$envmap not rendering on material where it should.

[granis48]

Describe the bug

If a vmt specifies an $envmapmask texture at the same time as $normalmapalphaenvmapmask 1 it will stop rendering the cubemap reflections altogether.

How To Reproduce

Here is the material this bug was discovered on glass.zip. Seems to happen on every (only tested LightmappedGeneric) material that uses both an envmapmask and the other parameter with it.

Issue Map

Here is the map where this bug was discovered surf_axiom. The glass texture can be found allover the map but here is a comparison: css momentum

Expected Behavior

I don't see why anyone would ever use $normalmapalphaenvmapmask 1 when they have an actual envmapmask already specified but since it works in css i expect it to work in momentum mod as well :)

Operating System

win10

[granis48]

Turns out this is a duplicate issue https://github.com/momentum-mod/game/issues/1268#issuecomment-812737968. I guess we gotta decide if this is worth "fixing" by doing what css does and prioritize one of the parameters, or if we'd rather just fix the material in the maps where it is used as we add those maps to the game.