It looks like using a CoronaVolumeMtl will also affect alpha channel, there’s no way to disable it and it can get problematic when used and global volume material… Could we get a checkbox to disable alpha contribution in this material?
EDIT: Also, using a CoronaMtl as global volume material will also affect alpha in exactly the same way, even when alpha mode is set to black. Not sure if to post this as a bug since this should not happen…?
I tried to play with this and I am always getting zero contribution of volumetrics in alpha channel… can you share a simple scene demonstrating the problem?
Will have to dig out the specific scene, could take a while unfortunately. I can’t recall the situation that led to the request so will have to test, sorry…