public void Update()
{
NvPStates states = new NvPStates();
states.Version = NVAPI.GPU_PSTATES_VER;
states.PStates = new NvPState[NVAPI.MAX_PSTATES_PER_GPU];
// Update GPU processor load
if (NVAPI.NvAPI_GPU_GetPStates != null && NVAPI.NvAPI_GPU_GetPStates(handle, ref states) == NvStatus.OK)
{
for (int i = 0; i < loads.Length; i++)
{
if (states.PStates[i].Present)
{
loads[i].Value = states.PStates[i].Percentage;
}
}
}
else
{
NvUsages usages = new NvUsages();
usages.Version = NVAPI.GPU_USAGES_VER;
usages.Usage = new uint[NVAPI.MAX_USAGES_PER_GPU];
if (NVAPI.NvAPI_GPU_GetUsages != null && NVAPI.NvAPI_GPU_GetUsages(handle, ref usages) == NvStatus.OK)
{
loads[0].Value = usages.Usage[2];
loads[1].Value = usages.Usage[6];
loads[2].Value = usages.Usage[10];
}
}
// Update GPU memory load
NvMemoryInfo memoryInfo = new NvMemoryInfo();
memoryInfo.Version = NVAPI.GPU_MEMORY_INFO_VER;
memoryInfo.Values = new uint[NVAPI.MAX_MEMORY_VALUES_PER_GPU];
if (NVAPI.NvAPI_GPU_GetMemoryInfo != null && displayHandle.HasValue && NVAPI.NvAPI_GPU_GetMemoryInfo(displayHandle.Value, ref memoryInfo) == NvStatus.OK)
{
uint totalMemory = memoryInfo.Values[0];
uint freeMemory = memoryInfo.Values[4];
float usedMemory = Math.Max(totalMemory - freeMemory, 0);
memoryLoad.Value = 100f * usedMemory / totalMemory;
}
}
private static string GetName(NvPhysicalGpuHandle handle)
{
return("NVIDIA" + ((NVAPI.NvAPI_GPU_GetFullName(handle, out string gpuName) == NvStatus.OK) ? gpuName.Trim() : ""));
}