The NvAPI documentation states:
There are currently 4 domains for which GPU utilization and dynamic P-State thresholds can be retrieved: graphic engine (GPU), frame buffer (FB), video engine (VID), and bus interface (BUS). Each domain's info is indexed in the array. For example: pDynamicPstatesInfo->utilization[NVAPI_GPU_UTILIZATION_DOMAIN_GPU] holds the info for the GPU domain.
But there are no definitions for NVAPI_GPU_UTILIZATION_DOMAIN_GPU or any other manifest constants, so it is not obvious which values are being returned by NvAPI_GPU_GetDynamicPstatesInfoEx.
Can somebody please document this?