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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-06-09 16:00:30 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-06-09 16:00:30 +0100 |
| commit | 1638a0a6c0b335dd31def93a9199f7407ae51170 (patch) | |
| tree | b0b20663df53d11fee8a50c5b3ebca078ce5471c | |
| parent | 4b54c89fbddc7aa72e5f2c5eded44e84bce70b77 (diff) | |
sna/dri: Add a comment to warn about a potential race between DRI clients
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/sna_dri.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/sna/sna_dri.c b/src/sna/sna_dri.c index 7fe9aff0..9abc66d0 100644 --- a/src/sna/sna_dri.c +++ b/src/sna/sna_dri.c @@ -376,7 +376,12 @@ sna_dri_copy_region(DrawablePtr drawable, RegionPtr region, } ValidateGC(dst, gc); - /* Invalidate src to reflect unknown modifications made by the client */ + /* Invalidate src to reflect unknown modifications made by the client + * + * XXX But what about any conflicting shadow writes made by others + * between the last flush and this request? Hopefully nobody will + * hit that race window to find out... + */ damage(src, region); /* Wait for the scanline to be outside the region to be copied */ |