RealFlow Official Forum

Hello,

I seem to be unable to figure out how to properly batch render a cloud object.

When I render a single frame from within maya's renderview. the result looks proper, no issues.

When submitting this same scene as a batch render it results in only rendering a portion of the render.
(it looks like the content is only rendered within a 1x1x1 bounding box)

So how can I force batch to recognize the full bounding box size of the vdb files ?

side note: I do see one error in script
"failed to create a temporary copy of path-to-my-vdb-file(s) for delayed loading (IoError: failed to open temporary file \shpc.); will read directly from path-to-my-vdb-file(s) instead

side note: using MtoA as renderer

Thanks much !

Hey,

Do you have a simple scene with that problem?. It would be great to take a look at it

luisM.

Hey LuisMiguel,

The scene I am currently using is a bit heavy. I'll see if I can make a smaller test scene to show this issue.

fyi side note:
The error I decsribed seeing in maya script most likely is similar to what this link is talking about
https://forums.thinkboxsoftware.com/vie ... 2413b32c4a
(which is weird for me, because I have admin privileges on the machine I am using RF on)

second side note:
Is it normal that using the rfrk openvdb hybrido mesher does not display the mesh in maya viewport, but the regular hybdrido mesher does ?

Since I have you here now let me ask another question
How can I get access to the curvature/splashity data from an rpc/bin/prt particle file to use as data to e.g. change color value in an Arnold standard shader.
The route I use to do so for velocity works like a charm ("datacolor" to "vectorlenght magnitude" to "remap"), but that's likely because the velocity channel is already prestored in the particles, but curvature can only be calculated after meshing or do I need to calculate the particle normals for this channel to show up ?
Or should I attempt to graph it somehow in RF to a uv channel ?

Hey LuisM,

Let me clarify my additional question a bit better:

- basically I can easily use the velocity channel to color the openvdb mesh generated by the rfrk, buy calling the velocity channel in a aiuserdatacolor node.

- what I seem to be unable to get working is calling the curvature and/or splashity channel to color the openvdb mesh. I tried a few ways and I do not seem to get any data to use.

- what I am ultimately looking for is to be able to color the mesh based on the splashes/foam emission I can predict/display in realflow.

Hey LuisM,

After a bit more testing this is what I found:

- (bug?) rfrk cloud issue still persists, still think it has to do with the "cannot write delayed temp file"

- (bug?) rfrk openvdb mesher and openvdb hybrido mesher does not calculate curvature/splashity/weights, however rfrk standard hybrid mesher does calculate curvature/splashity/weights

- (limitation?) when setting motionblur to use more then 2 frames (Arnold), rfrk tends to error out on random frames and stop rendering, which does not surprise me as that is a lot of memory to hold multiple frames of meshes, although looking at memory usage it does not seem to indicate as such. but yeah...Maya.....

Hey,

thanks for testing. We're going to check in depth what is happening here. I'll let you know.

luisM.

Hey LuisM,

I made a Maya scene with an extraction of the vdb mist layer for your testing purposes.

Do you have an ftp/dropbox type I can post towards for you ?

Thanks !

Any news ?

Hi,

no yet. Waiting answer for plugin developer. I'll let you know.

luisM.