I think we should only use additive translucency for fireballs/plasma and similar things, so maybe we should add another flag?
The ZDoom/Eternity functions also allow custom translucency levels per sprite. If we want more translucency options, I think it's better to use these functions.

I think we should only use additive translucency for fireballs/plasma and similar things, so maybe we should add another flag?

This is what this PR does. The new additive translucency is only applied to fullbright sprites.

The ZDoom/Eternity functions also allow custom translucency levels per sprite. If we want more translucency options, I think it's better to use these functions.

Is this a new dehacked field?

The new functions add a lot of complexity and don't fit well with our streamlined column drawer function factory. Also, the ability to choose different translucency tables at runtime was already there (e.g. for different wall and sprite translucency tables) so it was straightforward to just add another table.

The new additive translucency is only applied to fullbright sprites.

What if there is a custom translucent enemy mobj, will it be drawn with additive translucency in fullbright states?

The new functions add a lot of complexity and don't fit well with our streamlined column drawer function factory.

Maybe this "factory" is a bad idea. I can expand these macros.

What if there is a custom translucent enemy mobj, will it be drawn with additive translucency in fullbright states?

Yes, erm...

Maybe this "factory" is a bad idea. I can expand these macros.

Okay.

What if there is a custom translucent enemy mobj, will it be drawn with additive translucency in fullbright states?

Yes, erm...

Eternity adds a custom preset that is a combination of additive and boom translucency. So Imp's fireballs and plasma are drawn with additive translucency, which looks better. I think this is what DW users want.

Maybe this "factory" is a bad idea. I can expand these macros.

Okay.

Should I do it in this PR?

Should I do it in this PR?

Sure, if you like. I consider my approach rejected by then. 😄