Search found 49 matches

by koiava
Tue Mar 10, 2020 8:48 am
Forum: Visuals, Tools, Demos & Sources
Topic: My little path tracer
Replies: 32
Views: 18796

Re: My little path tracer

That looks gorgeous. I'm wondering what would be a memory requirements of those additional data for more or less realistic production scene.
Did you also implemented sample weighting described in that paper?
by koiava
Thu Feb 20, 2020 11:39 am
Forum: General Development
Topic: Path tracing in games
Replies: 26
Views: 23668

Re: Path tracing in games

https://www.youtube.com/watch?v=oktNku6gFkM Here is my path traced table pool game: https://www.shadertoy.com/view/MttfW It's pure path tracing with NEE and MIS. Uses simple material(lambert+microfacet with fresnel), simple shapes(spheres, cone, rectangle), single rectangular light and thin lens ca...
by koiava
Mon Mar 26, 2018 11:51 am
Forum: General Development
Topic: DXR
Replies: 6
Views: 6352

Re: DXR

Hello world!! It is really interesting Demo. I liked that a lot! I know that it's running on super expensive hardware, not suited for average gamer but still very interesting. As I guess main reason why it uses Volta GPUs is denoising. also seams like it has separate networks for shadow/glossy refle...
by koiava
Tue Feb 06, 2018 11:21 am
Forum: Visuals, Tools, Demos & Sources
Topic: My little path tracer
Replies: 32
Views: 18796

Re: My little path tracer

Really good results :)
by koiava
Wed Nov 02, 2016 8:11 am
Forum: General Development
Topic: Question about microfacet reverse pdf and SmallVCM
Replies: 2
Views: 8756

Re: Question about microfacet reverse pdf and SmallVCM

As I understand the way you calculate microfacet pdf stays the same, you just call pdf function for light subpath where wi and wo are swapped. Inverse pdf calculation should be same as you do in bdpt so you can take pbrt as reference. https://github.com/mmp/pbrt-v3/blob/master/src/integrators/bdpt.c...
by koiava
Fri Jul 01, 2016 9:21 am
Forum: Visuals, Tools, Demos & Sources
Topic: Direct Light Integration using MIS
Replies: 11
Views: 15377

Re: Direct Light Integration using MIS

ah, Thanks :D :)
by koiava
Fri Jul 01, 2016 8:54 am
Forum: Visuals, Tools, Demos & Sources
Topic: Direct Light Integration using MIS
Replies: 11
Views: 15377

Re: Direct Light Integration using MIS

https://lh3.googleusercontent.com/GsHQCGCekDLtU9fKVdhft98SI_qsvPBtNTGnIwn3a8Ocn5vtZhK08NlQvCqq5mHo-3Hnk969gaq8MrLXCqK8oxedZAkkufGMYrPr-PUoIJ6wncRnwlwiRNLgRAfEB6WdkHWKOOl-VtDruvWc-pM3UJT82hiXxm_7er0hi4yZfqWB17ShhC6XSqmHXsYxpwWGX_FX-EaerRCjq048rnxRLtmgvHWp2LIXaEznTnqiHILPDFQiGQj5_AqxGwGn2tWdlHsB6ihAL...
by koiava
Mon Jun 13, 2016 1:39 pm
Forum: Visuals, Tools, Demos & Sources
Topic: GPU VCM
Replies: 30
Views: 31649

Re: GPU VCM

Great results as always :) Thing which is strange for me in "vcm gpu" video is that photons are very noticeable. Directly visible photons correspond to CD.*L path which should have much lower MIS weight then BPT paths. Am I right? Also in last two videos "BDPT with directional regularization" and "d...
by koiava
Thu Feb 25, 2016 1:19 pm
Forum: General Development
Topic: Sweep of a solid angle
Replies: 2
Views: 3859

Re: Sweep of a solid angle

You can directly calculate solid angle of spherical rectangle without triangulation.
https://www.solidangle.com/research/egs ... tangle.pdf