override motion blur samples on vray proxy

[ilpvfx]

Hi,

We output Vrmeshes directly from naiad when we simulate. This is a great workflow as it enables us to output arbitrary data from the simulation into color sets witch we can the use for shading purposes, the only issue is that we can't get motion blur to work without outputting all the frames into the same vrmesh file. It would be helpfull to our workflow if we could instead have one file per frame.

I have triad using vrayobjectproperties to override the motion blur samples, but it does not work. is there any other way?


/Eric

[kweechy]

The VROP override will simply take more geometry samples over a time, but if the geo isn't moving in the first place then naturally it's not going to do much.

It sounds like your problem is that the polygon vector data isn't being written when you mesh from Naiad in single frames, vertices are frozen in place for the entire animation. We have the same problem at our studio when blasting out OBJ sequences to use in Nuke as projection objects. Now the difference of course is that I don't think OBJs can ever store vector information while a vrmesh can, so it's really just a matter of seeing why Naiad isn't writing that out when doing single frame meshes.

Have you tried doing meshes in bundles of 2 for example to see what happens? Cause if that works then perhaps the answer is to bundle in sizes of 1.001 frames to force it to include the data from 0-1...just a thought. I've never worked with what you're describing so I have no idea if anything I suggested will work out.

[ilpvfx]

We output the velocitys in the vrmesh and if we output a vrscene and manually set the nsamples to 2 it works. so it's basically a maya scene translation issue.

Thanks for the suggestions you made me dubble check

/eric

[t.petrov]

ilpvfx:
Can you give us a simple scene, so we can see what is going on?
If you can upload it on the forum, you can send it to vraymaya@chaosgroup.com

/Teodor

[vlado]

Which build of V-Ray are you using? I think we have fixed the missing motion blur when using separate vrmesh files.

Best regards,
Vlado

[ilpvfx]

Hi Vlado and Teodor,

We are using :
[2011/Sep/26|09:52:47] V-Ray: V-Ray for Maya version 2.00.04 from Apr 28 2011, 02:23:27
[2011/Sep/26|09:52:47] V-Ray: V-Ray core version is 2.00.01

I will try a later version and if that does not work, setup a package for you so you can try

Best regards
Eric

/Eric

[ilpvfx]

dho!,

it seams we do not have access to the nightly builds, I only get to a blank page with your logo, could this be fixed?

/Eric

[t.petrov]

Yes, send an email to our support at vraymaya@chaosgroup.com

/Teodoor

[ilpvfx]

Triad versions :

vray_adv_21501_maya2011_linux_x64.exe
vray_adv_20004_maya2011_linux_x64.exe

but without any difference, also sent you a test scene.

Best regards
Eric

[vlado]

Thanks, will look at the scene.

Best regards,
Vlado

[ilpvfx]

No need Vlado,

Turns out it was me being silly, I did know of the syntax .%04d in the filename attribute. I was driving the filename with a node.

Sorry about the confusion. It does indeed work

/Eric

[vlado]

Ah. Very well then

Best regards,
Vlado