RayeR wrote on 2022-01-16, 20:48:

Disruptor wrote on 2021-12-22, 17:53:

I've tested some Windows 3.1x drivers and modified them to enable true color in the highest resolutions.
The supported color depths are 256, 65536 and 16777216 in all resolutions.

Good job. Did you tested that the drivers are stable? Keropi wrote about load crash/freeze problems but it might be specific for his HW config only. Could you give dome mor info how did you add truecolor modes? I try to do so on Matrox Millennium II drivers where I did a registry hack under WinXP to enable 1600x1200/32bpp but I also would like to patch it for WNT4. Under Win3.x this mode works out of the box.

Well, it just was an addition to the .inf file.
Strange enough for some resolutions there already were incomplete sections in both files (for Riva 128 and TNT/TNT2).

I have added some other resolutions and colour depths for TNT and TNT2 in tnthd311.zip
Re: Windows 3.11 - nVidia TNT2 built-in GPU chip compatibility

1920x1080 up to 16M colours
960x720 up to 16M colours
640x400 up to 16M colours

1920x1200 up to 65536 colours
1800x1440 up to 65536 colours

All resolutions are displayed with 60 Hz. If you need another refresh rate, you may edit system.ini
Thanks to mkarcher for the great work!

I've noticed some minor font glitches in the first seconds of starting Windows' clock. Please test it at your own risk.
If the driver cannot set a resolution it will fall back to 640x480.

I repaired one TNT2 M64 PCI, so it would be quite powerfull VGA for my retro PCs. I could install W3.11 and try the drivers...