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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 "GrDashingEffect.h" | 8 #include "GrDashingEffect.h" |
| 9 | 9 |
| 10 #include "../GrAARectRenderer.h" | 10 #include "../GrAARectRenderer.h" |
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| 497 | 497 |
| 498 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; | 498 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
| 499 | 499 |
| 500 typedef GrGeometryProcessor INHERITED; | 500 typedef GrGeometryProcessor INHERITED; |
| 501 }; | 501 }; |
| 502 | 502 |
| 503 ////////////////////////////////////////////////////////////////////////////// | 503 ////////////////////////////////////////////////////////////////////////////// |
| 504 | 504 |
| 505 class GLDashingCircleEffect : public GrGLGeometryProcessor { | 505 class GLDashingCircleEffect : public GrGLGeometryProcessor { |
| 506 public: | 506 public: |
| 507 GLDashingCircleEffect(const GrBackendProcessorFactory&, | 507 GLDashingCircleEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| 508 const GrGeometryProcessor&, | |
| 509 const GrBatchTracker&); | |
| 510 | 508 |
| 511 virtual void emitCode(const EmitArgs&) SK_OVERRIDE; | 509 virtual void emitCode(const EmitArgs&) SK_OVERRIDE; |
| 512 | 510 |
| 513 static inline void GenKey(const GrGeometryProcessor&, | 511 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKe
yBuilder*); |
| 514 const GrBatchTracker&, | |
| 515 const GrGLCaps&, | |
| 516 GrProcessorKeyBuilder*); | |
| 517 | 512 |
| 518 virtual void setData(const GrGLProgramDataManager&, | 513 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
| 519 const GrGeometryProcessor&, | |
| 520 const GrBatchTracker&) SK_OVERRIDE; | |
| 521 | 514 |
| 522 private: | 515 private: |
| 523 GrGLProgramDataManager::UniformHandle fParamUniform; | 516 GrGLProgramDataManager::UniformHandle fParamUniform; |
| 524 SkScalar fPrevRadius; | 517 SkScalar fPrevRadius; |
| 525 SkScalar fPrevCenterX; | 518 SkScalar fPrevCenterX; |
| 526 SkScalar fPrevIntervalLength; | 519 SkScalar fPrevIntervalLength; |
| 527 typedef GrGLGeometryProcessor INHERITED; | 520 typedef GrGLGeometryProcessor INHERITED; |
| 528 }; | 521 }; |
| 529 | 522 |
| 530 GLDashingCircleEffect::GLDashingCircleEffect(const GrBackendProcessorFactory& fa
ctory, | 523 GLDashingCircleEffect::GLDashingCircleEffect(const GrBackendProcessorFactory& fa
ctory, |
| 531 const GrGeometryProcessor&, | 524 const GrProcessor&) |
| 532 const GrBatchTracker&) | |
| 533 : INHERITED (factory) { | 525 : INHERITED (factory) { |
| 534 fPrevRadius = SK_ScalarMin; | 526 fPrevRadius = SK_ScalarMin; |
| 535 fPrevCenterX = SK_ScalarMin; | 527 fPrevCenterX = SK_ScalarMin; |
| 536 fPrevIntervalLength = SK_ScalarMax; | 528 fPrevIntervalLength = SK_ScalarMax; |
| 537 } | 529 } |
| 538 | 530 |
| 539 void GLDashingCircleEffect::emitCode(const EmitArgs& args) { | 531 void GLDashingCircleEffect::emitCode(const EmitArgs& args) { |
| 540 const DashingCircleEffect& dce = args.fGP.cast<DashingCircleEffect>(); | 532 const DashingCircleEffect& dce = args.fGP.cast<DashingCircleEffect>(); |
| 541 const char *paramName; | 533 const char *paramName; |
| 542 // The param uniforms, xyz, refer to circle radius - 0.5, cicles center x co
ord, and | 534 // The param uniforms, xyz, refer to circle radius - 0.5, cicles center x co
ord, and |
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| 571 fsBuilder->codeAppendf("\t\tfloat diff = dist - %s.x;\n", paramName); | 563 fsBuilder->codeAppendf("\t\tfloat diff = dist - %s.x;\n", paramName); |
| 572 fsBuilder->codeAppend("\t\tdiff = 1.0 - diff;\n"); | 564 fsBuilder->codeAppend("\t\tdiff = 1.0 - diff;\n"); |
| 573 fsBuilder->codeAppend("\t\tfloat alpha = clamp(diff, 0.0, 1.0);\n"); | 565 fsBuilder->codeAppend("\t\tfloat alpha = clamp(diff, 0.0, 1.0);\n"); |
| 574 } else { | 566 } else { |
| 575 fsBuilder->codeAppendf("\t\tfloat alpha = 1.0;\n"); | 567 fsBuilder->codeAppendf("\t\tfloat alpha = 1.0;\n"); |
| 576 fsBuilder->codeAppendf("\t\talpha *= dist < %s.x + 0.5 ? 1.0 : 0.0;\n",
paramName); | 568 fsBuilder->codeAppendf("\t\talpha *= dist < %s.x + 0.5 ? 1.0 : 0.0;\n",
paramName); |
| 577 } | 569 } |
| 578 fsBuilder->codeAppendf("%s = vec4(alpha);", args.fOutputCoverage); | 570 fsBuilder->codeAppendf("%s = vec4(alpha);", args.fOutputCoverage); |
| 579 } | 571 } |
| 580 | 572 |
| 581 void GLDashingCircleEffect::setData(const GrGLProgramDataManager& pdman, | 573 void GLDashingCircleEffect::setData(const GrGLProgramDataManager& pdman |
| 582 const GrGeometryProcessor& processor, | 574 , const GrProcessor& processor) { |
| 583 const GrBatchTracker&) { | |
| 584 const DashingCircleEffect& dce = processor.cast<DashingCircleEffect>(); | 575 const DashingCircleEffect& dce = processor.cast<DashingCircleEffect>(); |
| 585 SkScalar radius = dce.getRadius(); | 576 SkScalar radius = dce.getRadius(); |
| 586 SkScalar centerX = dce.getCenterX(); | 577 SkScalar centerX = dce.getCenterX(); |
| 587 SkScalar intervalLength = dce.getIntervalLength(); | 578 SkScalar intervalLength = dce.getIntervalLength(); |
| 588 if (radius != fPrevRadius || centerX != fPrevCenterX || intervalLength != fP
revIntervalLength) { | 579 if (radius != fPrevRadius || centerX != fPrevCenterX || intervalLength != fP
revIntervalLength) { |
| 589 pdman.set3f(fParamUniform, radius - 0.5f, centerX, intervalLength); | 580 pdman.set3f(fParamUniform, radius - 0.5f, centerX, intervalLength); |
| 590 fPrevRadius = radius; | 581 fPrevRadius = radius; |
| 591 fPrevCenterX = centerX; | 582 fPrevCenterX = centerX; |
| 592 fPrevIntervalLength = intervalLength; | 583 fPrevIntervalLength = intervalLength; |
| 593 } | 584 } |
| 594 } | 585 } |
| 595 | 586 |
| 596 void GLDashingCircleEffect::GenKey(const GrGeometryProcessor& processor, | 587 void GLDashingCircleEffect::GenKey(const GrProcessor& processor, const GrGLCaps&
, |
| 597 const GrBatchTracker&, | |
| 598 const GrGLCaps&, | |
| 599 GrProcessorKeyBuilder* b) { | 588 GrProcessorKeyBuilder* b) { |
| 600 const DashingCircleEffect& dce = processor.cast<DashingCircleEffect>(); | 589 const DashingCircleEffect& dce = processor.cast<DashingCircleEffect>(); |
| 601 b->add32(dce.getEdgeType()); | 590 b->add32(dce.getEdgeType()); |
| 602 } | 591 } |
| 603 | 592 |
| 604 ////////////////////////////////////////////////////////////////////////////// | 593 ////////////////////////////////////////////////////////////////////////////// |
| 605 | 594 |
| 606 GrGeometryProcessor* DashingCircleEffect::Create(GrPrimitiveEdgeType edgeType, c
onst DashInfo& info, | 595 GrGeometryProcessor* DashingCircleEffect::Create(GrPrimitiveEdgeType edgeType, c
onst DashInfo& info, |
| 607 SkScalar radius) { | 596 SkScalar radius) { |
| 608 if (info.fCount != 2 || info.fIntervals[0] != 0) { | 597 if (info.fCount != 2 || info.fIntervals[0] != 0) { |
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| 716 | 705 |
| 717 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; | 706 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
| 718 | 707 |
| 719 typedef GrGeometryProcessor INHERITED; | 708 typedef GrGeometryProcessor INHERITED; |
| 720 }; | 709 }; |
| 721 | 710 |
| 722 ////////////////////////////////////////////////////////////////////////////// | 711 ////////////////////////////////////////////////////////////////////////////// |
| 723 | 712 |
| 724 class GLDashingLineEffect : public GrGLGeometryProcessor { | 713 class GLDashingLineEffect : public GrGLGeometryProcessor { |
| 725 public: | 714 public: |
| 726 GLDashingLineEffect(const GrBackendProcessorFactory&, | 715 GLDashingLineEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
| 727 const GrGeometryProcessor&, | |
| 728 const GrBatchTracker&); | |
| 729 | 716 |
| 730 virtual void emitCode(const EmitArgs&) SK_OVERRIDE; | 717 virtual void emitCode(const EmitArgs&) SK_OVERRIDE; |
| 731 | 718 |
| 732 static inline void GenKey(const GrGeometryProcessor&, | 719 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKe
yBuilder*); |
| 733 const GrBatchTracker&, | |
| 734 const GrGLCaps&, | |
| 735 GrProcessorKeyBuilder*); | |
| 736 | 720 |
| 737 virtual void setData(const GrGLProgramDataManager&, | 721 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_O
VERRIDE; |
| 738 const GrGeometryProcessor&, | |
| 739 const GrBatchTracker&) SK_OVERRIDE; | |
| 740 | 722 |
| 741 private: | 723 private: |
| 742 GrGLProgramDataManager::UniformHandle fRectUniform; | 724 GrGLProgramDataManager::UniformHandle fRectUniform; |
| 743 GrGLProgramDataManager::UniformHandle fIntervalUniform; | 725 GrGLProgramDataManager::UniformHandle fIntervalUniform; |
| 744 SkRect fPrevRect; | 726 SkRect fPrevRect; |
| 745 SkScalar fPrevIntervalLength; | 727 SkScalar fPrevIntervalLength; |
| 746 typedef GrGLGeometryProcessor INHERITED; | 728 typedef GrGLGeometryProcessor INHERITED; |
| 747 }; | 729 }; |
| 748 | 730 |
| 749 GLDashingLineEffect::GLDashingLineEffect(const GrBackendProcessorFactory& factor
y, | 731 GLDashingLineEffect::GLDashingLineEffect(const GrBackendProcessorFactory& factor
y, |
| 750 const GrGeometryProcessor&, | 732 const GrProcessor&) |
| 751 const GrBatchTracker&) | |
| 752 : INHERITED (factory) { | 733 : INHERITED (factory) { |
| 753 fPrevRect.fLeft = SK_ScalarNaN; | 734 fPrevRect.fLeft = SK_ScalarNaN; |
| 754 fPrevIntervalLength = SK_ScalarMax; | 735 fPrevIntervalLength = SK_ScalarMax; |
| 755 } | 736 } |
| 756 | 737 |
| 757 void GLDashingLineEffect::emitCode(const EmitArgs& args) { | 738 void GLDashingLineEffect::emitCode(const EmitArgs& args) { |
| 758 const DashingLineEffect& de = args.fGP.cast<DashingLineEffect>(); | 739 const DashingLineEffect& de = args.fGP.cast<DashingLineEffect>(); |
| 759 const char *rectName; | 740 const char *rectName; |
| 760 // The rect uniform's xyzw refer to (left + 0.5, top + 0.5, right - 0.5, bot
tom - 0.5), | 741 // The rect uniform's xyzw refer to (left + 0.5, top + 0.5, right - 0.5, bot
tom - 0.5), |
| 761 // respectively. | 742 // respectively. |
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| 804 } else { | 785 } else { |
| 805 // Assuming the bounding geometry is tight so no need to check y values | 786 // Assuming the bounding geometry is tight so no need to check y values |
| 806 fsBuilder->codeAppendf("\t\tfloat alpha = 1.0;\n"); | 787 fsBuilder->codeAppendf("\t\tfloat alpha = 1.0;\n"); |
| 807 fsBuilder->codeAppendf("\t\talpha *= (fragPosShifted.x - %s.x) > -0.5 ?
1.0 : 0.0;\n", rectName); | 788 fsBuilder->codeAppendf("\t\talpha *= (fragPosShifted.x - %s.x) > -0.5 ?
1.0 : 0.0;\n", rectName); |
| 808 fsBuilder->codeAppendf("\t\talpha *= (%s.z - fragPosShifted.x) >= -0.5 ?
1.0 : 0.0;\n", rectName); | 789 fsBuilder->codeAppendf("\t\talpha *= (%s.z - fragPosShifted.x) >= -0.5 ?
1.0 : 0.0;\n", rectName); |
| 809 } | 790 } |
| 810 fsBuilder->codeAppendf("%s = vec4(alpha);", args.fOutputCoverage); | 791 fsBuilder->codeAppendf("%s = vec4(alpha);", args.fOutputCoverage); |
| 811 } | 792 } |
| 812 | 793 |
| 813 void GLDashingLineEffect::setData(const GrGLProgramDataManager& pdman, | 794 void GLDashingLineEffect::setData(const GrGLProgramDataManager& pdman, |
| 814 const GrGeometryProcessor& processor, | 795 const GrProcessor& processor) { |
| 815 const GrBatchTracker&) { | |
| 816 const DashingLineEffect& de = processor.cast<DashingLineEffect>(); | 796 const DashingLineEffect& de = processor.cast<DashingLineEffect>(); |
| 817 const SkRect& rect = de.getRect(); | 797 const SkRect& rect = de.getRect(); |
| 818 SkScalar intervalLength = de.getIntervalLength(); | 798 SkScalar intervalLength = de.getIntervalLength(); |
| 819 if (rect != fPrevRect || intervalLength != fPrevIntervalLength) { | 799 if (rect != fPrevRect || intervalLength != fPrevIntervalLength) { |
| 820 pdman.set4f(fRectUniform, rect.fLeft + 0.5f, rect.fTop + 0.5f, | 800 pdman.set4f(fRectUniform, rect.fLeft + 0.5f, rect.fTop + 0.5f, |
| 821 rect.fRight - 0.5f, rect.fBottom - 0.5f); | 801 rect.fRight - 0.5f, rect.fBottom - 0.5f); |
| 822 pdman.set1f(fIntervalUniform, intervalLength); | 802 pdman.set1f(fIntervalUniform, intervalLength); |
| 823 fPrevRect = rect; | 803 fPrevRect = rect; |
| 824 fPrevIntervalLength = intervalLength; | 804 fPrevIntervalLength = intervalLength; |
| 825 } | 805 } |
| 826 } | 806 } |
| 827 | 807 |
| 828 void GLDashingLineEffect::GenKey(const GrGeometryProcessor& processor, | 808 void GLDashingLineEffect::GenKey(const GrProcessor& processor, const GrGLCaps&, |
| 829 const GrBatchTracker&, | |
| 830 const GrGLCaps&, | |
| 831 GrProcessorKeyBuilder* b) { | 809 GrProcessorKeyBuilder* b) { |
| 832 const DashingLineEffect& de = processor.cast<DashingLineEffect>(); | 810 const DashingLineEffect& de = processor.cast<DashingLineEffect>(); |
| 833 b->add32(de.getEdgeType()); | 811 b->add32(de.getEdgeType()); |
| 834 } | 812 } |
| 835 | 813 |
| 836 ////////////////////////////////////////////////////////////////////////////// | 814 ////////////////////////////////////////////////////////////////////////////// |
| 837 | 815 |
| 838 GrGeometryProcessor* DashingLineEffect::Create(GrPrimitiveEdgeType edgeType, | 816 GrGeometryProcessor* DashingLineEffect::Create(GrPrimitiveEdgeType edgeType, |
| 839 const DashInfo& info, | 817 const DashInfo& info, |
| 840 SkScalar strokeWidth) { | 818 SkScalar strokeWidth) { |
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| 904 switch (cap) { | 882 switch (cap) { |
| 905 case GrDashingEffect::kRound_DashCap: | 883 case GrDashingEffect::kRound_DashCap: |
| 906 return DashingCircleEffect::Create(edgeType, info, SkScalarHalf(stro
keWidth)); | 884 return DashingCircleEffect::Create(edgeType, info, SkScalarHalf(stro
keWidth)); |
| 907 case GrDashingEffect::kNonRound_DashCap: | 885 case GrDashingEffect::kNonRound_DashCap: |
| 908 return DashingLineEffect::Create(edgeType, info, strokeWidth); | 886 return DashingLineEffect::Create(edgeType, info, strokeWidth); |
| 909 default: | 887 default: |
| 910 SkFAIL("Unexpected dashed cap."); | 888 SkFAIL("Unexpected dashed cap."); |
| 911 } | 889 } |
| 912 return NULL; | 890 return NULL; |
| 913 } | 891 } |
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