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// d3d12-buffer.cpp
#include "d3d12-buffer.h"
namespace gfx
{
namespace d3d12
{
using namespace Slang;
BufferResourceImpl::BufferResourceImpl(const Desc& desc)
: Parent(desc), m_defaultState(D3DUtil::getResourceState(desc.defaultState))
{
}
BufferResourceImpl::~BufferResourceImpl()
{
if (sharedHandle.handleValue != 0)
{
CloseHandle((HANDLE)sharedHandle.handleValue);
}
}
DeviceAddress BufferResourceImpl::getDeviceAddress()
{
return (DeviceAddress)m_resource.getResource()->GetGPUVirtualAddress();
}
Result BufferResourceImpl::getNativeResourceHandle(InteropHandle* outHandle)
{
outHandle->handleValue = (uint64_t)m_resource.getResource();
outHandle->api = InteropHandleAPI::D3D12;
return SLANG_OK;
}
Result BufferResourceImpl::getSharedHandle(InteropHandle* outHandle)
{
#if !SLANG_WINDOWS_FAMILY
return SLANG_E_NOT_IMPLEMENTED;
#else
// Check if a shared handle already exists for this resource.
if (sharedHandle.handleValue != 0)
{
*outHandle = sharedHandle;
return SLANG_OK;
}
// If a shared handle doesn't exist, create one and store it.
ComPtr<ID3D12Device> pDevice;
auto pResource = m_resource.getResource();
pResource->GetDevice(IID_PPV_ARGS(pDevice.writeRef()));
SLANG_RETURN_ON_FAIL(pDevice->CreateSharedHandle(
pResource,
NULL,
GENERIC_ALL,
nullptr,
(HANDLE*)&outHandle->handleValue));
outHandle->api = InteropHandleAPI::D3D12;
sharedHandle = *outHandle;
return SLANG_OK;
#endif
}
Result BufferResourceImpl::map(MemoryRange* rangeToRead, void** outPointer)
{
D3D12_RANGE range = {};
if (rangeToRead)
{
range.Begin = (SIZE_T)rangeToRead->offset;
range.End = (SIZE_T)(rangeToRead->offset + rangeToRead->size);
}
SLANG_RETURN_ON_FAIL(
m_resource.getResource()->Map(0, rangeToRead ? &range : nullptr, outPointer));
return SLANG_OK;
}
Result BufferResourceImpl::unmap(MemoryRange* writtenRange)
{
D3D12_RANGE range = {};
if (writtenRange)
{
range.Begin = (SIZE_T)writtenRange->offset;
range.End = (SIZE_T)(writtenRange->offset + writtenRange->size);
}
m_resource.getResource()->Unmap(0, writtenRange ? &range : nullptr);
return SLANG_OK;
}
Result BufferResourceImpl::setDebugName(const char* name)
{
Parent::setDebugName(name);
m_resource.setDebugName(name);
return SLANG_OK;
}
} // namespace d3d12
} // namespace gfx
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