/*

 * Copyright 2019 Google LLC

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef GrWaitRenderTask_DEFINED

#define GrWaitRenderTask_DEFINED

#include "src/gpu/GrRenderTask.h"

#include "src/gpu/GrSemaphore.h"

class GrWaitRenderTask final : public GrRenderTask {

public:

    GrWaitRenderTask(GrSurfaceProxyView surfaceView,

                     std::unique_ptr<std::unique_ptr<GrSemaphore>[]> semaphores,

                     int numSemaphores)

            : GrRenderTask()

            , fSemaphores(std::move(semaphores))

            , fNumSemaphores(numSemaphores)

            , fWaitedOn(std::move(surfaceView)) {}

private:

    bool onIsUsed(GrSurfaceProxy* proxy) const override {

        return proxy == fWaitedOn.proxy();

    }

    void gatherProxyIntervals(GrResourceAllocator*) const override;

    ExpectedOutcome onMakeClosed(GrRecordingContext*, SkIRect*) override {

        return ExpectedOutcome::kTargetUnchanged;

    }

    bool onExecute(GrOpFlushState*) override;

#if GR_TEST_UTILS

    const char* name() const final { return "Wait"; }

#endif

#ifdef SK_DEBUG

    // No non-dst proxies.

    void visitProxies_debugOnly(const GrVisitProxyFunc&) const override {}

#endif

    std::unique_ptr<std::unique_ptr<GrSemaphore>[]> fSemaphores;

    int fNumSemaphores;

    // This field is separate from the main "targets" field on GrRenderTask because this task

    // does not actually write to the surface and so should not participate in the normal

    // lastRenderTask tracking that written-to targets do.

    GrSurfaceProxyView fWaitedOn;

};

#endif