Subtractive blending?

[Overkill]

Is it possible to utilize the subtractive blending extension to OpenGL with LWJGL programs? I can't seem to find it in the java docs. I just figure it'd be useful to have, y'know, having additive and alpha blending available. Especially for something like two-dimensional lighting or shadows. If it isn't available, anyone know a good workaround?

[spasi]

EXT_blend_subtract is available in LWJGL and it's also in core OpenGL since version 1.2 (in ARB_imaging).

[Overkill]

Nice. Thanks, this is helpful.