CGAL users discussion list

[David Rochera <>]

Sebastien, the latest stable version of CGAL, 5.2.

Thank you very much, Maxime Gimeno! :)

On Thu, 7 Jan 2021 at 09:00, Maxime Gimeno <> wrote:

I opened an issue and I've been working on a fix since yesterday: https://github.com/CGAL/cgal/issues/5334

Le jeu. 7 janv. 2021 à 08:47, Sebastien Loriot <> a écrit :

What version of CGAL are you using?

Sebastien

On 1/5/21 8:47 PM, David Rochera wrote:
>> Hello, I'm new in CGAL and in this mailing list,
>>
>> I have been trying for many days to solve an OpenGL problem I have
>> when running some CGAL examples and demos but I could not solve it
>> yet. If some of you know the answer to this question I would be very
>> grateful. :)
>>
>> I'm using a fairly new Mac OS, where I have installed the last
>> versions of CGAL, Qt5 and many other optional libraries. The OpenGL
>> support was discontinued for Apple some years ago, so that my GL Core
>> version is up to 4.1. The problem is that after compiling and running
>> some CGAL examples and demos I get the warning:
>>
>> GL 4.3 context initialization failed.
>>
>> Using context  2 . 1 GL
>>
>>
>> This results in not being able to see vertices nor edges in the
>> Basic_viewer. I'm wondering how the 4.1 context could be set in order
>> to avoid such an issue. Looking at the CGAL Qt files, I can guess
>> that the 4.3 context is tried to be set and, if not found, the ES 2.0
>> context is displayed instead. Nevertheless, I guess there should be a
>> way to display the highest possible Mac OS context 4.1 because the
>> Polyhedron demo, for instance, works fine for me. If I run it, I can
>> see vertices and edges and indeed I get:
>>
>> Using context  4 . 1 GL
>>
>>
>> If the problem is regarding the OS, there should be many affected
>> CGAL users but I haven't found many people speaking about it in any
>> forum... so I don't know if I'm missing something.
>>
>>
>> Thank you very much and best wishes,
>>
>>
>> David
>>
>
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