Remove direct calls to glXWaitVideoSyncSGI and glXGetVideoSyncSGI (use glXGetProcAddressARB to find them)

[Anduin Withers]

It looks like the Linux GL ABI makes no guarantees about the extensions being directly linkable. Apparently newer Mesa has removed these symbols from libGL.

[cardoe@…]

The patch here did not compile for me. Here's a refactored version that doesn't use templates

[tino.keitel+mythtv@…]

I can confirm that this patch builds with newer Mesa (6.5.1) and SVN 11316.

[Anduin Withers]

(In [11395]) Closes #2383

New Mesa 3D stuff doesn't allow direct linking to glXGetVideoSyncSGI glXWaitVideoSyncSGI, etc (conforms to the linux ABI for GL).

If this doesn't compile for you, reopen this ticket and send your build output to the list.

Thanks to Cardoe for an updated patch.

[Stuart Auchterlonie]

Fails to compile for me

vsync.cpp: In member function 'void (* OpenGLVideoSyncPrivate::glXGetProcAddress(const char*))()':
vsync.cpp:470: error: 'glXGetProcAddressARB' was not declared in this scope

Looks like the #define GLX_GLXEXT_PROTOTYPES that was in both versions of the patch got lost. I'll submit the fix shortly.

[Stuart Auchterlonie]

(In [11397]) Closes #2383. re adds #define GLX_GLXEXT_PROTOTYPES which was missed out and is needed to allow compilation.

[anonymous]

I hope re-opening this ticket is the correct way to identify that these changesets also need applying to 20-fixes branch as well as this no longer compiles with new Mesa installed

[Anduin Withers]

(In [11610]) Closes #2383 for -fixes by applying [11395] and [11397] from trunk.

Fixes glX..() direct linking for new Mesa