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eevee not showing multi material object properly when blend is loaded until mesh is updated #68826

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opened 2019-08-19 14:38:03 +02:00 by MACHIN3 · 46 comments
MACHIN3 commented 2019-08-19 14:38:03 +02:00
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System Information
Operating system: Linux-4.13.10-041310-generic-x86_64-with-debian-stretch-sid 64 Bits
Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.67

Blender Version
Broken: version: 2.81 (sub 2), branch: master, commit date: 2019-08-16 13:02, hash: 078d02f557
Worked: 4074ab361e

Short description of error
I have an object with 3 material slots and a different material on each slot. When the blend is loaded in SOLID shading mode, and you switch to lookdev or rendered mode with eevee being the rendered, the material of the last slot is shown covering the entire mesh, when in reality only a few polygons have that slots material index assigned. If you update the mesh, either by going manually into edit mode, or by running obj.data.update() the material's are updated and shown properly - until the blend is loaded again.

eevee_and_multi_material_objects.blend

Exact steps for others to reproduce the error

  • load the blend file above
    • if you are loading it without UI, make sure you are in SOLID shading
  • switch to lookdev or rendered shading
    • note how the entire object is metallic
  • go into edit mode
    • note how the materials update and all three are now shown on different parts of the model
**System Information** Operating system: Linux-4.13.10-041310-generic-x86_64-with-debian-stretch-sid 64 Bits Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.67 **Blender Version** Broken: version: 2.81 (sub 2), branch: master, commit date: 2019-08-16 13:02, hash: `078d02f557` Worked: `4074ab361e` **Short description of error** I have an object with 3 material slots and a different material on each slot. When the blend is loaded in SOLID shading mode, and you switch to lookdev or rendered mode with eevee being the rendered, the material of the last slot is shown covering the entire mesh, when in reality only a few polygons have that slots material index assigned. If you update the mesh, either by going manually into edit mode, or by running `obj.data.update()` the material's are updated and shown properly - until the blend is loaded again. [eevee_and_multi_material_objects.blend](https://archive.blender.org/developer/F7673043/eevee_and_multi_material_objects.blend) **Exact steps for others to reproduce the error** * load the blend file above - if you are loading it without UI, make sure you are in SOLID shading * switch to lookdev or rendered shading - note how the entire object is metallic * go into edit mode - note how the materials update and all three are now shown on different parts of the model
MACHIN3 commented 2019-08-19 14:38:03 +02:00
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blender-admin commented 2019-08-19 14:38:03 +02:00
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#68754 was marked as duplicate of this issue

#68754 was marked as duplicate of this issue
blender-admin commented 2019-08-19 14:38:03 +02:00
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#70008 was marked as duplicate of this issue

#70008 was marked as duplicate of this issue
blender-admin commented 2019-08-19 14:38:03 +02:00
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#70058 was marked as duplicate of this issue

#70058 was marked as duplicate of this issue
blender-admin commented 2019-08-19 14:38:03 +02:00
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#69945 was marked as duplicate of this issue

#69945 was marked as duplicate of this issue
blender-admin commented 2019-08-19 14:38:03 +02:00
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#69695 was marked as duplicate of this issue

#69695 was marked as duplicate of this issue
blender-admin commented 2019-08-19 14:38:03 +02:00
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#69329 was marked as duplicate of this issue

#69329 was marked as duplicate of this issue
blender-admin commented 2019-08-19 14:38:03 +02:00
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#69142 was marked as duplicate of this issue

#69142 was marked as duplicate of this issue
Asher commented 2019-08-19 16:46:23 +02:00
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Added subscriber: @ThatAsherGuy

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Fin O'Riordan commented 2019-08-21 10:07:36 +02:00
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Fin O'Riordan commented 2019-08-21 10:07:36 +02:00
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Bug reproduced using the linked .blend:

system-info.txt

Bug reproduced using the linked .blend: [system-info.txt](https://archive.blender.org/developer/F7678520/system-info.txt)
Philipp Oeser commented 2019-08-21 10:25:57 +02:00
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Added subscriber: @lichtwerk

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Philipp Oeser commented 2019-08-21 10:25:57 +02:00
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Cannot reproduce (f041d2f116), immediate multiple materials here...
system-info.txt

Cannot reproduce (f041d2f116), immediate multiple materials here... [system-info.txt](https://archive.blender.org/developer/F7678702/system-info.txt)
Philipp Oeser commented 2019-08-21 10:27:26 +02:00
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Seeing I have a newer driver than both of you: mind checking if upgrading the drivers fixes the problem?

Seeing I have a newer driver than both of you: mind checking if upgrading the drivers fixes the problem?
marc dion commented 2019-08-21 10:48:19 +02:00
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Added subscriber: @MarcClintDion

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marc dion commented 2019-08-21 10:48:19 +02:00
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It's confirmed here.

Windows 10
GTX 1070 - driver(430.86)

Broken material stack.jpg

It's confirmed here. Windows 10 GTX 1070 - driver(430.86) ![Broken material stack.jpg](https://archive.blender.org/developer/F7678925/Broken_material_stack.jpg)
MACHIN3 commented 2019-08-21 10:51:30 +02:00
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I have just confirmed it on Windows as well, with newer drivers than yours @lichtwerk

renderer:	'Quadro P4000/PCIe/SSE2'
vendor:		'NVIDIA Corporation'
version:	'4.5.0 NVIDIA 431.02'

system-info.txt

You need to make sure you are loading the scene while in SOLID shading or with the Load UI option enabled.

I have just confirmed it on Windows as well, with newer drivers than yours @lichtwerk ``` renderer: 'Quadro P4000/PCIe/SSE2' vendor: 'NVIDIA Corporation' version: '4.5.0 NVIDIA 431.02' ``` [system-info.txt](https://archive.blender.org/developer/F7678945/system-info.txt) You need to make sure you are loading the scene while in SOLID shading or with the Load UI option enabled.
Clément Foucault was assigned by Philipp Oeser 2019-08-21 11:07:04 +02:00
Philipp Oeser commented 2019-08-21 11:07:04 +02:00
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Philipp Oeser commented 2019-08-21 11:07:04 +02:00
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Ah, here we go, I can reproduce loading having Load UI ON.
Thx everyone for poking.
[ still cannot reproduce having Load UI OFF -- even though in SOLID, but I guess that is not mandatory for calling this a bug :) ]

Anyways: would kindly ask @fclem to have a look here...

Ah, here we go, I can reproduce loading having `Load UI` ON. Thx everyone for poking. [ still cannot reproduce having `Load UI` OFF -- even though in SOLID, but I guess that is not mandatory for calling this a bug :) ] Anyways: would kindly ask @fclem to have a look here...
blender-admin commented 2019-08-21 15:53:57 +02:00
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This issue was referenced by d357e7b065

This issue was referenced by d357e7b0653588d5fb85deec270464778a252406
Clément Foucault commented 2019-08-21 15:55:26 +02:00
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Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
blender-admin commented 2019-08-23 20:28:43 +02:00
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This issue was referenced by f16a28c4af

This issue was referenced by f16a28c4afbfab86362898c19aa177227c9f47ed
Brecht Van Lommel commented 2019-08-23 20:35:20 +02:00
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Brecht Van Lommel commented 2019-08-23 20:35:20 +02:00
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Changed status from 'Resolved' to: 'Open'

Changed status from 'Resolved' to: 'Open'
Brecht Van Lommel commented 2019-08-23 20:35:20 +02:00
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Reverted since this caused various crashes:

  • #69087 (Error when using vertex color)
  • #69083 (Blender crashes when switching from solid view to rendered or lookdev mode in eevee.)
  • #69088 (Assert entering editmode with a UVEditor open)
  • #69096 (Crash in drawcode in a BI character file.)
Reverted since this caused various crashes: * #69087 (Error when using vertex color) * #69083 (Blender crashes when switching from solid view to rendered or lookdev mode in eevee.) * #69088 (Assert entering editmode with a UVEditor open) * #69096 (Crash in drawcode in a BI character file.)
Philipp Oeser commented 2019-08-26 10:56:26 +02:00
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Added subscribers: @item412, @AbidMaqbool
blender-admin commented 2019-08-26 15:18:26 +02:00
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This issue was referenced by 742119bcb5

This issue was referenced by 742119bcb50a83b7f8bb6ceefb34861ac54d9cc8
Clément Foucault commented 2019-08-26 15:43:46 +02:00
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Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
Philipp Oeser commented 2019-09-02 10:50:56 +02:00
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Changed status from 'Resolved' to: 'Open'

Changed status from 'Resolved' to: 'Open'
Philipp Oeser commented 2019-09-02 10:50:56 +02:00
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Have to repopen this, doesnt seem fixed for me (and has been reported again in #69329 (Eevee: Only one material is displayed before enter in Edit mode when mesh has multiple materials))
@fclem: mind checking again?

Have to repopen this, doesnt seem fixed for me (and has been reported again in #69329 (Eevee: Only one material is displayed before enter in Edit mode when mesh has multiple materials)) @fclem: mind checking again?
Philipp Oeser commented 2019-09-02 10:51:50 +02:00
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Added subscribers: @MarcinTwarowski, @antoniov

Added subscribers: @MarcinTwarowski, @antoniov
Philipp Oeser commented 2019-09-06 12:42:13 +02:00
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@fclem : I have added this to 2.81 milestone (since it was set to "High"), mind checking again?

@fclem : I have added this to 2.81 milestone (since it was set to "High"), mind checking again?
Philipp Oeser commented 2019-09-10 11:38:33 +02:00
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Daniel Paul commented 2019-09-11 15:10:33 +02:00
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Philipp Oeser commented 2019-09-16 15:08:29 +02:00
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Philipp Oeser commented 2019-09-19 10:11:47 +02:00
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Added subscribers: @jerrsoundripper, @ideasman42

Added subscribers: @jerrsoundripper, @ideasman42
Jerr Soundripper commented 2019-09-19 10:19:51 +02:00
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Edit THE cube, Duplicate it in edit mode, create new material and assign new material to the new one. The second material won't show up in Eevee
Capture d’écran 2019-09-19 à 10.18.59.png

Edit THE cube, Duplicate it in edit mode, create new material and assign new material to the new one. The second material won't show up in Eevee ![Capture d’écran 2019-09-19 à 10.18.59.png](https://archive.blender.org/developer/F7757758/Capture_d_e_cran_2019-09-19_a__10.18.59.png)
Michael Soluyanov commented 2019-09-19 15:58:34 +02:00
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Added subscriber: @crantisz

Added subscriber: @crantisz
Clément Foucault commented 2019-09-19 18:54:09 +02:00
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Added subscribers: @alonabrany, @JacquesLucke

Added subscribers: @alonabrany, @JacquesLucke
Philipp Oeser commented 2019-09-20 13:08:51 +02:00
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Added subscribers: @3di, @capnm

Added subscribers: @3di, @capnm
Jerr Soundripper commented 2019-09-21 09:30:31 +02:00
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The bug I encounter is the same as in #70106

The bug I encounter is the same as in #70106
marc dion commented 2019-09-21 11:15:55 +02:00
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This comment was removed by @MarcClintDion

*This comment was removed by @MarcClintDion*
Antonio Vazquez commented 2019-09-21 11:35:55 +02:00
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Removed subscriber: @antoniov

Removed subscriber: @antoniov
Martin Capitanio commented 2019-09-21 17:19:23 +02:00
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Clément Foucault commented 2019-09-24 21:53:20 +02:00
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Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
Clément Foucault commented 2019-09-24 21:53:20 +02:00
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Fixed by 1d1ef2e797

Fixed by 1d1ef2e797
Thomas Dinges added this to the 2.81 milestone 2023-02-08 16:46:59 +01:00
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Reference: blender/blender#68826
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