glx: Fix glxUseXFont for glxWindow and glxPixmaps

The current implementation of glxUseXFont requires creating
a temporary pixmap and graphics context, which requires a real
old-school X11 Window, not a glxDrawable. This patch changes
things so that glxUseXFont will also accept a glxWindow or
glxPixmap, and lookup the underlying X11 Drawable. Without
this patch glxUseXFont generates a giant stream of Xerrors
about bad drawables and bad graphics contexts.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54372

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Brian Paul <brianp@vmware.com>
(cherry picked from commit 291be28476ea60c6fb1eb2a882e2e25def5d3735)
nouveau: 3d textures are unsupported, limit 3d levels to 1

Ideally there would be a swrast fallback, but the driver isn't ready for
that. This should avoid crashes if someone tries to use 3d textures
though.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 5524af81365d51757ef68a8e62dbd426d0b07184)
st/gbm: fix order of arguments passed to is_format_supported

Reported by Coverity

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 742158b51ee9814e93a913cf020fba10608d73be)
winsys/radeon: Use separate caching buffer manager for each set of flags

Otherwise the caching buffer manager may return a buffer which was created
with a different set of flags, which can cause trouble.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit 3ede67a4c6d77892296ffc5568ddf3accaa1af99)

Conflicts:
	src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
st/mesa: use pipe_sampler_view_release for releasing sampler views

This fixes a crash when exiting Firefox. I have really no idea how Firefox
does it. It seems to involve multiple contexts and multithreading.

v2: added an XXX comment

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81680

Acked by Christian König.
Cc: 10.2 10.3 <mesa-stable@lists.freedesktop.org>
Tested-by: Benjamin Bellec <b.bellec@gmail.com>

(cherry picked from commit 833d698ad5d7dc7598b798653e1413f4379ec476)