i'm hoping to use some glsl shaders that were written for GLGraphic library, but use processing 2.0.  as the GLGraphics library hasn't been updated yet for Processing 2.0 the current form of the Glsl shaders don't work.  I presume it should be possible to use the new PShader system in Processing to use the old shaders, but i'm unsure how to convert them.  looking at the included shaders in the processing 2,0 examples doesn't help too much.