Search found 46 matches
- Thu Oct 11, 2012 5:55 pm
- Forum: Links & Papers
- Topic: Vertex merging paper and SmallVCM
- Replies: 33
- Views: 30865
Re: Vertex merging paper and SmallVCM
It's just my opinion, but I think this is the most important advance in ray tracing in the last decade. Congratulations! And thanks for sharing.
- Tue Oct 02, 2012 9:54 pm
- Forum: Visuals, Tools, Demos & Sources
- Topic: Parallella: A Supercomputer For Everyone
- Replies: 5
- Views: 5898
Re: Parallella: A Supercomputer For Everyone
From an EETimes article: The 16-core version would deliver 26 GFLOPs, and the 64-core version could provide 90 GFLOPs—a significant leap over alternative boards such as Raspberry Pi. That would put the 64 core version roughly equivalent to an Ivy Bridge Core i7. Porting programs to the Intel chip is...
- Mon Aug 20, 2012 5:49 pm
- Forum: General Development
- Topic: Anybody thinks seriously about diffraction in RT/PT?
- Replies: 7
- Views: 7225
Re: Anybody thinks seriously about diffraction in RT/PT?
Guys, what you would say about implementing edge diffraction in path tracer? Useless crap? ;) http://mail.phys.ncku.edu.tw/optics/technical/commerical/tracepro/others/edge-diffraction-1999.pdf From this paper, it appears that at least the folks at Lambda Research have thought seriously about implem...
- Thu Jun 07, 2012 2:35 pm
- Forum: General Development
- Topic: Why I cannot get the specular reflection right with mesh?
- Replies: 7
- Views: 6963
Re: Why I cannot get the specular reflection right with mesh
It looks as if the problem is that you are not correctly interpolating the surface normal. Look at a triangle in the debugger and make sure that the surface normals at the three vertices are different. (With the orientation of triangles in your picture, two of the three should be identical and the o...
- Wed Jun 06, 2012 5:39 pm
- Forum: Links & Papers
- Topic: Manifold Exploration: A Markov Chain Monte Carlo technique
- Replies: 5
- Views: 6865
Re: Manifold Exploration: A Markov Chain Monte Carlo techniq
@igneus: Extended technical report? Are you referring to something other than the ACM ToG preprint? If so, where is it?
- Thu Apr 05, 2012 2:35 pm
- Forum: General Development
- Topic: ABg BSDF?
- Replies: 13
- Views: 18505
Re: ABg BSDF?
Stover's book is not cheap ($70 US), but it is available here http://www.amazon.com/Optical-Scattering-Measurement-Analysis-Monograph/dp/0819477761/ref=tmm_pap_title_0 and here http://spie.org/x648.html?product_id=834142 . I just found that it's also available as an ebook for $60 US here http://www....
- Tue Apr 03, 2012 6:50 pm
- Forum: General Development
- Topic: ABg BSDF?
- Replies: 13
- Views: 18505
Re: ABg BSDF?
That's the reason I ask. In microfacet BRDF models, the normal distriibution function should be normalized to retur the full reflected light when integrated and a lot of the popular distribution function do. But the masking and shadowing was introduced by Torrance & Sparrow because the distribution...
- Mon Apr 02, 2012 5:22 pm
- Forum: General Development
- Topic: ABg BSDF?
- Replies: 13
- Views: 18505
Re: ABg BSDF?
I'm getting more and more interested in the ABC BSDF model. What is the transition angle? Also, Is the ABC a full BSDF model or only a distribution density function that needs an additional masking/shadowing factor and a Fresnel factor? The transition angle is defined in the paper by Pfisterer link...
- Mon Apr 02, 2012 5:02 pm
- Forum: General Development
- Topic: ABg BSDF?
- Replies: 13
- Views: 18505
Re: ABg BSDF?
@ypoissant: Nice article! I had not seen that one before. If you want background on the ABC BSDF, look for papers by Palasantzas. An earlier one in Physical Review B is "Roughness spectrum and surface width of self-affine fractal surfaces via the K-correlation model" I can't remember if I found it o...
- Tue Mar 27, 2012 8:15 pm
- Forum: General Development
- Topic: ABg BSDF?
- Replies: 13
- Views: 18505
Re: ABg BSDF?
Hi, does anyone know where I could find some informations about the ABg BSDF Model? I remember a discussion back on the old ompf but since that site is down I can´t find it anymore. Thanks What kind of information are you looking for? Pfisterer's article gives the equation and some guidelines for t...