CGTalk - Displacement maps

Klaymen

02-25-2005, 11:43 AM

I've started working with displacement maps now... But i cant make it look right..

What im trying to do is a cube, with a material all over it, same size and tiling everywhere.. Adn then i want to add a displacement map to some of the polygons, so that a text is shown... The problems i have are:

1. The displaced polygons all extrude from the surface, instead of just the text. If i have a black text on white background i want the text to go into the cube and the background to stay where it was. What i get now is the text stays and the background gous out of the cube.. if i change the dispalcement amount to 0 i see nothing.. if i change it ti -100 the text stays and the background goes into the cube.

2. Cant make the UVW maps work.. Seems like if i change settings to one map, all maps change... I only want the diffuse and bump all over the cube, and the displacement over just a few polygons..

If someone could help me i would be very thankful. A tutorial would be good, although i already looked through a bunch of tutorials and they didnt help me much.

Rens

02-25-2005, 12:34 PM

Hi,

1. Go to the bitmap map in the Material Editor, scroll down to Output and toggle Invert. White goes up, black stays down, you went in reverse. :)

2. You should only see the text go up now. But you can assign multiple UVW Map modifiers and assign different map channels to them.

Good luck,

- Rens

salmonmoose

02-25-2005, 05:30 PM

displacement works a little differently to bump, you need to work from a surface level, so the background of you text needs to be a 50% grey, then you make white go up, and black go down.

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