private static Adapter CreateAdapter(UniqueComPtr <IDXGIAdapter1> dxgiAdapter)
{
var p = dxgiAdapter.Ptr;
DXGI_ADAPTER_DESC1 desc;
Guard.ThrowIfFailed(p->GetDesc1(&desc));
LARGE_INTEGER driverVersion;
Guid iid = IID_IDXGIDevice;
Guard.ThrowIfFailed(dxgiAdapter.Ptr->CheckInterfaceSupport(&iid, &driverVersion));
var descText = new string((char *)desc.Description);
return(new Adapter(
dxgiAdapter.AsIUnknown(),
descText,
(AdapterVendor)desc.VendorId,
desc.DeviceId,
desc.SubSysId,
desc.Revision,
desc.DedicatedVideoMemory,
desc.DedicatedSystemMemory,
desc.SharedSystemMemory,
desc.AdapterLuid,
(ulong)driverVersion.QuadPart,
(desc.Flags & (int)DXGI_ADAPTER_FLAG.DXGI_ADAPTER_FLAG_SOFTWARE) != 0,
DeviceType.GraphicsAndCompute // DXGI doesn't support enumerating non-graphics adapters
));
}
private static Adapter CreateAdapter(UniqueComPtr <IDXCoreAdapter> adapter)
{
nuint size;
Guard.ThrowIfFailed(adapter.Ptr->GetPropertySize(DXCoreAdapterProperty.DriverDescription, &size));
// we do this because we don't want to overrwrite the mem of the buff
// this just truncates if necessary
// but buffer may return >requested size, so we use the size we requested for
var realSize = (int)size;
using var buff = RentedArray <byte> .Create(realSize);
fixed(byte *pBuff = buff.Value)
{
Guard.ThrowIfFailed(adapter.Ptr->GetProperty(DXCoreAdapterProperty.DriverDescription, (uint)realSize, pBuff));
}
GetProperty <DXCoreHardwareID>(DXCoreAdapterProperty.HardwareID, out var vendor);
GetProperty <LUID>(DXCoreAdapterProperty.InstanceLuid, out var luid);
GetProperty <bool>(DXCoreAdapterProperty.IsHardware, out var isHardware);
GetProperty <ulong>(DXCoreAdapterProperty.DedicatedAdapterMemory, out var dedicatedVideoMemory);
GetProperty <ulong>(DXCoreAdapterProperty.DedicatedSystemMemory, out var dedicatedSystemMemory);
GetProperty <ulong>(DXCoreAdapterProperty.SharedSystemMemory, out var sharedSystemMemory);
GetProperty <ulong>(DXCoreAdapterProperty.DriverVersion, out var driverVersion);
DeviceType type;
Guid graphics = DXCORE_ADAPTER_ATTRIBUTE_D3D12_GRAPHICS;
Guid compute = DXCORE_ADAPTER_ATTRIBUTE_D3D12_CORE_COMPUTE;
if (adapter.Ptr->IsAttributeSupported(&graphics))
{
type = DeviceType.GraphicsAndCompute;
}
else if (adapter.Ptr->IsAttributeSupported(&compute))
{
type = DeviceType.ComputeOnly;
}
else
{
ThrowHelper.ThrowPlatformNotSupportedException("Adapter does not support DXCore compute or D3D12 graphics");
type = default;
}
return(new Adapter(
adapter.AsIUnknown().Move(),
Encoding.UTF8.GetString(buff.Value),
(AdapterVendor)vendor.vendorID,
vendor.deviceID,
vendor.subSysID,
vendor.revision,
dedicatedVideoMemory,
dedicatedSystemMemory,
sharedSystemMemory,
luid,
driverVersion,
isSoftware: !isHardware,
type
));
void GetProperty <T>(DXCoreAdapterProperty property, out T val) where T : unmanaged
{
if (!adapter.Ptr->IsPropertySupported(property))
{
val = default;
LogHelper.LogInformation($"DXCoreProperty '{property}' not supported by adapter");
}
T data;
Guard.ThrowIfFailed(adapter.Ptr->GetProperty(property, (uint)sizeof(T), &data));
val = data;
}
}
