I’ve got a wall texture, wall detail texture, wall normal map and detailed normal map.
Detailed textures/maps Are BIG (~50 Mbytes uncompressed).
Simple bumpmapping looks good is the wall seen from a distance. Simple detail maps (without bumps) are pretty good at a close distance.
Because of the size of detailed maps (tex & normal) I decided to to rip these into rectangles and show “on-demand”
Is there any way to do this, so it looked like a “detailed bump-mapping” ?
Thanks in advance,
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 …
>>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.
This page has a download for the demo Martin was referring to. It called “Detail Normalmaps”.
if the second texture space is just a scaled / translated version of the first one it
s 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 …