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// d3d12-transient-heap.cpp
#include "d3d12-transient-heap.h"
#include "d3d12-buffer.h"
#include "d3d12-command-buffer.h"
#include "d3d12-device.h"
namespace gfx
{
namespace d3d12
{
using namespace Slang;
Result TransientResourceHeapImpl::synchronize()
{
WaitForMultipleObjects(
(DWORD)m_waitHandles.getCount(),
m_waitHandles.getArrayView().getBuffer(),
TRUE,
INFINITE);
m_waitHandles.clear();
return SLANG_OK;
}
Result TransientResourceHeapImpl::synchronizeAndReset()
{
synchronize();
m_currentViewHeapIndex = -1;
m_currentSamplerHeapIndex = -1;
allocateNewViewDescriptorHeap(m_device);
allocateNewSamplerDescriptorHeap(m_device);
m_stagingCpuSamplerHeap.freeAll();
m_stagingCpuViewHeap.freeAll();
m_commandListAllocId = 0;
SLANG_RETURN_ON_FAIL(m_commandAllocator->Reset());
Super::reset();
return SLANG_OK;
}
Result TransientResourceHeapImpl::finish()
{
for (auto& waitInfo : m_waitInfos)
{
if (waitInfo.waitValue == 0)
continue;
if (waitInfo.fence)
{
waitInfo.queue->Signal(waitInfo.fence, waitInfo.waitValue);
waitInfo.fence->SetEventOnCompletion(waitInfo.waitValue, waitInfo.fenceEvent);
m_waitHandles.add(waitInfo.fenceEvent);
}
}
return SLANG_OK;
}
TransientResourceHeapImpl::QueueWaitInfo& TransientResourceHeapImpl::getQueueWaitInfo(
uint32_t queueIndex)
{
if (queueIndex < (uint32_t)m_waitInfos.getCount())
{
return m_waitInfos[queueIndex];
}
auto oldCount = m_waitInfos.getCount();
m_waitInfos.setCount(queueIndex + 1);
for (auto i = oldCount; i < m_waitInfos.getCount(); i++)
{
m_waitInfos[i].waitValue = 0;
m_waitInfos[i].fenceEvent = CreateEventEx(nullptr, FALSE, 0, EVENT_ALL_ACCESS);
}
return m_waitInfos[queueIndex];
}
D3D12DescriptorHeap& TransientResourceHeapImpl::getCurrentViewHeap()
{
return m_viewHeaps[m_currentViewHeapIndex];
}
D3D12DescriptorHeap& TransientResourceHeapImpl::getCurrentSamplerHeap()
{
return m_samplerHeaps[m_currentSamplerHeapIndex];
}
Result TransientResourceHeapImpl::queryInterface(SlangUUID const& uuid, void** outObject)
{
if (uuid == GfxGUID::IID_ITransientResourceHeapD3D12)
{
*outObject = static_cast<ITransientResourceHeapD3D12*>(this);
addRef();
return SLANG_OK;
}
return Super::queryInterface(uuid, outObject);
}
Result TransientResourceHeapImpl::allocateTransientDescriptorTable(
DescriptorType type,
GfxCount count,
Offset& outDescriptorOffset,
void** outD3DDescriptorHeapHandle)
{
auto& heap =
(type == DescriptorType::ResourceView) ? getCurrentViewHeap() : getCurrentSamplerHeap();
int allocResult = heap.allocate((int)count);
if (allocResult == -1)
{
return SLANG_E_OUT_OF_MEMORY;
}
outDescriptorOffset = (Offset)allocResult;
*outD3DDescriptorHeapHandle = heap.getHeap();
return SLANG_OK;
}
TransientResourceHeapImpl::~TransientResourceHeapImpl()
{
synchronize();
for (auto& waitInfo : m_waitInfos)
CloseHandle(waitInfo.fenceEvent);
}
Result TransientResourceHeapImpl::init(
const ITransientResourceHeap::Desc& desc,
DeviceImpl* device,
uint32_t viewHeapSize,
uint32_t samplerHeapSize)
{
Super::init(desc, D3D12_CONSTANT_BUFFER_DATA_PLACEMENT_ALIGNMENT, device);
m_canResize = (desc.flags & ITransientResourceHeap::Flags::AllowResizing) != 0;
m_viewHeapSize = viewHeapSize;
m_samplerHeapSize = samplerHeapSize;
m_stagingCpuViewHeap.init(
device->m_device,
1000000,
D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV,
D3D12_DESCRIPTOR_HEAP_FLAG_NONE);
m_stagingCpuSamplerHeap.init(
device->m_device,
1000000,
D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER,
D3D12_DESCRIPTOR_HEAP_FLAG_NONE);
auto d3dDevice = device->m_device;
SLANG_RETURN_ON_FAIL(d3dDevice->CreateCommandAllocator(
D3D12_COMMAND_LIST_TYPE_DIRECT,
IID_PPV_ARGS(m_commandAllocator.writeRef())));
allocateNewViewDescriptorHeap(device);
allocateNewSamplerDescriptorHeap(device);
return SLANG_OK;
}
Result TransientResourceHeapImpl::allocateNewViewDescriptorHeap(DeviceImpl* device)
{
auto nextHeapIndex = m_currentViewHeapIndex + 1;
if (nextHeapIndex < m_viewHeaps.getCount())
{
m_viewHeaps[nextHeapIndex].deallocateAll();
m_currentViewHeapIndex = nextHeapIndex;
return SLANG_OK;
}
auto d3dDevice = device->m_device;
D3D12DescriptorHeap viewHeap;
SLANG_RETURN_ON_FAIL(viewHeap.init(
d3dDevice,
m_viewHeapSize,
D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV,
D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE));
m_currentViewHeapIndex = (int32_t)m_viewHeaps.getCount();
m_viewHeaps.add(_Move(viewHeap));
return SLANG_OK;
}
Result TransientResourceHeapImpl::allocateNewSamplerDescriptorHeap(DeviceImpl* device)
{
auto nextHeapIndex = m_currentSamplerHeapIndex + 1;
if (nextHeapIndex < m_samplerHeaps.getCount())
{
m_samplerHeaps[nextHeapIndex].deallocateAll();
m_currentSamplerHeapIndex = nextHeapIndex;
return SLANG_OK;
}
auto d3dDevice = device->m_device;
D3D12DescriptorHeap samplerHeap;
SLANG_RETURN_ON_FAIL(samplerHeap.init(
d3dDevice,
m_samplerHeapSize,
D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER,
D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE));
m_currentSamplerHeapIndex = (int32_t)m_samplerHeaps.getCount();
m_samplerHeaps.add(_Move(samplerHeap));
return SLANG_OK;
}
Result TransientResourceHeapImpl::createCommandBuffer(ICommandBuffer** outCmdBuffer)
{
if ((Index)m_commandListAllocId < m_commandBufferPool.getCount())
{
auto result =
static_cast<CommandBufferImpl*>(m_commandBufferPool[m_commandListAllocId].Ptr());
m_d3dCommandListPool[m_commandListAllocId]->Reset(m_commandAllocator, nullptr);
result->reinit();
++m_commandListAllocId;
returnComPtr(outCmdBuffer, result);
return SLANG_OK;
}
ComPtr<ID3D12GraphicsCommandList> cmdList;
SLANG_RETURN_ON_FAIL(m_device->m_device->CreateCommandList(
0,
D3D12_COMMAND_LIST_TYPE_DIRECT,
m_commandAllocator,
nullptr,
IID_PPV_ARGS(cmdList.writeRef())));
m_d3dCommandListPool.add(cmdList);
RefPtr<CommandBufferImpl> cmdBuffer = new CommandBufferImpl();
cmdBuffer->init(m_device, cmdList, this);
m_commandBufferPool.add(cmdBuffer);
++m_commandListAllocId;
returnComPtr(outCmdBuffer, cmdBuffer);
return SLANG_OK;
}
} // namespace d3d12
} // namespace gfx
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