I tried the caelum lab samples and tried out the pssm shadows.
As I understand the AlphaRejectionTest material should produce shadows trough transparent textures but all I get is the following:
Are the material/shaders incomplete or am I missing something?
The pssm shaders are indeed incomplete and don't properly deal with transparency. I actually started to fix them at some point but got stuck on some material scripting issues and didn't finish (it requires custom shadow casting for the alpha materials).
I'll try to commit a version that works correctly later.
Thanks for the reply.
That would be a lot of help if you do that!