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Set the transformation matrix to the unity matrix to avoid spurious cursor

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jumps (#852841)
This commit is contained in:
Peter Hutterer 2012-09-20 15:58:17 +10:00
parent 5ec270cf59
commit 25c4b40ffb
2 changed files with 41 additions and 1 deletions
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32
0001-dix-set-the-device-transformation-matrix.patch Normal file
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@ -0,0 +1,32 @@
From 171059409177652b9b7af31506dd8ee0e018330d Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 20 Sep 2012 01:22:32 +1000
Subject: [PATCH] dix: set the device transformation matrix
The property handler is registered after setting the property, so
dev->transform remains as all-zeros. That causes pixman_f_transform_invert()
to fail (transformAbsolute()) and invert remains as garbage. In some cases,
this may then cause a cursor jump to 0,0.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
dix/devices.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/dix/devices.c b/dix/devices.c
index 46c759c..3cacbeb 100644
--- a/dix/devices.c
+++ b/dix/devices.c
@@ -306,6 +306,9 @@ AddInputDevice(ClientPtr client, DeviceProc deviceProc, Bool autoStart)
/* unity matrix */
memset(transform, 0, sizeof(transform));
transform[0] = transform[4] = transform[8] = 1.0f;
+ dev->transform.m[0][0] = 1.0;
+ dev->transform.m[1][1] = 1.0;
+ dev->transform.m[2][2] = 1.0;
XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_TRANSFORM),
XIGetKnownProperty(XATOM_FLOAT), 32,
--
1.7.11.2

10
xorg-x11-server.spec
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@ -43,7 +43,7 @@
Summary: X.Org X11 X server
Name: xorg-x11-server
Version: 1.13.0
Release: 4%{?gitdate:.%{gitdate}}%{dist}
Release: 5%{?gitdate:.%{gitdate}}%{dist}
URL: http://www.x.org
License: MIT
Group: User Interface/X
@ -115,6 +115,10 @@ Patch7053: 0001-scan-pci-after-probing-devices.patch
Patch7054: 0001-config-udev-ignore-change-on-drm-devices.patch
# Bug 852841 - Mouse jumps to edges / corners when using an absolute input
# device (ie virtual machine usb tablet)
Patch7055: 0001-dix-set-the-device-transformation-matrix.patch
%global moduledir %{_libdir}/xorg/modules
%global drimoduledir %{_libdir}/dri
%global sdkdir %{_includedir}/xorg
@ -587,6 +591,10 @@ rm -rf $RPM_BUILD_ROOT
%{xserver_source_dir}
%changelog
* Thu Sep 20 2012 Peter Hutterer <peter.hutterer@redhat.com> 1.13.0-5
- Set the transformation matrix to the unity matrix to avoid spurious cursor
jumps (#852841)
* Fri Sep 14 2012 Dave Airlie <airlied@redhat.com> 1.13.0-4
- fix bug when hotplugging a monitor causes oops