/*     Copyright 2015-2019 Egor Yusov
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
 *
 *  In no event and under no legal theory, whether in tort (including negligence), 
 *  contract, or otherwise, unless required by applicable law (such as deliberate 
 *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
 *  liable for any damages, including any direct, indirect, special, incidental, 
 *  or consequential damages of any character arising as a result of this License or 
 *  out of the use or inability to use the software (including but not limited to damages 
 *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 
 *  all other commercial damages or losses), even if such Contributor has been advised 
 *  of the possibility of such damages.
 */

#pragma once

/// \file
/// Declaration of Diligent::SwapChainVkImpl class

#include "SwapChainVk.h"
#include "SwapChainBase.h"
#include "VulkanUtilities/VulkanInstance.h"
#include "VulkanUtilities/VulkanObjectWrappers.h"

namespace Diligent
{

class ITextureViewVk;
class IMemoryAllocator;
/// Implementation of the Diligent::ISwapChainVk interface
class SwapChainVkImpl final : public SwapChainBase<ISwapChainVk>
{
public:
    using TSwapChainBase = SwapChainBase<ISwapChainVk>;

    SwapChainVkImpl(IReferenceCounters*        pRefCounters,
                    const SwapChainDesc&       SwapChainDesc, 
                    class RenderDeviceVkImpl*  pRenderDeviceVk,
                    class DeviceContextVkImpl* pDeviceContextVk,
                    void*                      pNativeWndHandle);
    ~SwapChainVkImpl();

    virtual void QueryInterface( const Diligent::INTERFACE_ID& IID, IObject** ppInterface )override final;

    virtual void Present(Uint32 SyncInterval)override final;
    virtual void Resize( Uint32 NewWidth, Uint32 NewHeight )override final;

    virtual void SetFullscreenMode(const DisplayModeAttribs &DisplayMode)override final;

    virtual void SetWindowedMode()override final;

    virtual VkSwapchainKHR GetVkSwapChain()override final{ return m_VkSwapChain; }

    virtual ITextureViewVk* GetCurrentBackBufferRTV()override final
    {
        VERIFY_EXPR(m_BackBufferIndex >= 0 && m_BackBufferIndex < m_SwapChainDesc.BufferCount);
        return m_pBackBufferRTV[m_BackBufferIndex];
    }

    virtual ITextureViewVk* GetDepthBufferDSV()override final{return m_pDepthBufferDSV;}

private:
    void CreateVulkanSwapChain();
    void InitBuffersAndViews();
    VkResult AcquireNextImage(DeviceContextVkImpl* pDeviceCtxVk);
    void RecreateVulkanSwapchain(DeviceContextVkImpl* pImmediateCtxVk);

    std::shared_ptr<const VulkanUtilities::VulkanInstance> m_VulkanInstance;
    VkSurfaceKHR   m_VkSurface     = VK_NULL_HANDLE;
    VkSwapchainKHR m_VkSwapChain   = VK_NULL_HANDLE;
    VkFormat       m_VkColorFormat = VK_FORMAT_UNDEFINED;

    std::vector<VulkanUtilities::SemaphoreWrapper> m_ImageAcquiredSemaphores;
    std::vector<VulkanUtilities::SemaphoreWrapper> m_DrawCompleteSemaphores;
    std::vector< RefCntAutoPtr<ITextureViewVk>, STDAllocatorRawMem<RefCntAutoPtr<ITextureViewVk>> > m_pBackBufferRTV;
    std::vector<bool, STDAllocatorRawMem<bool> > m_SwapChainImagesInitialized;

    RefCntAutoPtr<ITextureViewVk> m_pDepthBufferDSV;
    Uint32 m_SemaphoreIndex = 0;
    uint32_t m_BackBufferIndex = 0;
    bool m_IsMinimized = false;
};

}
