Cycles HIP RT geometry artifacts #109415

New Issue

Nicole Ruiz · 2023-06-27T19:43:28+02:00

Nicole Ruiz commented

2023-06-27 19:43:28 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon RX 6600 ATI Technologies Inc. 4.5.0 Core Profile Context 23.5.2.230523

Blender Version
Broken: version: 3.6.0, branch: blender-v3.6-release, commit date: 2023-06-27 08:08, hash: c7fc78b81ecb
Worked: 3.5.1

Mesh in blender cycles looks weird, some faces in the geometry don't show correctly in Blender 3.6 with the new HIP RT

Just installed and opened blender, turned on HIP RT in the settings tab and then opened a file with a model i made with blender 3.5.1 and switched to cycles.

i attach a screenshot of how it looks with HIP RT and how it's supposed to look (how it looks with HIP RT deactivated)

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: AMD Radeon RX 6600 ATI Technologies Inc. 4.5.0 Core Profile Context 23.5.2.230523 **Blender Version** Broken: version: 3.6.0, branch: blender-v3.6-release, commit date: 2023-06-27 08:08, hash: `c7fc78b81ecb` Worked: 3.5.1 Mesh in blender cycles looks weird, some faces in the geometry don't show correctly in Blender 3.6 with the new HIP RT Just installed and opened blender, turned on HIP RT in the settings tab and then opened a file with a model i made with blender 3.5.1 and switched to cycles. i attach a screenshot of how it looks with HIP RT and how it's supposed to look (how it looks with HIP RT deactivated)

Screenshot 2023-06-27 144213.png

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Screenshot 2023-06-27 144143.png

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Nicole Ruiz added the

labels 2023-06-27 19:43:28 +02:00

YimingWu referenced this issue

2023-06-28 04:47:20 +02:00

HIP related bugs #109431

Brecht Van Lommel added

Module

Render & Cycles

Status

Needs Info from Developers

and removed

labels 2023-07-04 14:02:29 +02:00

Brecht Van Lommel commented

2023-07-04 14:02:54 +02:00

CC @BrianSavery @salipour.

Brecht Van Lommel changed title from ~~Weird Cycles viewport bug with the new RT AMD. Blender 3.6 LTS~~ to Cycles HIP RT geometry artifacts

2023-07-04 14:04:26 +02:00

Brian Savery (AMD) commented

2023-07-06 05:29:52 +02:00

Hi Nicole. Can you try it with this driver? https://www.amd.com/en/support/kb/release-notes/rn-rad-win-22-40-51-06-blender-3-6-beta

Mentioned in the release notes.

Hi Nicole. Can you try it with this driver? https://www.amd.com/en/support/kb/release-notes/rn-rad-win-22-40-51-06-blender-3-6-beta Mentioned in the release notes.

Nicole Ruiz commented

2023-07-06 06:00:11 +02:00

I've installed that driver and tried to open the model again, but the viewport looks the same for some reason, it also looks the same in other files i've tested.

all this models have .PNG textures and the materials are based on the basic Principled BSDF.

AMD driver version: 22.40.51.06

Little update: it seems that the models only look like this in the viewpoint views (top, bottom, right, left, front and back), in free and camera view the models look normal

I've installed that driver and tried to open the model again, but the viewport looks the same for some reason, it also looks the same in other files i've tested. all this models have .PNG textures and the materials are based on the basic Principled BSDF. AMD driver version: 22.40.51.06 Little update: it seems that the models only look like this in the viewpoint views (top, bottom, right, left, front and back), in free and camera view the models look normal

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Pratik Borhade commented

2023-07-06 06:36:26 +02:00

Possibly related: #108099

Brian Savery (AMD) commented

2023-07-06 14:55:24 +02:00

Possibly related: #108099

That is possible. @NicoleRu can you post a screenshot of your system preferences for HIP devices? What CPU are you on?

> Possibly related: #108099 That is possible. @NicoleRu can you post a screenshot of your system preferences for HIP devices? What CPU are you on?

Nicole Ruiz commented

2023-07-06 23:46:08 +02:00

Sure, i'm using an RX 6600 8GB with an Intel I3-10105 3.7GHz

Screenshot 2023-07-06 184340.png

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Brian Savery (AMD) commented

2023-07-10 04:13:25 +02:00

We cannot reproduce this on our side. Can you send us the mesh?

Nicole Ruiz commented

2023-07-11 00:00:42 +02:00

sure, here it is

Also, it seems that this error happens in the orthographic view too sometimes, but only sometimes

sure, here it is Also, it seems that this error happens in the orthographic view too sometimes, but only sometimes

GW girl hospital.blend

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Brecht Van Lommel commented

2023-10-06 15:45:35 +02:00

I believe this should be solved now. There was a known issue in 3.6.0 that was fixed in later 3.6 LTS versions and 4.0. If the issue persists, I can reopen the report.

Brecht Van Lommel closed this issue

2023-10-06 15:45:38 +02:00

Blender Bot added

Status

Archived

and removed

Status

Needs Info from Developers

labels 2023-10-06 15:45:40 +02:00

Nicole Ruiz commented

2024-04-05 15:48:20 +02:00

Sorry, the issue is still present in Blender 4.0 and Blender 4.1, using HIP and looking at the model from the top, down or any side, in orthographic view mode

Screenshot from Blender 4.1

Sorry, the issue is still present in Blender 4.0 and Blender 4.1, using HIP and looking at the model from the top, down or any side, in orthographic view mode Screenshot from Blender 4.1

Screenshot 2024-04-05 104802.png

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Brecht Van Lommel reopened this issue

2024-04-15 15:06:07 +02:00

Blender Bot added

and removed

labels 2024-04-15 15:06:09 +02:00

Brecht Van Lommel commented

2024-04-15 15:06:43 +02:00

Thanks for testing. You can try updating to the latest AMD drivers if you haven't already.

@salipour any idea what might be going on here?

Thanks for testing. You can try updating to the latest AMD drivers if you haven't already. @salipour any idea what might be going on here?

Brecht Van Lommel added

Status

Needs Information from User

and removed

Status

Confirmed

labels 2024-04-15 15:06:55 +02:00

Alaska commented

2024-04-17 04:58:53 +02:00

This issue is probably related to #117961 because the issue only occurs in orthographic mode, and it disappears as the "End clip distance" is reduced. However, the "End clip distance" does need to be tiny to fully remove this issue (roughly 5 meters).

This issue can be reproduced with a plane with small trianges for simpler testing.

This issue is probably related to #117961 because the issue only occurs in orthographic mode, and it disappears as the "End clip distance" is reduced. However, the "End clip distance" does need to be tiny to fully remove this issue (roughly 5 meters). This issue can be reproduced with a plane with small trianges for simpler testing.

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Cycles HIP RT geometry artifacts #109415