This comes from Mesa commit acdcef6788beaa2a1532e13ff84c3e246b8025ed
Previously, each driver had to tell DRI2 what GL driver object should
be loaded. Originally for a 2D driver that was a matter of giving the
constant string for the vendor name, same as the driver's name. For a
driver that's trying to handle multiple generations of hardware with
different Mesa driver filenames, the driver had to bake in a mapping
from PCI ID to the appropriate driver name in Mesa, which seems like a
pretty awful layering violation (and one that was fixed with DRI3)
As of January, Mesa now handles the mapping from a DRI fd to the
driver name on its own, but the AIGLX loader still relies on DRI2 for
choosing the filename. Instead of propagating the PCI ID list from
each 2D driver to the modesetting driver, import a central copy of the
PCI ID list so that drivers can stop handling this themselves. (Some
day, when AIGLX transitions to EGL, we can drop the DRI2 filename
setup entirely).
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
470d97e1d1