A_Overlay Blending Modes + Masking

[torridgristle]

It'd be nice if A_Overlay could be used to add a warping energy texture, like Quake's Quad Damage, but in order to do so it would need to have blending modes, like additive, and masking so that a full-screen warping animation can be made and then set to only show up on the underlying layer, like a clipping mask in Photoshop.

An option to use either the layer immediately underneath it or all layers underneath it for a mask would be useful. For example you could have a sprite with a computer screen on it, A_Overlay a new layer on top of it that is just the screen, and then A_Overlay an additive layer with a scrolling VHS tracking lines texture that uses only the screen layer for a mask so that the VHS texture only appears on the screen and not the whole gun.

[NeuralStunner]

... Or even have additive-blended gunflashes, which has been a modder's dream for 6+ years.

[Major Cooke]

The only thing you can really do right now is have PNGs with translucency unfortunately. A_Overlays won't be able to fix this.