diff options
authorThomas Hellstrom <>2017-07-04 12:55:15 +0900
committerMichel Dänzer <>2017-07-13 16:49:28 +0900
commit81fb1547772d42c527318837d4207ecdb6899e5d (patch)
parentc3b5c2ca19717b139c7de25b98827ec3efd4811c (diff)
loader/dri3: Use dri3_find_back in loader_dri3_swap_buffers_msc
If the application hasn't done any drawing since the last call, we would reuse the same back buffer which was used for the previous swap, which may not have completed yet. This could result in various issues such as tearing or application hangs. In the normal case, the behaviour is unchanged. Bugzilla: Bugzilla: Cc: [Michel Dänzer: Make Thomas' fix from bugzilla actually work as intended, write commit log]
1 files changed, 1 insertions, 1 deletions
diff --git a/src/loader/loader_dri3_helper.c b/src/loader/loader_dri3_helper.c
index 493a7f5218c..1c93e7a96d3 100644
--- a/src/loader/loader_dri3_helper.c
+++ b/src/loader/loader_dri3_helper.c
@@ -640,7 +640,7 @@ loader_dri3_swap_buffers_msc(struct loader_dri3_drawable *draw,
draw->vtable->flush_drawable(draw, flush_flags);
- back = draw->buffers[LOADER_DRI3_BACK_ID(draw->cur_back)];
+ back = draw->buffers[dri3_find_back(draw)];
if (draw->is_different_gpu && back) {
/* Update the linear buffer before presenting the pixmap */