src/dawn/native/metal/SwapChainMTL.h

// Copyright 2017 The Dawn & Tint Authors
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#ifndef SRC_DAWN_NATIVE_METAL_SWAPCHAINMTL_H_
#define SRC_DAWN_NATIVE_METAL_SWAPCHAINMTL_H_

#include "dawn/native/SwapChain.h"

#include "dawn/common/NSRef.h"

@class CAMetalLayer;
@protocol CAMetalDrawable;

namespace dawn::native::metal {

class Device;
class Texture;

class SwapChain final : public SwapChainBase {
  public:
    static ResultOrError<Ref<SwapChain>> Create(Device* device,
                                                Surface* surface,
                                                SwapChainBase* previousSwapChain,
                                                const SurfaceConfiguration* config);

    SwapChain(DeviceBase* device, Surface* surface, const SurfaceConfiguration* config);
    ~SwapChain() override;

  private:
    void DestroyImpl() override;

    using SwapChainBase::SwapChainBase;
    MaybeError Initialize(SwapChainBase* previousSwapChain);

    NSRef<CAMetalLayer> mLayer;

    NSPRef<id<CAMetalDrawable>> mCurrentDrawable;
    Ref<Texture> mTexture;

    MaybeError PresentImpl() override;
    ResultOrError<SwapChainTextureInfo> GetCurrentTextureImpl() override;
    void DetachFromSurfaceImpl() override;
};

}  // namespace dawn::native::metal

#endif  // SRC_DAWN_NATIVE_METAL_SWAPCHAINMTL_H_