[Mesa-dev] [PATCH 0/3] Support for Android RGBX/RGBA formats

[Adam Jackson]

On Mon, 2016-04-25 at 15:21 +0100, Emil Velikov wrote:

> Last a I saw you guys were backporting all of mesa, correct ?
> Are you OK with us deprecating compat. between DRI(2) modules and
> loaders (GL/EGL/gbm) that are, say 3 years apart ?

At this point that's probably fine. RHEL6 still includes DRI1 drivers
so changing libGL is pretty rough there, but at least for graphics
we're soon going to be done with hardware enablement for RHEL6. For EL7
(and going forward) we just need a mutually compatible libGL, drivers,
and X server. Our rebases come out on the even-numbered minor RHEL
versions which are 12-18 months apart so a three year window works just
fine. Obviously we'd prefer fewer flag days (and possibly some amount
of slip, one "new" interface and one "compat" interface always
coexisting to make bisection easier).

We don't really support different libGL and drivers, the issue is
mostly keeping xserver's loader working.

While we're on the subject: if someone wanted to fix framebuffer init
in Mesa so that window-system buffers were allocated as needed (z/s and
friends), we could change xserver (and EGL) to be less of a polynomial
explosion of fbconfigs...

- ajax