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 #include "src/gpu/ganesh/ops/DashLinePathRenderer.h"
8
9 #include "include/core/SkPoint.h"
10 #include "include/gpu/ganesh/GrRecordingContext.h"
11 #include "include/private/base/SkAssert.h"
12 #include "include/private/gpu/ganesh/GrTypesPriv.h"
13 #include "src/gpu/ganesh/GrAuditTrail.h"
14 #include "src/gpu/ganesh/GrRecordingContextPriv.h"
15 #include "src/gpu/ganesh/GrStyle.h"
16 #include "src/gpu/ganesh/SurfaceDrawContext.h"
17 #include "src/gpu/ganesh/geometry/GrStyledShape.h"
18 #include "src/gpu/ganesh/ops/DashOp.h"
19 #include "src/gpu/ganesh/ops/GrOp.h"
20
21 #include <utility>
22
23 namespace skgpu::ganesh {
24
onCanDrawPath(const CanDrawPathArgs & args) const25 skgpu::ganesh::PathRenderer::CanDrawPath DashLinePathRenderer::onCanDrawPath(
26 const CanDrawPathArgs& args) const {
27 SkPoint pts[2];
28 bool inverted;
29 if (args.fShape->style().isDashed() && args.fShape->asLine(pts, &inverted)) {
30 // We should never have an inverse dashed case.
31 SkASSERT(!inverted);
32 if (!DashOp::CanDrawDashLine(pts, args.fShape->style(), *args.fViewMatrix)) {
33 return CanDrawPath::kNo;
34 }
35 return CanDrawPath::kYes;
36 }
37 return CanDrawPath::kNo;
38 }
39
onDrawPath(const DrawPathArgs & args)40 bool DashLinePathRenderer::onDrawPath(const DrawPathArgs& args) {
41 GR_AUDIT_TRAIL_AUTO_FRAME(args.fContext->priv().auditTrail(),
42 "DashLinePathRenderer::onDrawPath");
43 DashOp::AAMode aaMode;
44 switch (args.fAAType) {
45 case GrAAType::kNone:
46 aaMode = DashOp::AAMode::kNone;
47 break;
48 case GrAAType::kMSAA:
49 // In this mode we will use aa between dashes but the outer border uses MSAA. Otherwise,
50 // we can wind up with external edges antialiased and internal edges unantialiased.
51 aaMode = DashOp::AAMode::kCoverageWithMSAA;
52 break;
53 case GrAAType::kCoverage:
54 aaMode = DashOp::AAMode::kCoverage;
55 break;
56 }
57 SkPoint pts[2];
58 SkAssertResult(args.fShape->asLine(pts, nullptr));
59 GrOp::Owner op = DashOp::MakeDashLineOp(args.fContext, std::move(args.fPaint),
60 *args.fViewMatrix, pts, aaMode, args.fShape->style(),
61 args.fUserStencilSettings);
62 if (!op) {
63 return false;
64 }
65 args.fSurfaceDrawContext->addDrawOp(args.fClip, std::move(op));
66 return true;
67 }
68
69 } // namespace skgpu::ganesh
70