OSL Ambient Occlusion Shader: Procedural Dirt (test_fix)

Today we’ll explore yet another way of making procedural dirt (ambient occlusion) in Blender, using OSL shader by Francois Gastaldo. Note that I’m using modified version of this shader, posted by BAO2 on Blenderartists. Original version: Rocket Artillery model by SONGKRO on Blendswap. Feel free to s