Material Preview (and final render in EEVEE) purple #77944

New Issue

Arthur · 2020-06-17T08:50:00+02:00

Arthur commented

2020-06-17 08:50:00 +02:00

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: Intel(R) HD Graphics 630 Intel 4.5.0 - Build 26.20.100.7263

Blender Version
Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: 211b6c29f7
Worked: I don't remember this bug occuring in previous versions.

Short description of error
I know, that materials should become purple when the texture is missing.
But the problem is that they not behave as they should even without applying textures and also with the default material.
This bug occurs in EEVEE:

In material preview in properties
In render
Sometimes - in viewport

In a render, it is also a problem with the scene surface material.
I attach some screenshots from material preview: they are all the same default material.

Exact steps for others to reproduce the error

Open Blender
Press F12 or go to material preview in object settings.
... see the bug

**System Information** Operating system: Windows-10-10.0.17763-SP0 64 Bits Graphics card: Intel(R) HD Graphics 630 Intel 4.5.0 - Build 26.20.100.7263 **Blender Version** Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: `211b6c29f7` Worked: I don't remember this bug occuring in previous versions. **Short description of error** I know, that materials should become purple when the texture is missing. But the problem is that they not behave as they should even without applying textures and also with the default material. This bug occurs in EEVEE: 1) In material preview in properties 2) In render 3) Sometimes - in viewport In a render, it is also a problem with the scene surface material. I attach some screenshots from material preview: they are all the same default material. **Exact steps for others to reproduce the error** 1) Open Blender 2) Press F12 or go to material preview in object settings. 3) ... see the bug ![4.png](https://archive.blender.org/developer/F8627272/4.png) ![3.png](https://archive.blender.org/developer/F8627271/3.png) ![2.png](https://archive.blender.org/developer/F8627270/2.png) ![1.png](https://archive.blender.org/developer/F8627269/1.png)

Arthur commented

2020-06-17 08:50:00 +02:00

Added subscriber: @ArthurPholax

blender-admin commented

2020-06-17 08:50:00 +02:00

#79866 was marked as duplicate of this issue

blender-admin commented

2020-06-17 08:50:00 +02:00

#78850 was marked as duplicate of this issue

blender-admin commented

2020-06-17 08:50:00 +02:00

#78715 was marked as duplicate of this issue

blender-admin commented

2020-06-17 08:50:00 +02:00

#77588 was marked as duplicate of this issue

blender-admin commented

2020-06-17 08:50:00 +02:00

#78311 was marked as duplicate of this issue

blender-admin commented

2020-06-17 08:50:00 +02:00

#78205 was marked as duplicate of this issue

Jacques Lucke commented

2020-06-17 12:05:06 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2020-06-17 12:05:06 +02:00

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

Jacques Lucke commented

2020-06-17 12:05:06 +02:00

Does it work in 2.90 builds from https://builder.blender.org/download/?
Can you update your GPU driver?

Does it work in 2.90 builds from https://builder.blender.org/download/? Can you update your GPU driver?

Arthur commented

2020-06-17 16:49:34 +02:00

For now, 2.90 crashes when I try to open material preview.

UPD: First, the preview window opens black then blender crashes in few seconds.

Error : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FF79B85F933
Module : blender.exe
Thread : 0000186c

For now, 2.90 crashes when I try to open material preview. UPD: First, the preview window opens black then blender crashes in few seconds. Error : EXCEPTION_ACCESS_VIOLATION Address : 0x00007FF79B85F933 Module : blender.exe Thread : 0000186c

Arthur commented

2020-06-17 17:33:19 +02:00

I've updated my driver just now.

Still I got same bug on 2.83 and crashes on 2.9 with the message.

Error : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FF60E90F933
Module : blender.exe
Thread : 00000c38

Also I noticed that 2.9 crashes (now?) not while opening the preview pane but when I open just material settings in properties panel. But only if there is a material attached to the object.

At the same time there is nothing wrong happens when I edit material in the Shading workspace.
All is good also with editing World Properties (I changed Background to Principled BSDF and all is fine).
And there are no crashes in that case while using Cycles renderer.

I've updated my driver just now. Still I got same bug on 2.83 and crashes on 2.9 with the message. Error : EXCEPTION_ACCESS_VIOLATION Address : 0x00007FF60E90F933 Module : blender.exe Thread : 00000c38 Also I noticed that 2.9 crashes (now?) not while opening the preview pane but when I open just material settings in properties panel. But only if there is a material attached to the object. At the same time there is nothing wrong happens when I edit material in the Shading workspace. All is good also with editing World Properties (I changed Background to Principled BSDF and all is fine). And there are no crashes in that case while using Cycles renderer.

Jacques Lucke commented

2020-06-17 17:47:22 +02:00

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

Arthur commented

2020-06-17 17:52:20 +02:00

Add: sometimes, in 2.9, when I tweak some some EEVEE settings an switch between render engines it doesn't crash when I open properties panel, but crashes on trying to preview material in that panel.
Can't see any pattern there though.

Add: sometimes, in 2.9, when I tweak some some EEVEE settings an switch between render engines it doesn't crash when I open properties panel, but crashes on trying to preview material in that panel. Can't see any pattern there though.

Philipp Oeser commented

2020-06-22 10:21:23 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-06-22 10:21:23 +02:00

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

Philipp Oeser commented

2020-06-22 10:21:23 +02:00

Thanks for the report. This might be a graphic driver issue.

To upgrade to the latest driver, see here for more information: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html
https://downloadcenter.intel.com/product/80939/Graphics-Drivers

Could you check if this helps?
(If not, also please check if this is also an issue with File > Defaults > Load Factory Settings)

Thanks for the report. This might be a graphic driver issue. To upgrade to the latest driver, see here for more information: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html https://downloadcenter.intel.com/product/80939/Graphics-Drivers Could you check if this helps? (If not, also please check if this is also an issue with `File` > `Defaults` > `Load Factory Settings`)

Philipp Oeser changed title from ~~Working materials become purple~~ to Material Preview purple

2020-06-22 10:21:51 +02:00

Arthur commented

2020-06-22 14:07:34 +02:00

As I wrote before (Wed, Jun 17, 5:33 PM), I have updated the graphic driver and nothing changed for better.

Also, I've noticed that you renamed the task to "Material Preview purple". It is wrong, because the bug influences not only material preview, but also a final render in EEVEE (as I stated in the description).

As I wrote before (Wed, Jun 17, 5:33 PM), I have updated the graphic driver and nothing changed for better. Also, I've noticed that you renamed the task to "Material Preview purple". It is wrong, because the bug influences not only material preview, but also a final render in EEVEE (as I stated in the description).

Philipp Oeser commented

2020-06-22 14:20:47 +02:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

Philipp Oeser changed title from ~~Material Preview purple~~ to Material Preview (and final render in EEVEE) purple

2020-06-22 14:21:08 +02:00

Philipp Oeser commented

2020-06-24 14:34:51 +02:00

Since this came up in #78205 (Material preview with eevee render engine shows pink color regardless of material settings.) as well: does this only occur when resizing the panel?

Clément Foucault commented

2020-06-24 14:43:24 +02:00

Added subscriber: @fclem

Clément Foucault commented

2020-06-24 14:43:24 +02:00

What is the output if you launch blender using the debug and debug_gpu batch files?

Ingo Reuter commented

2020-06-25 09:27:11 +02:00

Added subscriber: @ingoreuter

Arthur commented

2020-06-25 10:46:45 +02:00

In #77944#964272, @fclem wrote:
What is the output if you launch blender using the debug and debug_gpu batch files?

I launched blender_debug_log. Is it a proper file? I've got some logs.
debug_logs.zip

> In #77944#964272, @fclem wrote: > What is the output if you launch blender using the debug and debug_gpu batch files? I launched blender_debug_log. Is it a proper file? I've got some logs. [debug_logs.zip](https://archive.blender.org/developer/F8643246/debug_logs.zip)

Arthur commented

2020-06-25 11:10:53 +02:00

In #77944#964260, @lichtwerk wrote:
Since this came up in #78205 (Material preview with eevee render engine shows pink color regardless of material settings.) as well: does this only occur when resizing the panel?

No. It happens when:

opening a preview (in my case the material icon becames purple here, but the preview itself often can be normal yet in 2.83)
changing a Preview Render Type (it "paints" the object and the plane unpredictably, but most times it's purple every time when switching, as in screenshots in the description. For example, every part of a Shader Ball can be either grey or purple color)
changing something in material shader (for example, a Base Color)
using Material Preview viewport shading
Render itself

So, I believe, it happens every time when there is a need to show a material

NEW INFO:
Material preview shows either grey or purple color, independent of material surface color.

> In #77944#964260, @lichtwerk wrote: > Since this came up in #78205 (Material preview with eevee render engine shows pink color regardless of material settings.) as well: does this only occur when resizing the panel? No. It happens when: 1) opening a preview (in my case the material icon becames purple here, but the preview itself often can be normal yet in 2.83) 2) changing a Preview Render Type (it "paints" the object and the plane unpredictably, but most times it's purple every time when switching, as in screenshots in the description. For example, every part of a Shader Ball can be either grey or purple color) 3) changing something in material shader (for example, a Base Color) 4) using Material Preview viewport shading 5) Render itself So, I believe, it happens every time when there is a need to show a material ![5.png](https://archive.blender.org/developer/F8643259/5.png) **NEW INFO:** Material preview shows either grey or purple color, independent of material surface color. ![6.png](https://archive.blender.org/developer/F8643265/6.png)

Germano Cavalcante commented

2020-06-30 15:44:35 +02:00

Added subscriber: @dpshamonin

Clément Foucault commented

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

Added subscribers: @DreamNoms, @mano-wii

Arthur commented

2020-07-07 10:53:25 +02:00

A little new peice of information, if it can be helpful.
Fresh Blender 2.83.1

Now, after few switches, material color starts to appear , but purple/grey problem is still there.

A little new peice of information, if it can be helpful. Fresh Blender 2.83.1 Now, after few switches, material color starts to appear , but purple/grey problem is still there. ![7.png](https://archive.blender.org/developer/F8675078/7.png)

Arthur commented

2020-07-07 11:36:28 +02:00

Digging deeper, I can see, that the problem is not only in color.

I set a big value to Specular setting ("20"), and started to see that the reflexions of a floor are in a checker pattern, but floor is still pure purple
I tried transmission and see that it behaves "normally" - the floor is grey checker, tinted in a material surface color (see image below. IOR set to "1", so refraction is okay here).
Clearcoat setting more than "0" most time makes a material purple and opaque (and once I had a crash while changing).
If Metallic setting is not "0" or "1", and transmission is "1", the material becomes purple.
Anisotropic setting seems like doing nothing at all (don't know if it is supported in EEVEE)

All in Blender 2.83.1

Digging deeper, I can see, that the problem is not only in color. 1) I set a big value to Specular setting ("20"), and started to see that the reflexions of a floor are in a checker pattern, but floor is still pure purple 2) I tried transmission and see that it behaves "normally" - the floor is grey checker, tinted in a material surface color (see image below. IOR set to "1", so refraction is okay here). 3) Clearcoat setting more than "0" most time makes a material purple and opaque (and once I had a crash while changing). 4) If Metallic setting is not "0" or "1", and transmission is "1", the material becomes purple. 5) Anisotropic setting seems like doing nothing at all (don't know if it is supported in EEVEE) All in Blender 2.83.1 ![8.png](https://archive.blender.org/developer/F8675115/8.png)

Evan Wilson commented

2020-07-08 05:27:04 +02:00

Added subscriber: @noiling

Germano Cavalcante commented

2020-07-14 15:15:04 +02:00

Added subscriber: @Hyejun

Arthur commented

2020-07-17 13:44:35 +02:00

2.83.2 - the problem is still there

Now I also can't get any color or transparency in 2.83.1

2.83.2 - the problem is still there Now I also can't get any color or transparency in 2.83.1

Arthur commented

2020-07-31 10:54:10 +02:00

2.83.3 - same

paul commented

2020-08-25 21:53:18 +02:00

Hi,
I just installed 2.91 alfa, the problem is solved there, at least in my case, However on 2.83.5 it still persists. Shouln´t be too difficult to compare and correct this on the 2.83 series ....

Hi, I just installed 2.91 alfa, the problem is solved there, at least in my case, However on 2.83.5 it still persists. Shouln´t be too difficult to compare and correct this on the 2.83 series ....

Ankit Meel commented

2020-09-05 09:29:25 +02:00

Added subscribers: @AJB-3, @ankitm

paul commented

2020-09-05 15:15:02 +02:00

Sorry, I have to correct my last post: The problem persists. Only that now it takes longer (more renders) to produce it. While formerly the first evee render was alright and from the second one it was all purple, it now goes well for up to more or less 10 times, then it is purple again. The problem that the render is inmediately purple as soon as I give the default cube a material still persists. When I change the color, the material icon within the material tab goes purple.

Philipp Oeser removed the

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Material Preview (and final render in EEVEE) purple #77944