xref: /aosp_15_r20/external/skia/src/gpu/ganesh/PathRenderer.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker /*
2*c8dee2aaSAndroid Build Coastguard Worker  * Copyright 2011 Google Inc.
3*c8dee2aaSAndroid Build Coastguard Worker  *
4*c8dee2aaSAndroid Build Coastguard Worker  * Use of this source code is governed by a BSD-style license that can be
5*c8dee2aaSAndroid Build Coastguard Worker  * found in the LICENSE file.
6*c8dee2aaSAndroid Build Coastguard Worker  */
7*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/PathRenderer.h"
8*c8dee2aaSAndroid Build Coastguard Worker 
9*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkMatrix.h"
10*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkPath.h"
11*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkRect.h"
12*c8dee2aaSAndroid Build Coastguard Worker #include "include/core/SkSize.h"
13*c8dee2aaSAndroid Build Coastguard Worker #include "include/gpu/ganesh/GrRecordingContext.h"
14*c8dee2aaSAndroid Build Coastguard Worker #include "include/private/gpu/ganesh/GrTypesPriv.h"
15*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/GrPaint.h"
16*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/GrRecordingContextPriv.h"
17*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/GrStyle.h"
18*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/GrUserStencilSettings.h"
19*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/SurfaceDrawContext.h"
20*c8dee2aaSAndroid Build Coastguard Worker #include "src/gpu/ganesh/geometry/GrStyledShape.h"
21*c8dee2aaSAndroid Build Coastguard Worker 
22*c8dee2aaSAndroid Build Coastguard Worker #include <utility>
23*c8dee2aaSAndroid Build Coastguard Worker 
24*c8dee2aaSAndroid Build Coastguard Worker namespace skgpu::ganesh {
25*c8dee2aaSAndroid Build Coastguard Worker 
26*c8dee2aaSAndroid Build Coastguard Worker #ifdef SK_DEBUG
validate() const27*c8dee2aaSAndroid Build Coastguard Worker void PathRenderer::StencilPathArgs::validate() const {
28*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(fContext);
29*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(fSurfaceDrawContext);
30*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(fClipConservativeBounds);
31*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(fViewMatrix);
32*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(fShape);
33*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(fShape->style().isSimpleFill());
34*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
35*c8dee2aaSAndroid Build Coastguard Worker     fShape->asPath(&path);
36*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(!path.isInverseFillType());
37*c8dee2aaSAndroid Build Coastguard Worker }
38*c8dee2aaSAndroid Build Coastguard Worker #endif
39*c8dee2aaSAndroid Build Coastguard Worker 
40*c8dee2aaSAndroid Build Coastguard Worker //////////////////////////////////////////////////////////////////////////////
41*c8dee2aaSAndroid Build Coastguard Worker 
getStencilSupport(const GrStyledShape & shape) const42*c8dee2aaSAndroid Build Coastguard Worker PathRenderer::StencilSupport PathRenderer::getStencilSupport(const GrStyledShape& shape) const {
43*c8dee2aaSAndroid Build Coastguard Worker     SkDEBUGCODE(SkPath path;)
44*c8dee2aaSAndroid Build Coastguard Worker     SkDEBUGCODE(shape.asPath(&path);)
45*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(shape.style().isSimpleFill());
46*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(!path.isInverseFillType());
47*c8dee2aaSAndroid Build Coastguard Worker     return this->onGetStencilSupport(shape);
48*c8dee2aaSAndroid Build Coastguard Worker }
49*c8dee2aaSAndroid Build Coastguard Worker 
drawPath(const DrawPathArgs & args)50*c8dee2aaSAndroid Build Coastguard Worker bool PathRenderer::drawPath(const DrawPathArgs& args) {
51*c8dee2aaSAndroid Build Coastguard Worker #ifdef SK_DEBUG
52*c8dee2aaSAndroid Build Coastguard Worker     args.validate();
53*c8dee2aaSAndroid Build Coastguard Worker     CanDrawPathArgs canArgs;
54*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fCaps = args.fContext->priv().caps();
55*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fProxy = args.fSurfaceDrawContext->asRenderTargetProxy();
56*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fClipConservativeBounds = args.fClipConservativeBounds;
57*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fViewMatrix = args.fViewMatrix;
58*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fShape = args.fShape;
59*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fPaint = &args.fPaint;
60*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fSurfaceProps = &args.fSurfaceDrawContext->surfaceProps();
61*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fAAType = args.fAAType;
62*c8dee2aaSAndroid Build Coastguard Worker     canArgs.validate();
63*c8dee2aaSAndroid Build Coastguard Worker 
64*c8dee2aaSAndroid Build Coastguard Worker     canArgs.fHasUserStencilSettings = !args.fUserStencilSettings->isUnused();
65*c8dee2aaSAndroid Build Coastguard Worker     SkASSERT(CanDrawPath::kNo != this->canDrawPath(canArgs));
66*c8dee2aaSAndroid Build Coastguard Worker     if (!args.fUserStencilSettings->isUnused()) {
67*c8dee2aaSAndroid Build Coastguard Worker         SkPath path;
68*c8dee2aaSAndroid Build Coastguard Worker         args.fShape->asPath(&path);
69*c8dee2aaSAndroid Build Coastguard Worker         SkASSERT(args.fShape->style().isSimpleFill());
70*c8dee2aaSAndroid Build Coastguard Worker         SkASSERT(kNoRestriction_StencilSupport == this->getStencilSupport(*args.fShape));
71*c8dee2aaSAndroid Build Coastguard Worker     }
72*c8dee2aaSAndroid Build Coastguard Worker #endif
73*c8dee2aaSAndroid Build Coastguard Worker     return this->onDrawPath(args);
74*c8dee2aaSAndroid Build Coastguard Worker }
75*c8dee2aaSAndroid Build Coastguard Worker 
GetPathDevBounds(const SkPath & path,SkISize devSize,const SkMatrix & matrix,SkRect * bounds)76*c8dee2aaSAndroid Build Coastguard Worker void PathRenderer::GetPathDevBounds(const SkPath& path,
77*c8dee2aaSAndroid Build Coastguard Worker                                     SkISize devSize,
78*c8dee2aaSAndroid Build Coastguard Worker                                     const SkMatrix& matrix,
79*c8dee2aaSAndroid Build Coastguard Worker                                     SkRect* bounds) {
80*c8dee2aaSAndroid Build Coastguard Worker     if (path.isInverseFillType()) {
81*c8dee2aaSAndroid Build Coastguard Worker         *bounds = SkRect::Make(devSize);
82*c8dee2aaSAndroid Build Coastguard Worker         return;
83*c8dee2aaSAndroid Build Coastguard Worker     }
84*c8dee2aaSAndroid Build Coastguard Worker     *bounds = path.getBounds();
85*c8dee2aaSAndroid Build Coastguard Worker     matrix.mapRect(bounds);
86*c8dee2aaSAndroid Build Coastguard Worker }
87*c8dee2aaSAndroid Build Coastguard Worker 
onStencilPath(const StencilPathArgs & args)88*c8dee2aaSAndroid Build Coastguard Worker void PathRenderer::onStencilPath(const StencilPathArgs& args) {
89*c8dee2aaSAndroid Build Coastguard Worker     static constexpr GrUserStencilSettings kIncrementStencil(
90*c8dee2aaSAndroid Build Coastguard Worker             GrUserStencilSettings::StaticInit<
91*c8dee2aaSAndroid Build Coastguard Worker                     0xffff,
92*c8dee2aaSAndroid Build Coastguard Worker                     GrUserStencilTest::kAlways,
93*c8dee2aaSAndroid Build Coastguard Worker                     0xffff,
94*c8dee2aaSAndroid Build Coastguard Worker                     GrUserStencilOp::kReplace,
95*c8dee2aaSAndroid Build Coastguard Worker                     GrUserStencilOp::kReplace,
96*c8dee2aaSAndroid Build Coastguard Worker                     0xffff>()
97*c8dee2aaSAndroid Build Coastguard Worker     );
98*c8dee2aaSAndroid Build Coastguard Worker 
99*c8dee2aaSAndroid Build Coastguard Worker     GrPaint paint;
100*c8dee2aaSAndroid Build Coastguard Worker     DrawPathArgs drawArgs{args.fContext,
101*c8dee2aaSAndroid Build Coastguard Worker                           std::move(paint),
102*c8dee2aaSAndroid Build Coastguard Worker                           &kIncrementStencil,
103*c8dee2aaSAndroid Build Coastguard Worker                           args.fSurfaceDrawContext,
104*c8dee2aaSAndroid Build Coastguard Worker                           nullptr,  // clip
105*c8dee2aaSAndroid Build Coastguard Worker                           args.fClipConservativeBounds,
106*c8dee2aaSAndroid Build Coastguard Worker                           args.fViewMatrix,
107*c8dee2aaSAndroid Build Coastguard Worker                           args.fShape,
108*c8dee2aaSAndroid Build Coastguard Worker                           (GrAA::kYes == args.fDoStencilMSAA) ? GrAAType::kMSAA : GrAAType::kNone,
109*c8dee2aaSAndroid Build Coastguard Worker                           false};
110*c8dee2aaSAndroid Build Coastguard Worker     this->drawPath(drawArgs);
111*c8dee2aaSAndroid Build Coastguard Worker }
112*c8dee2aaSAndroid Build Coastguard Worker 
113*c8dee2aaSAndroid Build Coastguard Worker }  // namespace skgpu::ganesh
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