Search found 34 matches

by patrickawalz
Thu Jan 09, 2020 12:22 am
Forum: Development
Topic: Triplanar mapping / stochastic texturing
Replies: 122
Views: 2412

Re: Triplanar mapping / stochastic texturing

The author of the technique byob shared is the same developer who wrote the tangent space normal mapping standard we use in lux. He has actually posted a new method that is state of the art. It also allows mixing of bump and normal maps, and to my knowledge doesn't require uvs. He also provides sour...
by patrickawalz
Wed Oct 30, 2019 3:15 am
Forum: General Discussion
Topic: CGI tech news box
Replies: 207
Views: 58541

Re: CGI tech news box

Surface Gradient Based Bump Mapping Framework


Since better bump mapping is planned as an upcoming feature, this might actually be a useful read...
by patrickawalz
Sun Jun 23, 2019 2:25 pm
Forum: General Discussion
Topic: CGI tech news box
Replies: 207
Views: 58541

Re: CGI tech news box

Thanks for the insight. What do you think about this earlier post on the topic? https://forums.luxcorerender.org/viewtopic.php?f=9&t=119&p=1969#p1969 It sounds like they are doing some version of dynamic epsilon along the same lines as to what we have already been doing since machineepsilon was int...
by patrickawalz
Sun Jun 23, 2019 12:55 am
Forum: General Discussion
Topic: CGI tech news box
Replies: 207
Views: 58541

Re: CGI tech news box

They do mention that this breaks reciprocity of light tho so this may be better to enable as an optional fix Does this mean it breaks the "bidirectional" nature of a BxDF? Also, does this only apply to bump mapped surfaces or does it also work on any other surface? Because we have a general problem...
by patrickawalz
Sat Jun 22, 2019 4:23 pm
Forum: General Discussion
Topic: CGI tech news box
Replies: 207
Views: 58541

Re: CGI tech news box

This seems really easy to implement. They provide a listing of their code and describe how to add it into their renderer(using it as a lighting term multiplier). Im sure the dev's will get to this soon to at least give it a go. They do mention that this breaks reciprocity of light tho so this may be...
by patrickawalz
Thu Jun 06, 2019 2:28 pm
Forum: General Discussion
Topic: Dealing with trolls...
Replies: 5
Views: 910

Re: Dealing with trolls...

Dade wrote:
Thu Jun 06, 2019 2:26 pm
Erased a post for trolling and spamming, next time is a ban.
Thanks Dade
by patrickawalz
Thu Jun 06, 2019 2:12 pm
Forum: General Discussion
Topic: Dealing with trolls...
Replies: 5
Views: 910

Re: Dealing with trolls...

madcat117 wrote:
Thu Jun 06, 2019 1:39 pm
Hey troll fix the broken network render for windows while your at it thanks, sincerely your worst nightmare! :twisted:
exactly what im talking about - this user has been nothing but a toxic addition to this forum - 14-15 posts that are either plain rude or goading developers...
by patrickawalz
Thu Jun 06, 2019 12:41 pm
Forum: General Discussion
Topic: Dealing with trolls...
Replies: 5
Views: 910

Dealing with trolls...

I've noticed more than a few less than professional posts from some new people on the forums as of late; rude comments about rushing features, and taunting when corrected. It feels like an attempt at trolling. Do we have an official forum code of conduct users area expected to follow, and what actio...
by patrickawalz
Thu May 30, 2019 11:17 pm
Forum: Development
Topic: Disney BRDF material
Replies: 101
Views: 9616

Re: Disney BRDF material

In a paper published recently "http://jcgt.org/published/0008/01/03/" they cite an imageworks paper in which they discuss improvements they made to the principled (disney) shader to include better energy conservation, and analytical multiple scattering micro- facets. It's a pretty good read and cove...
by patrickawalz
Tue Dec 11, 2018 3:23 am
Forum: General Discussion
Topic: When is principled shader coming out?
Replies: 28
Views: 5908

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 ...