Feedback

What's your question?

By: Asked

what is vray like from a rman users pov?

Hi all, I'm currently a little curious about vray - saw some postings about the maya 2.0 release and it seems like they're looking to push in to typical renderman territory.

So the question is - for any one who's got experience of both, what are the similarities and differences, in terms of the user workflow for vfx?

e.g. How does shader writing compare?

Does vray have a standalone renderer? Does it use some RIB scene description equivalent?

Are there all the hooks and tools a TD might want for going 'off piste' ?

I see mention of an sdk - what are it's capabilities? Dynamic load type geometry procedurals?

Is there anything like the AOV framework?

Does vray make as much use of prepasses/caching as renderman type renders do?

Anything else?

cheers

Add comment viewed 364 times Latest activity 11 months ago

or Cancel

1 answer

  • 1

bento

So, I've managed to root out a few answers using a bit of old fashioned looking..


  • Does vray have a standalone renderer? Does it use some RIB scene description equivalent?

Yes and yes.

Installing the "vray for maya" demo from the chaosgroup website (register and login to get access) helped with this one.

From here I found vray which is a simple wrapper for vray.exe - more commonly called 'vray standalone'. Default install places it within your maya installation, rather than as a sep. application.

i.e.

/usr/autodesk/maya2008/vray/bin/vray.exe

here's an example command as reference

vray -sceneFile=/tmp/cornellBox/cornellbox_scene.vrscene -verboseLevel=3 -frames= 1 -imgFile=/tmp/render_Camera.exr -display=0 -autoclose=0

Scene description is in the .vrscene format. Not been able to find any documentation on the format - here's an cornell box example:

vrscene.tar.gz


  • How does shader writing compare? I see mention of an sdk - what are it's capabilities? Dynamic load type geometry procedurals?

Not been able to find any publicly available detailed info on the sdk (beyond mentions on chaosgroup site). As far as I'm aware shader writing is in c++. Any more info here most appreciated


  • Is there anything like the AOV framework?

You certainly can render multiple shading components out as one render

http://www.spot3d.com/vray/help/maya/150R1/examples_renderelements.htm

Not sure if these are builtins defined by renderer or conventions defined by standard shaders...?


There doesn't seem to be masses of info about, so if there is anyone with good experiences - maybe someone from DD :) - feel free to add!

cheers

NN comments
michalf
-

thanks bento ! some interesting info. I’m also interested in vRay capabilities as a 3delight guy

or Cancel