Normal Mapping Cube map technic!

You can do normal-mapping with normal texturing and register-combiners (asuming you're using opengl)... Or am I getting you all wrong?

Yes i m using opengl... but the thing is... the cube map always using glActiveTextureARB(GL_TEXTURE1_ARB); so for mutitexturing we need to do a second pass... i read that the cube map gives a better detailed normal mapping... so does it worth the second pass?

THX

Quote:

Original post by golgoth so does it worth the second pass?

I wouldn't say so, since a whole pass will take up alot of extra rendering-time...
But, try both and see what fits your needs best :)

OK, I haven't implemented normal maps so feel free to ignore me.

I'm guessing you're using the cube map just for normalisation, yes? If so, you could do it in a shader instead - maybe slower, but frees up that tex unit for you.

Is it worth normalising? Up to you - what does it look like?

It looks pretty good but takes a lot of cpu time... since i cant compare with none cube map method its hard to tell if it worth it or not... but it sure looks good! i ll work on one pass method and i ll post my results... upfully soon! it s quite a headheck... :)

THX