CompuServe Messages

#Opacity map not Transp.

    29-Sep-95 12:17:06
Sb: #Opacity map not Transp.
Fm: John N. Jordan 72772,1271
To: all
I'm having some trouble using a opacity map to cut out a flat object, it seems that pure RGB black isn't 100% transparent.. is this a "feature" or an error on my part? I'm using an RGB TGA file for the grayscale transparency map, since I used this successfully before. (I know it doesn't make sense) I got 3DS cutting out shapes before (after many test renders, file formats, etc.) but it's not working now. The maps are high rez (~1k), and are used to cast raytraced shadows.. I have several maps to do, and it'd take too long to recreate them in a vector program, but I would prefer a mesh over opacity raytracing. Any info would be appreciated. JNJ