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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
#include <atomic>
#include "BasicTypes.h"
#include "ReferenceCounters.h"
#include "RefCntAutoPtr.hpp"
#include "DeviceContextBase.hpp"
#include "RefCntAutoPtr.hpp"
namespace Diligent
{
/// Base implementation of the device context for next-generation backends.
template <typename EngineImplTraits>
class DeviceContextNextGenBase : public DeviceContextBase<EngineImplTraits>
{
public:
using TBase = DeviceContextBase<EngineImplTraits>;
using DeviceImplType = typename EngineImplTraits::RenderDeviceImplType;
using ICommandQueueType = typename EngineImplTraits::CommandQueueInterface;
DeviceContextNextGenBase(IReferenceCounters* pRefCounters,
DeviceImplType* pRenderDevice,
Uint32 ContextId,
Uint32 CommandQueueId,
Uint32 NumCommandsToFlush,
bool bIsDeferred) :
// clang-format off
TBase{pRefCounters, pRenderDevice, bIsDeferred},
m_ContextId {ContextId },
m_CommandQueueId {CommandQueueId },
m_NumCommandsToFlush {NumCommandsToFlush},
m_SubmittedBuffersCmdQueueMask{bIsDeferred ? 0 : Uint64{1} << Uint64{CommandQueueId}}
// clang-format on
{
}
~DeviceContextNextGenBase()
{
}
virtual ICommandQueueType* DILIGENT_CALL_TYPE LockCommandQueue() override final
{
if (this->m_bIsDeferred)
{
LOG_WARNING_MESSAGE("Deferred contexts have no associated command queues");
return nullptr;
}
return this->m_pDevice->LockCommandQueue(m_CommandQueueId);
}
virtual void DILIGENT_CALL_TYPE UnlockCommandQueue() override final
{
if (this->m_bIsDeferred)
{
LOG_WARNING_MESSAGE("Deferred contexts have no associated command queues");
return;
}
this->m_pDevice->UnlockCommandQueue(m_CommandQueueId);
}
Uint32 GetCommandQueueId() const
{
return m_CommandQueueId;
}
protected:
// Should be called at the end of FinishFrame()
void EndFrame()
{
if (this->m_bIsDeferred)
{
// For deferred context, reset submitted cmd queue mask
m_SubmittedBuffersCmdQueueMask.store(0);
}
else
{
this->m_pDevice->FlushStaleResources(m_CommandQueueId);
}
TBase::EndFrame();
}
const Uint32 m_ContextId;
const Uint32 m_CommandQueueId;
const Uint32 m_NumCommandsToFlush;
// This mask indicates which command queues command buffers from this context were submitted to.
// For immediate context, this will always be 1 << m_CommandQueueId.
// For deferred contexts, this will accumulate bits of the queues to which command buffers
// were submitted to before FinishFrame() was called. This mask is used to release resources
// allocated by the context during the frame when FinishFrame() is called.
std::atomic_uint64_t m_SubmittedBuffersCmdQueueMask{0};
};
} // namespace Diligent
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