1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "GrDashLinePathRenderer.h" 9 10 #include "GrAuditTrail.h" 11 #include "GrGpu.h" 12 #include "ops/GrDashOp.h" 13 #include "ops/GrMeshDrawOp.h" 14 15 GrPathRenderer::CanDrawPath 16 GrDashLinePathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const { 17 SkPoint pts[2]; 18 bool inverted; 19 if (args.fShape->style().isDashed() && args.fShape->asLine(pts, &inverted)) { 20 if (args.fAAType == GrAAType::kMixedSamples) { 21 return CanDrawPath::kNo; 22 } 23 // We should never have an inverse dashed case. 24 SkASSERT(!inverted); 25 if (!GrDashOp::CanDrawDashLine(pts, args.fShape->style(), *args.fViewMatrix)) { 26 return CanDrawPath::kNo; 27 } 28 return CanDrawPath::kYes; 29 } 30 return CanDrawPath::kNo; 31 } 32 33 bool GrDashLinePathRenderer::onDrawPath(const DrawPathArgs& args) { 34 GR_AUDIT_TRAIL_AUTO_FRAME(args.fRenderTargetContext->auditTrail(), 35 "GrDashLinePathRenderer::onDrawPath"); 36 GrDashOp::AAMode aaMode = GrDashOp::AAMode::kNone; 37 switch (args.fAAType) { 38 case GrAAType::kNone: 39 break; 40 case GrAAType::kCoverage: 41 case GrAAType::kMixedSamples: 42 aaMode = GrDashOp::AAMode::kCoverage; 43 break; 44 case GrAAType::kMSAA: 45 // In this mode we will use aa between dashes but the outer border uses MSAA. Otherwise, 46 // we can wind up with external edges antialiased and internal edges unantialiased. 47 aaMode = GrDashOp::AAMode::kCoverageWithMSAA; 48 break; 49 } 50 SkPoint pts[2]; 51 SkAssertResult(args.fShape->asLine(pts, nullptr)); 52 std::unique_ptr<GrDrawOp> op = 53 GrDashOp::MakeDashLineOp(std::move(args.fPaint), *args.fViewMatrix, pts, aaMode, 54 args.fShape->style(), args.fUserStencilSettings); 55 if (!op) { 56 return false; 57 } 58 args.fRenderTargetContext->addDrawOp(*args.fClip, std::move(op)); 59 return true; 60 } 61
