Merging caches in a command line script ?

[Julien BOLBACH]

Hi,

Is there a way to merge multiple caches in a command line script ?
I'm trying to find the best optimized way of pre-caching GI on a renderfarm, and I would like to avoid to have only one machine precalculting the GI for all the frames (using mutliframe incremental).
If you have any advice on how to handle this kind of scenario, that would be greatly appreciated.

Thanks a lot,

Julien

[bigbossfr]

Hi,

Is there a way to merge multiple caches in a command line script ?
I'm trying to find the best optimized way of pre-caching GI on a renderfarm, and I would like to avoid to have only one machine precalculting the GI for all the frames (using mutliframe incremental).
If you have any advice on how to handle this kind of scenario, that would be greatly appreciated.

Thanks a lot,

Julien

Hi,
From my memory : http://help.chaosgroup.com/vray/help...imapviewer.htm
Use imapviewer -help to see all commands.

[Julien BOLBACH]

Thanks, that's exactly what I was looking for !

One little question though, if I want to render out all my GI caches separately on different computers, do I have a control over the name of the cache saved out ? Can I add some parameter like myGIcache.<frame>.vrmap to render it out with the same vrScene or do I have to create a vrscene per frame using an absolute path (which is obviously longer to process)?

Thanks,

Julien

[bigbossfr]

Thanks, that's exactly what I was looking for !

One little question though, if I want to render out all my GI caches separately on different computers, do I have a control over the name of the cache saved out ? Can I add some parameter like myGIcache.<frame>.vrmap to render it out with the same vrScene or do I have to create a vrscene per frame using an absolute path (which is obviously longer to process)?

Thanks,

Julien

It depends of what do you want to do.
It is static objects ?
Camera moving on static objects ?

Explain what do you want to do because there is a lot "modes" to save GI maps.

[Julien BOLBACH]

It's for fly-throughs of static objects.

So my idea is :
- Rendering out GI caches every Nth frame on different comput
- Merging all the caches into one
- rendering the final frames using the merged cache

Let me know if there is another way of doing the same thing !

Thanks,

Julien

[bigbossfr]

It's for fly-throughs of static objects.

So my idea is :
- Rendering out GI caches every Nth frame on different comput
- Merging all the caches into one
- rendering the final frames using the merged cache

Let me know if there is another way of doing the same thing !

Thanks,

Julien

Just use "Multiframe incremental" mode or "Incremental add to current map" in irradiance map, nothing more (no need to merge or something like this).

Multiframe incremental - this mode is useful when rendering a sequence of frames (not necessarily consecutive) where only the camera moves around (so-called fly-through animations).

Incremental add to current map - in this mode V-Ray will use the irradiance map that is already in memory and will only refine it in places that don't have enough detail. This mode is useful when compiling an irradiance map to render multiple views of a static scene or a fly-through animation.

http://help.chaosgroup.com/vray/help...vancedimap.htm

[vlado]

One little question though, if I want to render out all my GI caches separately on different computers, do I have a control over the name of the cache saved out ? Can I add some parameter like myGIcache.<frame>.vrmap to render it out with the same vrScene or do I have to create a vrscene per frame using an absolute path (which is obviously longer to process)?

In the latest nightlies you can use the %04d format in the irradiance map auto-save file name.

Best regards,
Vlado