Serious graphical bugs with Voodoo family cards in Martian Gothic: Unification.

[TheLostNinja]

The problems with a video begins already in the FMV intro playback (blinking frames; unfortunately, Bandicam failed to capture the glitchy FMVs properly), but the most of graphics artifacts is concetrated in the 3D containing scenes (see the video by the link below from 1:14).

To Reproduce The best way to see the main bug rightaway is to skip the intros with Esc button and go to the game itself directly.

Video It's much better to observe this bug dynamically rather than statically, so here is the video instead of screenshot: https://mega.nz/file/9YsCWZwS#xofvXkaqqImiAfe13OX5dNopc_uOF9aJWbaXQFuBH4s

Emulator configuration

• Machine: it was tested on the Award SiS 496/497, FIC VA-503+ and Gigabyte GA-686BX.
• CPU: few Pentium 1/2 CPUs in a frequencies range between 63 and 233 MHz.
• Graphics/sound cards: video cards from Voodoo2 to Voodoo3 3000, sound card was SoundBlaster AWE32 or Ensoniq AudioPCI (ES1371).
• Installed OS: Windows 98.
• Render driver of PCem is software.

Host machine

• OS: Windows 10 version 22H2
• Emulator version: artifact build e1e3475bd482e3350a2ec442a0a9fda8ba5cff06

Additional context The Voodoo realisation in alternative forks like (86/PC)Box shows an absolutely same bug.

[eddmanx]

The lines glitch issue is known and happens when voodoo render threads is set to 4.

https://pcem-emulator.co.uk/phpBB3/viewtopic.php?p=15816#p15816 https://pcem-emulator.co.uk/phpBB3/viewtopic.php?p=15817#p15817

As for the FMVs, if the issue is something besides lines, it's probably not thread count related. Test the game with thread count set to 2 and 1, and also test the Virge DX; The latter would probably fail to play the game, but might be able to play the initial videos.

Bandicam should be able to record FMV sections. Try the Screen recording mode, instead of Game recording, or vice versa. If you're using an older version, try the latest one; or use OBS.

Any reason for using the Software render driver?

[TheLostNinja]

Test the game with thread count set to 2 and 1, and also test the Virge DX; The latter would probably fail to play the game, but might be able to play the initial videos.

Thank you! With only 2 thread even Voodoo3 3000, as it turned out to be, can display the game graphics properly.