Fedora/Wayland : color picking broken #106264

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Philipp Oeser · 2023-03-29T12:28:33+02:00

Philipp Oeser commented

2023-03-29 12:28:33 +02:00

System Information
Operating system: Linux-6.1.18-200.fc37.x86_64-x86_64-with-glibc2.36 64 Bits
Graphics card: AMD Radeon Graphics (renoir, LLVM 15.0.7, DRM 3.49, 6.1.18-200.fc37.x86_64) AMD 4.6 (Core Profile) Mesa 22.3.7

Blender Version
Broken: version: 3.6.0 Alpha, branch: main, commit date: 2023-03-26 14:59, hash: 2f4a7d67b7b8

Caused/exposed by: 70ef334f08

Short description of error
Fedora/Wayland : color picking broken

Exact steps for others to reproduce the error

try to pick a color using the eyedopper anywhere in blender, nothing happens
try to use the eyedropper tool in greasepencil draw mode, it alwasy picks black

Culprit commit changed a path to libwayland-egl.so.1 which is present on my system in /lib64/libwayland-egl.so.1 (a link to libwayland-egl.so.1.21.0)

WITH_GHOST_WAYLAND=OFF fixes the problem

I do have a nvidia GPU (set to be the primary GPU in /etc/X11/xorg.conf.d/nvidia.conf), will check why that seems to not be in use atm...

**System Information** Operating system: Linux-6.1.18-200.fc37.x86_64-x86_64-with-glibc2.36 64 Bits Graphics card: AMD Radeon Graphics (renoir, LLVM 15.0.7, DRM 3.49, 6.1.18-200.fc37.x86_64) AMD 4.6 (Core Profile) Mesa 22.3.7 **Blender Version** Broken: version: 3.6.0 Alpha, branch: main, commit date: 2023-03-26 14:59, hash: `2f4a7d67b7b8` Caused/exposed by: 70ef334f085c0c6c328a6e04357bec7085102c21 **Short description of error** Fedora/Wayland : color picking broken **Exact steps for others to reproduce the error** - try to pick a color using the eyedopper anywhere in blender, nothing happens - try to use the eyedropper tool in greasepencil draw mode, it alwasy picks black Culprit commit changed a path to `libwayland-egl.so.1` which is present on my system in /lib64/libwayland-egl.so.1 (a link to libwayland-egl.so.1.21.0) `WITH_GHOST_WAYLAND=OFF` fixes the problem I do have a nvidia GPU (set to be the primary GPU in /etc/X11/xorg.conf.d/nvidia.conf), will check why that seems to not be in use atm...

system-info.txt

20 KiB

Philipp Oeser added the

labels 2023-03-29 12:28:33 +02:00

Philipp Oeser referenced this issue

2023-03-29 12:36:22 +02:00

On the left, Eyedopper gives incorrect colors, so if I add a picture (image as planes), the color is much lighter #106170

Philipp Oeser added

and removed

labels 2023-03-29 12:41:42 +02:00

Philipp Oeser commented

2023-03-30 09:03:06 +02:00

CCing @ideasman42 since it was his commit.

I assume this has to do with the AMD GPU, still need to figure out how to actually have blender use the NVidia card as primary GPU (even tough it is set as primary GPU generally...)

CCing @ideasman42 since it was his commit. I assume this has to do with the AMD GPU, still need to figure out how to actually have blender use the NVidia card as primary GPU (even tough it is set as primary GPU generally...)

Campbell Barton commented

2023-04-14 00:50:37 +02:00

Double checked and the color picker is working with NVidia drivers, I have an AMD GPU too (but need to physically swap it in).

Operating system: Linux-6.2.10-arch1-1-x86_64-with-glibc2.37 64 Bits, WAYLAND UI
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 530.41.03

@lichtwerk could you please check the following:

Does making a screenshot work? (this may be related to #98462), where EGL_BUFFER_PRESERVED may not be supported causing sampling the buffer to fail.
Does this problem also happen with software OpenGL? (Blender with LIBGL_ALWAYS_SOFTWARE).

Note that in general AMD support for Wayland seems much better than AMD, so it's surprising AMD has this problem.

Double checked and the color picker is working with NVidia drivers, I have an AMD GPU too (but need to physically swap it in). ``` Operating system: Linux-6.2.10-arch1-1-x86_64-with-glibc2.37 64 Bits, WAYLAND UI Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 530.41.03 ``` @lichtwerk could you please check the following: - Does making a screenshot work? (this may be related to #98462), where `EGL_BUFFER_PRESERVED` may not be supported causing sampling the buffer to fail. - Does this problem also happen with software OpenGL? (Blender with LIBGL_ALWAYS_SOFTWARE). Note that in general AMD support for Wayland seems much better than AMD, so it's surprising AMD has this problem.

Philipp Oeser commented

2023-04-14 09:57:10 +02:00

@lichtwerk could you please check the following:

Does making a screenshot work? (this may be related to #98462), where EGL_BUFFER_PRESERVED may not be supported causing sampling the buffer to fail.

Yep, screenshots work on my end (they are not black)

Does this problem also happen with software OpenGL? (Blender with LIBGL_ALWAYS_SOFTWARE).

Yes, still a problem then

> @lichtwerk could you please check the following: > > - Does making a screenshot work? (this may be related to #98462), where `EGL_BUFFER_PRESERVED` may not be supported causing sampling the buffer to fail. Yep, screenshots work on my end (they are not black) > - Does this problem also happen with software OpenGL? (Blender with LIBGL_ALWAYS_SOFTWARE). > Yes, still a problem then

Campbell Barton referenced this issue from a commit

2023-04-16 12:18:44 +02:00

Fix #106264: Color picker broken with Wayland & AMD GPU

Campbell Barton closed this issue

2023-04-16 12:18:46 +02:00

Blender Bot added

and removed

labels 2023-04-16 12:18:47 +02:00

Campbell Barton referenced this issue

2023-04-16 12:43:51 +02:00

3.5: Candidates for corrective releases #106258

Campbell Barton commented

2023-04-16 12:45:28 +02:00

This was in fact the same issue as #98462, just a different call to reading pixel information from the window. Now a ghost capabilities flag is used to check if reading from the front-buffer is supported.

Campbell Barton referenced this issue from a commit

2023-04-21 13:35:57 +02:00

Fix #106264: Color picker broken with Wayland & AMD GPU

Campbell Barton referenced this issue from a commit

2023-07-27 13:42:58 +02:00

Fix vertex paint color sample on some GPU's under Wayland

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