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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 GrPreFlushResourceProvider_DEFINED
#define GrPreFlushResourceProvider_DEFINED
#include "GrTypes.h"
#include "GrNonAtomicRef.h"
// These two are just for GrPreFlushCallbackObject
#include "SkRefCnt.h"
#include "SkTDArray.h"
class GrDrawingManager;
class GrOpList;
class GrPreFlushResourceProvider;
class GrRenderTargetOpList;
class GrRenderTargetContext;
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" interface.
*/
class GrPreFlushCallbackObject : public GrNonAtomicRef<GrPreFlushCallbackObject> {
public:
virtual ~GrPreFlushCallbackObject() { }
/*
* The preFlush callback allows subsystems (e.g., text, path renderers) to create atlases
* for a specific flush. All the GrOpList IDs required for the flush are passed into the
* callback. The callback should return the render target contexts used to render the atlases
* in 'results'.
*/
virtual void preFlush(GrPreFlushResourceProvider*,
const uint32_t* opListIDs, int numOpListIDs,
SkTArray<sk_sp<GrRenderTargetContext>>* results) = 0;
private:
typedef SkRefCnt INHERITED;
};
/*
* This class is a shallow wrapper around the drawing manager. It is passed into the
* preFlush callbacks and is intended to limit the functionality available to them.
* It should never have additional data members or virtual methods.
*/
class GrPreFlushResourceProvider {
public:
sk_sp<GrRenderTargetContext> makeRenderTargetContext(const GrSurfaceDesc& desc,
sk_sp<SkColorSpace> colorSpace,
const SkSurfaceProps* props);
// TODO: we only need this entry point as long as we have to pre-allocate the atlas.
// Remove it ASAP.
sk_sp<GrRenderTargetContext> makeRenderTargetContext(sk_sp<GrSurfaceProxy> proxy,
sk_sp<SkColorSpace> colorSpace,
const SkSurfaceProps* props);
private:
explicit GrPreFlushResourceProvider(GrDrawingManager* drawingMgr) : fDrawingMgr(drawingMgr) {}
GrPreFlushResourceProvider(const GrPreFlushResourceProvider&); // unimpl
GrPreFlushResourceProvider& operator=(const GrPreFlushResourceProvider&); // unimpl
GrDrawingManager* fDrawingMgr;
friend class GrDrawingManager; // to construct this type.
};
#endif
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