lightmaps and more

Hi all,

I need to show the level with just the lightmap and then show the level with the textures and lightmap. The level is so suitably annoyingly huge that loading and reapplying all the textures again would have a huge hit because this is in realtime. Any ideas?

Rubbish fudge way of doing it would be to have 2 versions of the level, one with textures and one without, then just show/hide as necessary.

Ok, not too slick but it would work.