damage: Must translate initial window damage by window offset

Damage is reported relative to the drawable origin, but the window
borderClip is absolute. Translate the region by the window position
before reporting damage to adjust.

Reported-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>

diff --git a/damageext/damageext.c b/damageext/damageext.c
index a942ffa..cf6b63b 100644 (file)
--- a/damageext/damageext.c
+++ b/damageext/damageext.c
@@ -223,7 +223,9 @@ ProcDamageCreate(ClientPtr client)
 
     if (pDrawable->type == DRAWABLE_WINDOW) {
         pRegion = &((WindowPtr) pDrawable)->borderClip;
+        RegionTranslate(pRegion, -pDrawable->x, -pDrawable->y);
         DamageReportDamage(pDamageExt->pDamage, pRegion);
+        RegionTranslate(pRegion, pDrawable->x, pDrawable->y);
     }
 
     return Success;