A thought regarding Doom 3's shadows. . .

Ostsol

Veteran
This may be obvious, but does Doom 3 use static shadow volumes for static lights and geometry? It just occured to me that it'd be pointless to recreate shadow volumes every frame if neither the geometry nor the light ever moves. Of course, for such situations lightmaps could also be used, but then the shadow wouldn't be projected onto any object that moves into it.
 
I'm pretty sure Doom3 caches shadow volumes and uses them as long as neither the light source nor the object moves.
 
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