Inspecting EXRs from DR slaves

If for some reason distributed rendering does not work as expected, it is advised to check the images generated by each render node. To do so:

1. On master PC: go to Render Setup > System > Distributed Rendering and check "[DEBUG] Retain EXRs" checkbox

2. On master PC: start distributed rendering

3. On master PC: stop it after at least 1 pass (or after the problem appears)

4. On master PC: hover your mouse cursor over "[DEBUG] Retain EXRs" to see path to the folder where the received images will be stored

5. On master PC: go to that location and inspect the EXR files received from each render node