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man: Update notes about TearFree 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-06-06 11:39:57 +01:00
parent 1f943a7d92
commit 0ebcef4f2e
1 changed files with 5 additions and 3 deletions
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@ -150,9 +150,11 @@ the screen is then performed synchronously with the vertical refresh of the
display so that the entire update is completed before the display starts its
refresh. That is only one frame is ever visible, preventing an unsightly tear
between two visible and differing frames. Note that this replicates what the
compositing manager should be doing, so it is not advisable to enable both.
However, some compositing managers do cause tearing, and if the outputs are
rotated, there may will still be tearing without TearFree enabled.
compositing manager should be doing, however TearFree will redirect the
compositor updates (and those of fullscreen games) directly on to the scanout
thus incurring no additional overhead in the composited case. Also note that
not all compositing managers prevent tearing, and if the outputs are
rotated, there will still be tearing without TearFree enabled.
.IP
Default: TearFree is disabled.
.TP