Image not rendered on disk

Thu Jul 23, 2020 9:31 am

When I try to render this scene the water is not rendered on disk, it' ok on IPR but nothing on disk, like in this screenshot :/

Any idea ?
Thanks

Here is my scene https://www.dropbox.com/t/ydC6x3XSZ0UDLJdb

Thu Jul 23, 2020 2:29 pm

Hmm, this is really weird. Here your scene can be rendered without problems. Are you sure that you have the right cache files for all the frames?

Thanks,
-Juanjo

Thu Jul 23, 2020 2:32 pm

juanjgon wrote:Hmm, this is really weird. Here your scene can be rendered without problems. Are you sure that you have the right cache files for all the frames?

Thanks,
-Juanjo

Yep but I've found something if I deactivate motion blur it renders on disk, it's weird indeed
Thanks

Thu Jul 23, 2020 2:44 pm

Yes, it is weird. Here it works fine in any case, although in your scene you don't have the deformations motion blur enabled. The objects has the "v" velocity attribute, so the MB should not be a problem.

Do you have this problem in any frame?

Thanks,
-Juanjo

Thu Jul 23, 2020 2:54 pm

juanjgon wrote:Yes, it is weird. Here it works fine in any case, although in your scene you don't have the deformations motion blur enabled. The objects has the "v" velocity attribute, so the MB should not be a problem.

Do you have this problem in any frame?

Thanks,
-Juanjo

Yes all the frames

Thu Jul 23, 2020 4:42 pm

Hmm, the filecache fails for the first frame, not sure why. Perhaps this is the problem, if the object is not available in the first frame it can't be updated so it is missing in all the other frames. Have you tried to start the rendering to disk from the frame 2?

Thanks,
-Juanjo

Thu Jul 23, 2020 5:15 pm

juanjgon wrote:Hmm, the filecache fails for the first frame, not sure why. Perhaps this is the problem, if the object is not available in the first frame it can't be updated so it is missing in all the other frames. Have you tried to start the rendering to disk from the frame 2?

Thanks,
-Juanjo

Yes you're right if I start on frame 2 it works ??? I don't understand ???
So gonna start on frame 2 thanks for your help Juanjgon

David

Thu Jul 23, 2020 5:26 pm

I'm not sure why this happens, but in any case this is an issue on the Houdini side. Here using your scene there is no object in the frame 1, reporting the filecache SOP the error that you can see in the attached image. If you were rendering the scene if "full scene reload" mode, this could not be a problem, but in update mode, if the object is not available in the first frame, it can't be updated.

Thanks,
-Juanjo