[HOU-1836] Vray Texture Bake issue - baking UDIMs

[david.anastacio]

Hello, I'm having an issue with the texture baking tool when trying to output UV Tiles (UDIMs).
When enabling the "Render to texture tile" option I get no output and the VFB doesn't even start when baking.

I also had this behavior with the test scene, if I checked texture tiles I stopped having output,test sche from here:https://forums.chaosgroup.com/forum/...ol-now-in-beta

Log shows the render as sucsessfull on my simple test scene:


My simple test scene is attached for you to test.

best,
David.

[david.anastacio]

Small update.

The TOPs network seems to be throwing errors when trying to bake the texture tiles, see attached image.

Running Houdini 18.0.348 with VFH 4.30.03, nightly build:6984 from 24 April on Windows 10.

Best,
David.

[chakarov]

Hello david.anastacio , when baking to texture tiles baker tool uses TOPs and the VFB is not visible, everything happens in background. I'll take a look at your scene to check what is going on. Thanks for the feedback.

[chakarov]

Hello david.anastacio , sorry for not writing back earlier. I've just opened your scene and hit "execute baking" - everything is working on my side. As I wrote in my other post, when baking to texture tiles or multigeo mode, TOPs are used that's why the VFB is not visible. But the log is printing every progress. The log from your last baking is also saved in the file and it says that everything is OK. I've tested with your setup W10; H18.0.348; V-Ray 24april. On my side TOPs does not throwing any errors and rendered images are where they should be.

[chakarov]

Could you try changing Cache Mode of ROP Fetch TOP to "Write Files" and try again.

[david.anastacio]

Hi again.

I noticed the VFB is not supposed to be visible, but that is not the issue here. I always get the TOPS error "finished with exit code 1", and no output is written to disk.
What could be causing this? I tried with a new baker with default settings, same result. Different mesh same result. The output folder doesn't even get created.
The baker log seems like everything worked out, but not really.

See attached.

Best,
David.

[david.anastacio]

I just tried changing the cache from auto to write, still no success.

See attached.

Best,
David.

[chakarov]

We are still trying to reproduce the problem on our side.

[chakarov]

Could you go to debug tab and uncheck "PDG Logs in Houdini Temp" and execute baking again. pdgtemp folder should be created in your hip file directory, one of it's subdirectories is called logs, can you send me those log files there.

[david.anastacio]

Here they are, Pipeline was fetching the latest nightly. So this was already last night's update.

Best,
David.

[chakarov]

Looks like V-Ray is not recognized/found when baking with TOPs. How your setup loads the VFH, are you using some kind of custom scripts, bat files or something.

[mB0rt]

Hi Chakarov,
We are using REZ to setup Vray on your pipeline and current vray env vars setup is something like this:

```
env.VRAY_APPSDK.set("{root}/appsdk")
env.VRAY_OSL_PATH.set("{root}/appsdk/bin")
env.VRAY_UI_DS_PATH.set("{root}/ui")

env.VFH_HOME.append("{root}/vfh_home")

env.PYTHONPATH.append("{root}/appsdk/python27")
env.PATH.prepend("{root}/appsdk/bin")
env.PATH.prepend("{root}/vfh_home/bin")
env.HOUDINI_PATH.prepend("{root}/vfh_home")

env.HOUDINI13_VOLUME_COMPATIBILITY.set('1')
env.HDF5_DISABLE_VERSION_CHECK.set('1')
```
Where {root} is vray for houdini default zip content from nightlies build.
Let me know if something is missing,
Thanks.

[david.anastacio]

What mr. Bort said, he's the VFX head of Pipeline here at Mackevision.
All other VRay features are working correctly, render, shelf, IPR, SOP and OBJ nodes are loaded and running, and no error in the Houdini console when starting.

Best,
David.

[chakarov]

TOPs are using hyton and seems that those V-Ray specific environments are not load when render is started. I've added the issue in our system as HOU-1836 and will write back to you when there is something new.

[david.anastacio]

Thanks chakarov, looking forward to get an update on this.

best,
David.