Zanzo opened this issue on Feb 14, 2008 · 120 posts
bagginsbill posted Thu, 14 May 2009 at 10:15 AM
2048 is crazy? It depends. What is your shadow map trying to include?
When people build a whole city and try to render a few feet around a figure in the middle of the city, even 2048 is not enough. At that resolution, the entire figure is recorded in only a few pixels of the shadow map.
To determine what a 256 pixel wide shadow map can see, you have to render through the shadow cam at 256 pixels. I don't have time to try it, but you could. Select your shadow camera as the render camera and set your render dimension to 256 by 256. What do you get. Zoom in and see how some pixels have to share info both from the head and from the neck. In such cases, where is the occlusion point for that shadow map pixel - the head or the neck? It can't be both. You only get one depth value per pixel.
Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)