libegl1-mesa:amd64
libegl1-mesa-drivers:amd64
libgl1-mesa-dri:amd64
libgl1-mesa-dri:i386
libgl1-mesa-glx:amd64
libgl1-mesa-glx:i386
libglapi-mesa:amd64
libglapi-mesa:i386
libgles2-mesa:amd64
libglu1-mesa:amd64
libopenvg1-mesa:amd64
libwayland-egl1-mesa:amd64
mesa-utils
xvfb

$ Xvfb :1 -screen 0 1024x768x24 +extension GLX +render -noreset >> xsession.log 2>&1 &

Initializing built-in extension Generic Event Extension
Initializing built-in extension SHAPE
Initializing built-in extension MIT-SHM
Initializing built-in extension XInputExtension
Initializing built-in extension XTEST
Initializing built-in extension BIG-REQUESTS
Initializing built-in extension SYNC
Initializing built-in extension XKEYBOARD
Initializing built-in extension XC-MISC
Initializing built-in extension SECURITY
Initializing built-in extension XINERAMA
Initializing built-in extension XFIXES
Initializing built-in extension RENDER
Initializing built-in extension RANDR
Initializing built-in extension COMPOSITE
Initializing built-in extension DAMAGE
Initializing built-in extension MIT-SCREEN-SAVER
Initializing built-in extension DOUBLE-BUFFER
Initializing built-in extension RECORD
Initializing built-in extension DPMS
Initializing built-in extension Present
Initializing built-in extension DRI3
Initializing built-in extension X-Resource
Initializing built-in extension XVideo
Initializing built-in extension XVideo-MotionCompensation
Initializing built-in extension SELinux
Initializing built-in extension GLX

$ glxinfo -display :1

name of display: :1
Xlib:  extension "GLX" missing on display ":1".
...
Error: couldn't find RGB GLX visual or fbconfig
Xlib:  extension "GLX" missing on display ":1".
...
Error: couldn't find RGB GLX visual or fbconfig

Xlib:  extension "GLX" missing on display ":1".
...

The XKEYBOARD keymap compiler (xkbcomp) reports:
> Internal error:   Could not resolve keysym XF86AudioMicMute
Errors from xkbcomp are not fatal to the X server