Eevee - visual artifacts during irradiance volume baking #62997

New Issue

Marcin Twarowski · 2019-03-27T09:39:55+01:00

Marcin Twarowski commented

2019-03-27 09:39:55 +01:00

Windows-10-10.0.16299 64 Bits
GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.35
Blender 2.80 (sub 51), branch: blender2.7, commit date: 2019-03-26 18:57, hash: 337eb8c1de

irradiance_volume_bake_artifacts.blend

Open attached file
Switch to rendered mode (Eevee)
Press "Bake Indirect Lighting"

You should see squares flickering:

Video:
Desktop 2019.03.27 - 09.18.07.01.avi

Windows-10-10.0.16299 64 Bits GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.35 Blender 2.80 (sub 51), branch: blender2.7, commit date: 2019-03-26 18:57, hash: `337eb8c1de` [irradiance_volume_bake_artifacts.blend](https://archive.blender.org/developer/F8291585/irradiance_volume_bake_artifacts.blend) - Open attached file - Switch to rendered mode (Eevee) - Press "Bake Indirect Lighting" You should see squares flickering: ![irradiance_volume_bug.jpg](https://archive.blender.org/developer/F6890250/irradiance_volume_bug.jpg) Video: [Desktop 2019.03.27 - 09.18.07.01.avi](https://archive.blender.org/developer/F6889831/Desktop_2019.03.27_-_09.18.07.01.avi)

Marcin Twarowski commented

2019-03-27 09:39:55 +01:00

Added subscriber: @MarcinTwarowski

Jacques Lucke commented

2019-03-27 12:31:40 +01:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-03-27 12:31:40 +01:00

I can't reproduce it here.
Is your GPU driver up to date?

I can't reproduce it here. Is your GPU driver up to date?

Marcin Twarowski commented

2019-03-27 14:05:25 +01:00

I've just updated drivers to 419.67 and the problem remains. It doesn't happen in every scene, there's something about this particular combination of objects and materials that causes problems. If I replace material of the tiles for a more simple material there's no flickering. Perhaps related to the other bug I reported: #62742

Jacques Lucke commented

2019-03-27 14:07:42 +01:00

Added subscribers: @fclem, @Jeroen-Bakker
Removed subscribers: @JacquesLucke, @MarcinTwarowski

Added subscribers: @fclem, @Jeroen-Bakker Removed subscribers: @JacquesLucke, @MarcinTwarowski

Jacques Lucke commented

2019-03-27 14:07:42 +01:00

@fclem, @Jeroen-Bakker, ideas?

Jacques Lucke commented

2019-03-27 14:08:07 +01:00

Added subscribers: @JacquesLucke, @MarcinTwarowski
Removed subscribers: @Jeroen-Bakker, @fclem

Added subscribers: @JacquesLucke, @MarcinTwarowski Removed subscribers: @Jeroen-Bakker, @fclem

Jacques Lucke commented

2019-03-27 14:08:38 +01:00

Added subscribers: @fclem, @Jeroen-Bakker

Jacques Lucke commented

2019-03-27 14:08:38 +01:00

stupid phabricator xD

Clément Foucault self-assigned this 2019-03-27 19:07:33 +01:00

Clément Foucault commented

2019-03-27 19:07:33 +01:00

I can replicate on NV + Linux. Seems to be a data races in the driver. Using glFinish after rendering an irradiance sample seems to fix the issue.

blender-admin commented

2019-03-27 19:15:23 +01:00

This issue was referenced by 96d200775a

This issue was referenced by 96d200775a69a86fb491841ef171d2131841442f

Clément Foucault commented

2019-03-27 19:15:48 +01:00

Changed status from 'Open' to: 'Resolved'

Clément Foucault closed this issue

2019-03-27 19:15:48 +01:00

Marcin Twarowski commented

2019-03-28 10:14:35 +01:00

It didn't fix it for me, I'm afraid. I still see the same artefacts in cd92f8ea46 build. They appear only when camera is close to the irradiance volume.

It didn't fix it for me, I'm afraid. I still see the same artefacts in cd92f8ea4626 build. They appear only when camera is close to the irradiance volume.

Clément Foucault commented

2019-03-28 13:26:26 +01:00

Changed status from 'Resolved' to: 'Open'

Clément Foucault reopened this issue

2019-03-28 13:26:26 +01:00

Marcin Twarowski commented

2019-03-28 21:27:40 +01:00

I just tested on

Windows 10, GTX 750 Ti with 419.67 driver, i5-3350P

and there's no flickering in this scene. So it would seem it's a problem with GeForce GTX 1080.

I just tested on > Windows 10, GTX 750 Ti with 419.67 driver, i5-3350P and there's no flickering in this scene. So it would seem it's a problem with GeForce GTX 1080.

Marcin Twarowski commented

2019-03-29 10:19:03 +01:00

I just checked on another machines at work:

GTX 1080, Windows 7 (with old drivers 388.13)
same machine but on Linux
another computer with GTX 970, Windows 7, newest drivers
And there's no flickering.

However, a colleague has a similar setup to mine (Windows 10, i7-6900K, GTX 1080) did a test and has glitches. So perhaps it's a problem specific to 1080 and Windows 10?

I just checked on another machines at work: - GTX 1080, Windows 7 (with old drivers 388.13) - same machine but on Linux - another computer with GTX 970, Windows 7, newest drivers And there's no flickering. However, a colleague has a similar setup to mine (Windows 10, i7-6900K, GTX 1080) did a test and has glitches. So perhaps it's a problem specific to 1080 and Windows 10?

Clément Foucault was unassigned by Dalai Felinto

2019-12-23 16:34:48 +01:00

Clément Foucault commented

2020-01-17 20:03:49 +01:00

Is this still happening with latest master?

Marcin Twarowski commented

2020-01-20 08:43:38 +01:00

I tried it with newest build

Windows-10-10.0.16299-SP0 64 Bits
GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86

version: 2.83 (sub 1), branch: master, commit date: 2020-01-18 19:00, hash: c2e62c1292

and immediately when I pressed Bake Indirect Lighting it crashed to desktop.

Error   : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FF6520BF2B0
GL API other: Buffer detailed info: Buffer object 1 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) has been mapped WRITE_ONLY in SYSTEM HEAP memory (fast).
Module  : C:\Users\TwaMa\Desktop\blender-2.83-c2e62c129235-windows64\blender.exe
GL API ot

I made a bug report: #73251

I tried it with newest build > Windows-10-10.0.16299-SP0 64 Bits > GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86 > > version: 2.83 (sub 1), branch: master, commit date: 2020-01-18 19:00, hash: `c2e62c1292` and immediately when I pressed *Bake Indirect Lighting* it crashed to desktop. ``` Error : EXCEPTION_ACCESS_VIOLATION Address : 0x00007FF6520BF2B0 GL API other: Buffer detailed info: Buffer object 1 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) has been mapped WRITE_ONLY in SYSTEM HEAP memory (fast). Module : C:\Users\TwaMa\Desktop\blender-2.83-c2e62c129235-windows64\blender.exe GL API ot ``` I made a bug report: #73251

Marcin Twarowski commented

2020-01-21 09:25:37 +01:00

Crash was fixed. I tested again and yes, the problem remains with newest build.

I updated original .blend file. I moved camera inside the room since there have been some changes to backfacing rendering since it was originally made.

Crash was fixed. I tested again and yes, the problem remains with newest build. I updated original .blend file. I moved camera inside the room since there have been some changes to backfacing rendering since it was originally made.

Clément Foucault commented

2020-01-21 13:54:41 +01:00

I will lower the priority since this is only a visual artifact during baking (as far as I understand).

Note that I could reproduce on my NVidia + Linux system.

I will lower the priority since this is only a visual artifact during baking (as far as I understand). Note that I could reproduce on my NVidia + Linux system.

Marcin Twarowski commented

2020-06-30 10:47:00 +02:00

Just noticed that there are no artefacts when "Cubemap Size" is set to 2048 px or 4096 px.

Clément Foucault commented

2020-06-30 15:15:40 +02:00

Still happening in 2.90?

Marcin Twarowski commented

2020-06-30 15:52:51 +02:00

In #62997#969762, @fclem wrote:
Still happening in 2.90?

Yes. Tested on:

System
Windows-10-10.0.19041-SP0 64 Bits
GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 451.48

Blender Version
2.90.0 Alpha, branch: master, commit date: 2020-06-29 21:12, hash: f28e59bd74

> In #62997#969762, @fclem wrote: > Still happening in 2.90? Yes. Tested on: **System** Windows-10-10.0.19041-SP0 64 Bits GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 451.48 **Blender Version** 2.90.0 Alpha, branch: master, commit date: 2020-06-29 21:12, hash: `f28e59bd74`

Philipp Oeser removed the

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Eevee - visual artifacts during irradiance volume baking #62997