In practice this gives us a context that is *compatible* with GL 2.1. On
my machine it gives a GL 3.3 or 4.3 compatibility profile context,
depending on graphics card installed.
Also fixed enum for core profile (not used yet).
Also added option for GL 3.2 compatibility profile. This will be useful
during Blender 2.8 development, until we are able to use the core
profile. On my machine this gives exactly a GL 3.2 compatibility profile
context, not 3.3 or 4.
Unfortunately there's no easy way to show a messagebox here, so just
print a warning on fstderr and exit. If we don't call exit() here we get
crashes on other blender systems (python, opensubdiv) and it can get
tricky to track the initialization state here, so just using exit()
should do the trick for now.
Load driver dynamically at runtime instead of weak-linking the
3Dconnexion framework. Driver no longer needed at build time!
Works with really old drivers (as in PowerMac old), more recent
versions, and the latest which allows us to process events on a
separate thread.
It turns out libGL from Intel crashes when calling glxewInit (where mesa, nvidia work fine),
unfortunately the only option without making larger changes to glew,
is to inline the parts of glew we're using - before the glx context is created.
The issue was caused by the following construction:
def = env['SOMETHING']
defs.append('SOMETHING_MORE')
Since first assignment was actually referencing environment option it was totally
polluted hawing weird and wonderful side effects on all other areas of Blender.
extensions, once to get final context extensions.
Not so nice because we get a warning on startup from GLEW, but at least
it GL extensions should work now.
option.
This makes sense, since contexts get created at runtime, there is little
reason to require recompilation for this.
Only works on linux currently, will be doing more OSs later
The issue was caused by using NotificationCenter which is only available
since 10.9 so trying to build blender on OSX with 10.7 SDK would fail.
Now it should be possible to build blender with SDK 10.7 and at the same
time official builds should still be doing proper weak-linking to a
notification center.
