What's r_mirroralpha doing exactly?
It is something like rendering to texture from the reverse visual angle it seen? Well, it can't be that precisely because it isn't doing a texture upload.
I suppose I can walk through it but it occurs to me that altering the r_mirroralpha code could be an awesome way to make a viewscreen in Quake by instead of rendering from it's own viewpoint, rendering from the viewpoint somewhere else in the map.
You could make a security camera so some such thing. I do wonder why some video cards (Radeons?) don't support r_mirroralpha. I could probably dig thru Google to find out what OpenGL thing it hates.
I might do some experiments and post shots here.
Inquisitive minds want to know ! And if they don't -- well like that ever has stopped me before ..
