This involved wrapping some GCOps to get the proper behavior
when using X11 raster ops mixed with OpenGL (see driWrap.c).
This extends the AppleDRI protocol with create and destroy pixmap
functions.
The dri.c code has been extended quite a bit to enable this, and
to initialize the wrapping of CreateGC for GCOps.
This has been tested with tests/glxpixmap and proven to work with
the new libGL. Existing applications seem to work fine too. Redraws
all appear to be correct.
There may be some bugs lurking that I haven't found yet. I plan
to drive them out by extending the libGL test suite.
(cherry picked from commit 630518766b01022c49fe3a9e7d501808f71b06e2)
Leaving xpr unflattened since we want modularity to replace that with xpc (XPluginComposite) at some point
(cherry picked from commit 48e6a75fbdd0fee86e364f02ace83f20b312a2b2)