", outputColor, outputColor
); |
| 391 } else { | 393 } else { |
| 392 builder->fsCodeAppendf("\t\t%s.rgb = min(%s.rgb, %s.a);\n", outputColor,
outputColor, outputColor); | 394 builder->fsCodeAppendf("\t\t%s.rgb = min(%s.rgb, %s.a);\n", outputColor,
outputColor, outputColor); |
| 393 } | 395 } |
| 394 } | 396 } |
| 395 | 397 |
| 396 void GrGLArithmeticEffect::setData(const GrGLUniformManager& uman, const GrDrawE
ffect& drawEffect) { | 398 void GrGLArithmeticEffect::setData(const GrGLContext& context, const GrDrawEffec
t& drawEffect) { |
| 397 const GrArithmeticEffect& arith = drawEffect.castEffect<GrArithmeticEffect>(
); | 399 const GrArithmeticEffect& arith = drawEffect.castEffect<GrArithmeticEffect>(
); |
| 398 uman.set4f(fKUni, arith.k1(), arith.k2(), arith.k3(), arith.k4()); | 400 fKUni->set4f(context, arith.k1(), arith.k2(), arith.k3(), arith.k4()); |
| 399 GrTexture* bgTex = arith.backgroundTexture(); | 401 GrTexture* bgTex = arith.backgroundTexture(); |
| 400 if (bgTex) { | 402 if (bgTex) { |
| 401 fBackgroundEffectMatrix.setData(uman, | 403 fBackgroundEffectMatrix.setData(context, |
| 402 GrEffect::MakeDivByTextureWHMatrix(bgTex
), | 404 GrEffect::MakeDivByTextureWHMatrix(bgTex
), |
| 403 drawEffect, | 405 drawEffect, |
| 404 bgTex); | 406 bgTex); |
| 405 } | 407 } |
| 406 } | 408 } |
| 407 | 409 |
| 408 GrGLEffect::EffectKey GrGLArithmeticEffect::GenKey(const GrDrawEffect& drawEffec
t, const GrGLCaps&) { | 410 GrGLEffect::EffectKey GrGLArithmeticEffect::GenKey(const GrDrawEffect& drawEffec
t, const GrGLCaps&) { |
| 409 const GrArithmeticEffect& effect = drawEffect.castEffect<GrArithmeticEffect>
(); | 411 const GrArithmeticEffect& effect = drawEffect.castEffect<GrArithmeticEffect>
(); |
| 410 GrTexture* bgTex = effect.backgroundTexture(); | 412 GrTexture* bgTex = effect.backgroundTexture(); |
| 411 EffectKey bgKey = 0; | 413 EffectKey bgKey = 0; |
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| 446 background); | 448 background); |
| 447 } | 449 } |
| 448 return true; | 450 return true; |
| 449 } | 451 } |
| 450 | 452 |
| 451 #endif | 453 #endif |
| 452 | 454 |
| 453 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkArithmeticMode) | 455 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkArithmeticMode) |
| 454 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkArithmeticMode_scalar) | 456 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkArithmeticMode_scalar) |
| 455 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END | 457 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |
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