It is used to mark surfaces that shouldn't receive dynamic shadows. Useful to apply to walls and floors where shadows are drawn improperly, giving away the location of enemies.
Bug: This entire entity class is a hack to mask shadows appearing on the wrong side of walls.
Note: This is an internal entity. When the map is compiled by VBSP it is processed and then removed: it does not exist when the map is running.
- Brush faces
- List of brush sides that shouldn't receive dynamic shadows.