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loader/dri3: Only wait for back buffer fences in dri3_get_buffer

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We don't need to wait before drawing to the fake front buffer, as front
buffer rendering by definition is allowed to produce artifacts.

Fixes hangs in some cases when re-using the fake front buffer, due to it
still being busy (i.e. in use for presentation).

Cc: mesa-stable@lists.freedesktop.org
Bugzilla: https://bugs.freedesktop.org/106404
Bugzilla: https://bugs.freedesktop.org/107757
Tested-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
(cherry picked from commit aefac10fec)
This commit is contained in:
Michel Dänzer 2018-09-04 12:18:19 +02:00 • committed by Dylan Baker
parent eb6abe40f0
commit e89a4589c0
1 changed files with 3 additions and 1 deletions
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4
src/loader/loader_dri3_helper.c
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@ -1736,7 +1736,9 @@ dri3_get_buffer(__DRIdrawable *driDrawable,
buffer = new_buffer;
draw->buffers[buf_id] = buffer;
}
dri3_fence_await(draw->conn, draw, buffer);
if (buffer_type == loader_dri3_buffer_back)
dri3_fence_await(draw->conn, draw, buffer);
/*
* Do we need to preserve the content of a previous buffer?