Search found 37 matches

by Serendipity
Thu Oct 04, 2012 8:42 am
Forum: General Development
Topic: XYZ Spectral curves?
Replies: 2
Views: 7933

Re: XYZ Spectral curves?

Yes, that´s what I was looking for. Thanks.
by Serendipity
Tue Oct 02, 2012 10:34 am
Forum: General Development
Topic: XYZ Spectral curves?
Replies: 2
Views: 7933

XYZ Spectral curves?

Hi, from what I know the CIE XYZ-spectral curves as used in pbrt are specified based on an E illuminant. Does anyone know where I can find these curves based on a D65 illuminant as used by sRGB? I would like to skip the extra chromatic adaption step if possible but I can´t find these curves anywhere...
by Serendipity
Fri Sep 07, 2012 2:49 pm
Forum: General Development
Topic: BDPT - important path ?
Replies: 18
Views: 9655

Re: BDPT - important path ?

Actually realtime feedback is essential for us, when using up to 100 clients or so network traffic and latencies are already a huge issue. Collecting the samples on the client side and sending them over the network would be an option, we just didn´t have time to try that out yet. But I guess it woul...
by Serendipity
Fri Sep 07, 2012 10:28 am
Forum: General Development
Topic: BDPT - important path ?
Replies: 18
Views: 9655

Re: BDPT - important path ?

I haven´t implemented that myself, but I would say yes to all 3 questions.

Atomics on a GPU may work ok, on a multithreaded system this is not much of a problem either, but on a cluster this sadly is a showstopper for BDPT, network is just too slow :(
by Serendipity
Fri Sep 07, 2012 9:59 am
Forum: General Development
Topic: BDPT - important path ?
Replies: 18
Views: 9655

Re: BDPT - important path ?

Ok, let me see if I understand that correctly: You don´t directly connect any points on the light path with the eye, right? Or to put it with Veach: You don´t create a light image, right? If so, you won´t get decent caustics and therefore loose quite some of the benefit of BDPT. Sadly these connecti...
by Serendipity
Mon Jun 04, 2012 10:06 am
Forum: General Development
Topic: Csillámtrace - my new graphics engine
Replies: 153
Views: 103533

Re: Csillámtrace - my new graphics engine

Geri wrote:20000 light without notable speed drop - done.
Sounds interesting. May I ask how you do that? How do you figure out which lights illuminate a pixel? I always had troubles getting glossy brdfs to work correctly when I tried this.
by Serendipity
Fri Jun 01, 2012 12:59 pm
Forum: General Development
Topic: Anti aliasing question, advices, councils...
Replies: 34
Views: 19461

Re: Anti aliasing question, advices, councils...

If you have a Nvidia-card installed just try it yourself, the 300.xx Release drivers allow you to enable FXAA in the driver. In my opinion it works quite decent unless you have very fine structures (fine text like on the symbols in a car is a worst case). And after all it´s nearly for free :)
by Serendipity
Thu May 31, 2012 1:35 pm
Forum: General Development
Topic: Anti aliasing question, advices, councils...
Replies: 34
Views: 19461

Re: Anti aliasing question, advices, councils...

You are probably right, might also be easier to find the hard edges in LDR.
by Serendipity
Thu May 31, 2012 1:09 pm
Forum: General Development
Topic: Anti aliasing question, advices, councils...
Replies: 34
Views: 19461

Re: Anti aliasing question, advices, councils...

Running an edge-detection and bluring extremly hard edges before applying the tonemapping is still a valid option in my opinion.
by Serendipity
Thu May 31, 2012 11:58 am
Forum: General Development
Topic: Anti aliasing question, advices, councils...
Replies: 34
Views: 19461

Re: Anti aliasing question, advices, councils...

@Serendipity: if DOF and motion blur are the issues, you can still process them in 2d (with some additional layers) after the rendering Of course you can (at least to some degree) but this requires the artist to know exactly what he is doing. I have seen so many bad motion blur examples that I am c...