Deprecated in this case will most likely mean it will still be part of macOS for quite a while. There are simply too many existing applications using it. GEM will still build and work for the foreseeable future (5+ years).

We're discussing it on the Openframeworks list as well: http://dev.openframeworks.cc/pipermail/of-dev-openframeworks.cc/2018-June/thread.html

On Jun 8, 2018, at 2:44 AM, pd-list-request@lists.iem.at wrote:

Date: Thu, 7 Jun 2018 20:55:25 -0300
From: Alexandre Torres Porres <porres@gmail.com>
To: Pd-List <pd-list@lists.iem.at>
Subject: [PD] apple deprecates opengl
Message-ID:
<CAEAsFmhcP6WsoXTbF3T3e9X8zb5S0Rvhk8Cv_UxR2fwPzBOjoA@mail.gmail.com>
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What is the impact of this in Pd?

https://www.anandtech.com/show/12894/apple-deprecates-opengl-across-all-oses

--------
Dan Wilcox
@danomatika
danomatika.com
robotcowboy.com