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View Full Version : Set Driven Key Attributes fail with Vray (or mental ray)

WesleyChandler
04-12-2012, 12:32 AM
Hey everyone,

Has anyone had the problem where if you 'set driven key' an attribute (such as the alpha gain of a layered texture shader to control which texture shows up) works in the viewport but it doesn't work when you render in Vray?

I also found a similar problem when using Mental Ray (exept in mental ray it shows up only during a batch render)
http://forums.cgsociety.org/archive/index.php/t-219695.html

Any other better solution than to bake the attribute down?


Thanks,
Wesley
tharrell
04-12-2012, 02:44 PM
How are you rendering out... via MayaBatch, or baking out .vrscene chunks and sending them to standalone?

I've noticed similar problems in the past, and at one point made certain I was exporting single frame chunks and made a pre-frame MEL script that did currentTime = $frame to work around it by updating the play head and forcing attr updates.

Haven't noticed the problem in a while, however.

--T
WesleyChandler
04-12-2012, 04:38 PM
Hey Trey,

Thank you for your response! I have been testing with "Render the Current Frame" with the Render View which already has the problem. I've also tested with Maya's 'Batch Render' and its also the same problem.

I haven't tried baking out .vrscene chunks (because I don't know how to, lol). Unfortunately, I'm an Animator by profession, so scripting isn't my forte.. but I'll look into that! =)

- Wesley
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04-12-2012, 04:38 PM
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