is it possible to view passes (i.e direct specular) in preview render?

I use Arnold in my day job and and quickly switching between individual passes whist shading is invaluable in my workflow even for debugging render errors or noise and optimisation. I don’t think its doable by default in blender but perhaps someone knows of an addon perhaps that will do this?

Thanks

The most I can offer is patchwork of detours;

  • AO can be enabled in the viewport, you also have an AO shader which you could set as displey shader in the nodes setup.
  • for certain bitmaps like specular and such texture view is sometimes useful.
  • false colour and the like in colour management helped sometimes

Closest I ever got to this was having a set of nodes that I would connect to the output node seperately (or mixed) and view from material shading mode.