alt.hn

3/23/2026 at 10:37:15 PM

IRIX 3dfx Voodoo driver and glide2x IRIX port

https://sdz-mods.com/index.php/2026/03/23/irix-3dfx-voodoo-driver-glide2x-irix-port/

by zdw

3/24/2026 at 6:00:55 AM

I was an intern at SGI in the summer of 1998, when we shipped the latest minor version of IRIX, 6.5. I worked on a test suite for IRIX's pthreads implementation, and got to ship a teeny, tiny bit of real code that fixed a real-time hold-off in pthread_mutex_t. (IRIX is a hard RTOS, you see.) As things happened, the dot-dot releases of that minor version would be the last releases of IRIX to roll off the software assembly lines before SGI put it in maintenance mode for these last darn-near-30-years.

In 2000, I was the 20th-or-so full-time engineer at VMware, where I worked for 9 years. Then was at Facebook from 2009 to 2016, where I worked on the search backend (now replaced), HHVM (which still runs the Big Blue Application, a shrinking portion of the Meta Empire), and started FAIR in 2015 (which finally seems to have turned around the "open" sign with Yann's departure).

In 2016 I started at Slack as Chief Architect, where I mostly did not write a ton of code. I worked on a job queue scheduler which I would not be surprised to find has been replaced. And after that I was mostly encouraging/advising people doing Real Work.

All of which is to say, it is quite possible that the last code I've worked on professionally that is out there running on customer machines ... is that libpthread mutex bug fix from when I was barely old enough to drink.

by kmavm

3/24/2026 at 9:30:57 AM

I was a young systems programmer in this decade, which were some of the most virulent of my life, and I had a lot of projects on Irix, particularly in Mountain View, necessitating my weekly flight from Burbank to San Jose for 3 days on site, porting and hacking and generally having a great ol' Irix time .. and oh, how I loved my trips into the SGI parts of town, the Birds of a Feather meetings discussing Irix vs. Linux (and SunOS and *BSD, oh no!), the flight simulator facility on the SGI campus where I would regularly get trounced by Air cadets in a matter of seconds .. the beautiful buildings that looked like they belonged under my desk or atop the Indy I had at home .. the confident air of the SGI engineers at lunch in the Oracle campus, the crazy ports of naughty things to naughty hardware (Netscape Navigator on Nintendo 64, oh my, how naughty you were, SGI!)

If only SGI had not made that Microsoft deal, had a bit more respect for their hardware engineers, and instead actually built a laptop to compete with Apples famed tiBook. Its one of my favourite alternative-universe daydreams .. what if the tiBook was an SGI tiBook, running Irix out of the gate .. would we have quite the Big Fruity Company dilemma we suffer today? What would an SGI iPhone have looked like?

Off to play some Tranquility and calm myself down a bit.

by aa-jv

3/24/2026 at 4:58:03 AM

Now I am curious, how does the voodoo 1 compare with the native o2 gfx?

The o2 used a unified memory scheme so it's graphics were never as fast as it's big brother the octane's impact graphics but because of the unified memory it was a texture power house in comparison, close to a GB of texture memory in 1996 is mind blowing, in comparison the ocatane's impact graphics had 4 mb of texture memory and if you payed out the big bucks for a max impact with double the memory(which was the size of a large motherboard)... you still only got 4mb because the extra memory was basicly sli. and a graphics board that had the reputation of desoldering it's own memory off.

by somat

3/24/2026 at 6:07:17 AM

Klipsch was famous for making speakers using acoustic horns, which was somewhat esoteric. When they finally made a speaker which used a conventional woofer, they named it “the heresy”.

A 3dfx card running in an O2 surely deserves a similar moniker :)

by cellularmitosis

3/24/2026 at 4:34:46 AM

Very nice. I guess the final boss would be to port Quake 1 with glide to support this.

by HerbManic

3/24/2026 at 5:02:59 AM

A nice joke but... this is an sgi, they pretty much invented accelerated graphics. Original glquake used minigl which was GL cut down and neutered to fit within the glide api, these guys invented and their systems could run the full GL. There actually was a very nice accelerated port of Quake on the demo disks included with the system.

by somat

3/24/2026 at 8:50:09 AM

It's already done as Quake it's libre source and if the GLIDE headers for SGI match the ones of the 3DFX ones from the Linux implementation it would be just a matter of path setting and a few ifdefs.

by anthk

3/24/2026 at 9:27:52 AM

As someone with a room full of SGI equipment which already runs Quake (and Doom, and Mektar and Tranquility), I can only say: this port to Voodoo on Irix needs to be done. ;)

by aa-jv

3/24/2026 at 11:08:10 AM

Just pick any VooDoo supported source port (old enough, from gcc 3.4 days) it might compile as is with very few changes.

EDIT: all of them use MiniGL, damn....

by anthk