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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 GrDeferredUpload_DEFINED
#define GrDeferredUpload_DEFINED
#include <functional>
#include "GrTypes.h"
class GrTextureProxy;
/**
* GrDeferredUploadToken is used to sequence the uploads relative to each other and to draws.
*/
class GrDeferredUploadToken {
public:
static GrDeferredUploadToken AlreadyFlushedToken() { return GrDeferredUploadToken(0); }
GrDeferredUploadToken(const GrDeferredUploadToken&) = default;
GrDeferredUploadToken& operator=(const GrDeferredUploadToken&) = default;
bool operator==(const GrDeferredUploadToken& that) const {
return fSequenceNumber == that.fSequenceNumber;
}
bool operator!=(const GrDeferredUploadToken& that) const { return !(*this == that); }
bool inInterval(const GrDeferredUploadToken& start, const GrDeferredUploadToken& finish) {
return fSequenceNumber >= start.fSequenceNumber &&
fSequenceNumber <= finish.fSequenceNumber;
}
private:
GrDeferredUploadToken();
explicit GrDeferredUploadToken(uint64_t sequenceNumber) : fSequenceNumber(sequenceNumber) {}
friend class GrOpFlushState;
uint64_t fSequenceNumber;
};
/**
* Passed to a deferred upload when it is executed, this method allows the deferred upload to
* actually write its pixel data into a texture.
*/
using GrDeferredTextureUploadWritePixelsFn =
std::function<bool(GrTextureProxy*, int left, int top, int width, int height,
GrPixelConfig config, const void* buffer, size_t rowBytes)>;
/**
* A deferred texture upload is simply a std::function that takes a
* GrDeferredTextureUploadWritePixelsFn as a parameter. It is called when it should perform its
* upload as the draw/upload sequence is executed.
*/
using GrDeferredTextureUploadFn = std::function<void(GrDeferredTextureUploadWritePixelsFn&)>;
#endif
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