Check out this God of War video.
specifically…look at the crystal.
As he’s carrying it around, I think i’m seeing a row of additive particles that only show up where the crystal is rendered, but they happen before the translucent pass? I see them as being in a row inside the crystal, near the base. I think it’s particles because subtle rotational differences happen with the angle of the system.
THEN…as he’s running up the stairs, the material is (pop) suddenly emissive.
My guess is that a light left the list and that made it think it had to use “transmissive” angles from in front of him. So what would have been an angle with no contribution is now suddently shining?
I honestly don’t know and would love to hear what you guys think is going on.
How were the crystals made?
What type of materials?
Was there a particle system or is it some kind of depth offset?
Why does it suddenly become emissive?