Flickering sky when running world from sdf file. #2267
Comments
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@iche033 is this due to the non-NVIDIA GPU? |
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I do remember seeing flickering sky issue on user laptops before. It could be a gpu / driver issue. |
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Ok thanks. I will see if this error happens when i run it using a GPU and report back. |
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Hi! I am coming here from a post I made on Gazebo Community. This looks like the same problem I am facing. I wrote an SDF world with a sky and a directional light, and when I toggle the shadows the sky start flickering. Here some information about my machine, as in the first post in this issue: $ LANG=C lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation Alder Lake-P GT1 [UHD Graphics] [8086:46a3] (rev 0c)
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:28a0] (rev a1)$ echo "$DISPLAY"
:0$ LANG=C glxinfo -B | grep -i '\(direct rendering\|opengl\|profile\)'
direct rendering: Yes
Preferred profile: core (0x1)
Max core profile version: 4.6
Max compat profile version: 4.6
Max GLES1 profile version: 1.1
Max GLES[23] profile version: 3.2
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) Graphics (ADL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 23.0.4-0ubuntu1~22.04.1
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL version string: 4.6 (Compatibility Profile) Mesa 23.0.4-0ubuntu1~22.04.1
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 23.0.4-0ubuntu1~22.04.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20$ ps aux | grep Xorg
biagio 26878 0.0 0.0 9212 2560 pts/6 R+ 20:09 0:00 grep --color=auto Xorg$ sudo env LANG=C X -version
X.Org X Server 1.21.1.4
X Protocol Version 11, Revision 0
Current Operating System: Linux athena 6.2.0-39-generic #40~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Nov 16 10:53:04 UTC 2 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.2.0-39-generic root=UUID=bb022743-038b-409c-b381-21e78caa4017 ro quiet splash vt.handoff=7
xorg-server 2:21.1.4-2ubuntu1.7~22.04.5 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.40.0 |
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Yes. So I was able to confirm that if I use a GPU then the flickering does not appear. See Image below. |
oh sounds like the shadows (or the light) is causing the sky to flicker? One workaround would be to disable shadows for the directional light. |
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Yes this worked! If I disable the shadows for my sun and enable them for the scene only, I can run the sky. |
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@iche033 Is having both sets of shadows enabled still a bug? |
I haven't seen any movement on this so I assume it's still an issue. |
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Hi all, I am running into the same issue. With shadows: Without shadows, it is much better. However, still some flickering occurs: I am also running it on a laptop without GPU: |
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I see this issue running on multiple computers with an Nvidia GPU. Disabling cast shadows from the sun also fixes the issue for me. |
Environment
Rendering plugin: [ogre2].
Generally, mention all circumstances that might affect rendering capabilities:
Rendering system info:
Description
Steps to reproduce
gz sim -r path/to/null/island.sdfOutput
picture of flickering...
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