Huh, I never knew a VooDoom existed. Gotta try that some time.

Had a peek at the source code for the last version that got a DOS release, 1.41, just now. The DOS version won't even look for a -3dfx switch at all, the only place that does is win32\win_vid.c. And then, looking at the Glide renderer implementation, I see that it's currently tied to the Windows API, albeit only loosely, so if you insist on sticking with DOS then there's a bit of porting work to be done.

edit:
> According to the documentation even the dos version should support 3dfx glide

Where does it say this? All the passages I could find mention it in the context of Windows, or do not specify any OS at all.

Hiho - i downloaded several dos versions, and some of the dos versions included a html based docu not only but with command line switches. One of them is the -3dfx switch. So i assumed it was capable of glide under dos.

Apparently this is wong, sadly...
I failed to get the windows version running on win98 with glide, they named the dll r_glide_unstable.dll - and that name is well deserved 😁.

I would really like to see a dos version of this with glide. Just because it would be a cool thing to use it under real dos with my voodoo 2. Nostalgia you know 😁

I guess you cant fiddle around with the sourcecode and make that happen?

If you aren't going to use the features that a voodoo card is for then not much point. If you are then someone would need to put in the effort to code a port for dos with those features.

@ DosFreak - i dont get your point 😀. If i wouldnt want to use the voodoo 3d acceleration i wouldnt ask for a sourceport which could use it. There are games like Descent 1 / 2 with 3dfx capabilities, be it official or cummunity driven. So glide works for dos games under real dos. I assumed doom legacy would offer glide support under dos because i want to use the card under dos. I could use a windows port but then i can directly go for something with opengl and more advanced stuff - but i want to stay close to the dos feeling while utilizing the voodo2 under dos.

What @DosFreak means is that, if a Glide implementation for DOS doesn't yet exist, and you somehow were able to port the Windows Glide version of the Doom port to run in DOS (depending how "loosely" tied it is to Windows, as @elszgensa mentions), you may or may not have to port any existing FX_ functions used (3Dfx's feature set - bilinear filtering, fog table, z-buffer depth, rasterization ...) to be compatible with the DOS library (glide2x.ovl), assuming there are some differences.

Otherwise, you would be running the Glide implementation, but it would look exactly the same non-Glide, if the features are not implemented for DOS correctly.
The giveaway is the inclusion of an r_glide.dll, which indicates this is specifically for win32 only.

UPDATE: I did some more digging, and found an archive of old Doom Legacy releases, going as far back as version 1.24 (August 1998).
It contains release history on when the 3Dfx Glide support was first introduced in version 1.28 (April 1999):

- 3DFX BETA VERSION - you can choose between software or 3Dfx accelerated mode in the Doom Legacy Launcher 'Setup' p […]
Show full quote

- 3DFX BETA VERSION
- you can choose between software or 3Dfx accelerated mode
in the Doom Legacy Launcher 'Setup' panel, without the
launcher, use "-3dfx" on the command-line
- 3Dfx mode is available through the r_glide.dll, you need
the latest Glide 3 drivers from www.3dfx.com
- uses external r_glide.dll file : this WILL be a feature,
because it allows for future extensions with OpenGL,
Direct3D, or even hi-color software modes

Without looking, based on the text above, the r_glide.dll seems to be their own fork of GLIDE3X.DLL, Glide v3 being win32 only.

elszgensa wrote on 2024-02-19, 21:53:

Huh, I never knew a VooDoom existed. Gotta try that some time. […]
Show full quote

Huh, I never knew a VooDoom existed. Gotta try that some time.

Had a peek at the source code for the last version that got a DOS release, 1.41, just now. The DOS version won't even look for a -3dfx switch at all, the only place that does is win32\win_vid.c. And then, looking at the Glide renderer implementation, I see that it's currently tied to the Windows API, albeit only loosely, so if you insist on sticking with DOS then there's a bit of porting work to be done.

edit:
> According to the documentation even the dos version should support 3dfx glide

Where does it say this? All the passages I could find mention it in the context of Windows, or do not specify any OS at all.

Can you please post a link about this VooDoom port?

There is no 'voodoom'. This is merely a play on words to refer to Doom Legacy.