Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: pmcf1981 on 2016-03-07, 23:22:32

Title: displacement
Post by: pmcf1981 on 2016-03-07, 23:22:32

hi guys


I am applying a displacement map

but the map fills a lot, in some cases exaggerated way , I'm not sure if the geometry influences or the map is not the right thing

just wish it had a small sharp curves without much exaggerate the overall shape


any tips to avoid ?

Title: Re: displacement
Post by: iLEZ on 2016-03-08, 09:40:47

Have you tried playing around with the "luminance center" setting in the displacement? Are you using the modifier or piping a map into the material? In the material there is a min- and max-level setting. Try setting the min level to a negative value.

Title: Re: displacement
Post by: pmcf1981 on 2016-03-09, 10:05:05

hi ..

iam using modifier  ... luminance center ???

Title: Re: displacement
Post by: romullus on 2016-03-09, 11:06:10

It depends on your displacement map. Can you show it?

Basically it's very simple, black colour don't displace at all and white colour displaces by amount set in max level. If your map is constructed in a way that mid grey (127, 127, 127) shouldn't displace and blacks and whites should displace inwards and outwards respectively, then set min and max levels to oppositely equal amounts (-1 and 1, -5 and 5, and so on) in displacement settings.

Title: Re: displacement
Post by: pmcf1981 on 2016-03-09, 13:12:52

thks iLEZ and romullus ..

i understand but if the map is black and white grey scale but if is normal

think its better convert grey scale and avoid ...

thks a lot :)

Title: Re: displacement
Post by: romullus on 2016-03-09, 14:50:37

No wonder why you're getting bad results when you use maps like these for displacement :]

Title: Re: displacement
Post by: pmcf1981 on 2016-03-09, 15:50:46

this is an exemple of maps  its better normal map or bitmap greyscale (black and white) for displacement

Title: Re: displacement
Post by: romullus on 2016-03-09, 16:59:29

For displacement it doesn't matter if it's RGB or greyscale bitmap. You won't get good results from those textures anyway. Displacement requires specially created map and it's practically impossible to get good displacement map from photographs, unless you taking them with some kind of light field camera :]

Title: Re: displacement
Post by: Nekrobul on 2016-03-09, 17:37:26

Quote from: romullus on 2016-03-09, 16:59:29

For displacement it doesn't matter if it's RGB or greyscale bitmap. You won't get good results from those textures anyway. Displacement requires specially created map and it's practically impossible to get good displacement map from photographs, unless you taking them with some kind of light field camera :]

Or you could try to use sth like Pix plant for creating displacement maps. But anyway those would not be as good as sculpted geometry converted to heighmap.

And other thing. If it is converted phototexture they you should always combine displacement (for structure and large detais) and normalmap in bumpslot for fine details.