Raytracing ioquake3
Stephan Reiter wrote into the mailing list with this amazing news (both videos are embedded after the break):
Hi everyone!
I’ve been working on a raytracing library during the last few months. Last week I was able to integrate it into the ioquake3 source code. This allows for switching between traditional rasterization and raytracing using a cvar. There are also some debug modes specific to the raytracing-mode.
I’ve posted two videos at YouTube showing Elite Force Raytraced, which is based on Thilo Schulz’s excellent Elite Force patch for ioquake3.
The 1st video focuses on raytraced reflections and other changes of the look: http://youtube.com/watch?v=jLFrP0c7VWw
The 2nd video is basically a record of a bot deathmatch: http://youtube.com/watch?v=C_6Icf2m_C4I intend to release this code soon, but I plan to take some more time to polish it some more.
Comments are appreciated.Keep up the good work, ioquake3-community!
Thanks,
Stephan
- Update: Stephen added some screenshots:

March 4th, 2008 at 11:16 am
I’ve uploaded a series of screenshots to my picasa album. Take a look at them here: http://picasaweb.google.de/stephan.reiter/EliteForceRaytraced
March 4th, 2008 at 12:15 pm
Hey, can we get some video of Urban Terror? What kind of FPS can you get at 320×200? That’s the resolution I used to play Quake at!!!
Awesome project! Can’t wait to see this real time on one of my machines!
March 5th, 2008 at 6:47 am
Cool beans. What I would love to see Stephan is some comparison shots. E.g. Standard EF on left and raytraced EF on the right.
Khalsa
March 5th, 2008 at 1:02 pm
Check these out, Khalsa: http://picasaweb.google.de/stephan.reiter/EliteForceComparisonShots
March 8th, 2008 at 10:29 am
Can I make some questions?
1 – There is no reflection//refraction in the movies, but there is reflection in pictures, what is your framerate at 320×240 with reflection enabled?
2 – What about shadows?
Keep up the good work. I hope someone do the same to q2.
March 10th, 2008 at 9:21 am
hey stephan,
you wrote that you are working on your own raytracing lib. have you ever suggested to use openrt (www.openrt.de)?
greetz
March 15th, 2008 at 9:04 pm
Any news on the code release?
March 18th, 2008 at 2:06 pm
awesome! cant wait to test it!
March 21st, 2008 at 12:31 pm
Hardware companies suck! They sell us poo-in-a-box for $500+! Don’t believe me? Then look here: http://graphics.cs.uni-sb.de/SaarCOR/
@leGeorge
OpenRT is slow beyond comparison to what Stephan has done!
As an example of requirements look here: http://graphics.cs.uni-sb.de/~sidapohl/egoshooter/
March 30th, 2008 at 5:56 am
I still want to play Urban Terror with this engine and at super low res to keep my frame rates up. Any word on when we can try it out ourselves? Thanks in advance!
April 8th, 2008 at 8:01 am
When will you release this code? I can’t wait to watch it in action on our own hardware and play around with it our selfs!
April 8th, 2008 at 10:18 am
http://ioquake3.org/files/rtpatch1270.zip
April 11th, 2008 at 4:11 am
Have some Problems to compile it -.-
Can you upload an compiled Version of it in the best way on Windows but Linux is ok too thank you very much
April 12th, 2008 at 11:38 am
I’m not sure what to do with a .diff. I assume that is some high level programming knowledge or something. Any chance I can just get a win32 binary? I’ll be on my best behavior!!!
April 15th, 2008 at 8:48 am
Would it be possible to port this to Tremulous? Namely a recent revision such as 1064?
May 13th, 2008 at 5:56 am
Hey, LLVM dev here.
Just a note about optimization: There’s no reason to use both GVN and GCSE. GVN is both faster and generally better. For pass ordering, I’d suggest mirroring what is done in the opt tool for -std-compile-opts.
June 14th, 2008 at 4:06 am
New screenshots with correct lighting and improved reflections are available here: http://picasaweb.google.com/stephan.reiter/EliteForceRaytraced20