3 commits

Author	SHA1	Message	Date
lawnjelly	a5f9f581fa	Tight shadow culling - increase epsilon to prevent flickering ... Near colinear triangles were still causing inaccuracy in culling planes, so the threshold for colinearity is bumped up.	2024-05-18 14:29:16 +01:00
lawnjelly	46a04d160e	Tighter shadow culling - fix light colinear to frustum edge ... In rare situations if a light is placed near colinear to a frustum edge, the extra culling plane derived can have an inaccurate normal due to floating point error. This PR detects colinear triangles, and prevents adding a culling plane in this situation.	2024-04-09 07:25:35 +01:00
lawnjelly	8ca631a466	Shadow volume culling and tighter shadow caster culling ... Existing shadow caster culling using the BVH takes no account of the camera. This PR adds the highly encapsulated class VisualServerLightCuller which can cut down the casters in the shadow volume to only those which can cast shadows on the camera frustum. This is used to: * More accurately defer dirty updates to shadows when the shadow volume does not intersect the camera frustum. * Tighter cull shadow casters to the view frustum. Lights dirty state is now automatically managed: * Continuous (tighter caster culling) * Static (all casters are rendered)	2023-11-14 14:17:57 +00:00