Zhiyi Zhang (@zhiyi) commented about dlls/win32u/sysparams.c:
break;
}
preferred_mode->width = found_mode->dmPelsWidth;
preferred_mode->height = found_mode->dmPelsHeight;
display_freq = found_mode->dmDisplayFrequency;
signal_info->pixelRate = display_freq * preferred_mode->width * preferred_mode->height;
signal_info->hSyncFreq.Numerator = display_freq * preferred_mode->width;
signal_info->hSyncFreq.Denominator = 1;
signal_info->vSyncFreq.Numerator = display_freq;
signal_info->vSyncFreq.Denominator = 1;
signal_info->activeSize.cx = preferred_mode->width;
signal_info->activeSize.cy = preferred_mode->height;
signal_info->totalSize.cx = preferred_mode->width;
signal_info->totalSize.cy = preferred_mode->height;
signal_info->videoStandard = D3DKMDT_VSS_OTHER;
I don't know what's the value on Windows. But D3DKMDT_VSS_VESA_CVT seems more common than D3DKMDT_VSS_OTHER.