Pre-Render Script over network - Working method!

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For my specific reason I needed to send a render of a selected object. I've been trying unsuccessfully to send a job to render over the network using the "setRenderType #selected" active to render a selected item only.
(in combination with VRay's "renderers.current.imageSampler_renderMask_type = 2")

Problem is - once it gets to the network, my object is no longer selected.

So I delved into the Pre-Render script. However, even though I managed to create a small single-line script that selects my object and set it to run before the render (pre-render) - Max would constantly ignore it:

preRendScript = @"\\server\PreRender_selectNet.ms"
usePreRendScript = true

It would always come up saying that it cannot render because no object is selected. It was trying to render in "selected" mode before actually making a selection.

So I tried using a preRender callbacks script:

callbacks.removescripts id:#net_select
txt = "for n in objects do if matchpattern n.name pattern:\"Net*\" == true do select n\n"
callbacks.addscript #preRender txt id:#net_select

That too failed to start before the render.

So - here's the solution:
Use a callbacks that would call a script when the file opens instead of before it renders. This method did the job:

callbacks.removescripts id:#net_select
txt = "for n in objects do if matchpattern n.name pattern:\"Net*\" == true do select n\n"
callbacks.addScript #filePostOpen txt id:#net_select persistent:true

Now I can properly run Pre-Render scripts that would be embedded in the file and would be distributed with the file over a network render farm and run properly.

Enjoy.

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hummus's picture

Seeing this only two years later

Sorry - for some reason I wasn't notified about this message. Seeing this only two years later.
As to your question - read about callbacks. It enables you to add scripts into the files that can then be accessed in different ways - when the file opens, closes, renders, etc.

Dariusz's picture

Script location

Hey

Where in the scene did you put that script that it remained in the file?

Regards
Dariusz

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