Search found 1162 matches

by Dade
Thu Dec 06, 2018 10:51 am
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

I have tried the latest version of the DLSC code with the Marcatore's scene: carpet1.jpg The new code seems to handle well the carpet and other surfaces. There is something with the transparent curtain at the end of the room, direct light only rendering shows well the problem: carpet2.jpg I haven't ...
by Dade
Thu Dec 06, 2018 9:53 am
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

I mean according your explanation here user will not have to worry about such kind of scenario : hard to reach light or big scene (view) small scene (view). This fix/improvement is more about the "normal angle" parameter and problems with light sources at glancing angles, in particular when there i...
by Dade
Wed Dec 05, 2018 7:05 pm
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

Sharlybg wrote:
Wed Dec 05, 2018 3:04 pm
It should be now very rare to have to tune DLSC parameters.
No matter the condition. which kind of condition are cover by your fix.
Sorry ?
by Dade
Wed Dec 05, 2018 2:25 pm
Forum: User Support
Topic: DLS and material settings
Replies: 6
Views: 100

Re: DLS and material settings

I think the direct light cache still uses light sources with direct light sampling disabled. Maybe this could be considered a bug in the direct light cache? Yes, it had no harm but it was a waste of time so the light sources, with DLS disabled, are now skipped when filling DLSC information. By the ...
by Dade
Wed Dec 05, 2018 2:18 pm
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

This rendering explains the source of the problem: prob.jpg Triangles have normal interpolation and, often, the line between "day" and "night" falls in the middle of a triangle and it is due to the interpolated normal starting to point "away" from the light source. Now, if DLSC picks the cache entry...
by Dade
Tue Dec 04, 2018 3:36 pm
Forum: Development
Topic: Usability and Luxcore workflow streamlining ideas
Replies: 35
Views: 422

Re: Usability and Luxcore workflow streamlining ideas

Also, some sort of luxcore ubermaterial (preferably metalness+roughness) should completely replace matte,glossy,metal,glossy coating and glass materials... ideally all matterials except specials like carpaint(which should also include flakes) and some easy to set-up skin material. Materials is a bi...
by Dade
Tue Dec 04, 2018 11:12 am
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

I sent you a PM with the scene. About the carpet on the floor I confirm I used a matte material Thanks, going to check but I have the strong feeling the problem is in the impossibility to have reliable cache information over the carpet (the particle system for hair simulating the carpet will likely...
by Dade
Tue Dec 04, 2018 11:08 am
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

And what's up with the spot made of bright pixels here? Related? The first step when checking a DLSC related problem is always to switch max. path depth to 1 so you will see only direct light sampling: prob1.jpg It becomes quite evident that at glancing angles the information of the cache are not c...
by Dade
Mon Dec 03, 2018 8:16 pm
Forum: Development
Topic: DLSC Explained
Replies: 25
Views: 989

Re: DLSC Explained

Sharlybg wrote:
Mon Dec 03, 2018 7:33 pm
found the problem :

Nvidia Titan black render :

AMD R9 390 render :
Uh, that looks like a driver bug, you could try to check if there is an updated version (but I'm not sure if the 390 driver is still updated/maintained :?:).
by Dade
Mon Dec 03, 2018 4:09 pm
Forum: User Support
Topic: Direct Light cache: how to avoid splotches?
Replies: 39
Views: 724

Re: Direct Light cache: how to avoid splotches?

Isn't this always the same bug? I mean visually it always looks like the MIS issue with caching, or is it something different? Only if it is glossy and I asked before (https://forums.luxcorerender.org/posting.php?mode=quote&f=4&p=8053#pr7607) to redo the test with mate material so I assume the abov...