PheonixRising opened this issue on Sep 27, 2001 ยท 31 posts
Nance posted Thu, 27 September 2001 at 10:00 AM
Waaaaah... Ok, I've been suggesting, less than convincingly it would seem, that folks try manipulating the Shadow Lite Cams rather than scaling the shadow maps. It accomplishes the same thing, and affords much more control, & can save memory and render time. It is the Shadow Lite Cams, as opposed to the lights themselves, that determine the field of view from which the shadow maps are generated. Often, these views cover a field vastly wider than the area included in the actual render. As such, most of the pixels in the shadow maps are wasted -- which is why people try to overcome this by using giant, memory hogging, render bogging, shadow maps. Because these cams can be moved independently of the lights to which they are parented, if you do want to yield softer, more feathered shadow edges, just zoom the Shadow Cam out. If you want harder shadows, zoom the light's Shadow Cam in. It works, & its fast, really! You can do other stuff as well, but I'll settle for this bit for now!