misc/183507: Borderless window's rendering order wrong with Intel KMS

Johannes Lundberg johannes at brilliantservice.co.jp
Thu Oct 31 01:20:00 UTC 2013

>Number:         183507
>Category:       misc
>Synopsis:       Borderless window's rendering order wrong with Intel KMS
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Oct 31 01:20:00 UTC 2013
>Originator:     Johannes Lundberg
>Release:        10.0 BETA1
FreeBSD PC1-12-0007 10.0-BETA1 FreeBSD 10.0-BETA1 #0 r256420: Sun Oct 13 03:46:18 UTC 2013     root at snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC  i386
On a system with X11 and openbox window manager windows get render in correct order as long as they have border (window decorations). If I create a borderless window and configure it to stay always on top, it stays on top of other windows that have a border but it does not stay on top of windows that are borderless.

Same result if run without window manager.

On a machine with Intel HD4000 graphics this happens only with the Intel driver. This problem does NOT occur with vesa driver or on vmware with vmware driver.

This problem did not exist in HEAD about two months ago. 

Open two borderless x11 windows, configure window 1 to stay always on top and give focus to window 2. Window 2 should stay behind window 1 but it does not.


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