Originally posted by Jack Of Spades
How did you do the roughness of the walls?
Looks very realistic.
Mate, this is easy...
First of all I made my textures in Photoshop so this "tutorial" use Photoshop commands
You made first the color texture for your object lets say… texture_color.psp, now you make a copy of this… texture_bump.psp, ok so far so good…
Now you take the texture_bump.psp and desaturate all texture layers (if there are more than one) to obtain a gray scale texture.
From now one everything you have to do is to play around with the adjustments (level or brightness/contrast, or both) and with filters (blur or sharpen) to obtain the desired roughness.
You save the files in jpg, bmp, tiff or other extension and obtain for example: texture_color.jpg and texture_bump.jpg.
Now you are feel free to use those thexture files in Maya in Hipershade to define your object material
Hope this will help
"Imagination is more important than knowledge" A.Einstein