private bool queryAdapterInfo(Interop._KMTQUERYADAPTERINFOTYPE requestType, IntPtr dataBuf, int dataSize)
{
var queryStruct = new Interop._D3DKMT_QUERYADAPTERINFO()
{
hAdapter = AdapterInfo.hAdapter,
Type = requestType,
pPrivateDriverData = dataBuf,
PrivateDriverDataSize = (uint)dataSize
};
var queryResult = Interop.NtStatus.STATUS_SUCCESS;
try
{
queryResult = Interop.Gdi.D3DKMTQueryAdapterInfo(ref queryStruct);
}
catch (Exception ex)
{
_logger?.LogError(ex, $"failed to query adapterInfo, hAdapter={AdapterInfo.hAdapter}, requestType={requestType}");
}
if (queryResult != Interop.NtStatus.STATUS_SUCCESS)
{
_logger?.LogWarning($"failed to get adapterInfo, hAdapter=0x{AdapterInfo.hAdapter:X8}, requestType={requestType}, result={queryResult}");
}
return(queryResult == Interop.NtStatus.STATUS_SUCCESS);
}
private T queryAdapterInfo <T>(Interop._KMTQUERYADAPTERINFOTYPE requestType) where T : struct
{
int dataSize = 4;
if (!typeof(T).IsEnum)
{
dataSize = Marshal.SizeOf <T>();
}
var dataBuf = Marshal.AllocHGlobal(dataSize);
try
{
if (queryAdapterInfo(requestType, dataBuf, dataSize))
{
return((T)InteropHelper.PointerToObj(typeof(T), dataBuf));
}
}
finally
{
Marshal.FreeHGlobal(dataBuf);
}
return(new T());
}
private void queryAdapterInfo <T>(Interop._KMTQUERYADAPTERINFOTYPE requestType, ref T requestStruct) where T : struct
{
var bufferPtr = InteropHelper.ObjToPointer(requestStruct);
if (queryAdapterInfo(requestType, bufferPtr, Marshal.SizeOf <T>()))
{
requestStruct = InteropHelper.PointerToObj <T>(bufferPtr);
Marshal.FreeHGlobal(bufferPtr);
}
}
