Public bug reported:

Configuring PRIME render offloading requires changes to the X server
which have been accepted upstream but are not yet present in any
release. These changes do not break the driver ABI and should be safe to
backport to existing X servers shipped in distributions like Ubuntu.

The required commits are:

* 7f962c70b6d9c346477f23f6c15211e749110078 - xsync: Add resource inside of 
SyncCreate, export SyncCreate
* 37a36a6b5b887d5c5a17a6931ceba8ad5d1bb6d5 - GLX: Add a per-client vendor 
mapping
*  8b67ec7cc6fda243480a5a8ca118b66242f3eb2c- GLX: Use the sending client for 
looking up XID's
* 56c0a71fdd94a008e5d746261f70a713c4767f93 - GLX: Add a function to change a 
clients vendor list
* b4231d69028adc8123801a7552b40a15ea928d1b - GLX: Set 
GlxServerExports::{major,minor}Version

These commits must be backported to an X.org X server of at least
version 1.20, as this is the first version with support for server-side
GLVND.

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1839555

Title:
  X server backports for PRIME render offloading

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