I'm new to blender from cinema 4d and am trying to get my head around the render layers and file output nodes so I can combine my passes in Nuke. I have all my render layers setup inside Blender and am able to view them just fine, with exception to the direct diffuse pass. For some reason when I connect it to the viewer node all I can see is black, and when I import into nuke there is zero data whatsoever, just a black image.
this is pretty annoying as a diffuse pass is the base layer that all other passes stack on top of, so I cannot do any compositing. I've got no clue what I'm doing wrong, but this is a screenshot of my node layout as well as my monkey head material underneath. The third screenshot shows a glossy render layer correctly showing in the viewer. Thanks!