Probe Basic OpenGL requirements don't match the documentation

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17 Dec 2023 12:40 #288392 by Unlogic
While installing Probe Basic a while back I noticed that the requirements in the documentation says:

Probe Basic Requires graphics hardware that support OpenGL 1.50 or later

But in fact Probe Basic requires OpenGL 3.2 and OpenGL Shading Language (GLSL) 1.50.

I noticed that more users on this forum had come across the same issue ( link ) so I made an issue about it on the Probe Basic GitHub page:

github.com/kcjengr/probe_basic/issues/113

 
The following user(s) said Thank You: Lcvette

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10 Mar 2024 16:56 #295586 by Odiug
Bummer!

I am using an old Dell Optiplex 980 because of it's low latency even with parport ("OpenGL version string: 2.1 Mesa 22.3.6")

Is the OpenGL requirement specific for Probe Basic or QtPyVCP in general?

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10 Mar 2024 17:15 #295591 by Unlogic
I didn't research any further into this but instead switched hardware. However I'd prefer to use the older lower latency hardware if I could.

Pixel shaders usually aren't a must in simple 3D applications so I suspect Probe Basic could be modified to work with lesser OpenGL versions if someone is willing to dig into the code.

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06 Apr 2024 16:08 #297693 by Lcvette
this is a VTK requirement, you could remove the backplotter to remove the need for VTK and older hardware will work.  the reason we use VTK is because QT did not support the currently used backplotter from LCNC.  it has had its challenges for sure.

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06 Apr 2024 16:15 #297694 by Unlogic
I actually think the VTK backplotter looks great now that I've used it for a while.

However updating the documentation to clarify the requirements for OpenGL 3.2 and OpenGL Shading Language (GLSL) 1.50 is probably a good idea for new users.

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06 Apr 2024 16:25 #297697 by Lcvette

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06 Apr 2024 16:29 #297698 by Unlogic
The documentation says:

"Probe Basic Requires graphics hardware that support OpenGL 1.50 or later"

But due to some oddities in the versions of early OpenGL versions it should actually say:

"Probe Basic requires graphics hardware that supports OpenGL 3.2 and OpenGL Shading Language (GLSL) 1.50 or later"
The following user(s) said Thank You: tommylight

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06 Apr 2024 16:38 #297700 by Lcvette
ah gotcha! will update that now! will take a few to show up as i have some unsaved work in progress
The following user(s) said Thank You: tommylight, Unlogic

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08 Apr 2024 12:37 #297807 by Frogmate
What hardware are you using to operate Probe_Basic?

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08 Apr 2024 12:47 #297808 by Unlogic
I'm currently using a HP Elitedesk 800 G2 Mini as shown here: forum.linuxcnc.org/12-milling/50559-opti...sion?start=40#287778

But make sure to buy the 65w model if possible.

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