KeyShot Forum

Technical discussions => General discussion => Topic started by: jhiker on May 04, 2010, 05:40:51 am

Title: Bumpmap or texture....
Post by: jhiker on May 04, 2010, 05:40:51 am
I'm still new to this...  ;)
What's the difference between a 'bumpmap' and a 'texture'.
Often when I double-click on a material I get the option to specify both, and I'm confused....
Also, why do I get these options on some materials but not others?
Thanks
Title: Re: Bumpmap or texture....
Post by: jlowap on May 05, 2010, 12:43:09 am
Bumpmap:-
Quote
Bump mapping is a computer graphics technique to make a rendered surface look more realistic by modeling the interaction of a bumpy surface texture with lights in the environment. Bump mapping does this by changing the brightness of the pixels on the surface in response to a heightmap that is specified for each surface.

(http://upload.wikimedia.org/wikipedia/commons/b/b3/Bump-map-demo-smooth.png)

(http://upload.wikimedia.org/wikipedia/commons/3/30/Bump-map-demo-bumpy.png)

SOURCE: http://en.wikipedia.org/wiki/Bump_mapping

Texture Mapping is just placing an image onto a surface :)



Title: Re: Bumpmap or texture....
Post by: Robert V. on May 05, 2010, 01:40:22 am
Where can I find the texturemapping option? I only see a bumpmap option.
Title: Re: Bumpmap or texture....
Post by: JohnG on May 05, 2010, 04:28:56 am
Its at the top of the materials property dialogue box next to the diffuse colour button, however not all materials allow texture mapping so it won't appear with certain materials, such as glass for example.
Title: Re: Bumpmap or texture....
Post by: Robert V. on May 05, 2010, 10:14:02 pm
thanks, found it. works like a dream!