1/*
2 * Copyright 2018 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#ifndef GrCCDrawPathsOp_DEFINED
9#define GrCCDrawPathsOp_DEFINED
10
11#include "src/core/SkTInternalLList.h"
12#include "src/gpu/ccpr/GrCCPathCache.h"
13#include "src/gpu/ccpr/GrCCSTLList.h"
14#include "src/gpu/geometry/GrShape.h"
15#include "src/gpu/ops/GrDrawOp.h"
16
17class GrCCAtlas;
18class GrCCPerFlushResources;
19struct GrCCPerFlushResourceSpecs;
20struct GrCCPerOpsTaskPaths;
21class GrOnFlushResourceProvider;
22class GrRecordingContext;
23
24/**
25 * This is the Op that draws paths to the actual canvas, using atlases generated by CCPR.
26 */
27class GrCCDrawPathsOp : public GrDrawOp {
28public:
29 DEFINE_OP_CLASS_ID
30 SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrCCDrawPathsOp);
31
32 static std::unique_ptr<GrCCDrawPathsOp> Make(GrRecordingContext*, const SkIRect& clipIBounds,
33 const SkMatrix&, const GrShape&, GrPaint&&);
34 ~GrCCDrawPathsOp() override;
35
36 const char* name() const override { return "GrCCDrawPathsOp"; }
37 FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
38 GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*,
39 bool hasMixedSampledCoverage, GrClampType) override;
40 CombineResult onCombineIfPossible(GrOp*, GrRecordingContext::Arenas*, const GrCaps&) override;
41 void visitProxies(const VisitProxyFunc& fn) const override {
42 for (const auto& range : fInstanceRanges) {
43 fn(range.fAtlasProxy, GrMipMapped::kNo);
44 }
45 fProcessors.visitProxies(fn);
46 }
47 void onPrepare(GrOpFlushState*) override;
48
49 void addToOwningPerOpsTaskPaths(sk_sp<GrCCPerOpsTaskPaths> owningPerOpsTaskPaths);
50
51 // Makes decisions about how to draw each path (cached, copied, rendered, etc.), and
52 // increments/fills out the corresponding GrCCPerFlushResourceSpecs.
53 void accountForOwnPaths(GrCCPathCache*, GrOnFlushResourceProvider*, GrCCPerFlushResourceSpecs*);
54
55 // Allows the caller to decide whether to actually do the suggested copies from cached 16-bit
56 // coverage count atlases, and into 8-bit literal coverage atlases. Purely to save space.
57 enum class DoCopiesToA8Coverage : bool {
58 kNo = false,
59 kYes = true
60 };
61
62 // Allocates the GPU resources indicated by accountForOwnPaths(), in preparation for drawing. If
63 // DoCopiesToA8Coverage is kNo, the paths slated for copy will instead be left in their 16-bit
64 // coverage count atlases.
65 //
66 // NOTE: If using DoCopiesToA8Coverage::kNo, it is the caller's responsibility to have called
67 // cancelCopies() on the GrCCPerFlushResourceSpecs, prior to making this call.
68 void setupResources(GrCCPathCache*, GrOnFlushResourceProvider*, GrCCPerFlushResources*,
69 DoCopiesToA8Coverage);
70
71 void onExecute(GrOpFlushState*, const SkRect& chainBounds) override;
72
73private:
74 void onPrePrepare(GrRecordingContext*,
75 const GrSurfaceProxyView* writeView,
76 GrAppliedClip*,
77 const GrXferProcessor::DstProxyView&) override {}
78
79 friend class GrOpMemoryPool;
80
81 static std::unique_ptr<GrCCDrawPathsOp> InternalMake(GrRecordingContext*,
82 const SkIRect& clipIBounds,
83 const SkMatrix&, const GrShape&,
84 float strokeDevWidth,
85 const SkRect& conservativeDevBounds,
86 GrPaint&&);
87
88 GrCCDrawPathsOp(const SkMatrix&, const GrShape&, float strokeDevWidth,
89 const SkIRect& shapeConservativeIBounds, const SkIRect& maskDevIBounds,
90 const SkRect& conservativeDevBounds, GrPaint&&);
91
92 void recordInstance(
93 GrCCPathProcessor::CoverageMode, GrTextureProxy* atlasProxy, int instanceIdx);
94
95 const SkMatrix fViewMatrixIfUsingLocalCoords;
96
97 class SingleDraw {
98 public:
99 SingleDraw(const SkMatrix&, const GrShape&, float strokeDevWidth,
100 const SkIRect& shapeConservativeIBounds, const SkIRect& maskDevIBounds,
101 const SkPMColor4f&);
102
103 // See the corresponding methods in GrCCDrawPathsOp.
104 GrProcessorSet::Analysis finalize(
105 const GrCaps&, const GrAppliedClip*, bool hasMixedSampledCoverage, GrClampType,
106 GrProcessorSet*);
107 void accountForOwnPath(GrCCPathCache*, GrOnFlushResourceProvider*,
108 GrCCPerFlushResourceSpecs*);
109 void setupResources(GrCCPathCache*, GrOnFlushResourceProvider*, GrCCPerFlushResources*,
110 DoCopiesToA8Coverage, GrCCDrawPathsOp*);
111
112 private:
113 bool shouldCachePathMask(int maxRenderTargetSize) const;
114
115 SkMatrix fMatrix;
116 GrShape fShape;
117 float fStrokeDevWidth;
118 const SkIRect fShapeConservativeIBounds;
119 SkIRect fMaskDevIBounds;
120 SkPMColor4f fColor;
121
122 GrCCPathCache::OnFlushEntryRef fCacheEntry;
123 SkIVector fCachedMaskShift;
124 bool fDoCopyToA8Coverage = false;
125 bool fDoCachePathMask = false;
126 SkDEBUGCODE(bool fWasCountedAsRender = false);
127
128 SingleDraw* fNext = nullptr;
129
130 friend class GrCCSTLList<SingleDraw>; // To access fNext.
131 };
132
133 // Declare fOwningPerOpsTaskPaths first, before fDraws. The draws use memory allocated by
134 // fOwningPerOpsTaskPaths, so it must not be unreffed until after fDraws is destroyed.
135 sk_sp<GrCCPerOpsTaskPaths> fOwningPerOpsTaskPaths;
136
137 GrCCSTLList<SingleDraw> fDraws;
138 SkDEBUGCODE(int fNumDraws = 1);
139
140 GrProcessorSet fProcessors;
141
142 struct InstanceRange {
143 GrCCPathProcessor::CoverageMode fCoverageMode;
144 GrTextureProxy* fAtlasProxy;
145 int fEndInstanceIdx;
146 };
147
148 SkSTArray<2, InstanceRange, true> fInstanceRanges;
149 int fBaseInstance SkDEBUGCODE(= -1);
150};
151
152#endif
153