aboutsummaryrefslogtreecommitdiff
path: root/X11/extensions/damageproto.txt
diff options
context:
space:
mode:
Diffstat (limited to 'X11/extensions/damageproto.txt')
-rw-r--r--X11/extensions/damageproto.txt11
1 files changed, 6 insertions, 5 deletions
diff --git a/X11/extensions/damageproto.txt b/X11/extensions/damageproto.txt
index 54910adc5..1f254d4a3 100644
--- a/X11/extensions/damageproto.txt
+++ b/X11/extensions/damageproto.txt
@@ -191,20 +191,21 @@ DamageSubtract
damage: DAMAGE
repair: Region or None
- parts: Region
+ parts: Region or None
Synchronously modifies the regions in the following manner:
If repair is None:
- 1) parts = damage
+ 1) if parts is not None, parts = damage
2) damage = <empty>
Otherwise:
- 1) parts = damage INTERSECT repair
- 2) damage = damage - parts
- 3) Generate DamageNotify for remaining damage areas
+ 1) tmp = damage INTERSECT repair
+ 2) damage = damage - tmp
+ 3) if parts is not None, parts = tmp
+ 4) Generate DamageNotify for remaining damage areas
DamageAdd