Search found 220 matches

by jbikker
Sun Dec 04, 2011 4:24 pm
Forum: Scratchpad
Topic: Portalcat
Replies: 5
Views: 8945

Portalcat

Image
by jbikker
Thu Dec 01, 2011 7:23 pm
Forum: Visuals, Tools, Demos & Sources
Topic: Brigade footage
Replies: 13
Views: 12086

Re: Brigade footage

Some more eye candy. :) AZz9zNgDxlM We're still trying to find optimal settings for the light, so it's quite noisy at 16spp. Still, the lighting is awesome in those scenes, imho. ;) EDIT: I have uploaded the XVid version, since Youtube did a horrible job at converting that video. Here it is: http://...
by jbikker
Thu Dec 01, 2011 1:46 pm
Forum: Visuals, Tools, Demos & Sources
Topic: Brigade footage
Replies: 13
Views: 12086

Re: Brigade footage

Novak ideas are indeed from Jan Novak's paper on path regeneration. Frame rate: it's kinda useless; path tracer performance could be expressed in samples per second I guess, but pure fps is not worth much, since I can always double 'performance' by halving the number of samples per pixel (which incr...
by jbikker
Wed Nov 30, 2011 12:53 pm
Forum: ompf2
Topic: Warrick
Replies: 2
Views: 7225

Warrick

Apparently, there exists some software that is able to recursively fetch webpages from Google cache, as well as other sources, and combinations of sources if copies are partial. The software is called Warrick: http://frankmccown.blogspot.com/2011/08/warricks-status.html Unfortunately, Warrick is cur...
by jbikker
Wed Nov 30, 2011 9:08 am
Forum: Visuals, Tools, Demos & Sources
Topic: Regarding comparing GLSL Pathtracer with a CUDA Pathtracer
Replies: 9
Views: 9174

Re: Regarding comparing GLSL Pathtracer with a CUDA Pathtrac

I am not sure if I posted the sources before, but you can get them here: http://igad.nhtv.nl/~bikker/files/kajiya.zip All coordinates are in there. That version also does the elipsoids properly, and is very similar to Kajiya's original scene. You may also want to look around for a demo that I did fo...
by jbikker
Tue Nov 29, 2011 6:12 pm
Forum: General Development
Topic: MIS question
Replies: 16
Views: 11456

Re: MIS question

Actually it helped greatly even in that indoor scene. Without MIS, I would get quick convergence, but lots of fireflies. With the reference path tracer (see the other thread) I would get slow convergence, but a pleasant, soft noise. MIS gets me both, basically. Quite satisfying. And the math isn't c...
by jbikker
Tue Nov 29, 2011 6:02 pm
Forum: Visuals, Tools, Demos & Sources
Topic: Regarding comparing GLSL Pathtracer with a CUDA Pathtracer
Replies: 9
Views: 9174

Re: Regarding comparing GLSL Pathtracer with a CUDA Pathtrac

I did something similar for the Kajiya demo, in CUDA. It's not using an acceleration structure (apart from a few bounding boxes, but since they are nested, that doesn't qualify as a bounding volume hierarchy ;) ). Video is here: OHWxsUUataw Actually that's still the old scene, without elipsoids. O w...
by jbikker
Tue Nov 29, 2011 5:56 pm
Forum: ompf2
Topic: Welcome!
Replies: 32
Views: 35940

Re: Welcome!

Turns out there is something called an ATOM feed integrated with phpBB. Is this useful / can it replace RSS? I'm a noob. ;) I have enabled it now, let me know if this does the job for you.
by jbikker
Tue Nov 29, 2011 7:48 am
Forum: General Development
Topic: MIS question
Replies: 16
Views: 11456

MIS question

I finally got my head around multiple importance sampling, and added it to Brigade. I used the implementation of PBRT for reference. Basic idea is: 1. MIS is used to sample direct illumination (however, also after 1 or more bounces); 2. MIS is used to weigh direct lighting computed by 2 distinct met...
by jbikker
Mon Nov 28, 2011 8:21 am
Forum: ompf2
Topic: Welcome!
Replies: 32
Views: 35940

Welcome!

Hello, and welcome to 'ompf.net'! As you may have noticed, ompf.org has been down for about a week now. This domain is maintained by 'tbp', who is also the founder of the ompf forum. Sadly, tbp can't be reached at the moment. For this reason, we have setup a temporary forum. Everything is empty, und...