German mr Forums

Remember Me

Recent Uploads

Hot Downloads

Most Popular

Home Jeff's Blog Displaced Terrains in mental ray
Displaced Terrains in mental ray PDF Print E-mail
Written by Jeff Patton   
Thursday, 21 June 2007 14:23

Some people have asked for more information on an example displacement terrain scene I created. So, here's a little breakdown on the process & tools used:

Example render (click to enlarge)


First, I used a program called gwTerraNoise to create the displacement map. It's very easy to use and provides some excellent results, here's a link to the download site:
http://www.guruware.at/main/index.html

I used a Rigid-Multi generator in combination with a curve modifier to create a basic landscape pattern and then I saved the image as a 32-bit TGA file.
Note: gwTerraNoise (click to enlarge)


I then plugged the black&white TGA file into a height map displacement map on an A&D material.
Displacement (click to enlarge)


Note: For more info on the height map displacement map, I have an older tutorial here:
http://jeffpatton.net/MR_Grass_Displacement.htm

I also used the black & white TGA file in a mix map to blend some color into the terrain. I used a darker color for the lower areas (black sections of the .TGA file), and a light color for the higher areas (white sections of the .TGA file).
Diffuse map (click to enlarge)


Note: I also used a bump map on the A&D material to create some smaller details. I used a smoke procedural map for this bump.

Finally, since I used the B&W displace map as a color mixer for the diffuse component of my material, I was able to use the "show map in viewport" button to help distinguish where to place my camera since the displacement happens at render time, and not in the viewport.
Viewport (click to enlarge)


NOTE: I haven't forgotten about the remaining parti-volume documents. I'm afraid it'll have to wait until I get back from SIGGRAPH. Right now I have to focus on getting a few projects completed before the show as well as preparing my masters class presentation.

Blog entries may be discussed in the 3DA forums HERE
Trackback(0)
Comments (2)Add comments
talal bourahhioui wrote on March 01, 2010
 
Title: How to use Landscape (lume) shader to texture a landscape
Hi Jeff,
I thanks you for the help you bring to young learning artists, and i want to have some help about Landscape (lume) to texture a landscape.
About the modeling of the landscape i had some issues to get the results i need, i get the terragen 2, but i need to know how to draw exactely the terrain i want.
Now i model a simple landscape, and i need to know how to use landscape (lume) to texture it.
Thanks !!
report abuse
vote down
vote up
website
Votes: +0
Jeff Patton wrote on March 01, 2010
 
Title: ...
Thanks for the feedback. I've been wondering what to cover next in my blog and a terrain topic sounds pretty good. I'll be sure to work the landscape(lume) shader into the mix as well. :)
report abuse
vote down
vote up

Votes: +0

Write comment
You must be logged in to post a comment. Please register if you do not have an account yet.

busy