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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #include "gl/builders/GrGLProgramBuilder.h" | 9 #include "gl/builders/GrGLProgramBuilder.h" |
10 #include "GrAAConvexPathRenderer.h" | 10 #include "GrAAConvexPathRenderer.h" |
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523 } | 523 } |
524 | 524 |
525 const GrShaderVar& inQuadEdge() const { return fInQuadEdge; } | 525 const GrShaderVar& inQuadEdge() const { return fInQuadEdge; } |
526 | 526 |
527 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { | 527 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { |
528 return GrTBackendEffectFactory<QuadEdgeEffect>::getInstance(); | 528 return GrTBackendEffectFactory<QuadEdgeEffect>::getInstance(); |
529 } | 529 } |
530 | 530 |
531 class GLEffect : public GrGLGeometryProcessor { | 531 class GLEffect : public GrGLGeometryProcessor { |
532 public: | 532 public: |
533 GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&) | 533 GLEffect(const GrBackendEffectFactory& factory, const GrEffect&) |
534 : INHERITED (factory) {} | 534 : INHERITED (factory) {} |
535 | 535 |
536 virtual void emitCode(GrGLFullProgramBuilder* builder, | 536 virtual void emitCode(GrGLFullProgramBuilder* builder, |
537 const GrDrawEffect& drawEffect, | 537 const GrEffect& effect, |
538 const GrEffectKey& key, | 538 const GrEffectKey& key, |
539 const char* outputColor, | 539 const char* outputColor, |
540 const char* inputColor, | 540 const char* inputColor, |
541 const TransformedCoordsArray&, | 541 const TransformedCoordsArray&, |
542 const TextureSamplerArray& samplers) SK_OVERRIDE { | 542 const TextureSamplerArray& samplers) SK_OVERRIDE { |
543 const char *vsName, *fsName; | 543 const char *vsName, *fsName; |
544 builder->addVarying(kVec4f_GrSLType, "QuadEdge", &vsName, &fsName); | 544 builder->addVarying(kVec4f_GrSLType, "QuadEdge", &vsName, &fsName); |
545 | 545 |
546 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBui
lder(); | 546 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBui
lder(); |
547 | 547 |
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562 fsName, fsName); | 562 fsName, fsName); |
563 fsBuilder->codeAppendf("\t\t\tedgeAlpha = (%s.x*%s.x - %s.y);\n", fs
Name, fsName, | 563 fsBuilder->codeAppendf("\t\t\tedgeAlpha = (%s.x*%s.x - %s.y);\n", fs
Name, fsName, |
564 fsName); | 564 fsName); |
565 fsBuilder->codeAppendf("\t\t\tedgeAlpha = " | 565 fsBuilder->codeAppendf("\t\t\tedgeAlpha = " |
566 "clamp(0.5 - edgeAlpha / length(gF), 0.0, 1.0
);\n\t\t}\n"); | 566 "clamp(0.5 - edgeAlpha / length(gF), 0.0, 1.0
);\n\t\t}\n"); |
567 | 567 |
568 | 568 |
569 fsBuilder->codeAppendf("\t%s = %s;\n", outputColor, | 569 fsBuilder->codeAppendf("\t%s = %s;\n", outputColor, |
570 (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeA
lpha")).c_str()); | 570 (GrGLSLExpr4(inputColor) * GrGLSLExpr1("edgeA
lpha")).c_str()); |
571 | 571 |
572 const GrShaderVar& inQuadEdge = drawEffect.castEffect<QuadEdgeEffect
>().inQuadEdge(); | 572 const GrShaderVar& inQuadEdge = effect.cast<QuadEdgeEffect>().inQuad
Edge(); |
573 GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder
(); | 573 GrGLVertexShaderBuilder* vsBuilder = builder->getVertexShaderBuilder
(); |
574 vsBuilder->codeAppendf("\t%s = %s;\n", vsName, inQuadEdge.c_str()); | 574 vsBuilder->codeAppendf("\t%s = %s;\n", vsName, inQuadEdge.c_str()); |
575 } | 575 } |
576 | 576 |
577 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffect
KeyBuilder*) {} | 577 static inline void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyB
uilder*) {} |
578 | 578 |
579 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&)
SK_OVERRIDE {} | 579 virtual void setData(const GrGLProgramDataManager&, const GrEffect&) SK_
OVERRIDE {} |
580 | 580 |
581 private: | 581 private: |
582 typedef GrGLGeometryProcessor INHERITED; | 582 typedef GrGLGeometryProcessor INHERITED; |
583 }; | 583 }; |
584 | 584 |
585 private: | 585 private: |
586 QuadEdgeEffect() | 586 QuadEdgeEffect() |
587 : fInQuadEdge(this->addVertexAttrib(GrShaderVar("inQuadEdge", | 587 : fInQuadEdge(this->addVertexAttrib(GrShaderVar("inQuadEdge", |
588 kVec4f_GrSLType, | 588 kVec4f_GrSLType, |
589 GrShaderVar::kAttribute_
TypeModifier))) { | 589 GrShaderVar::kAttribute_
TypeModifier))) { |
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713 vOffset, // start vertex | 713 vOffset, // start vertex |
714 0, // start index | 714 0, // start index |
715 draw.fVertexCnt, | 715 draw.fVertexCnt, |
716 draw.fIndexCnt, | 716 draw.fIndexCnt, |
717 &devBounds); | 717 &devBounds); |
718 vOffset += draw.fVertexCnt; | 718 vOffset += draw.fVertexCnt; |
719 } | 719 } |
720 | 720 |
721 return true; | 721 return true; |
722 } | 722 } |
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