Alright, another one: weird alpha stuff

vvvv beta question
1

Please help me understand this:

I have a Phong shaded grid displaying images - the Grid sits on top of a Box. Inactive images are faded through the alpha value. Depth buffer is set.

  1. While I (kind of) like the effect, why are the boxes affected by the grid’s transparency?

  1. Why are they not when I just turn the camera to the other side?

(also note the Text underneath the displays)

??

thanks in advance,
purf

2

unfortunately depthbuffer and transparency really don’t like each other. read the part Where Drawing Order Matters… on this page: Transparency

the AlphaTest node can help sometimes, but its limited…

3

you could sort your transparent objects back to front and draw them accordingly.

edit: on reconsideration, forget what i just typed above. :D

4

fun fact: I presented the above stuff today and nobody noticed. Bless the not-so-tech-savvy!
Tonfilm: Uhm. Maybe… later? :p In all seriousness, for this work it’s really just cosmetics - if anything - and on this project (in its current state) I can’t be arsed to even try out what the document on Transparency suggests. shrug I’ll go with a darker Grid and Text(Geometry) instead. But thanks! I had wondered about this on several occasions and now was a good time to understand what’s causing the issue.