// Copyright 2017 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
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// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef SRC_DAWN_NATIVE_D3D12_SWAPCHAIND3D12_H_
#define SRC_DAWN_NATIVE_D3D12_SWAPCHAIND3D12_H_

#include <vector>

#include "dawn/native/d3d/SwapChainD3D.h"

#include "dawn/native/IntegerTypes.h"
#include "dawn/native/d3d12/d3d12_platform.h"

namespace dawn::native::d3d12 {

class Device;
class Texture;

class SwapChain final : public d3d::SwapChain {
  public:
    static ResultOrError<Ref<SwapChain>> Create(Device* device,
                                                Surface* surface,
                                                SwapChainBase* previousSwapChain,
                                                const SurfaceConfiguration* config);

  private:
    using Base = d3d::SwapChain;
    using Base::Base;
    ~SwapChain() override;

    // SwapChainBase implementation
    MaybeError PresentImpl() override;
    ResultOrError<SwapChainTextureInfo> GetCurrentTextureImpl() override;
    void DetachFromSurfaceImpl() override;

    // d3d::SwapChain implementation
    IUnknown* GetD3DDeviceForCreatingSwapChain() override;
    void ReuseBuffers(SwapChainBase* previousSwapChain) override;
    // Does the swapchain initialization step of gathering the buffers.
    MaybeError CollectSwapChainBuffers() override;
    // Calls DetachFromSurface but also synchronously waits until all references to the
    // swapchain and buffers are removed, as that's a constraint for some DXGI operations.
    MaybeError DetachAndWaitForDeallocation() override;

    std::vector<ComPtr<ID3D12Resource>> mBuffers;
    std::vector<ExecutionSerial> mBufferLastUsedSerials;
    uint32_t mCurrentBuffer = 0;

    Ref<Texture> mApiTexture;
};

}  // namespace dawn::native::d3d12

#endif  // SRC_DAWN_NATIVE_D3D12_SWAPCHAIND3D12_H_