From: Michel Dänzer <[email protected]>
This can make a significant difference for performance with some extreme
test cases such as vblank_mode=0 glxgears.
Fixes: 1e3218bc5ba2 ("loader/dri3: Overhaul dri3_update_num_back")
Cc: "12.0 11.2" <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97549
Signed-off-by: Michel Dänzer <[email protected]>
---
I could swear I tested vblank_mode=0 glxgears with my previous change
and couldn't measure any difference, but I can now, so I must have
messed up my previous testing somehow... Apologies for any inconvenience
this caused.
src/loader/loader_dri3_helper.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/src/loader/loader_dri3_helper.c b/src/loader/loader_dri3_helper.c
index 86ae5ae..3ce0352 100644
--- a/src/loader/loader_dri3_helper.c
+++ b/src/loader/loader_dri3_helper.c
@@ -70,10 +70,8 @@ dri3_update_num_back(struct loader_dri3_drawable *draw)
{
if (draw->flipping)
draw->num_back = 3;
- else if (draw->vtable->get_swap_interval(draw) != 0)
- draw->num_back = 2;
else
- draw->num_back = 1;
+ draw->num_back = 2;
}
void
--
2.9.3
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