Search found 25 matches

by patrickawalz
Tue Dec 11, 2018 3:23 am
Forum: General Discussion
Topic: When is principled shader coming out?
Replies: 28
Views: 1851

Re: When is principled shader coming out?

the Disney material doesn't account for a lot of effects that can be present in a scene, for instance multiple scattering or irridescents. admittedly we don't account for the latter yet ourselves, but I'm hoping one of the open source papers released last year will be implemented as part of the new ...
by patrickawalz
Thu Dec 06, 2018 3:38 pm
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 58
Views: 3389

Re: Direct Light cache: how to avoid splotches?

while not a production renderer and more just a hobby project, psychopath renderer by cessen has an implementation of a light tree. this was also the first renderer I saw implement an open source version of a light tree to aid in direct light sampling. he did a blog post or 2 about it on psychopath....
by patrickawalz
Thu Nov 22, 2018 8:25 pm
Forum: Development
Topic: LuxCore v2.1 proposed features
Replies: 70
Views: 8473

Re: LuxCore v2.1 proposed features

ill try to get something out to you guys this weekend. it's Thanksgiving here in the us, so I'll do my best to squeeze it in
by patrickawalz
Thu Nov 22, 2018 4:00 pm
Forum: Development
Topic: LuxCore v2.1 proposed features
Replies: 70
Views: 8473

Re: LuxCore v2.1 proposed features

I wrote a c# white balance program several years ago for a friend that worked pretty flawlessly for her needs. I don't currently have a lux dev environment setup, but I could hack together a c++ version of an image pipeline in a text editor if someone wants to handle the opencl port when I'm done an...
by patrickawalz
Sun Nov 11, 2018 8:08 pm
Forum: General Discussion
Topic: CGI tech news box
Replies: 74
Views: 16459

Re: CGI tech news box

"A Simple and Robust Mutation Strategy for the Metropolis Light Transport Algorithm" http://sirkan.iit.bme.hu/~szirmay/paper50_electronic.pdf looks like it could be a simple way to increase the performance with little overhead. im pretty sure this idea the kelemen mlt paper. a variation of this is ...
by patrickawalz
Fri Nov 02, 2018 12:37 pm
Forum: General Discussion
Topic: streamlining luxcore workflow
Replies: 20
Views: 1145

Re: streamlining luxcore workflow

luxcore uses opencl, and as Dade has said, there is no plan to implement the ai denier from nvidia any time soon. just my thoughts though: when Dade first started slg( which turned into luxcore) his idea was a brute force gpu monte carlo renderer. it didn't include a denoiser because the idea was to...
by patrickawalz
Sat Oct 13, 2018 12:48 pm
Forum: General Discussion
Topic: CGI tech news box
Replies: 74
Views: 16459

Re: CGI tech news box

Another engine getting multiple scattering GGX is IFX Clarisse v4 "... it doesn't affect render time..." :o (click on image to go to YouTube video) https://i.imgur.com/LUnzpPO.jpg I'm fairly certain this is using the multiple scattering ggx paper that we will be implementing at some point in the ve...
by patrickawalz
Sat Sep 22, 2018 3:38 am
Forum: User Support
Topic: Luxcore renders light through glass very slowly
Replies: 7
Views: 560

Re: Luxcore renders light through glass very slowly

sds paths are notoriously hard to render, and metropolis light transport is a very timed algorithm for this very situation.
by patrickawalz
Sat Aug 25, 2018 3:36 pm
Forum: General Discussion
Topic: CGI tech news box
Replies: 74
Views: 16459

Re: CGI tech news box

B.Y.O.B. wrote:
Sat Aug 25, 2018 1:27 pm
Sorry if this is old news, it's from 2013:
Watertight Ray/Triangle Intersection
pbrt-v3 actually uses this in its triangle mesh intersection code, if you wanted to take a look at some code already using this