(Blender 2.81) Hair particles disappear in strip mode #71916

Closed
opened 2019-11-26 05:42:17 +01:00 by Kenneth Crooker · 20 comments

System Information
Operating system: Microsoft Windows 10 Pro
Graphics card: AMD Radeon Graphics Processor

Blender Version
Broken: version: 2.81 (sub 16), branch: master, type: Release
Worked: 2.80

Short description of error
I installed the newest blender (2.81), and so far it seems amazing, but one thing irks me. In Eevee, the hair particles only work in strand mode. When I try to use strips, they disappear completely. Is there a solution to this issue?

Exact steps for others to reproduce the error
Set "Render Engine" to "Eevee"
Add hair particle system to mesh object
Set "hair type shape" to "strip" under "Hair" in "Render Properties"

EDIT: I ran the Blender via the "blender_debug_gpu_glitchworkaround" command script, and the hairs were able to display as strips. However, I still need to know how to make them work when I run the program from the default executable. I'll provide the debug output.
untitled.blend
blender_debug_output.txt
blender_system_info.txt

**System Information** Operating system: Microsoft Windows 10 Pro Graphics card: AMD Radeon Graphics Processor **Blender Version** Broken: version: 2.81 (sub 16), branch: master, type: Release Worked: 2.80 **Short description of error** I installed the newest blender (2.81), and so far it seems amazing, but one thing irks me. In Eevee, the hair particles only work in strand mode. When I try to use strips, they disappear completely. Is there a solution to this issue? **Exact steps for others to reproduce the error** Set "Render Engine" to "Eevee" Add hair particle system to mesh object Set "hair type shape" to "strip" under "Hair" in "Render Properties" **EDIT:** I ran the Blender via the "blender_debug_gpu_glitchworkaround" command script, and the hairs were able to display as strips. However, I still need to know how to make them work when I run the program from the default executable. I'll provide the debug output. [untitled.blend](https://archive.blender.org/developer/F8170117/untitled.blend) [blender_debug_output.txt](https://archive.blender.org/developer/F8169967/blender_debug_output.txt) [blender_system_info.txt](https://archive.blender.org/developer/F8169966/blender_system_info.txt)

Added subscriber: @BatteryMaster

Added subscriber: @BatteryMaster
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Added subscribers: @fclem, @lichtwerk

Added subscribers: @fclem, @lichtwerk
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@fclem: I can see lots of

GPUShaderInterface: Warning: Uniform XXX not found!

Anything we can do here?

@fclem: I can see lots of `GPUShaderInterface: Warning: Uniform XXX not found!` Anything we can do here?

In #71916#819224, @lichtwerk wrote:
@fclem: I can see lots of

GPUShaderInterface: Warning: Uniform XXX not found!

Anything we can do here?

That's what I'm wondering myself. The problem is fixed temporarily when I run "blender_debug_gpu_glitchworkaround", but I'm just wondering how that can be fixed for good.

> In #71916#819224, @lichtwerk wrote: > @fclem: I can see lots of > > `GPUShaderInterface: Warning: Uniform XXX not found!` > > Anything we can do here? That's what I'm wondering myself. The problem is fixed temporarily when I run "blender_debug_gpu_glitchworkaround", but I'm just wondering how that can be fixed for good.

Added subscriber: @Jeroen-Bakker

Added subscriber: @Jeroen-Bakker

The uniform warning is just a warning. It's harmless.

I cannot reproduce on Linux+Intel/Nvidia. Maybe @Jeroen-Bakker can repro on AMD+windows.

The uniform warning is just a warning. It's harmless. I cannot reproduce on Linux+Intel/Nvidia. Maybe @Jeroen-Bakker can repro on AMD+windows.

Added subscriber: @iss

Added subscriber: @iss

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

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

Can not reproduce on AMD+windows

Is this still an issue with latest build? https://builder.blender.org/download/

Can not reproduce on AMD+windows Is this still an issue with latest build? https://builder.blender.org/download/

I don't know. Let me see.
UPDATE: Yep. the problem still persists.

I don't know. Let me see. UPDATE: Yep. the problem still persists.

Added subscriber: @dfelinto

Added subscriber: @dfelinto

What is the "blender_debug_gpu_glitchworkaround", also did you update your graphic card drivers?

What is the "blender_debug_gpu_glitchworkaround", also did you update your graphic card drivers?
Member
> In #71916#866777, @dfelinto wrote: > What is the "blender_debug_gpu_glitchworkaround" https://developer.blender.org/diffusion/B/browse/master/release/windows/batch/blender_debug_gpu_glitchworkaround.cmd
Member

Added subscriber: @Blendify

Added subscriber: @Blendify
Member

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

Changed status from 'Needs User Info' to: 'Resolved'
Aaron Carlisle self-assigned this 2020-02-14 22:22:02 +01:00
Member

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

Added subscriber: @spacesheep011

Added subscriber: @spacesheep011

Hi, Has this been solved, cuz i'm getting the same problem and i need answers, thank you!

Hi, Has this been solved, cuz i'm getting the same problem and i need answers, thank you!

In #71916#915188, @spacesheep011 wrote:
Hi, Has this been solved, cuz i'm getting the same problem and i need answers, thank you!

I wasn't able to reproduce bug in first place, so I don't know if there is anything to be fixed.

Please make sure your GPU drivers are up to date, download latest Blender version https://builder.blender.org/download/ and click on File > Defaults > Load Factory Settings

If you have problems after these steps create new bug report.

> In #71916#915188, @spacesheep011 wrote: > Hi, Has this been solved, cuz i'm getting the same problem and i need answers, thank you! I wasn't able to reproduce bug in first place, so I don't know if there is anything to be fixed. Please make sure your GPU drivers are up to date, download latest Blender version https://builder.blender.org/download/ and click on File > Defaults > Load Factory Settings If you have problems after these steps create new bug report.

i feel dumb, i had this exact same problem, had the exact same graphics card, and the exact same issues as in this post: it used to work for me in 2.8 but no longer after 2.81, all i had to do to fix this for good, was to update my graphics card but i never thought of it until i read about it here, thank u all! i appreciate what u do.

edit:
and i guess yes, resolved.

i feel dumb, i had this exact same problem, had the exact same graphics card, and the exact same issues as in this post: it used to work for me in 2.8 but no longer after 2.81, all i had to do to fix this for good, was to update my graphics card but i never thought of it until i read about it here, thank u all! i appreciate what u do. edit: and i guess yes, resolved.
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Reference: blender/blender#71916
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