Search found 6 matches
- Sun Mar 24, 2019 6:34 am
- Forum: General Development
- Topic: Shading normal issues w. adjoint bsdf
- Replies: 7
- Views: 3731
Re: Shading normal issues w. adjoint bsdf
Haha, I was the one that filed the issue. In my implementation I keep the correction term since I do not like the idea of turning a consistent method into an inconsistent one. If I recall correctly, Jakob said that (in Mitsuba renderer) a better importance sampling technique is needed for the term. ...
- Wed Jul 18, 2018 10:59 am
- Forum: General Development
- Topic: Anyone read Laurent Belcour's paper on layered material?
- Replies: 2
- Views: 4382
Re: Anyone read Laurent Belcour's paper on layered material?
After thinking for a while, I think you are right. Partially filling the FGD table with FGD_inf is actually a good point, and I think the author meant that way. I am planning on implement this technique too. We can discuss about the details if there is any problem during implementation.
- Tue Jul 17, 2018 9:04 am
- Forum: General Development
- Topic: Anyone read Laurent Belcour's paper on layered material?
- Replies: 2
- Views: 4382
Anyone read Laurent Belcour's paper on layered material?
Laurent Belcour's recent paper on layered material looks amazing, here is the link https://belcour.github.io/blog/research/2018/05/05/brdf-realtime-layered.html . But I have got many questions regarding some formulae listed in the paper, especially equation 32 & 33. I think they are both missing the...
- Wed Jan 11, 2017 3:57 pm
- Forum: General Development
- Topic: PBRT-v3 (the book) wrong microfacet BTDF?
- Replies: 3
- Views: 5681
Re: PBRT-v3 (the book) wrong microfacet BTDF?
Thanks for your suggestion! But I'm not sure if it is okay to multi-post on several places since I already have posted a GitHub issue on PBRT-v3's repository. Actually I'm more confused than before after digging into this problem further. It looks like non of PBRT-v3, LuxRender, Mitsuba, Tungsten ar...
- Tue Jan 10, 2017 11:19 am
- Forum: General Development
- Topic: PBRT-v3 (the book) wrong microfacet BTDF?
- Replies: 3
- Views: 5681
PBRT-v3 (the book) wrong microfacet BTDF?
Recently I'm implementing path tracing with next event estimation and encounters a nasty bug: refracted radiance is higher than my path traced reference. Then I discovered that the paper by Walter et al. (Microfacet Models for Refraction through Rough Surfaces) writes the microfacet BTDF formula wit...
- Thu Jan 05, 2017 5:58 pm
- Forum: Visuals, Tools, Demos & Sources
- Topic: Glitch Pictures anyone?
- Replies: 81
- Views: 122616
Re: Glitch Pictures anyone?
After a bad refactor of my simple path tracer
