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* Copyright 2017 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrOnFlushResourceProvider_DEFINED
#define GrOnFlushResourceProvider_DEFINED
#include "include/core/SkRefCnt.h"
#include "include/private/SkTArray.h"
#include "src/core/SkSpan.h"
#include "src/gpu/GrDeferredUpload.h"
#include "src/gpu/GrOpFlushState.h"
#include "src/gpu/GrResourceProvider.h"
class GrDrawingManager;
class GrOnFlushResourceProvider;
class GrSurfaceDrawContext;
class GrSurfaceProxy;
class SkColorSpace;
class SkSurfaceProps;
* This is the base class from which all pre-flush callback objects must be derived. It
* provides the "preFlush" / "postFlush" interface.
class GrOnFlushCallbackObject {
virtual ~GrOnFlushCallbackObject() {}
* The preFlush callback allows subsystems (e.g., text, path renderers) to create atlases
* for a specific flush. All the GrRenderTask IDs required for the flush are passed into the
* callback.
virtual void preFlush(GrOnFlushResourceProvider*, SkSpan<const uint32_t> renderTaskIDs) = 0;
* Called once flushing is complete and all renderTasks indicated by preFlush have been executed
* and released. startTokenForNextFlush can be used to track resources used in the current
* flush.
virtual void postFlush(GrDeferredUploadToken startTokenForNextFlush,
SkSpan<const uint32_t> renderTaskIDs) {}
* Tells the callback owner to hold onto this object when freeing GPU resources.
virtual bool retainOnFreeGpuResources() { return false; }
* This class is a shallow wrapper around the drawing manager. It is passed into the
* onFlush callbacks and is intended to limit the functionality available to them.
* It should never have additional data members or virtual methods.
class GrOnFlushResourceProvider {
using UseAllocator = GrSurfaceProxy::UseAllocator;
explicit GrOnFlushResourceProvider(GrDrawingManager* drawingMgr) : fDrawingMgr(drawingMgr) {}
std::unique_ptr<GrSurfaceDrawContext> makeRenderTargetContext(sk_sp<GrSurfaceProxy>,
GrSurfaceOrigin, GrColorType,
const SkSurfaceProps*);
void addTextureResolveTask(sk_sp<GrTextureProxy>, GrSurfaceProxy::ResolveFlags);
// Proxy unique key management. See GrProxyProvider.h.
bool assignUniqueKeyToProxy(const GrUniqueKey&, GrTextureProxy*);
void removeUniqueKeyFromProxy(GrTextureProxy*);
void processInvalidUniqueKey(const GrUniqueKey&);
sk_sp<GrTextureProxy> findOrCreateProxyByUniqueKey(const GrUniqueKey&, UseAllocator);
bool instatiateProxy(GrSurfaceProxy*);
// Creates a GPU buffer with a "dynamic" access pattern.
sk_sp<GrGpuBuffer> makeBuffer(GrGpuBufferType, size_t, const void* data = nullptr);
// Either finds and refs, or creates a static GPU buffer with the given data.
sk_sp<const GrGpuBuffer> findOrMakeStaticBuffer(GrGpuBufferType, size_t, const void* data,
const GrUniqueKey&);
uint32_t contextID() const;
const GrCaps* caps() const;
GrRecordingContext* recordingContext() const;
void printWarningMessage(const char* msg) const;
GrOnFlushResourceProvider(const GrOnFlushResourceProvider&) = delete;
GrOnFlushResourceProvider& operator=(const GrOnFlushResourceProvider&) = delete;
GrDrawingManager* fDrawingMgr;