Image/Reference Background Opacity #90583

New Issue

Luciano · 2021-08-10T17:14:05+02:00

Luciano commented

2021-08-10 17:14:05 +02:00

System Information
Operating system: Linux-5.11.0-7620-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: Mesa Intel(R) HD Graphics 520 (SKL GT2) Intel 4.6 (Core Profile) Mesa 21.0.1

Blender Version
Broken: version: 2.93.2, branch: master, commit date: 2021-08-03 05:58, hash: 1eb06de260
Worked: (newest version of Blender that worked as expected)

When I add a reference or an image (for pathtracing a blueprint) and play with the opacity, the opacity is broken, it goes through a boolean process instead of a float). In few words, play with the opacity of a reference image.

Blender 2.93.2 version.

**System Information** Operating system: Linux-5.11.0-7620-generic-x86_64-with-glibc2.31 64 Bits Graphics card: Mesa Intel(R) HD Graphics 520 (SKL GT2) Intel 4.6 (Core Profile) Mesa 21.0.1 **Blender Version** Broken: version: 2.93.2, branch: master, commit date: 2021-08-03 05:58, hash: `1eb06de260` Worked: (newest version of Blender that worked as expected) When I add a reference or an image (for pathtracing a blueprint) and play with the opacity, the opacity is broken, it goes through a boolean process instead of a float). In few words, play with the opacity of a reference image. Blender 2.93.2 version.

Luciano commented

2021-08-10 17:14:05 +02:00

Added subscriber: @Luciano

Pratik Borhade commented

2021-08-11 08:53:00 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-08-11 08:53:00 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Pratik Borhade commented

2021-08-11 08:53:00 +02:00

Can not reproduce this on 2.93.3 fb7510087f. Can you recreate the issue on older versions?

From present information I followed these steps to verify the issue:

Add Image ({key Shift A} -> Reference)
Change the opacity of image from Object data properties tab

Please confirm if issue also happens with factory default settings?

Can not reproduce this on 2.93.3 `fb7510087f`. Can you recreate the issue on older versions? From present information I followed these steps to verify the issue: - Add Image ({key Shift A} -> Reference) - Change the opacity of image from `Object data properties tab` Please confirm if issue also happens with factory default settings?

Luciano commented

2021-08-11 15:37:40 +02:00

Hi,

It's not in version 2.93.3, but in version 2.93.2
Yes i just tried it now with factory default settings too.
But if it is fixed in 2.93.3, i think i would need to wait for it to be a stable release if the issue isn't shown for{F10277507} this version.

Anyway, I am sending a video sample of the issue.

Hi, It's not in version 2.93.3, but in version 2.93.2 Yes i just tried it now with factory default settings too. But if it is fixed in 2.93.3, i think i would need to wait for it to be a stable release if the issue isn't shown for{[F10277507](https://archive.blender.org/developer/F10277507/Blender_Opacity_Bug0.avi)} this version. Anyway, I am sending a video sample of the issue.

Evan Wilson commented

2021-08-12 12:40:13 +02:00

Added subscriber: @EAW

Evan Wilson commented

2021-08-12 12:40:13 +02:00

According to #77572, this is an issue with Mesa's Iris Driver and certain Intel 520/620/630 Graphics cards.

I believe the root cause is this, which also caused a similar issue for me with Houdini
As of Mesa 19.2, a new OpenGL driver, Iris, is available for testing. In Mesa 20.0, the Iris driver is promoted to be the default for Gen8+.
The Iris driver is causing issues with various OpenGL applications.
I am able to (temporarily) fix this issue by exporting MESA_LOADER_DRIVER_OVERRIDE=i965 in the shell before running Blender. This forces me back to the i965 driver, and opacity of reference images in Blender works again.

From https://developer.blender.org/T77572#994309

Try loading Blender after setting MESA_LOADER_DRIVER_OVERRIDE=i965
Also, try seeing if the issue occurs in 2.82a.
https://download.blender.org/release/

According to #77572, this is an issue with Mesa's Iris Driver and certain Intel 520/620/630 Graphics cards. >I believe the root cause is this, which also caused a similar issue for me with Houdini >As of Mesa 19.2, a new OpenGL driver, Iris, is available for testing. In Mesa 20.0, the Iris driver is promoted to be the default for Gen8+. >The Iris driver is causing issues with various OpenGL applications. >I am able to (temporarily) fix this issue by exporting MESA_LOADER_DRIVER_OVERRIDE=i965 in the shell before running Blender. This forces me back to the i965 driver, and opacity of reference images in Blender works again. From https://developer.blender.org/T77572#994309 Try loading Blender after setting `MESA_LOADER_DRIVER_OVERRIDE=i965` Also, try seeing if the issue occurs in 2.82a. https://download.blender.org/release/

Evan Wilson commented

2021-10-09 00:23:21 +02:00

Changed status from 'Needs User Info' to: 'Resolved'

Evan Wilson closed this issue

2021-10-09 00:23:21 +02:00

Evan Wilson self-assigned this 2021-10-09 00:23:21 +02:00

Evan Wilson commented

2021-10-09 00:23:21 +02:00

As 2.93.3 has been released I’ll close this report.

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Image/Reference Background Opacity #90583