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authorChris Wilson <chris@chris-wilson.co.uk>2013-10-23 16:15:35 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2013-10-23 16:15:35 +0100
commitbd20791e8e4a9b8aa8e8dfe1cc76e91a471f5c67 (patch)
tree15c751c31bd8b6e9d60d90c2a81627b64c06f24c /man/intel.man
parentb70390b4f824afeed8f1b5a9baf79e33377405cd (diff)
man: Describe the TearFree option
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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diff --git a/man/intel.man b/man/intel.man
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@@ -134,6 +134,16 @@ disable render acceleration and only use the BLT engine.
.IP
Default: use UXA (render acceleration)
.TP
+.BI "Option \*qTearFree\*q \*q" boolean \*q
+Disable or enable TearFree updates. This option forces X to perform all
+rendering to a backbuffer prior to updating the actual display. That update
+is then performed synchronously with the vertical refresh of the display so
+that the entire update is complete before the display starts its refresh.
+That is only one frame is ever visible, preventing an unsightly tear between
+two visible differing frames.
+.IP
+Default: TearFree is disabled.
+.TP
.BI "Option \*qReprobeOutputs\*q \*q" boolean \*q
Disable or enable rediscovery of connected displays during server startup.
As the kernel driver loads it scans for connected displays and configures a