I am looking for collections of GLSL Shaders that work well in PD. I am just getting into the GLSL part of GEM. Eventually I would like to write my own shaders but for now would really love to mess around with things other people have done. If anyone knows of any please let me know.

-Thanks

you're asking for something a bit meaningless, in my opinion - shaders need a certain amount of "scaffolding" (ie, stuff that sets shader "uniform" parameters, not to mention the compiling and linking stuff) to be useful, it would make more sense if you were asking for "shaders with pre-built scaffolding in Pd". and if you're asking for that, I don't know the answer - beyond what is bundled with Gem's manual...

the way i work with shaders (in C, not Pd) is to write lots of little shaders for custom tasks - the code ends up being sorta dataflow processing with textures being passed around through shaders into other textures - but using Pd+Gem (supposedly dataflow language) obfuscates that more than C does. imho, ymmv