2
$\begingroup$

OK, I know the question is kinda usual. My problem is I want some objects in a scene completely transparent/invisible (in most of the render passes) while I still can show it in either material or object index pass. I would avoid duplicate the scene because it's quite large and complicated and the less labor, the merrier.

Improve this question
$\endgroup$
1
  • $\begingroup$ Fully transparent material does not give material index pass, but partially transparent does. Maybe it is a bug. $\endgroup$
    – Jaroslav Jerryno Novotny
    Commented Nov 18, 2016 at 15:52

1 Answer 1

Reset to default
3
$\begingroup$

In Cycles you can adjust the Alpha Threshold for the Render Layer to adjust how layers are affected by transparency. Setting the Alpha Threshold to 0.000 will result in all objects - even those that are completely transparent - affecting the Index passes (as well as the Z, Normal, UV, and Vector passes).

Alpha Threshold

Improve this answer
$\endgroup$

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .