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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
/// Declaration of Diligent::BufferD3D12Impl class
#include "EngineD3D12ImplTraits.hpp"
#include "BufferBase.hpp"
#include "BufferViewD3D12Impl.hpp" // Required by BufferBase
#include "D3D12ResourceBase.hpp"
#include "D3D12DynamicHeap.hpp"
#include "DescriptorHeap.hpp"
namespace Diligent
{
/// Buffer object implementation in Direct3D12 backend.
class BufferD3D12Impl final : public BufferBase<EngineD3D12ImplTraits>, public D3D12ResourceBase
{
public:
using TBufferBase = BufferBase<EngineD3D12ImplTraits>;
BufferD3D12Impl(IReferenceCounters* pRefCounters,
FixedBlockMemoryAllocator& BuffViewObjMemAllocator,
RenderDeviceD3D12Impl* pDeviceD3D12,
const BufferDesc& BuffDesc,
const BufferData* pBuffData = nullptr);
BufferD3D12Impl(IReferenceCounters* pRefCounters,
FixedBlockMemoryAllocator& BuffViewObjMemAllocator,
RenderDeviceD3D12Impl* pDeviceD3D12,
const BufferDesc& BuffDesc,
RESOURCE_STATE InitialState,
ID3D12Resource* pd3d12Buffer);
~BufferD3D12Impl();
IMPLEMENT_QUERY_INTERFACE_IN_PLACE(IID_BufferD3D12, TBufferBase)
#ifdef DILIGENT_DEVELOPMENT
void DvpVerifyDynamicAllocation(class DeviceContextD3D12Impl* pCtx) const;
#endif
/// Implementation of IBufferD3D12::GetD3D12Buffer().
virtual ID3D12Resource* DILIGENT_CALL_TYPE GetD3D12Buffer(Uint64& DataStartByteOffset, IDeviceContext* pContext) override final;
/// Implementation of IBuffer::GetNativeHandle().
virtual void* DILIGENT_CALL_TYPE GetNativeHandle() override final
{
VERIFY(GetD3D12Resource() != nullptr, "The buffer is dynamic and has no pointer to D3D12 resource");
Uint64 DataStartByteOffset = 0;
auto* pd3d12Buffer = GetD3D12Buffer(DataStartByteOffset, 0);
VERIFY(DataStartByteOffset == 0, "0 offset expected");
return pd3d12Buffer;
}
/// Implementation of IBufferD3D12::SetD3D12ResourceState().
virtual void DILIGENT_CALL_TYPE SetD3D12ResourceState(D3D12_RESOURCE_STATES state) override final;
/// Implementation of IBufferD3D12::GetD3D12ResourceState().
virtual D3D12_RESOURCE_STATES DILIGENT_CALL_TYPE GetD3D12ResourceState() const override final;
__forceinline D3D12_GPU_VIRTUAL_ADDRESS GetGPUAddress(Uint32 ContextId, class DeviceContextD3D12Impl* pCtx)
{
if (m_Desc.Usage == USAGE_DYNAMIC)
{
#ifdef DILIGENT_DEVELOPMENT
DvpVerifyDynamicAllocation(pCtx);
#endif
return m_DynamicData[ContextId].GPUAddress;
}
else
{
return GetD3D12Resource()->GetGPUVirtualAddress();
}
}
__forceinline D3D12_GPU_VIRTUAL_ADDRESS GetGPUAddress()
{
VERIFY_EXPR(m_Desc.Usage != USAGE_DYNAMIC);
return GetD3D12Resource()->GetGPUVirtualAddress();
}
D3D12_CPU_DESCRIPTOR_HANDLE GetCBVHandle() { return m_CBVDescriptorAllocation.GetCpuHandle(); }
private:
virtual void CreateViewInternal(const struct BufferViewDesc& ViewDesc, IBufferView** ppView, bool bIsDefaultView) override;
void CreateUAV(struct BufferViewDesc& UAVDesc, D3D12_CPU_DESCRIPTOR_HANDLE UAVDescriptor);
void CreateSRV(struct BufferViewDesc& SRVDesc, D3D12_CPU_DESCRIPTOR_HANDLE SRVDescriptor);
void CreateCBV(D3D12_CPU_DESCRIPTOR_HANDLE CBVDescriptor);
DescriptorHeapAllocation m_CBVDescriptorAllocation;
// Align the struct size to the cache line size to avoid false sharing
static constexpr size_t CacheLineSize = 64;
struct alignas(CacheLineSize) CtxDynamicData : D3D12DynamicAllocation
{
CtxDynamicData& operator=(const D3D12DynamicAllocation& Allocation)
{
*static_cast<D3D12DynamicAllocation*>(this) = Allocation;
return *this;
}
Uint8 Padding[CacheLineSize - sizeof(D3D12DynamicAllocation)];
};
static_assert(sizeof(CtxDynamicData) == CacheLineSize, "Unexpected sizeof(CtxDynamicData)");
friend class DeviceContextD3D12Impl;
// Array of dynamic allocations for every device context.
std::vector<CtxDynamicData, STDAllocatorRawMem<D3D12DynamicAllocation>> m_DynamicData;
};
} // namespace Diligent
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