Regression: GPU Compositor 2d stabilization is bugged in 4.1 #113864

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opened 2023-10-17 21:56:08 +02:00 by Lucas · 6 comments

Lucas commented

2023-10-17 21:56:08 +02:00

System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 537.42

Blender Version
Broken: version: 4.1.0 Alpha, branch: main, commit date: 2023-10-16 20:26, hash: f20e38d42216
Worked: 4.0.0 Beta from 10/10/23

Short description of error
GPU Compositor 2d stabilization doesn't display properly when rotation stabilization is enabled.
Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]
Open provided blend file.
Enable and disable Rotation in the stabilize tab to see the difference. This file works properly in 4.0.
*It renders correctly, just the display stabilization is bugged

**System Information** Operating system: Windows-10-10.0.19045-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 537.42 **Blender Version** Broken: version: 4.1.0 Alpha, branch: main, commit date: 2023-10-16 20:26, hash: `f20e38d42216` Worked: 4.0.0 Beta from 10/10/23 **Short description of error** GPU Compositor 2d stabilization doesn't display properly when rotation stabilization is enabled. **Exact steps for others to reproduce the error** [Please describe the exact steps needed to reproduce the issue] [Based on the default startup or an attached .blend file (as simple as possible)] Open provided blend file. Enable and disable Rotation in the stabilize tab to see the difference. This file works properly in 4.0. *It renders correctly, just the display stabilization is bugged

GPUCompositor.zip

1.0 MiB

155 KiB

Lucas added the

labels 2023-10-17 21:56:09 +02:00

Pratik Borhade commented

2023-10-18 05:59:47 +02:00

Member

Hi, thanks for the report. Can indeed confirm the difference.
cc @OmarEmaraDev

Hi, thanks for the report. Can indeed confirm the difference. cc @OmarEmaraDev

Pratik Borhade added

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labels 2023-10-18 06:00:05 +02:00

Omar Emara commented

2023-10-18 09:11:12 +02:00

Member

This is most likely not a bug. The behavior of transformations was changed in #112332. In that change, rotations are now realized at the point of the stabilize node, so the size of the image changes due to the expansion resulted from rotation, which is in-turn taken into account at the Scale node.

I am not sure what you really need, but I suspect the correct setup is to simply change the order of the nodes such that the scale happens first.

This is most likely not a bug. The behavior of transformations was changed in #112332. In that change, rotations are now realized at the point of the stabilize node, so the size of the image changes due to the expansion resulted from rotation, which is in-turn taken into account at the Scale node. I am not sure what you really need, but I suspect the correct setup is to simply change the order of the nodes such that the scale happens first. ![](https://projects.blender.org/attachments/b0098529-64ae-4e5f-8310-bfb8a8a100be)

20231018-100949.png

105 KiB

Omar Emara added

and removed

labels 2023-10-18 09:12:47 +02:00

Lucas commented

2023-10-18 09:49:49 +02:00

Author

@OmarEmaraDev I changed the order and still the same bad behavior.. It looks like the rotation stabilization enabled causes translation of the image. If you disable it looks correct.

@OmarEmaraDev I changed the order and still the same bad behavior.![image](/attachments/914c934c-07ce-4526-89ac-a626c623f7e0). It looks like the rotation stabilization enabled causes translation of the image. If you disable it looks correct.

246 KiB

Lucas commented

2023-10-18 10:17:01 +02:00

Author

Just downloaded the newest alpha just in case and same problem, rotation enabled causes destabilization

Just downloaded the newest alpha just in case and same problem, rotation enabled causes destabilization ![image](/attachments/370c4bca-c161-4bb5-8d03-1f3de7d29f62)

15 KiB

Omar Emara self-assigned this 2023-10-18 10:24:04 +02:00

Omar Emara added

Needs Info from Developers

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labels 2023-10-18 10:24:51 +02:00

Omar Emara commented

2023-10-18 10:25:42 +02:00

Member

I will take a closer look, maybe the issue is that rotation happens in global space while we expect it to happen in local space.

I will take a closer look, maybe the issue is that rotation happens in global space while we expect it to happen in local space.

Lucas commented

2023-10-18 10:35:20 +02:00

Author

Made a video just in case

Made a video just in case

2023-10-18 01-31-47.mp4

2.8 MiB

Omar Emara referenced this issue from a commit

2023-10-25 15:31:35 +02:00

Fix #113864: Compositor translation is doubled

Omar Emara closed this issue

2023-10-25 15:31:36 +02:00

Blender Bot added

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Needs Info from Developers

labels 2023-10-25 15:31:38 +02:00

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