Restores proper immediate tearing swap behaviour for
OpenGL bufferswap under DRI3/Present.
Cc: "10.3 10.4" <mesa-sta...@lists.freedesktop.org>
v2: Add Frank Binns signed off by for his original earlier
patch from April 2014, which is identical to this one, and
Chris Wilsons reviewed tag from May 2014 for that patch, ergo
also for this one.
Signed-off-by: Frank Binns <frank.bi...@imgtec.com>
Signed-off-by: Mario Kleiner <mario.kleiner...@gmail.com>
Reviewed-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
src/glx/dri3_glx.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/glx/dri3_glx.c b/src/glx/dri3_glx.c
index 5796491..c53be1b 100644
--- a/src/glx/dri3_glx.c
+++ b/src/glx/dri3_glx.c
@@ -1518,6 +1518,7 @@ dri3_swap_buffers(__GLXDRIdrawable *pdraw, int64_t
target_msc, int64_t divisor,
xcb_connection_t *c = XGetXCBConnection(dpy);
struct dri3_buffer *back;
int64_t ret = 0;
+ uint32_t options = XCB_PRESENT_OPTION_NONE;
unsigned flags = __DRI2_FLUSH_DRAWABLE;
if (flush)
@@ -1557,6 +1558,9 @@ dri3_swap_buffers(__GLXDRIdrawable *pdraw, int64_t
target_msc, int64_t divisor,
if (target_msc == 0)
target_msc = priv->msc + priv->swap_interval * (priv->send_sbc -
priv->recv_sbc);
+ if (priv->swap_interval == 0)
+ options |= XCB_PRESENT_OPTION_ASYNC;
+
back->busy = 1;
back->last_swap = priv->send_sbc;
xcb_present_pixmap(c,
@@ -1570,7 +1574,7 @@ dri3_swap_buffers(__GLXDRIdrawable *pdraw, int64_t
target_msc, int64_t divisor,
None, /* target_crtc
*/
None,
back->sync_fence,
- XCB_PRESENT_OPTION_NONE,
+ options,
target_msc,
divisor,
remainder, 0, NULL);
--
1.9.1
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