diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2015-12-24 15:42:37 +0000 |
|---|---|---|
| committer | Sean V Kelley <seanvk@posteo.de> | 2016-11-16 10:06:52 -0800 |
| commit | 6b8fbf6ea348bb2970af2df9b8e0b3493e3e86f5 (patch) | |
| tree | 82c96262ba2677038b7e8fbaa0213a6325af5616 | |
| parent | 3a7547be5a49106dabfeb594869a85fa03a6b9b8 (diff) | |
va/x11: Require synchronisation to vblank with DRI2SwapBuffers
By passing divisor=0, we imply we do not care about synchronisation of
this request to the vertical refresh - the spec says that if we miss the
target frame, the swap will be presented as quickly as possible and may
forgo waiting until the next vblank. By using divisor=1, we request that
the swap be presented upon the vertical refresh immediately following
recipe, enforcing the synchronisation to vblank and avoiding tearing.
Reported-and-tested-by: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Sean V Kelley <seanvk@posteo.de>
| -rw-r--r-- | va/x11/dri2_util.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/va/x11/dri2_util.c b/va/x11/dri2_util.c index 1245432..4fddf37 100644 --- a/va/x11/dri2_util.c +++ b/va/x11/dri2_util.c @@ -95,8 +95,9 @@ dri2SwapBuffer(VADriverContextP ctx, struct dri_drawable *dri_drawable) if (dri2_drawable->has_backbuffer) { if (gsDRI2SwapAvailable) { CARD64 ret; - VA_DRI2SwapBuffers(ctx->native_dpy, dri_drawable->x_drawable, 0, 0, - 0, &ret); + VA_DRI2SwapBuffers(ctx->native_dpy, dri_drawable->x_drawable, + 0, 1, 0, + &ret); } else { xrect.x = 0; xrect.y = 0; |