The NVIDIA binary driver doesn't support RandR 1.2. Test for the NV-CONTROL
extension and assume the binary driver is running when this extension is
detected. Then use Xinerama to query the screen offset and set the
transformation matrix accordingly.
User commands:
xsetwacom set "device name" MapToOutput HEAD-0
xsetwacom set "device name" MapToOutput HEAD-1
Signed-off-by: Peter Hutterer <peter.hutte...@who-t.net>
---
configure.ac | 2 +-
man/xsetwacom.man | 3 +-
tools/xsetwacom.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 66 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index 408e75f..c151e54 100644
--- a/configure.ac
+++ b/configure.ac
@@ -53,7 +53,7 @@ AC_CHECK_LIB([m], [rint])
PKG_CHECK_MODULES(XORG, [xorg-server >= 1.7.0] xproto xext kbproto inputproto
randrproto)
# Obtain compiler/linker options for the xsetwacom tool
-PKG_CHECK_MODULES(X11, x11 xi xrandr)
+PKG_CHECK_MODULES(X11, x11 xi xrandr xinerama)
# Obtain compiler/linker options for libudev used by ISDV4 code
PKG_CHECK_MODULES(UDEV, libudev)
diff --git a/man/xsetwacom.man b/man/xsetwacom.man
index 3a5fa40..564e1d0 100644
--- a/man/xsetwacom.man
+++ b/man/xsetwacom.man
@@ -126,7 +126,8 @@ outputs may be obtained with the xrandr tool. The output
mapping
configuration is a onetime setting and does not track output
reconfigurations; the command needs to be re-run whenever the output
configuration changes. When used with tablet rotation, the tablet must be
-rotated before it is mapped to the new screen.
+rotated before it is mapped to the new screen. When running the NVIDIA
+binary driver, the output names are "HEAD-0" and "HEAD-1".
This parameter is write-only and cannot be queried.
.TP
\fBMode\fR Absolute|Relative
diff --git a/tools/xsetwacom.c b/tools/xsetwacom.c
index 1a313df..94c9db2 100644
--- a/tools/xsetwacom.c
+++ b/tools/xsetwacom.c
@@ -37,6 +37,7 @@
#include <X11/Xatom.h>
#include <X11/extensions/XInput.h>
#include <X11/extensions/Xrandr.h>
+#include <X11/extensions/Xinerama.h>
#include <X11/XKBlib.h>
#define TRACE(...) \
@@ -2058,8 +2059,64 @@ static void set_output_xrandr(Display *dpy, XDevice
*dev, param_t *param, int ar
XRRFreeScreenResources(res);
}
+/**
+ * Adjust the transformation matrix based on the twinview settings. This
+ * would better be done with libXNVCtrl but until they learn to package it
+ * properly, rely on Xinerama. Besides, libXNVCtrl isn't available on RHEL,
+ * so we'd have to do it through Xinerama there anyway.
+ */
+static void set_output_twinview(Display *dpy, XDevice *dev, param_t *param,
int argc, char **argv)
+{
+ char *output_name;
+ int event, error;
+ XineramaScreenInfo *screens;
+ int nscreens;
+ int head;
+
+ if (!XineramaQueryExtension(dpy, &event, &error))
+ {
+ fprintf(stderr, "Unable to set screen mapping. Xinerama
extension not found\n");
+ return;
+ }
+
+ output_name = argv[0];
+ if (strncmp(output_name, "HEAD-", 5) != 0)
+ {
+ fprintf(stderr, "Please specify the output name as HEAD-0 or
HEAD-1\n");
+ return;
+ }
+
+ head = output_name[5] - '0';
+ if (head != 0 && head != 1)
+ {
+ fprintf(stderr, "Please specify the output name as HEAD-0 or
HEAD-1\n");
+ return;
+ }
+
+ screens = XineramaQueryScreens(dpy, &nscreens);
+
+ if (nscreens == 0)
+ {
+ fprintf(stderr, "Xinerama failed to query screens.\n");
+ goto out;
+ } else if (nscreens != 2)
+ {
+ fprintf(stderr, "Found %d screens, but this command requires
exactly 2.\n", nscreens);
+ goto out;
+ }
+
+ _set_matrix(dpy, dev,
+ screens[head].x_org, screens[head].y_org,
+ screens[head].width, screens[head].height);
+
+out:
+ XFree(screens);
+}
+
static void set_output(Display *dpy, XDevice *dev, param_t *param, int argc,
char **argv)
{
+ int opcode, event, error;
+
if (argc != param->arg_count)
{
fprintf(stderr, "'%s' requires exactly %d value(s).\n",
param->name,
@@ -2067,7 +2124,12 @@ static void set_output(Display *dpy, XDevice *dev,
param_t *param, int argc, cha
return;
}
- set_output_xrandr(dpy, dev, param, argc, argv);
+ if (XQueryExtension(dpy, "NV-CONTROL", &opcode, &event, &error))
+ {
+ TRACE("Nvidia binary driver detected.\n");
+ set_output_twinview(dpy, dev, param, argc, argv);
+ } else
+ set_output_xrandr(dpy, dev, param, argc, argv);
}
--
1.7.5.4
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