Hi,
In our Studio, we have people working Y up and other Z up. Our render farm has default Maya preference, which mean it is setup Y up.
Would it be possible to have an option in the sun to force it to be Z up (like in the Sun/Sky in Mental Ray)?
In my case I am working Z up and cannot render the sun sky properly on our farm.
Internally, the V-Ray sun actually has a parameter for the orientation; you can set it from the Python post-translate callback. I will make a note to look into the possibility for adding an option to choose if the orientation should be taken from the Maya preferences or specified explicitly - in fact, it might be better to make this a global V-Ray option as there are a number of other calculations that depend on the up axis.
Alternatively, you can add a pre-render MEL script when you submit jobs on your farm that sets up the desired orientation in the Maya preferences.