Getting shaders channel?



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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 16/03/2004 at 23:55, xxxxxxxx wrote:

    User Information:
    Cinema 4D Version:   8.503 
    Platform:      Mac OSX  ; 
    Language(s) :     C++  ;

    ---------
    What's the correct way to determine the channel a shader is running in? All I found is a hack by Mikael, that seems to make a bit of an effort to get data which were easy to get in earlier SDK versions:

    Mikaels Code

    Is that still the "right" was doing it? Or shouldn't it be done at all anyway?

    Thanks!

    Kabe



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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 18/03/2004 at 00:50, xxxxxxxx wrote:

    Please see "Channel dependent effects" in the What's New section of the 8.503 SDK docs.



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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 18/03/2004 at 12:19, xxxxxxxx wrote:

    Well, first thanks for the pointer, I really overlooked this one!

    However, I can't get it to work. It compiles, but in...

    if (GET_TEX_CHANNEL(sd->vd->tex->texflag) == CHANNEL_LUMINANCE) {  
    

    GET_TEX_CHANNEL(sd->vd->tex->texflag) always evaluates to 0 (==CHANNEL_COLOR), no matter in which channel the shader is used...

    So, where is the pitfall here?

    Thanks!

    Kabe



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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

    On 18/03/2004 at 21:26, xxxxxxxx wrote:

    Found the solution to this one... Don't use "==", but "&"...

    BTW: The documentation of ChannelData->texflag in the SDK is a tad short. Seems that there's only the old variant listed.

    Kabe


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