Displacement mapping not showing up

[user_deleted]

Hi all
I am fairly new to Maya and wondering if there's some option I've forgotten to check, as I apply a displacement map to an object and that displacement doesnt show up in the work area - I'm using a VX1. I have connected the OutColor of, for example, a checker 2D texture to the displacement map node of my material, and I dont see any bumps. Is this normal? I come from a Lightwave modelling background where displacement maps do affect the geometry.
Please tell me if I am being dense

thanks

Lucas Young
Digitalus

[actarus]

Does the geometry you are using the
displacement map on have enough detail?

I'm sure you knew that in lightwave a displacement
map wont displace a flat plane, if the plane only
has 1 polygon in it.

Same with nurbs, except with cv's,
does the surface you are trying to deform have enough
CV's to deform correctly?

-Tad
LHPtomi@hotmail.com
icq: 24416123

-Tad
LHPtomi@hotmail.com
icq: 24416123

[user_deleted]

Hi, thanks for the reply.
I tried a number of different divisions on anurbs plane, 25 by 25, 40 by 40, to no avail.
I also notice my texture previews are quite chunky with the VX1, dont know if that has anything to do with it

Lucas

[actarus]

Yeah I get chunky textures too.
(i'm also on vx1) but i dont think it's the
graphics board. I'm pretty sure it's software, cuz
it was like that with my old card also.
And it says that it's supposed to be like that for
some textures in one of the tutorials for maya.

ALso it sounds like you havent connected the displacement
map correctly, try to assign the displacement map to the
shading group. Dont just connect the attributes in the
connection editor, I always have problems with that.

-Tad
LHPtomi@hotmail.com
icq: 24416123

-Tad
LHPtomi@hotmail.com
icq: 24416123

[tbriggs]

The default hook-up for a displacement presumes there is an alpha channel (same thing happens with bumps) in the image. If your image doesn't have one, no displacement. Try hooking up one of the rgb channels to displacement and see if that works.

Thomas Briggs
## Never confuse motion with action
www.mainnet.com/tbriggs

Thomas Briggs
## Never confuse motion with action
www.mainnet.com/tbriggs

[fredc]

Sorry dudes. You can't see bump maps or displacement maps in a View Window. You can see the texture used to make the bumps, but not the results. Interactive work is done with Guaraud shading (sounds like "Ga-row"), which by nature does not support these features. You have to render with at least Phong or Raytracing before you can see bump results. However, these aren't currently supported on graphics cards, and typically only used for previews and final renderings. Although, in time I'm sure well see these rendering methods supported on graphics cards too.

If your textures look "chunky", such as the checker board, you can up any texture's display resolution with it's parameter settings.

Hope this helps,

Urp