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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 "GrAAConvexPathRenderer.h" | 8 #include "GrAAConvexPathRenderer.h" |
| 9 | 9 |
| 10 #include "GrAAConvexTessellator.h" | 10 #include "GrAAConvexTessellator.h" |
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| 519 * distance with negative being inside, positive outside. The edge is specified
in | 519 * distance with negative being inside, positive outside. The edge is specified
in |
| 520 * window space (y-down). If either the third or fourth component of the interpo
lated | 520 * window space (y-down). If either the third or fourth component of the interpo
lated |
| 521 * vertex coord is > 0 then the pixel is considered outside the edge. This is us
ed to | 521 * vertex coord is > 0 then the pixel is considered outside the edge. This is us
ed to |
| 522 * attempt to trim to a portion of the infinite quad. | 522 * attempt to trim to a portion of the infinite quad. |
| 523 * Requires shader derivative instruction support. | 523 * Requires shader derivative instruction support. |
| 524 */ | 524 */ |
| 525 | 525 |
| 526 class QuadEdgeEffect : public GrGeometryProcessor { | 526 class QuadEdgeEffect : public GrGeometryProcessor { |
| 527 public: | 527 public: |
| 528 | 528 |
| 529 static GrGeometryProcessor* Create(GrColor color, const SkMatrix& localMatri
x, | 529 static sk_sp<GrGeometryProcessor> Make(GrColor color, const SkMatrix& localM
atrix, |
| 530 bool usesLocalCoords) { | 530 bool usesLocalCoords) { |
| 531 return new QuadEdgeEffect(color, localMatrix, usesLocalCoords); | 531 return sk_sp<GrGeometryProcessor>(new QuadEdgeEffect(color, localMatrix,
usesLocalCoords)); |
| 532 } | 532 } |
| 533 | 533 |
| 534 virtual ~QuadEdgeEffect() {} | 534 virtual ~QuadEdgeEffect() {} |
| 535 | 535 |
| 536 const char* name() const override { return "QuadEdge"; } | 536 const char* name() const override { return "QuadEdge"; } |
| 537 | 537 |
| 538 const Attribute* inPosition() const { return fInPosition; } | 538 const Attribute* inPosition() const { return fInPosition; } |
| 539 const Attribute* inQuadEdge() const { return fInQuadEdge; } | 539 const Attribute* inQuadEdge() const { return fInQuadEdge; } |
| 540 GrColor color() const { return fColor; } | 540 GrColor color() const { return fColor; } |
| 541 bool colorIgnored() const { return GrColor_ILLEGAL == fColor; } | 541 bool colorIgnored() const { return GrColor_ILLEGAL == fColor; } |
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| 662 SkMatrix fLocalMatrix; | 662 SkMatrix fLocalMatrix; |
| 663 bool fUsesLocalCoords; | 663 bool fUsesLocalCoords; |
| 664 | 664 |
| 665 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; | 665 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
| 666 | 666 |
| 667 typedef GrGeometryProcessor INHERITED; | 667 typedef GrGeometryProcessor INHERITED; |
| 668 }; | 668 }; |
| 669 | 669 |
| 670 GR_DEFINE_GEOMETRY_PROCESSOR_TEST(QuadEdgeEffect); | 670 GR_DEFINE_GEOMETRY_PROCESSOR_TEST(QuadEdgeEffect); |
| 671 | 671 |
| 672 const GrGeometryProcessor* QuadEdgeEffect::TestCreate(GrProcessorTestData* d) { | 672 sk_sp<GrGeometryProcessor> QuadEdgeEffect::TestCreate(GrProcessorTestData* d) { |
| 673 // Doesn't work without derivative instructions. | 673 // Doesn't work without derivative instructions. |
| 674 return d->fCaps->shaderCaps()->shaderDerivativeSupport() ? | 674 return d->fCaps->shaderCaps()->shaderDerivativeSupport() ? |
| 675 QuadEdgeEffect::Create(GrRandomColor(d->fRandom), | 675 QuadEdgeEffect::Make(GrRandomColor(d->fRandom), |
| 676 GrTest::TestMatrix(d->fRandom), | 676 GrTest::TestMatrix(d->fRandom), |
| 677 d->fRandom->nextBool()) : nullptr; | 677 d->fRandom->nextBool()) : nullptr; |
| 678 } | 678 } |
| 679 | 679 |
| 680 /////////////////////////////////////////////////////////////////////////////// | 680 /////////////////////////////////////////////////////////////////////////////// |
| 681 | 681 |
| 682 bool GrAAConvexPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const { | 682 bool GrAAConvexPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const { |
| 683 return (args.fShaderCaps->shaderDerivativeSupport() && args.fAntiAlias && | 683 return (args.fShaderCaps->shaderDerivativeSupport() && args.fAntiAlias && |
| 684 args.fStyle->isSimpleFill() && !args.fPath->isInverseFillType() && | 684 args.fStyle->isSimpleFill() && !args.fPath->isInverseFillType() && |
| 685 args.fPath->isConvex()); | 685 args.fPath->isConvex()); |
| 686 } | 686 } |
| 687 | 687 |
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| 711 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)
) = | 711 *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)
) = |
| 712 tess.coverage(i); | 712 tess.coverage(i); |
| 713 } | 713 } |
| 714 } | 714 } |
| 715 | 715 |
| 716 for (int i = 0; i < tess.numIndices(); ++i) { | 716 for (int i = 0; i < tess.numIndices(); ++i) { |
| 717 idxs[i] = tess.index(i); | 717 idxs[i] = tess.index(i); |
| 718 } | 718 } |
| 719 } | 719 } |
| 720 | 720 |
| 721 static const GrGeometryProcessor* create_fill_gp(bool tweakAlphaForCoverage, | 721 static sk_sp<GrGeometryProcessor> create_fill_gp(bool tweakAlphaForCoverage, |
| 722 const SkMatrix& viewMatrix, | 722 const SkMatrix& viewMatrix, |
| 723 bool usesLocalCoords, | 723 bool usesLocalCoords, |
| 724 bool coverageIgnored) { | 724 bool coverageIgnored) { |
| 725 using namespace GrDefaultGeoProcFactory; | 725 using namespace GrDefaultGeoProcFactory; |
| 726 | 726 |
| 727 Color color(Color::kAttribute_Type); | 727 Color color(Color::kAttribute_Type); |
| 728 Coverage::Type coverageType; | 728 Coverage::Type coverageType; |
| 729 // TODO remove coverage if coverage is ignored | 729 // TODO remove coverage if coverage is ignored |
| 730 /*if (coverageIgnored) { | 730 /*if (coverageIgnored) { |
| 731 coverageType = Coverage::kNone_Type; | 731 coverageType = Coverage::kNone_Type; |
| 732 } else*/ if (tweakAlphaForCoverage) { | 732 } else*/ if (tweakAlphaForCoverage) { |
| 733 coverageType = Coverage::kSolid_Type; | 733 coverageType = Coverage::kSolid_Type; |
| 734 } else { | 734 } else { |
| 735 coverageType = Coverage::kAttribute_Type; | 735 coverageType = Coverage::kAttribute_Type; |
| 736 } | 736 } |
| 737 Coverage coverage(coverageType); | 737 Coverage coverage(coverageType); |
| 738 LocalCoords localCoords(usesLocalCoords ? LocalCoords::kUsePosition_Type : | 738 LocalCoords localCoords(usesLocalCoords ? LocalCoords::kUsePosition_Type : |
| 739 LocalCoords::kUnused_Type); | 739 LocalCoords::kUnused_Type); |
| 740 return CreateForDeviceSpace(color, coverage, localCoords, viewMatrix); | 740 return MakeForDeviceSpace(color, coverage, localCoords, viewMatrix); |
| 741 } | 741 } |
| 742 | 742 |
| 743 class AAConvexPathBatch : public GrVertexBatch { | 743 class AAConvexPathBatch : public GrVertexBatch { |
| 744 public: | 744 public: |
| 745 DEFINE_BATCH_CLASS_ID | 745 DEFINE_BATCH_CLASS_ID |
| 746 struct Geometry { | 746 struct Geometry { |
| 747 GrColor fColor; | 747 GrColor fColor; |
| 748 SkMatrix fViewMatrix; | 748 SkMatrix fViewMatrix; |
| 749 SkPath fPath; | 749 SkPath fPath; |
| 750 }; | 750 }; |
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| 775 fBatch.fUsesLocalCoords = overrides.readsLocalCoords(); | 775 fBatch.fUsesLocalCoords = overrides.readsLocalCoords(); |
| 776 fBatch.fCoverageIgnored = !overrides.readsCoverage(); | 776 fBatch.fCoverageIgnored = !overrides.readsCoverage(); |
| 777 fBatch.fLinesOnly = SkPath::kLine_SegmentMask == fGeoData[0].fPath.getSe
gmentMasks(); | 777 fBatch.fLinesOnly = SkPath::kLine_SegmentMask == fGeoData[0].fPath.getSe
gmentMasks(); |
| 778 fBatch.fCanTweakAlphaForCoverage = overrides.canTweakAlphaForCoverage(); | 778 fBatch.fCanTweakAlphaForCoverage = overrides.canTweakAlphaForCoverage(); |
| 779 } | 779 } |
| 780 | 780 |
| 781 void prepareLinesOnlyDraws(Target* target) const { | 781 void prepareLinesOnlyDraws(Target* target) const { |
| 782 bool canTweakAlphaForCoverage = this->canTweakAlphaForCoverage(); | 782 bool canTweakAlphaForCoverage = this->canTweakAlphaForCoverage(); |
| 783 | 783 |
| 784 // Setup GrGeometryProcessor | 784 // Setup GrGeometryProcessor |
| 785 SkAutoTUnref<const GrGeometryProcessor> gp(create_fill_gp(canTweakAlphaF
orCoverage, | 785 sk_sp<GrGeometryProcessor> gp(create_fill_gp(canTweakAlphaForCoverage, |
| 786 this->viewMatr
ix(), | 786 this->viewMatrix(), |
| 787 this->usesLoca
lCoords(), | 787 this->usesLocalCoords(), |
| 788 this->coverage
Ignored())); | 788 this->coverageIgnored())); |
| 789 if (!gp) { | 789 if (!gp) { |
| 790 SkDebugf("Could not create GrGeometryProcessor\n"); | 790 SkDebugf("Could not create GrGeometryProcessor\n"); |
| 791 return; | 791 return; |
| 792 } | 792 } |
| 793 | 793 |
| 794 size_t vertexStride = gp->getVertexStride(); | 794 size_t vertexStride = gp->getVertexStride(); |
| 795 | 795 |
| 796 SkASSERT(canTweakAlphaForCoverage ? | 796 SkASSERT(canTweakAlphaForCoverage ? |
| 797 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAt
tr) : | 797 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAt
tr) : |
| 798 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorCo
verageAttr)); | 798 vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorCo
verageAttr)); |
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| 829 return; | 829 return; |
| 830 } | 830 } |
| 831 | 831 |
| 832 extract_verts(tess, verts, vertexStride, args.fColor, idxs, canTweak
AlphaForCoverage); | 832 extract_verts(tess, verts, vertexStride, args.fColor, idxs, canTweak
AlphaForCoverage); |
| 833 | 833 |
| 834 GrMesh mesh; | 834 GrMesh mesh; |
| 835 mesh.initIndexed(kTriangles_GrPrimitiveType, | 835 mesh.initIndexed(kTriangles_GrPrimitiveType, |
| 836 vertexBuffer, indexBuffer, | 836 vertexBuffer, indexBuffer, |
| 837 firstVertex, firstIndex, | 837 firstVertex, firstIndex, |
| 838 tess.numPts(), tess.numIndices()); | 838 tess.numPts(), tess.numIndices()); |
| 839 target->draw(gp, mesh); | 839 target->draw(gp.get(), mesh); |
| 840 } | 840 } |
| 841 } | 841 } |
| 842 | 842 |
| 843 void onPrepareDraws(Target* target) const override { | 843 void onPrepareDraws(Target* target) const override { |
| 844 #ifndef SK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS | 844 #ifndef SK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS |
| 845 if (this->linesOnly()) { | 845 if (this->linesOnly()) { |
| 846 this->prepareLinesOnlyDraws(target); | 846 this->prepareLinesOnlyDraws(target); |
| 847 return; | 847 return; |
| 848 } | 848 } |
| 849 #endif | 849 #endif |
| 850 | 850 |
| 851 int instanceCount = fGeoData.count(); | 851 int instanceCount = fGeoData.count(); |
| 852 | 852 |
| 853 SkMatrix invert; | 853 SkMatrix invert; |
| 854 if (this->usesLocalCoords() && !this->viewMatrix().invert(&invert)) { | 854 if (this->usesLocalCoords() && !this->viewMatrix().invert(&invert)) { |
| 855 SkDebugf("Could not invert viewmatrix\n"); | 855 SkDebugf("Could not invert viewmatrix\n"); |
| 856 return; | 856 return; |
| 857 } | 857 } |
| 858 | 858 |
| 859 // Setup GrGeometryProcessor | 859 // Setup GrGeometryProcessor |
| 860 SkAutoTUnref<GrGeometryProcessor> quadProcessor( | 860 sk_sp<GrGeometryProcessor> quadProcessor( |
| 861 QuadEdgeEffect::Create(this->color(), invert, this->usesLocalCoo
rds())); | 861 QuadEdgeEffect::Make(this->color(), invert, this->usesLocalCoord
s())); |
| 862 | 862 |
| 863 // TODO generate all segments for all paths and use one vertex buffer | 863 // TODO generate all segments for all paths and use one vertex buffer |
| 864 for (int i = 0; i < instanceCount; i++) { | 864 for (int i = 0; i < instanceCount; i++) { |
| 865 const Geometry& args = fGeoData[i]; | 865 const Geometry& args = fGeoData[i]; |
| 866 | 866 |
| 867 // We use the fact that SkPath::transform path does subdivision base
d on | 867 // We use the fact that SkPath::transform path does subdivision base
d on |
| 868 // perspective. Otherwise, we apply the view matrix when copying to
the | 868 // perspective. Otherwise, we apply the view matrix when copying to
the |
| 869 // segment representation. | 869 // segment representation. |
| 870 const SkMatrix* viewMatrix = &args.fViewMatrix; | 870 const SkMatrix* viewMatrix = &args.fViewMatrix; |
| 871 | 871 |
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| 917 | 917 |
| 918 SkSTArray<kPreallocDrawCnt, Draw, true> draws; | 918 SkSTArray<kPreallocDrawCnt, Draw, true> draws; |
| 919 create_vertices(segments, fanPt, &draws, verts, idxs); | 919 create_vertices(segments, fanPt, &draws, verts, idxs); |
| 920 | 920 |
| 921 GrMesh mesh; | 921 GrMesh mesh; |
| 922 | 922 |
| 923 for (int j = 0; j < draws.count(); ++j) { | 923 for (int j = 0; j < draws.count(); ++j) { |
| 924 const Draw& draw = draws[j]; | 924 const Draw& draw = draws[j]; |
| 925 mesh.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, index
Buffer, | 925 mesh.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, index
Buffer, |
| 926 firstVertex, firstIndex, draw.fVertexCnt, draw.
fIndexCnt); | 926 firstVertex, firstIndex, draw.fVertexCnt, draw.
fIndexCnt); |
| 927 target->draw(quadProcessor, mesh); | 927 target->draw(quadProcessor.get(), mesh); |
| 928 firstVertex += draw.fVertexCnt; | 928 firstVertex += draw.fVertexCnt; |
| 929 firstIndex += draw.fIndexCnt; | 929 firstIndex += draw.fIndexCnt; |
| 930 } | 930 } |
| 931 } | 931 } |
| 932 } | 932 } |
| 933 | 933 |
| 934 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } | 934 SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } |
| 935 | 935 |
| 936 AAConvexPathBatch(const Geometry& geometry) : INHERITED(ClassID()) { | 936 AAConvexPathBatch(const Geometry& geometry) : INHERITED(ClassID()) { |
| 937 fGeoData.push_back(geometry); | 937 fGeoData.push_back(geometry); |
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| 1026 DRAW_BATCH_TEST_DEFINE(AAConvexPathBatch) { | 1026 DRAW_BATCH_TEST_DEFINE(AAConvexPathBatch) { |
| 1027 AAConvexPathBatch::Geometry geometry; | 1027 AAConvexPathBatch::Geometry geometry; |
| 1028 geometry.fColor = GrRandomColor(random); | 1028 geometry.fColor = GrRandomColor(random); |
| 1029 geometry.fViewMatrix = GrTest::TestMatrixInvertible(random); | 1029 geometry.fViewMatrix = GrTest::TestMatrixInvertible(random); |
| 1030 geometry.fPath = GrTest::TestPathConvex(random); | 1030 geometry.fPath = GrTest::TestPathConvex(random); |
| 1031 | 1031 |
| 1032 return AAConvexPathBatch::Create(geometry); | 1032 return AAConvexPathBatch::Create(geometry); |
| 1033 } | 1033 } |
| 1034 | 1034 |
| 1035 #endif | 1035 #endif |
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