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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrCCDrawPathsOp_DEFINED
#define GrCCDrawPathsOp_DEFINED
#include "GrShape.h"
#include "SkTInternalLList.h"
#include "ccpr/GrCCSTLList.h"
#include "ops/GrDrawOp.h"
struct GrCCPerFlushResourceSpecs;
class GrCCAtlas;
class GrOnFlushResourceProvider;
class GrCCPathCache;
class GrCCPathCacheEntry;
class GrCCPerFlushResources;
class GrCCPerOpListPaths;
/**
* This is the Op that draws paths to the actual canvas, using atlases generated by CCPR.
*/
class GrCCDrawPathsOp : public GrDrawOp {
public:
DEFINE_OP_CLASS_ID
SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrCCDrawPathsOp);
static std::unique_ptr<GrCCDrawPathsOp> Make(GrContext*, const SkIRect& clipIBounds,
const SkMatrix&, const GrShape&,
const SkRect& devBounds, GrPaint&&);
~GrCCDrawPathsOp() override;
const char* name() const override { return "GrCCDrawPathsOp"; }
FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
RequiresDstTexture finalize(const GrCaps&, const GrAppliedClip*) override;
bool onCombineIfPossible(GrOp*, const GrCaps&) override;
void visitProxies(const VisitProxyFunc& fn) const override { fProcessors.visitProxies(fn); }
void onPrepare(GrOpFlushState*) override {}
void wasRecorded(GrCCPerOpListPaths* owningPerOpListPaths);
// Makes decisions about how to draw each path (cached, copied, rendered, etc.), and
// increments/fills out the corresponding GrCCPerFlushResourceSpecs. 'stashedAtlasKey', if
// valid, references the mainline coverage count atlas from the previous flush. Paths found in
// this atlas will be copied to more permanent atlases in the resource cache.
void accountForOwnPaths(GrCCPathCache*, GrOnFlushResourceProvider*,
const GrUniqueKey& stashedAtlasKey, GrCCPerFlushResourceSpecs*);
// Allows the caller to decide whether to copy paths out of the stashed atlas and into the
// resource cache, or to just re-render the paths from scratch. If there aren't many copies or
// the copies would only fill a small atlas, it's probably best to just re-render.
enum class DoCopiesToCache : bool {
kNo = false,
kYes = true
};
// Allocates the GPU resources indicated by accountForOwnPaths(), in preparation for drawing. If
// DoCopiesToCache is kNo, the paths slated for copy will instead be re-rendered from scratch.
//
// NOTE: If using DoCopiesToCache::kNo, it is the caller's responsibility to call
// convertCopiesToRenders() on the GrCCPerFlushResourceSpecs.
void setupResources(GrOnFlushResourceProvider*, GrCCPerFlushResources*, DoCopiesToCache);
void onExecute(GrOpFlushState*) override;
private:
friend class GrOpMemoryPool;
enum class Visibility {
kPartial,
kMostlyComplete, // (i.e., can we cache the whole path mask if we think it will be reused?)
kComplete
};
GrCCDrawPathsOp(const SkMatrix&, const GrShape&, const SkIRect& shapeDevIBounds,
const SkIRect& maskDevIBounds, Visibility maskVisibility,
const SkRect& devBounds, GrPaint&&);
void recordInstance(const GrTextureProxy* atlasProxy, int instanceIdx);
const SkMatrix fViewMatrixIfUsingLocalCoords;
struct SingleDraw {
SingleDraw(const SkMatrix&, const GrShape&, const SkIRect& shapeDevIBounds,
const SkIRect& maskDevIBounds, Visibility maskVisibility, GrColor);
~SingleDraw();
SkMatrix fMatrix;
const GrShape fShape;
const SkIRect fShapeDevIBounds;
SkIRect fMaskDevIBounds;
Visibility fMaskVisibility;
GrColor fColor;
sk_sp<GrCCPathCacheEntry> fCacheEntry;
sk_sp<GrTextureProxy> fCachedAtlasProxy;
SkIVector fCachedMaskShift;
SingleDraw* fNext = nullptr;
};
GrCCSTLList<SingleDraw> fDraws;
SkDEBUGCODE(int fNumDraws = 1);
GrCCPerOpListPaths* fOwningPerOpListPaths = nullptr;
GrProcessorSet fProcessors;
struct InstanceRange {
const GrTextureProxy* fAtlasProxy;
int fEndInstanceIdx;
};
SkSTArray<2, InstanceRange, true> fInstanceRanges;
int fBaseInstance SkDEBUGCODE(= -1);
};
#endif
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