Appleseed interactive render - transformation distorted after Blender 2.82a release #78502

New Issue

Leonard Siebeneicher · 2020-07-01T17:23:04+02:00

2020-07-01 17:23:04 +02:00

System Information
Operating system: Linux-5.4.0-39-generic-x86_64-with-debian-bullseye-sid 64 Bits
Blenderseed on Linux and Windows affected.

Graphics card: GeForce RTX 2060 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-30 20:02, hash: a3e6b7c2ce
(All Blender releases since 2.82a are affected.)
Worked: Blender 2.82a

Short description of error
Blenderseed addon interactive rendering did work with Blender 2.82a. Using newer Blender releases, same Blenderseed addon shows odd transformations in interactive rendering.

Exact steps for others to reproduce the error
Use recent 'blenderseed' addon. (currently, windows-only).

Load this scene …
appleseeed_cube.blend
… or use default cupe with render engine set to appleseed.

Switch to interactive render mode. Switch to Solid render mode. Switch back to interactive render mode. Suddenly, interactive rendering shows distorted transformations.

Here you can see bug in action …
as_bug.mp4

Same Blenderseed addon does work fine with Blender 2.82a. In Blender support chat, someone told me to send this Bug report.

This bug is registered for Blenderseed.
https://github.com/appleseedhq/blenderseed/issues/519

**System Information** Operating system: Linux-5.4.0-39-generic-x86_64-with-debian-bullseye-sid 64 Bits Blenderseed on Linux and Windows affected. Graphics card: GeForce RTX 2060 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100 **Blender Version** Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-30 20:02, hash: `a3e6b7c2ce` (All Blender releases since 2.82a are affected.) Worked: Blender 2.82a **Short description of error** Blenderseed addon interactive rendering did work with Blender 2.82a. Using newer Blender releases, same Blenderseed addon shows odd transformations in interactive rendering. **Exact steps for others to reproduce the error** Use recent 'blenderseed' addon. (currently, windows-only). Load this scene … [appleseeed_cube.blend](https://archive.blender.org/developer/F8657213/appleseeed_cube.blend) … or use default cupe with render engine set to appleseed. Switch to interactive render mode. Switch to Solid render mode. Switch back to interactive render mode. Suddenly, interactive rendering shows distorted transformations. Here you can see bug in action … [as_bug.mp4](https://archive.blender.org/developer/F8657218/as_bug.mp4) Same Blenderseed addon does work fine with Blender 2.82a. In Blender support chat, someone told me to send this Bug report. This bug is registered for Blenderseed. https://github.com/appleseedhq/blenderseed/issues/519

Leonard Siebeneicher commented

2020-07-01 17:23:04 +02:00

Added subscriber: @siebeneicher

Pedro A. commented

2020-07-01 20:29:40 +02:00

Added subscriber: @povmaniac

Pedro A. commented

2020-07-01 20:29:40 +02:00

I think is not a bug... seems a fault in your viewport quad + zoom + aspect ratio code.

Leonard Siebeneicher commented

2020-07-02 01:01:05 +02:00

Hi Pedro,

I am no Blenderseed dev.

Blenderseed addon works flawlessly with Blender 2.82a.

I like to understand why same addon (installed from same zip file) does show this behaviour on more recent Blender releases.

It appears to me that something changed on Blender since 2.82a which does break Blenderseed preview.

Hi Pedro, I am no Blenderseed dev. Blenderseed addon works flawlessly with Blender 2.82a. I like to understand why same addon (installed from same zip file) does show this behaviour on more recent Blender releases. It appears to me that something changed on Blender since 2.82a which does break Blenderseed preview.

Richard Antalik commented

2020-07-02 04:35:09 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-07-02 04:35:09 +02:00

Changed status from 'Needs Triage' to: 'Archived'

Richard Antalik closed this issue

2020-07-02 04:35:09 +02:00

Richard Antalik self-assigned this 2020-07-02 04:35:09 +02:00

Richard Antalik commented

2020-07-02 04:35:09 +02:00

Thanks for report, but unfortunately we don't have resources to study functionality of 3rd party addons.

If you could point exactly to where problem is and make simple python script we would be able to accept this report.

Since you already reported this on blenderseed tracker, we will wait on their report to us if there is bug on our side

Thanks for report, but unfortunately we don't have resources to study functionality of 3rd party addons. If you could point exactly to where problem is and make simple python script we would be able to accept this report. Since you already reported this on blenderseed tracker, we will wait on their report to us if there is bug on our side

Leonard Siebeneicher commented

2020-07-05 12:56:44 +02:00

In Blender python shell, we could create an y-up transformation matrix …

> m = Matrix([[1,0,0],[0,0,-1], [0,1,0]])
> m

Matrix(((1.0, 0.0, 0.0),
        (0.0, 0.0, -1.0),
        (0.0, 1.0, 0.0)))

Now, we chain y-up transformations

> m @ m

Matrix(((1.0, 0.0, 0.0),
        (0.0, -1.0, 0.0),
        (0.0, 0.0, -1.0)))

This matrix matches how Blenderseeds interactive view transformation behaves. Y- and Z-Axis gets mirrored.

Is it possible, that there was a change from Blender 2.82a to Blender 2.83+, in the sense that more recent Blender does y-up transformation itself?

In Blender python shell, we could create an y-up transformation matrix … ``` > m = Matrix([[1,0,0],[0,0,-1], [0,1,0]]) > m Matrix(((1.0, 0.0, 0.0), (0.0, 0.0, -1.0), (0.0, 1.0, 0.0))) ``` Now, we chain y-up transformations ``` > m @ m Matrix(((1.0, 0.0, 0.0), (0.0, -1.0, 0.0), (0.0, 0.0, -1.0))) ``` This matrix matches how Blenderseeds interactive view transformation behaves. Y- and Z-Axis gets mirrored. Is it possible, that there was a change from Blender 2.82a to Blender 2.83+, in the sense that more recent Blender does y-up transformation itself?

Jonathan Dent commented

2020-07-09 20:58:22 +02:00

Added subscriber: @jdent02

Jonathan Dent commented

2020-07-09 20:58:22 +02:00

Hi, I'm the primary developer for blenderseed.

After some further exploration we think the issue is on our side with our callback method for interactive rendering. Has anything changed under the hood with OpenGL from 2.82 to 2.83?

Hi, I'm the primary developer for blenderseed. After some further exploration we think the issue is on our side with our callback method for interactive rendering. Has anything changed under the hood with OpenGL from 2.82 to 2.83?

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Appleseed interactive render - transformation distorted after Blender 2.82a release #78502