RE: [Algorithms] Re: Portal VS BSP

[Neil S. <ne...@r0...>]

> Wait a minute... portals vs. PVS vs. dynamic visibility. When 
> did they multiply? I believe there were only two of those. :) 
> By dynamic visibility I ment using portals in runtime. I 
> don't know of any useable zone-based system with runtime 
> visibility where you don't use portals.
> What exactly are we talking about here?

LOL. I thought I knew. ;)

By dynamic visibility I was talking about something like dPVS, hierarchical
occlusion maps and so on, i.e. there is no scene preprocessing. This is what
I thought you were doing. I would classify portals as a static visibility
solution if they are calculated from a static scene (and not some
component-based thing).

> What we were using was dynamic visibility based on portals 
> and with occluders put in the whole soup. So you get occluder 
> fusion at run time, with little extra costs. What you are 

Ah, so we were advocating the same kind of thing: portals with occluder
fusion. Which I think is a pretty good idea. ;)

I was only talking about PVS because the original question was "portal vs
BSP" (actually "portal vs PVS"). Sorry for any confusion.

- Neil.