topic Re: Diagnostic Shader causes application to stop responding. in Alias Forum

Diagnostic Shader causes application to stop responding.

p_robo2RJZC — Tue, 28 Sep 2021 17:03:05 GMT

The mulcol shader causes Alias to permanently hang upon selecting the shader, with the progress bar remaining at 0:00 and never fully completing. It doesn't happen every time I select mulcol, but it seems to have the potential to happen in any file no matter how simple or complex the scene is, even occurring in situations where only a single subd object is visible. I'm using Alias Surface 2021.2.

Re: Diagnostic Shader causes application to stop responding.

BarryKimball — Thu, 30 Sep 2021 04:52:09 GMT

What are your computer details...GPU ? driver?

Re: Diagnostic Shader causes application to stop responding.

p_robo2RJZC — Thu, 30 Sep 2021 16:38:09 GMT

My GPU is a Quadro P5000 with driver 26.21.14.3194 (9/19/2019)

Re: Diagnostic Shader causes application to stop responding.

BarryKimball — Thu, 30 Sep 2021 16:47:06 GMT

Ok...the GPU is certified but the driver # isn't a valid driver number, as far as I am aware.

The certified Alias driver for that GPU is Nvidia 462.31

Please try downloading and using this driver...(select the Alias app from the list and locate your GPU)

https://knowledge.autodesk.com/certified-graphics-hardware

Re: Diagnostic Shader causes application to stop responding.

p_robo2RJZC — Wed, 06 Oct 2021 16:20:37 GMT

Thanks, I'll try this and let you know whether it fixes the issue. Still waiting to see if it happens again.

Re: Diagnostic Shader causes application to stop responding.

lars.stalberg — Wed, 27 Oct 2021 12:12:09 GMT

Take a look at your diagnostic shading settings...
If you have setting for very, very tight values and the model is large, shading can get stuck.

Example of a setting to watch out for:
- Tolerance (small) <0.01
- Accurate
- Limit edge length
- Max edge length (to tiny value) <1 mm or even smaller...