Hi ,
there`s a demo at nvidia.com on how to do detail bumpmapping , basically you have two bumpmaps laid on top of each other …
The Normal for lighting is optained by adding the two normals together and renormalizing …
Hope this helps …
Martin Kraus
>>The Normal for lighting is optained by adding the two normals together and renormalizing …>>
aint gonna give the right results, u want the ‘space’ of the second bumpmap orientated from the first one (not an easy thing to do).
one method is to just treat the bumps as heights and then u can add / devide etc and then from the height data create the bumpmap.
Hi ,
if the second texture space is just a scaled / translated version of the first one its going to work fine ... the only thing you cant do is a rotation from one map to the other … but that`s not needed for the standard detail map approach where you just tile the detail map multiple times over the standart one …