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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 "GrAAConvexPathRenderer.h" | 9 #include "GrAAConvexPathRenderer.h" |
| 10 | 10 |
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| 551 /////////////////////////////////////////////////////////////////////////////// | 551 /////////////////////////////////////////////////////////////////////////////// |
| 552 | 552 |
| 553 bool GrAAConvexPathRenderer::canDrawPath(const SkPath& path, | 553 bool GrAAConvexPathRenderer::canDrawPath(const SkPath& path, |
| 554 const SkStrokeRec& stroke, | 554 const SkStrokeRec& stroke, |
| 555 const GrDrawTarget* target, | 555 const GrDrawTarget* target, |
| 556 bool antiAlias) const { | 556 bool antiAlias) const { |
| 557 return (target->caps()->shaderDerivativeSupport() && antiAlias && | 557 return (target->caps()->shaderDerivativeSupport() && antiAlias && |
| 558 stroke.isFillStyle() && !path.isInverseFillType() && path.isConvex()
); | 558 stroke.isFillStyle() && !path.isInverseFillType() && path.isConvex()
); |
| 559 } | 559 } |
| 560 | 560 |
| 561 namespace { |
| 562 |
| 563 // position + edge |
| 564 extern const GrVertexAttrib gPathAttribs[] = { |
| 565 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding
}, |
| 566 {kVec4f_GrVertexAttribType, sizeof(GrPoint), kEffect_GrVertexAttribBinding} |
| 567 }; |
| 568 |
| 569 }; |
| 570 |
| 561 bool GrAAConvexPathRenderer::onDrawPath(const SkPath& origPath, | 571 bool GrAAConvexPathRenderer::onDrawPath(const SkPath& origPath, |
| 562 const SkStrokeRec&, | 572 const SkStrokeRec&, |
| 563 GrDrawTarget* target, | 573 GrDrawTarget* target, |
| 564 bool antiAlias) { | 574 bool antiAlias) { |
| 565 | 575 |
| 566 const SkPath* path = &origPath; | 576 const SkPath* path = &origPath; |
| 567 if (path->isEmpty()) { | 577 if (path->isEmpty()) { |
| 568 return true; | 578 return true; |
| 569 } | 579 } |
| 570 | 580 |
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| 595 enum { | 605 enum { |
| 596 kPreallocSegmentCnt = 512 / sizeof(Segment), | 606 kPreallocSegmentCnt = 512 / sizeof(Segment), |
| 597 }; | 607 }; |
| 598 SkSTArray<kPreallocSegmentCnt, Segment, true> segments; | 608 SkSTArray<kPreallocSegmentCnt, Segment, true> segments; |
| 599 SkPoint fanPt; | 609 SkPoint fanPt; |
| 600 | 610 |
| 601 if (!get_segments(*path, *vm, &segments, &fanPt, &vCount, &iCount)) { | 611 if (!get_segments(*path, *vm, &segments, &fanPt, &vCount, &iCount)) { |
| 602 return false; | 612 return false; |
| 603 } | 613 } |
| 604 | 614 |
| 605 // position + edge | 615 drawState->setVertexAttribs<gPathAttribs>(SK_ARRAY_COUNT(gPathAttribs)); |
| 606 static const GrVertexAttrib kAttribs[] = { | |
| 607 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBin
ding}, | |
| 608 {kVec4f_GrVertexAttribType, sizeof(GrPoint), kEffect_GrVertexAttribBindi
ng} | |
| 609 }; | |
| 610 drawState->setVertexAttribs(kAttribs, SK_ARRAY_COUNT(kAttribs)); | |
| 611 | 616 |
| 612 enum { | 617 enum { |
| 613 // the edge effects share this stage with glyph rendering | 618 // the edge effects share this stage with glyph rendering |
| 614 // (kGlyphMaskStage in GrTextContext) && SW path rendering | 619 // (kGlyphMaskStage in GrTextContext) && SW path rendering |
| 615 // (kPathMaskStage in GrSWMaskHelper) | 620 // (kPathMaskStage in GrSWMaskHelper) |
| 616 kEdgeEffectStage = GrPaint::kTotalStages, | 621 kEdgeEffectStage = GrPaint::kTotalStages, |
| 617 }; | 622 }; |
| 618 static const int kEdgeAttrIndex = 1; | 623 static const int kEdgeAttrIndex = 1; |
| 619 GrEffectRef* quadEffect = QuadEdgeEffect::Create(); | 624 GrEffectRef* quadEffect = QuadEdgeEffect::Create(); |
| 620 drawState->setEffect(kEdgeEffectStage, quadEffect, kEdgeAttrIndex)->unref(); | 625 drawState->setEffect(kEdgeEffectStage, quadEffect, kEdgeAttrIndex)->unref(); |
| 621 | 626 |
| 622 GrDrawTarget::AutoReleaseGeometry arg(target, vCount, iCount); | 627 GrDrawTarget::AutoReleaseGeometry arg(target, vCount, iCount); |
| 623 if (!arg.succeeded()) { | 628 if (!arg.succeeded()) { |
| 624 return false; | 629 return false; |
| 625 } | 630 } |
| 626 GrAssert(sizeof(QuadVertex) == drawState->getVertexSize()); | 631 GrAssert(sizeof(QuadVertex) == drawState->getVertexSize()); |
| 627 verts = reinterpret_cast<QuadVertex*>(arg.vertices()); | 632 verts = reinterpret_cast<QuadVertex*>(arg.vertices()); |
| 628 idxs = reinterpret_cast<uint16_t*>(arg.indices()); | 633 idxs = reinterpret_cast<uint16_t*>(arg.indices()); |
| 629 | 634 |
| 630 create_vertices(segments, fanPt, verts, idxs); | 635 create_vertices(segments, fanPt, verts, idxs); |
| 631 | 636 |
| 632 target->drawIndexed(kTriangles_GrPrimitiveType, | 637 target->drawIndexed(kTriangles_GrPrimitiveType, |
| 633 0, // start vertex | 638 0, // start vertex |
| 634 0, // start index | 639 0, // start index |
| 635 vCount, | 640 vCount, |
| 636 iCount); | 641 iCount); |
| 637 | 642 |
| 638 return true; | 643 return true; |
| 639 } | 644 } |
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