Direct Bump

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 01/03/2003 at 12:43, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   8.012 
Platform:      
Language(s) :   C.O.F.F.E.E  ;

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I need help with my shader. I want to make it support direct bump.
So i've calculated  new_normal = ! ( cd->n + delta_n )
I don't assume that it will give the desired result. But when i return "new_normal" in the Output function of my shader, it doesn't affect the bump mapping at all. The sphere i test it with has absolutely no bump.I guess i am doing something basically wrong here.
Btw. If i return "new_normal" in the color channel i can see clearly the desired structure.
Michael

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 02/03/2003 at 09:52, xxxxxxxx wrote:

Are you defining      CHANNEL_DIRECTBUMP in the overloaded GetRenderInfo function of your shader data?

Then in output you have to set cd->vd->bumpn to your new_Normal.

That is all I do. The tricky part ( where I spent alot of time in SLA ) was contstructing the messaging system so that complete texture trees could be evaluated for the bump channel ). Now that was fun! 😕

bt

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 02/03/2003 at 15:35, xxxxxxxx wrote:

Meanwhile i found this out myself.
Thank you anyway.
Michael