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docs: remove documentation of MESA_HPCR_CLEAR 

We haven't respected this variable for about 10 years, as the support
was removed in bc63b226bc ("xlib: remove a ton of old xlib driver
cruft").

So let's also remove the documentation.

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10281>
This commit is contained in:
Erik Faye-Lund 2021-04-16 11:07:55 +02:00 committed by Marge Bot
parent 67f46d70de
commit de0fbffb81
1 changed files with 0 additions and 7 deletions
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7
docs/xlibdriver.rst
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@ -128,13 +128,6 @@ SERVER_OVERLAY_VISUALS property:
xprop -root | grep SERVER_OVERLAY_VISUALS
HPCR Dithering
--------------
If you set the **MESA_HPCR_CLEAR** environment variable then dithering
will be used when clearing the color buffer. This is only applicable to
HP systems with the HPCR (Color Recovery) feature. This incurs a small
performance penalty.
Extensions
----------