how to make a bumpmap ?

[Boost3d]

if i create a texture i wanna use for a wall in Maya how do i create a bump for it so i'll look somewhat close to realistic ?

[magnusol]

Try alias wavefront homepage in the How to´s section they hav a tutorial on how to make a realistic brick wall

hope that helped
/magnusol

[Danny1152]

i make simple bumps map by opening the picture / texture in photoshop and gradient mapping it using black and white.

Generally you want to do bump maps in greyscale, (I don't know of any reason to do otherwise but maybe someone else does,) so a good starting point might be to get a good quality photo of a brick wall & convert it to greyscale. Now you need to figure out which bits might need tweaking - white is high & black is low usually so the lighter the colour, the higher bump it will produce. This might be a problem if the mortar between the bricks is light in the colour version but is recessed into the wall. I see a lot of wall renders where the mortar juts out, which can sometimes happen but usually it creates a concave recess. There are a number of things you can do to rectify it - use the burn tool (I rarely go above 20% maximum & use as big a brush as you can get away with.) or select all the mortar (how you do that is up to you - magic wand might work, or else lasso, or paths maybe) & use levels etc.
Levels is a useful tool for helping to get the bump (or specular) map you want & should be experimented with.