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* Copyright 2019 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrRecordingContext_DEFINED
#define GrRecordingContext_DEFINED
#include "include/core/SkRefCnt.h"
#include "include/private/GrImageContext.h"
#include "include/private/SkTArray.h"
#include <map>
#include <string>
class GrAuditTrail;
class GrBackendFormat;
class GrDrawingManager;
class GrOnFlushCallbackObject;
class GrMemoryPool;
class GrProgramDesc;
class GrProgramInfo;
class GrProxyProvider;
class GrRecordingContextPriv;
class GrSubRunAllocator;
class GrSurfaceProxy;
class GrTextBlobRedrawCoordinator;
class GrThreadSafeCache;
class SkArenaAlloc;
class SkJSONWriter;
class SkString;
class GrRecordingContext : public GrImageContext {
~GrRecordingContext() override;
SK_API GrBackendFormat defaultBackendFormat(SkColorType ct, GrRenderable renderable) const {
return INHERITED::defaultBackendFormat(ct, renderable);
* Reports whether the GrDirectContext associated with this GrRecordingContext is abandoned.
* When called on a GrDirectContext it may actively check whether the underlying 3D API
* device/context has been disconnected before reporting the status. If so, calling this
* method will transition the GrDirectContext to the abandoned state.
bool abandoned() override { return INHERITED::abandoned(); }
* Can a SkSurface be created with the given color type. To check whether MSAA is supported
* use maxSurfaceSampleCountForColorType().
SK_API bool colorTypeSupportedAsSurface(SkColorType colorType) const {
if (kR16G16_unorm_SkColorType == colorType ||
kA16_unorm_SkColorType == colorType ||
kA16_float_SkColorType == colorType ||
kR16G16_float_SkColorType == colorType ||
kR16G16B16A16_unorm_SkColorType == colorType ||
kGray_8_SkColorType == colorType) {
return false;
return this->maxSurfaceSampleCountForColorType(colorType) > 0;
* Gets the maximum supported texture size.
SK_API int maxTextureSize() const;
* Gets the maximum supported render target size.
SK_API int maxRenderTargetSize() const;
* Can a SkImage be created with the given color type.
SK_API bool colorTypeSupportedAsImage(SkColorType) const;
* Gets the maximum supported sample count for a color type. 1 is returned if only non-MSAA
* rendering is supported for the color type. 0 is returned if rendering to this color type
* is not supported at all.
SK_API int maxSurfaceSampleCountForColorType(SkColorType) const;
// Provides access to functions that aren't part of the public API.
GrRecordingContextPriv priv();
const GrRecordingContextPriv priv() const; // NOLINT(readability-const-return-type)
// The collection of specialized memory arenas for different types of data recorded by a
// GrRecordingContext. Arenas does not maintain ownership of the pools it groups together.
class Arenas {
Arenas(SkArenaAlloc*, GrSubRunAllocator*);
// For storing pipelines and other complex data as-needed by ops
SkArenaAlloc* recordTimeAllocator() { return fRecordTimeAllocator; }
// For storing GrTextBlob SubRuns
GrSubRunAllocator* recordTimeSubRunAllocator() { return fRecordTimeSubRunAllocator; }
SkArenaAlloc* fRecordTimeAllocator;
GrSubRunAllocator* fRecordTimeSubRunAllocator;
friend class GrRecordingContextPriv; // for hidden functions
friend class SkDeferredDisplayList; // for OwnedArenas
friend class SkDeferredDisplayListPriv; // for ProgramData
// Like Arenas, but preserves ownership of the underlying pools.
class OwnedArenas {
OwnedArenas(bool ddlRecording);
Arenas get();
OwnedArenas& operator=(OwnedArenas&&);
bool fDDLRecording;
std::unique_ptr<SkArenaAlloc> fRecordTimeAllocator;
std::unique_ptr<GrSubRunAllocator> fRecordTimeSubRunAllocator;
GrRecordingContext(sk_sp<GrContextThreadSafeProxy>, bool ddlRecording);
bool init() override;
void abandonContext() override;
GrDrawingManager* drawingManager();
// There is no going back from this method. It should only be called to control the timing
// during abandon or destruction of the context.
void destroyDrawingManager();
Arenas arenas() { return fArenas.get(); }
// This entry point should only be used for DDL creation where we want the ops' lifetime to
// match that of the DDL.
OwnedArenas&& detachArenas();
GrProxyProvider* proxyProvider() { return fProxyProvider.get(); }
const GrProxyProvider* proxyProvider() const { return fProxyProvider.get(); }
struct ProgramData {
ProgramData(std::unique_ptr<const GrProgramDesc>, const GrProgramInfo*);
ProgramData(ProgramData&&); // for SkTArray
ProgramData(const ProgramData&) = delete;
const GrProgramDesc& desc() const { return *fDesc; }
const GrProgramInfo& info() const { return *fInfo; }
// TODO: store the GrProgramDescs in the 'fRecordTimeData' arena
std::unique_ptr<const GrProgramDesc> fDesc;
// The program infos should be stored in 'fRecordTimeData' so do not need to be ref
// counted or deleted in the destructor.
const GrProgramInfo* fInfo = nullptr;
// This entry point gives the recording context a chance to cache the provided
// programInfo. The DDL context takes this opportunity to store programInfos as a sidecar
// to the DDL.
virtual void recordProgramInfo(const GrProgramInfo*) {}
// This asks the recording context to return any programInfos it may have collected
// via the 'recordProgramInfo' call. It is up to the caller to ensure that the lifetime
// of the programInfos matches the intended use. For example, in DDL-record mode it
// is known that all the programInfos will have been allocated in an arena with the
// same lifetime at the DDL itself.
virtual void detachProgramData(SkTArray<ProgramData>*) {}
GrTextBlobRedrawCoordinator* getTextBlobRedrawCoordinator();
const GrTextBlobRedrawCoordinator* getTextBlobRedrawCoordinator() const;
GrThreadSafeCache* threadSafeCache();
const GrThreadSafeCache* threadSafeCache() const;
* Registers an object for flush-related callbacks. (See GrOnFlushCallbackObject.)
* NOTE: the drawing manager tracks this object as a raw pointer; it is up to the caller to
* ensure its lifetime is tied to that of the context.
void addOnFlushCallbackObject(GrOnFlushCallbackObject*);
GrRecordingContext* asRecordingContext() override { return this; }
class Stats {
Stats() = default;
void reset() { *this = {}; }
int numPathMasksGenerated() const { return fNumPathMasksGenerated; }
void incNumPathMasksGenerated() { fNumPathMasksGenerated++; }
int numPathMaskCacheHits() const { return fNumPathMaskCacheHits; }
void incNumPathMasksCacheHits() { fNumPathMaskCacheHits++; }
void dump(SkString* out) const;
void dumpKeyValuePairs(SkTArray<SkString>* keys, SkTArray<double>* values) const;
int fNumPathMasksGenerated{0};
int fNumPathMaskCacheHits{0};
#else // GR_GPU_STATS
void incNumPathMasksGenerated() {}
void incNumPathMasksCacheHits() {}
void dump(SkString*) const {}
void dumpKeyValuePairs(SkTArray<SkString>* keys, SkTArray<double>* values) const {}
#endif // GR_GPU_STATS
} fStats;
struct DMSAAStats {
void dumpKeyValuePairs(SkTArray<SkString>* keys, SkTArray<double>* values) const;
void dump() const;
void merge(const DMSAAStats&);
int fNumRenderPasses = 0;
int fNumMultisampleRenderPasses = 0;
std::map<std::string, int> fTriggerCounts;
Stats* stats() { return &fStats; }
const Stats* stats() const { return &fStats; }
void dumpJSON(SkJSONWriter*) const;
// Delete last in case other objects call it during destruction.
std::unique_ptr<GrAuditTrail> fAuditTrail;
OwnedArenas fArenas;
std::unique_ptr<GrDrawingManager> fDrawingManager;
std::unique_ptr<GrProxyProvider> fProxyProvider;
int fSuppressWarningMessages = 0;
using INHERITED = GrImageContext;
* Safely cast a possibly-null base context to direct context.
static inline GrDirectContext* GrAsDirectContext(GrContext_Base* base) {
return base ? base->asDirectContext() : nullptr;