Bump Mapping How?

In VERY simple terms -
How would I produce,say a `wooden crate` that is textured and bump

mapped to give the crate a more solid,realistic look.So that when looked

at from different angles with different light sources you would see `bump

map` detailing (eg.highlights between the planks or highlight on nails

etc)

What I really want to know in detail is how you produce a bump map

for/from a texture and how the textures are `mixed/layered` and applied

to the model(box in this case)

Hope this makes sense to somebody because it seems a very under

documented area of BLITZ3D

Cheers

Ginge

"very under documented area of BLITZ3D"

That is becuase blitz doens't support bump maps

But it does support Dot3 normal mapping.

Search this site for normal mapping of Dot3 and you will find loads of examples.

http://www.blitzbasic.com/Community/posts.php?topic=33163

Try that. It's not as easy as applying the normal map and letting it go though. I've posted some stuff further down, as to how it works. Hope that helps some :)

Get a grey scale bump map, downlaod nVidia's Photoshop normal map plugin, converter save and apply! Thats all there is too it i think :)

but photoshop costs about 4000$ right?

Well, it's not cheap, but it is available from Amazon.com for $599.99 at the below link:

http://www.amazon.com/gp/search/ref=br_ss_hs/102-2374064-1970558?search-alias=aps&keywords=photoshop

I don't even think it was $4000 a year ago when this post was last among the living.

It never has been $4000, maybe $500. But an educational discount you can get it for about $200.

And in photoshop just go to Filters/Render/Lighting Effects
And play with the bottom most options.

Look in my sig, for heightmap to normal-map convertor.

Thanks Ross C!!! So i dont have to buy Photoshop! Im only 14 years old, so i dont have so much cash heh..

So Ross can charge you $250 and you still save 50% ? :P

Here's how you can make normalmaps DIY (PS needed):

http://66.70.170.53/Ryan/nrmphoto/nrmphoto.html

Normal map to displacement (height) map:

http://66.70.170.53/Ryan/heightmap/heightmap.html

normal map plug-in for GIMP (which is free "PhotoShop"):

http://nifelheim.dyndns.org/~cocidius/normalmap

Free GIMP .DDS load/save plug-in (if Blitz3D only had DXTC...):

http://nifelheim.dyndns.org/~cocidius/dds/

GIMP:

http://www.gimp.org/

Hehe, never thought of that! Cool links btw