src/gpu/ganesh/GrBufferTransferRenderTask.h

/*
 * Copyright 2022 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrBufferTransferRenderTask_DEFINED
#define GrBufferTransferRenderTask_DEFINED

#include "include/core/SkRefCnt.h"
#include "include/private/base/SkDebug.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/gpu/ganesh/GrRenderTask.h"

#include <cstddef>

class GrGpuBuffer;
class GrOpFlushState;
class GrRecordingContext;
class GrResourceAllocator;
class GrSurfaceProxy;
struct SkIRect;

class GrBufferTransferRenderTask final : public GrRenderTask {
public:
    static sk_sp<GrRenderTask> Make(sk_sp<GrGpuBuffer> src,
                                    size_t srcOffset,
                                    sk_sp<GrGpuBuffer> dst,
                                    size_t dstOffset,
                                    size_t size);

    ~GrBufferTransferRenderTask() override;

private:
    GrBufferTransferRenderTask(sk_sp<GrGpuBuffer> src,
                               size_t srcOffset,
                               sk_sp<GrGpuBuffer> dst,
                               size_t dstOffset,
                               size_t size);

    bool onIsUsed(GrSurfaceProxy* proxy) const override { return false; }
    void gatherProxyIntervals(GrResourceAllocator*) const override {} // no proxies
    ExpectedOutcome onMakeClosed(GrRecordingContext*, SkIRect* targetUpdateBounds) override {
        return ExpectedOutcome::kTargetUnchanged;  // no target
    }
    bool onExecute(GrOpFlushState*) override;

#if defined(GPU_TEST_UTILS)
    const char* name() const final { return "BufferTransfer"; }
#endif
#ifdef SK_DEBUG
    void visitProxies_debugOnly(const GrVisitProxyFunc&) const override {}
#endif

    sk_sp<GrGpuBuffer> fSrc;
    sk_sp<GrGpuBuffer> fDst;

    size_t fSrcOffset;
    size_t fDstOffset;
    size_t fSize;
};

#endif