Speed up shadow volume generation

[Haddayn]

Is there any way to speed up shadow volume generation? My application takes much longer when I use shadow volume scene nodes.

Also, there seems to be a problem with shadow volumes, sometimes shadows have stray polygons stretching to the bottom of the view. Or, to be specific, 'sometimes' is when I have double-sided polygons (by 'double-sided' I mean two sets of polygons, which share vertex data, but have opposite winding).

[Nadro]

If you want to speed up shadow volumes you must modify Irrlicht and calculate shadow extrusions inside a vertex shader.

[CuteAlien]

It might be possible to use simplified shadow geometry which is only used for shadow generation (not tested by myself).

[Mel]

I wholeheartedly encurage you to try shadowmaps instead of shadow volumes. I have nothing against them at all, but the shadow maps give less problems, they look nicer in some cases and don't require the usage of geometry shaders to generate the volumes