SwapChainWebGPUImpl.hpp

/*
 *  Copyright 2023-2024 Diligent Graphics LLC
 *
 *  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
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *  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,
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 */

#pragma once

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

#include <memory>

#include "SwapChainBase.hpp"
#include "SwapChainWebGPU.h"
#include "EngineWebGPUImplTraits.hpp"
#include "WebGPUObjectWrappers.hpp"

namespace Diligent
{

/// Swap chain implementation in WebGPU backend.
class SwapChainWebGPUImpl final : public SwapChainBase<ISwapChainWebGPU>
{
public:
    using TSwapChainBase = SwapChainBase;

    SwapChainWebGPUImpl(IReferenceCounters*      pRefCounters,
                        const SwapChainDesc&     SCDesc,
                        RenderDeviceWebGPUImpl*  pDevice,
                        DeviceContextWebGPUImpl* pDeviceContext,
                        const NativeWindow&      Window);

    ~SwapChainWebGPUImpl();

    IMPLEMENT_QUERY_INTERFACE_IN_PLACE(IID_SwapChainWebGPU, TSwapChainBase)

    /// Implementation of ISwapChain::Present() in Direct3D11 backend.
    void DILIGENT_CALL_TYPE Present(Uint32 SyncInterval) override final;

    /// Implementation of ISwapChain::Resize() in Direct3D11 backend.
    void DILIGENT_CALL_TYPE Resize(Uint32 NewWidth, Uint32 NewHeight, SURFACE_TRANSFORM NewPreTransform) override final;

    /// Implementation of ISwapChain::SetFullscreenMode() in WebGPU backend.
    void DILIGENT_CALL_TYPE SetFullscreenMode(const DisplayModeAttribs& DisplayMode) override final;

    /// Implementation of ISwapChain::SetWindowedMode() in WebGPU backend.
    void DILIGENT_CALL_TYPE SetWindowedMode() override final;

    /// Implementation of ISwapChainWebGPU::GetCurrentBackBufferRTV() in WebGPU backend.
    ITextureViewWebGPU* DILIGENT_CALL_TYPE GetCurrentBackBufferRTV() override final { return m_pBackBufferRTV; }

    /// Implementation of ISwapChainWebGPU::GetDepthBufferDSV() in WebGPU backend.
    ITextureViewWebGPU* DILIGENT_CALL_TYPE GetDepthBufferDSV() override final { return m_pDepthBufferDSV; }

    /// Implementation of ISwapChainWebGPU::GetWebGPUSurface() in WebGPU backend.
    WGPUSurface DILIGENT_CALL_TYPE GetWebGPUSurface() override final { return m_wgpuSurface.Get(); }

private:
    void CreateSurface();

    void ConfigureSurface();

    void CreateDepthBufferView();

    void RecreateSwapChain();

    void ReleaseSwapChainResources();

    void RequestAnimationFrame(Uint32 SyncInterval);

    WGPUSurfaceGetCurrentTextureStatus AcquireSurfaceTexture();

private:
    NativeWindow                      m_NativeWindow;
    WebGPUSurfaceWrapper              m_wgpuSurface;
    RefCntAutoPtr<ITextureViewWebGPU> m_pBackBufferRTV;
    RefCntAutoPtr<ITextureViewWebGPU> m_pDepthBufferDSV;
    bool                              m_VSyncEnabled          = false;
    Uint32                            m_RequestedSyncInterval = 0;
};

} // namespace Diligent