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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED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


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