From 6c1accce87c9bd640c1b4bbc49bae7d44b1cc97b Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sun, 4 May 2008 21:51:08 -0700
Subject: [PATCH] Empty the borderClip of manual redirect windows. (bug 15823)

Thanks to Owen Taylor for root-causing this one.

If a TreatAsTransparent window has any area in the borderClip, that will be
added to the totalClip region for use by other windows. That's wrong.
Instead, simply empty the borderClip for TreatAsTransparent windows right up
front.
---
 mi/mivaltree.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mi/mivaltree.c b/mi/mivaltree.c
index 74483e354..d9d07caad 100644
--- a/mi/mivaltree.c
+++ b/mi/mivaltree.c
@@ -255,7 +255,11 @@ miComputeClips (
     if (pParent->redirectDraw != RedirectDrawNone)
     {
 	if (miSetRedirectBorderClipProc)
+	{
+	    if (TreatAsTransparent (pParent))
+		REGION_EMPTY (pScreen, universe);
 	    (*miSetRedirectBorderClipProc) (pParent, universe);
+	}
 	REGION_COPY(pScreen, universe, &pParent->borderSize);
     }
 #endif