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/*
* Copyright 2019-2021 Diligent Graphics LLC
* 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
*
* 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,
* 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
/// Implementation of the Diligent::SwapChainBase template class
#include "RenderDevice.h"
#include "DeviceContext.h"
#include "SwapChain.h"
#include "ObjectBase.hpp"
#include "Errors.hpp"
#include "RefCntAutoPtr.hpp"
namespace Diligent
{
/// Base implementation of the swap chain.
/// \tparam BaseInterface - Base interface that this class will inheret
/// (Diligent::ISwapChainGL, Diligent::ISwapChainD3D11,
/// Diligent::ISwapChainD3D12 or Diligent::ISwapChainVk).
/// \remarks Swap chain holds the strong reference to the device and a weak reference to the
/// immediate context.
template <class BaseInterface>
class SwapChainBase : public ObjectBase<BaseInterface>
{
public:
using TObjectBase = ObjectBase<BaseInterface>;
/// \param pRefCounters - Reference counters object that controls the lifetime of this swap chain.
/// \param pDevice - Pointer to the device.
/// \param pDeviceContext - Pointer to the device context.
/// \param SCDesc - Swap chain description
SwapChainBase(IReferenceCounters* pRefCounters,
IRenderDevice* pDevice,
IDeviceContext* pDeviceContext,
const SwapChainDesc& SCDesc) :
// clang-format off
TObjectBase {pRefCounters },
m_pRenderDevice {pDevice },
m_wpDeviceContext {pDeviceContext },
m_SwapChainDesc {SCDesc },
m_DesiredPreTransform{SCDesc.PreTransform}
// clang-format on
{
}
// clang-format off
SwapChainBase (const SwapChainBase&) = delete;
SwapChainBase ( SwapChainBase&&) = delete;
SwapChainBase& operator = (const SwapChainBase&) = delete;
SwapChainBase& operator = ( SwapChainBase&&) = delete;
// clang-format on
~SwapChainBase()
{
}
IMPLEMENT_QUERY_INTERFACE_IN_PLACE(IID_SwapChain, TObjectBase)
/// Implementation of ISwapChain::GetDesc()
virtual const SwapChainDesc& DILIGENT_CALL_TYPE GetDesc() const override final
{
return m_SwapChainDesc;
}
virtual void DILIGENT_CALL_TYPE SetMaximumFrameLatency(Uint32 MaxLatency) override
{}
protected:
bool Resize(Uint32 NewWidth, Uint32 NewHeight, SURFACE_TRANSFORM NewPreTransform, Int32 Dummy = 0 /*To be different from virtual function*/)
{
if (NewWidth != 0 && NewHeight != 0 &&
(m_SwapChainDesc.Width != NewWidth ||
m_SwapChainDesc.Height != NewHeight ||
m_DesiredPreTransform != NewPreTransform))
{
m_SwapChainDesc.Width = NewWidth;
m_SwapChainDesc.Height = NewHeight;
m_DesiredPreTransform = NewPreTransform;
LOG_INFO_MESSAGE("Resizing the swap chain to ", m_SwapChainDesc.Width, "x", m_SwapChainDesc.Height);
return true;
}
return false;
}
/// Strong reference to the render device
RefCntAutoPtr<IRenderDevice> m_pRenderDevice;
/// Weak references to the immediate device context. The context holds
/// the strong reference to the swap chain.
RefCntWeakPtr<IDeviceContext> m_wpDeviceContext;
/// Swap chain description
SwapChainDesc m_SwapChainDesc;
/// Desired surface pre-transformation.
SURFACE_TRANSFORM m_DesiredPreTransform = SURFACE_TRANSFORM_OPTIMAL;
};
} // namespace Diligent
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