Viewport, EEVEE, Look Dev breaks mesh. #70208

New Issue

Timothy Cook · 2019-09-24T17:06:13+02:00

Timothy Cook commented

2019-09-24 17:06:13 +02:00

System Information
Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon Pro 580 OpenGL Engine ATI Technologies Inc. 4.1 ATI-2.11.20

Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 20:20, hash: 5a6ab6f594

Worked: 2.81 76650402f3

Short description of error
This only effects my Mac version of Blender. Windows version works as intended.
While in Viewport, EEVEE, or Look Dev, random parts of object's mesh will be invisible and or break (split and flatten across body). If I viewport render or F12 in cycles everything will be fine. Only effects working in the viewport or Rendering in EEVEE

I've included a Blend file with 3 separate objects. Window and window frame parts are gone, along with portions of the wall.
Multiple sections of the human mesh is missing. If you click off then on the collections check box it will break the mesh (sometimes).
Floor slab is missing the upper plane and a side.

Viewport Bug.blend

**System Information** Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits Graphics card: AMD Radeon Pro 580 OpenGL Engine ATI Technologies Inc. 4.1 ATI-2.11.20 **Blender Version** Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 20:20, hash: `5a6ab6f594` Worked: 2.81 76650402f300 **Short description of error** This only effects my Mac version of Blender. Windows version works as intended. While in Viewport, EEVEE, or Look Dev, random parts of object's mesh will be invisible and or break (split and flatten across body). If I viewport render or F12 in cycles everything will be fine. Only effects working in the viewport or Rendering in EEVEE I've included a Blend file with 3 separate objects. Window and window frame parts are gone, along with portions of the wall. Multiple sections of the human mesh is missing. If you click off then on the collections check box it will break the mesh (sometimes). Floor slab is missing the upper plane and a side. [Viewport Bug.blend](https://archive.blender.org/developer/F7773536/Viewport_Bug.blend)

Timothy Cook commented

2019-09-24 17:06:13 +02:00

Added subscriber: @CookItOff

Mauro Fabio commented

2019-09-24 23:01:47 +02:00

Added subscriber: @MauroPfister

Mauro Fabio commented

2019-09-24 23:01:47 +02:00

Can confirm this issue.

I provided another minimal example to reproduce the bug. It only seems to occur if there are multiple material slots assigned to different parts of an object.

System Information
Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon R9 M370X OpenGL Engine ATI Technologies Inc. 4.1 ATI-2.11.20

Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 20:20, hash: 5a6ab6f594

viewport_mat_slot_bug.blend

Can confirm this issue. I provided another minimal example to reproduce the bug. It only seems to occur if there are multiple material slots assigned to different parts of an object. **System Information** Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits Graphics card: AMD Radeon R9 M370X OpenGL Engine ATI Technologies Inc. 4.1 ATI-2.11.20 **Blender Version** Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 20:20, hash: `5a6ab6f594` [viewport_mat_slot_bug.blend](https://archive.blender.org/developer/F7773774/viewport_mat_slot_bug.blend)

Philipp Oeser commented

2019-09-25 11:16:26 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-09-25 11:16:26 +02:00

Looks like a duplicate of #70106 (Objects with multiple materials are not displaying correctly - transparent faces), will merge these reports...

Philipp Oeser commented

2019-09-25 11:16:32 +02:00

Closed as duplicate of #70106

Philipp Oeser closed this issue

2019-09-25 11:16:32 +02:00

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Viewport, EEVEE, Look Dev breaks mesh. #70208