Concept is fairly simple, instead of build everything (static shadows, static GI on light maps, static AO etc), we could use option to select which elements we want to build like:
- Build Lightcache. It will be build static GI light cache.
- Build static directional shadows. Which means it will build all direct shadowing for all lights, but will not build any indirect shadows.
- Build indirect shadows and AO.
This would allow for quicker iteration. Lots of time we really don’t need build everything. Sometimes all we need is AO and indirect shadowing