CloudCompare forum

Hi, everyone.
I'm using CloudCompare to visualize data from a profiler.
I experience very often (randomly, around every couple of minutes) this behavior



Squares apperas on the screen (only over CloudCompare, not on other softwares), and te program becames almost unusable. I can control the menu (File, Edit, ...) and toolbars, dialog appears, but I can't do nothing on the view. So, basically, it doesn't work no more. I have to close/open/reload data. More than tedious...
It happens randomly. Doesn't depend on the size of data. Not related to a particular operation I'm doing (e.g. rotating the view, selecting points, ...); sometimes I'm just staring at the points on screen, not even moving the mouse, and the issue appears.
I've updated the sw (some times ago, not recently), but the issue remained.
I'm quite sure it is somehow related to some graphic card issue. But I don't know how to fix that.
Or maybe is something related to CC itself. Again, I don't know how to fix.

Any idea?
Is there a way to gather more debug info?

Thanks!

How strange...

If it was only happening on the 3D view, it could have been an OpenGL issue. But since it impacts the whole application, it means that it's the whole graphic engine (Qt) that's impacted. Have you tried with the latest 2.14.beta version? (it relies on Qt 6 instead of Qt 5).

Never had that issue, and i'm using CC from back 2017 to say at least.

Are you sure u do get those artifacts only inside CC?

Thanks for the replies.

I never had such issues myself, and used CloudCompare for quite a lot.
I started experiencing this when I changed my laptop. That's why I'm oriented on the graphic card issue. But I see this behavior only here.
I tried updating in the past, but didn't try to update to the last version recently.

I didn't mention my PC specs. Here tey are:
- Windows 11 x64
- Processor AMD Ryzen 7 5800H with Radeon Graphics, 3201 Mhz, 8 Core(s), 16 Logical Processor(s)
- Graphic card: AMD Radeon RX 6600M

I didn't test yet if the behavior changes by forcing CloudCompare to use one the integrated graphic cart or the secondary one. I will do it right now and report.
EDIT:
Did some quick test. I'm not sure Windows' settings "Display->Graphics->Customised settings for applications" is doing something. Whichever graphic card I set for CloudCompare, I still see both cards working in Task Manager/Performance when I play with CloudCompare (e.g. I mode around a points cloud)

But you should see which one is used by CloudCompare in the Console (F8) at the beginning (after the plugins are loaded I believe)

Checked the console.
It always logs that it's using the graphic card, regardless of the "Customised settings for applications" I select.
Windows's Settings also warns that "Customised settings only apply when apps support the feature".
Maybe CloudCompare always uses the high-performance graphic card, if available?
Or is just Windows not doing what's requested?

Hard to know (Qt and Windows are doing all the magic here in our back). But at least I know the same mechanism works with NVidia...

Those little squared dots are messed up vmem. 99% chance here that the graphic driver is the only one "guilty"

I played with Window's "Customised settings for applications". As said before, from CloudCompare console it looks like it always uses the non-integrated graphic card. Although, it seems more stable these days. Seems random, though...
I'm with @c3kkos about the culprit. Had several other issues with this card.