While developing a game in jME3 RC2, I ran into an issue with PSSM shadows. When the light source is directly overhead (direction=[0, -1, 0]) black artifacts appear on horizontal surfaces which have ShadowMode.CastAndReceive
For the moment, I’ve worked around this by tweaking the light direction. If anyone’s interested, I have a 80-line test-case based on TestPSSMShadow.java which demonstrates the issue.