Fixing bugs in my #blender #pbrt exporter, and adding some features. Currently testing each shader to make sure they behave the way they should when rendered. some values are still causing the render engine to crash when it has rendered for a good while. At least I can reproduce the bugs and get them posted in the pbrt bug-tracker later on. I also have to go through each shader and make sure they have the correct default value and min/max settings and such in the custom blender shader nodes.