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Re: Help needed to update our use of OpenGL

From: John W. Eaton
Subject: Re: Help needed to update our use of OpenGL
Date: Wed, 12 Sep 2018 13:00:13 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 09/12/2018 11:21 AM, mmuetzel wrote:
What needs to be changed with the way lighting is handled?
I am by no means an expert in OpenGL. But I don't remember using deprecated
functions when I added the light graphic object.
If you could point to the problematic functions or constructs, I might be
able to have a look at it.

If someone else wants to help or prefer to do that, I won't mind either. ;-)

To begin, see this page:


also this page specifically about lighting notes that the fixed-pipeline glMaterial and glLight functions are part of the legacy APIs:


Here's a interesting blog post about the difficulty (or not, depending on the specific features used) of moving to current core OpenGL functionality:


From what I see with Octave, it looks like we have some work to do. OTOH, our use of OpenGL is fairly localized and does not seem overly complicated, so maybe it will not be an impossible task.


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