EEVEE image sequence not updating in animation render #63867

New Issue

ali · 2019-04-24T21:10:02+02:00

ali commented

2019-04-24 21:10:02 +02:00

System Information
Operating system: ubuntu 18.04 lts 64 bit
Graphics card: nvidia geforce gt 840 (in this video i turned it off and used CPU graphics because of power saving)

Blender Version
Broken: blender-2.80-72ede30d0f97-linux-glibc224-x86_64

Problem to render every frames in animation in eevee

There is a problem that eevee doesnt render every frames and make mistakes. here is a VERY SHORT video to explain problem. Thankkss
EEVEE bug.mp4

System Information Operating system: ubuntu 18.04 lts 64 bit Graphics card: nvidia geforce gt 840 (in this video i turned it off and used CPU graphics because of power saving) Blender Version Broken: blender-2.80-72ede30d0f97-linux-glibc224-x86_64 **Problem to render every frames in animation in eevee** **There is a problem that eevee doesnt render every frames and make mistakes. here is a VERY SHORT video to explain problem. Thankkss** [EEVEE bug.mp4](https://archive.blender.org/developer/F6973310/EEVEE_bug.mp4)

ali commented

2019-04-24 21:10:02 +02:00

Added subscriber: @ali-5

blender-admin commented

2019-04-24 21:10:02 +02:00

#63808 was marked as duplicate of this issue

Jacques Lucke commented

2019-04-25 14:40:20 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-04-25 14:40:20 +02:00

Can you upload the .blend file and the video, so that we can reproduce the issue?

ali commented

2019-04-25 15:34:03 +02:00

@JacquesLucke Ow excuse me that's here. :) Blend & 3frames.mp4.zip

@JacquesLucke Ow excuse me that's here. :) [Blend & 3frames.mp4.zip](https://archive.blender.org/developer/F6975884/Blend___3frames.mp4.zip)

Clément Foucault was assigned by Jacques Lucke

2019-04-25 16:00:07 +02:00

Jacques Lucke commented

2019-04-25 16:00:07 +02:00

A shorter video that shows the issue:
2019-04-25 15-57-15.flv

Left are the rendered frames, right is in Blender.

A shorter video that shows the issue: [2019-04-25 15-57-15.flv](https://archive.blender.org/developer/F6975934/2019-04-25_15-57-15.flv) Left are the rendered frames, right is in Blender.

Clément Foucault removed their assignment 2019-04-25 22:41:33 +02:00

Brecht Van Lommel was assigned by Clément Foucault

2019-04-25 22:41:33 +02:00

Clément Foucault commented

2019-04-25 22:41:33 +02:00

Added subscribers: @brecht, @fclem

Clément Foucault commented

2019-04-25 22:41:33 +02:00

This is a depsgraph / iuser problem.

image_user_id_eval_animation works OK for the viewport but when rendering, it seems that iuser->framenr stays the same.

As the iuser pointer keep changing between rendered frame I suspect that there is COW happening somewhere and it's not setting IMA_GPU_REFRESH as it should to ensure the correct image sequence frame.

That said this solution is still a bit hacky. @brecht since you were the one who introduce the patch to support the image sequence I'll leave it to you.

This is a depsgraph / iuser problem. image_user_id_eval_animation works OK for the viewport but when rendering, it seems that iuser->framenr stays the same. As the iuser pointer keep changing between rendered frame I suspect that there is COW happening somewhere and it's not setting IMA_GPU_REFRESH as it should to ensure the correct image sequence frame. That said this solution is still a bit hacky. @brecht since you were the one who introduce the patch to support the image sequence I'll leave it to you.

Brecht Van Lommel changed title from ~~EEVEE doesnt render every frames in animation !!~~ to EEVEE image sequence not updating in animation render

2019-05-09 03:02:27 +02:00

Brecht Van Lommel commented

2019-05-09 03:02:40 +02:00

Added subscribers: @Casey-3, @ZedDB, @StephenSwaney

Brecht Van Lommel commented

2019-06-05 16:37:49 +02:00

I'm having trouble reproducing this with both latest master and 72ede30d0f. Is this still an issue?

I guess it might be some threading issue, between viewport and render redraws sharing the same image buffer. Not sure. We definitely know the sharing of the image buffer is weak, and could try to ensure there is a separate buffer for render and viewport, even if a more general image cache would be too much work now.

I'm having trouble reproducing this with both latest master and 72ede30d0f. Is this still an issue? I guess it might be some threading issue, between viewport and render redraws sharing the same image buffer. Not sure. We definitely know the sharing of the image buffer is weak, and could try to ensure there is a separate buffer for render and viewport, even if a more general image cache would be too much work now.

Jacques Lucke commented

2019-06-05 16:51:22 +02:00

I'm still able to reproduce the issue.