Thanks for the suggestion. I went back to take another look. The issue seems to be that if I move the shadows back, then they will vanish entirely (the particles won't shadow themselves, but won't shadow anything else either).
http://i.imgur.com/NfHx7.png (screenshot - ignore the "particle" text, which is part of the HUD).
I suppose I could use two separate shadow maps - one for particles where the depth is offset slightly, and one for meshes where the depth remains the same.
SquidshireMember Since 18 Jul 2012
Offline Last Active Aug 11 2012 11:48 AM