Re: PVS generation

Rob Shields (
Tue, 11 Jun 1996 14:51:58 -0400

Date: Tue, 11 Jun 1996 14:51:58 -0400
From: Rob Shields <>
Subject: Re: PVS generation

Bernd Kreimeier wrote:

> Sampling on a grid is definitely not a good idea.
> Doing a simple raycasting from each center of
> a leaf might serve as a "fast vis" function.
> Clipping by distance is another idea that will not
> correctly determine a PVS, but will be fast. Any
> other ideas?
> b.

A BSP builder could have several options for quality.
One could raycasting from the center of a leaf, another
could be from the center and the corners, etc.
Increasing the number of origins for the rays each higher
level of quality.

Rob Shields