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authorMario Kleiner <mario.kleiner@tuebingen.mpg.de>2010-11-22 04:11:07 +0100
committerAlex Deucher <alexdeucher@gmail.com>2010-12-01 20:30:36 -0500
commit122536ee0aeb1eef1a9d80d5e464dcb423dc2837 (patch)
tree23da02481fa061939261b30f42a8a4f4eb35444f /man
parent0de680730294bd623f6b3e189faa7b88a09d3a2a (diff)
ddx/ati: Add option "SwapbuffersWait" to control vsync of DRI2 swaps.
A new optional kms driver option "SwapbuffersWait" is defined for xorg.conf, which defaults to "on". If "on", DRI2 bufferswaps will be synchronized to vsync, otherwise not. This currently only affects copy-swaps, not pageflipped swaps. It also requires a swap_interval setting of zero by the OpenGL client. Ideally, we'd provide a way for dri2 to pass the current swap interval to the ddx so we could change this dynamically. Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Diffstat (limited to 'man')
-rw-r--r--man/radeon.man11
1 files changed, 11 insertions, 0 deletions
diff --git a/man/radeon.man b/man/radeon.man
index ede41b9e..103b4651 100644
--- a/man/radeon.man
+++ b/man/radeon.man
@@ -364,6 +364,17 @@ Color tiling will be automatically disabled in interlaced or doublescan screen m
.br
The default value is
.B on.
+.TP
+.BI "Option \*qSwapbuffersWait\*q \*q" boolean \*q
+This option controls the behavior of glXSwapBuffers and glXCopySubBufferMESA
+calls by GL applications. If enabled, the calls will avoid tearing by making
+sure the display scanline is outside of the area to be copied before the copy
+occurs. If disabled, no scanline synchronization is performed, meaning tearing
+will likely occur. Note that when enabled, this option can adversely affect
+the framerate of applications that render frames at less than refresh rate.
+.IP
+The default value is
+.B on.
.TP
.BI "Option \*qIgnoreEDID\*q \*q" boolean \*q
Do not use EDID data for mode validation. DDC is still used