Some machines have hardware-specific GL drivers that do EGL and GLES (many ARM
boards). Others have their own EGL/GLES drivers and provide a Mesa DRI driver
(EMGD). Previously adding Mesa, for software GL/GLX rendering in the first case
and hardware GLX in the second, involved bbappends and changing Mesa to be
machine-specific.
By adding a just-GL Mesa the machine definition can combine it with the hardware
drivers cleanly.
Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
