src/dawn/native/opengl/QueueGL.h

// Copyright 2018 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NATIVE_OPENGL_QUEUEGL_H_
#define SRC_DAWN_NATIVE_OPENGL_QUEUEGL_H_

#include <deque>
#include <utility>

#include "dawn/native/Queue.h"
#include "dawn/native/opengl/UtilsEGL.h"
#include "dawn/native/opengl/opengl_platform.h"

namespace dawn::native::opengl {

class Device;
class SharedFence;

class Queue final : public QueueBase {
  public:
    static ResultOrError<Ref<Queue>> Create(Device* device, const QueueDescriptor* descriptor);

    void OnGLUsed();
    MaybeError SubmitFenceSync();

    // Returns a shared fence which represents work done up to lastUsageSerial. It may be a cached
    // fence or newly created.
    ResultOrError<Ref<SharedFence>> GetOrCreateSharedFence(ExecutionSerial lastUsageSerial);

  private:
    Queue(Device* device, const QueueDescriptor* descriptor);

    MaybeError SubmitImpl(uint32_t commandCount, CommandBufferBase* const* commands) override;
    MaybeError WriteBufferImpl(BufferBase* buffer,
                               uint64_t bufferOffset,
                               const void* data,
                               size_t size) override;
    MaybeError WriteTextureImpl(const ImageCopyTexture& destination,
                                const void* data,
                                size_t dataSize,
                                const TextureDataLayout& dataLayout,
                                const Extent3D& writeSizePixel) override;

    ResultOrError<bool> WaitForQueueSerial(ExecutionSerial serial, Nanoseconds timeout) override;

    bool HasPendingCommands() const override;
    MaybeError SubmitPendingCommands() override;
    ResultOrError<ExecutionSerial> CheckAndUpdateCompletedSerials() override;
    void ForceEventualFlushOfCommands() override;
    MaybeError WaitForIdleForDestruction() override;

    uint32_t mEGLSyncType;
    MutexProtected<std::deque<std::pair<Ref<WrappedEGLSync>, ExecutionSerial>>> mFencesInFlight;

    // Has pending GL commands which are not associated with a fence.
    bool mHasPendingCommands = false;
};

}  // namespace dawn::native::opengl

#endif  // SRC_DAWN_NATIVE_OPENGL_QUEUEGL_H_