haha, good point, in which case you definitely want the Render command;
Render -r mr myscene.mb
Render -r Arnold myscene.mb
Render -r vray myscene.mb
lets you switch between renderers with quite the ease. You can almost copy
paste render command between them and render separate layers with separate
renderers
{rendering a beauty pass in Arnold and occlusion in mental ray for example}
Render -r arnold -rl beauty myscene.mb
Render -r mr -rl occlusion myscene.mb
The most notable thing between them they all have a -v (verbosity) flag but
Arnold removed it for some reason, and there is weird syntax in getting multi
channel exr files stated, you need to encapsulate the renderer definition in
brackets.
Render -r vray -v 5 -rl diffuse -of “exr (multi)” myscene.mb
Have fun, it gets really interesting even on a single machine, tip; keep an
eye on your actual processing meter and determine how many you can start
without stalling your machine, then look into mental ray satellite and the vray
distributed renderer for a super easy setup to get additional render power from
any free CPU around you, even an old £10 laptop if left unused will aid in your
workspace renders by chipping in on processing a pixel or 2, if you are in a
production environment that means every computer with the screensaver turned on
could potentially be cutting half your render time down through an additional
CPU pool. :)
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