Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: peterguthrie on 2017-04-18, 22:02:33

Title: displacement help
Post by: peterguthrie on 2017-04-18, 22:02:33

I would like to try doing an animation of this scene, but getting stuck on getting as good displacement as with vray. Plus it looks terrible when animated. Should I just abandon using displacement on the rug and just use bump/normal bump?

I have tried setting the displacement to world units but it is very hard to control

http://www.the-boundary.com/elizabeth/4e3rb8o8m3zdx5kyprguou5ynrgufm

this is an example of where 2d displacement would be a huge help i think.

Title: Re: displacement help
Post by: Dippndots on 2017-04-19, 10:00:48

I've resorted to the displace modifier a lot recently, polys are cheap right?! A combo of that a decent normal map usually gets the job done for stuff like stone walls, haven't tried on something as "noisy" as a rug though.

Title: Re: displacement help
Post by: maru on 2017-04-19, 11:55:37

For now our suggestion is to use displacement for larger scale features of objects, clearly visible to the camera (e.g. close to it). Bump/normal maps should be usually used for smaller details.
Other than that, using world-space displacement should help get rid of flickering, which is otherwise visible in animations.

Title: Re: displacement help
Post by: Ludvik Koutny on 2017-04-20, 13:06:07

World space displacement is almost never answer to anything. It pretty much always produces visually inferior results and costs ridiculous amounts of RAM. I don't even think it's appropriate to keep suggesting it as a solution/workaround, because in most cases, it will just waste people's time without really helping them.

Title: Re: displacement help
Post by: Juraj on 2017-04-20, 15:37:54

I was never successful in displacing this kind of micro-noisy carpet yet in Corona.

Instead, I just give it some more shell/push thickness and use obscene amount of normal mapping. Now when terminator is gone, it works rather sufficiently.

This kind of carpet now actually looks way better in real-time with their parallax occlusion bump map :- ) I've heard F-Storm integrated it instead of displacement in some form ?

Title: Re: displacement help
Post by: NicoB on 2017-04-20, 16:12:23

Hej Peter,

as seen on the homepage I would go with the attached displace map.
(Maybe manipulate it further..16bit or so).

I´m always tiling this map pretty small with displace screensize 1.2 px.
I know this is may sound over board, but if there´s enough RAM you could go even to 1.0.

Give it a try and grettings to Simon! :)

best
Nico

Title: Re: displacement help
Post by: NicoB on 2017-04-20, 16:16:17

..I forgot something.

For the settings in material I go for.
-0,3cm MIN  &
+0,7cm MAX

Or the other way around..what looks best.

(depending on object thickness)

best
Nico