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Nikola Pavlica c4c00922cc display/gtk: get proper refreshrate 
Because some VMs in QEMU can get GPU virtualization (using technologies
such as iGVT-g, as mentioned previously), they could produce a video
output that had a higher display refresh rate than of what the GTK
display was displaying. (fxp. Playing a video game inside of a Windows
VM at 60 Hz, while the output stood locked at 33 Hz because of defaults
set in include/ui/console.h)

Since QEMU does indeed have internal systems for determining frame
times as defined in ui/console.c.
The code checks for a variable called update_interval that it later
uses for time calculation. This variable, however, isn't defined
anywhere in ui/gtk.c and instead ui/console.c just sets it to
GUI_REFRESH_INTERVAL_DEFAULT which is 30

update_interval represents the number of milliseconds per display
refresh, and by doing some math we get that 1000/30 = 33.33... Hz

This creates the mentioned problem and what this patch does is that it
checks for the display refresh rate reported by GTK itself (we can take
this as a safe value) and just converts it back to a number of
milliseconds per display refresh.

Signed-off-by: Nikola Pavlica <pavlica.nikola@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200108121342.29597-1-pavlica.nikola@gmail.com

[ kraxel: style tweak: add blank line between vars and code ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
 		2020-01-14 07:26:36 +01:00
..
icons ui: install logo icons to $prefix/share/icons 2019-01-21 09:43:13 +01:00
keycodemapdb@6b3d716e2b ui: update keycodemapdb to get py3 fixes 2018-02-05 19:53:55 -02:00
shader opengl: add flipping vertex shader 2017-10-17 10:25:42 +02:00
Makefile.objs ui: add an embedded Barrier client 2019-09-17 13:43:22 +02:00
cocoa.m ui: Fix hanging up Cocoa display on macOS 10.15 (Catalina) 2019-10-18 10:35:31 +02:00
console-gl.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
console.c ui: Print available display backends with '-display help' 2020-01-14 07:26:36 +01:00
curses.c curses: correctly pass the color pair to setcchar() 2019-10-18 10:39:12 +02:00
curses_keys.h curses: support wide input 2019-03-11 08:39:02 +01:00
cursor.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
cursor_hidden.xpm ui: move files to ui/ and include/ui/ 2012-12-19 08:31:30 +01:00
cursor_left_ptr.xpm ui: move files to ui/ and include/ui/ 2012-12-19 08:31:30 +01:00
egl-context.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
egl-headless.c ui/egl: fix framebuffer reads 2019-09-17 13:42:02 +02:00
egl-helpers.c ui/egl: fix framebuffer reads 2019-09-17 13:42:02 +02:00
gtk-egl.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
gtk-gl-area.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
gtk.c display/gtk: get proper refreshrate 2020-01-14 07:26:36 +01:00
input-barrier.c ui: fix keymap file search in input-barrier object 2019-10-18 10:40:46 +02:00
input-barrier.h ui: add an embedded Barrier client 2019-09-17 13:43:22 +02:00
input-keymap.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
input-legacy.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
input-linux.c input-linux: add shift+shift as a grab toggle 2019-08-21 12:25:46 +02:00
input.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
kbd-state.c Include qemu/queue.h slightly less 2019-08-16 13:31:52 +02:00
keymaps.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
keymaps.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qemu-pixman.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qemu-x509.h ui: move files to ui/ and include/ui/ 2012-12-19 08:31:30 +01:00
qemu.desktop ui: fix icon display for GTK frontend under GNOME Shell with Wayland 2019-01-21 09:43:13 +01:00
sdl2-2d.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
sdl2-gl.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
sdl2-input.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
sdl2.c glib: use portable g_setenv() 2019-12-17 09:05:23 +01:00
shader.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
spice-app.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
spice-core.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
spice-display.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
spice-input.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
trace-events ppm-save: pass opened fd 2020-01-02 13:54:57 +04:00
vgafont.h ui: move files to ui/ and include/ui/ 2012-12-19 08:31:30 +01:00
vnc-auth-sasl.c authz: delete existing ACL implementation 2019-02-26 15:32:19 +00:00
vnc-auth-sasl.h Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
vnc-auth-vencrypt.c authz: delete existing ACL implementation 2019-02-26 15:32:19 +00:00
vnc-auth-vencrypt.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
vnc-enc-hextile-template.h ui: vnc: finish removing TABs 2019-02-05 16:50:18 +01:00
vnc-enc-hextile.c ui: Clean up includes 2016-02-04 17:01:04 +00:00
vnc-enc-tight.c vnc: fix memory leak when vnc disconnect 2019-09-17 13:45:10 +02:00
vnc-enc-tight.h Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
vnc-enc-zlib.c vnc: fix memory leak when vnc disconnect 2019-09-17 13:45:10 +02:00
vnc-enc-zrle.c vnc: fix memory leak when vnc disconnect 2019-09-17 13:45:10 +02:00
vnc-enc-zrle.h Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
vnc-enc-zrle.inc.c vnc: fix memory leak when vnc disconnect 2019-09-17 13:45:10 +02:00
vnc-enc-zywrle-template.c avoid TABs in files that only contain a few 2019-01-11 15:46:56 +01:00
vnc-enc-zywrle.h ui: vnc: finish removing TABs 2019-02-05 16:50:18 +01:00
vnc-jobs.c vnc: fix memleak of the "vnc-worker-output" name 2018-08-24 08:40:10 +02:00
vnc-jobs.h ui/vnc: Drop unused vnc_has_job() and vnc_jobs_clear() 2017-02-08 14:59:36 +01:00
vnc-palette.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
vnc-palette.h Include qapi/qmp/qlist.h exactly where needed 2018-02-09 13:52:15 +01:00
vnc-stubs.c vnc: add qapi/error.h include to stubs 2018-02-16 12:23:21 +01:00
vnc-ws.c authz: delete existing ACL implementation 2019-02-26 15:32:19 +00:00
vnc-ws.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
vnc.c vnc: drop Error pointer indirection in vnc_client_io_error 2019-12-18 08:36:16 +01:00
vnc.h vnc: drop Error pointer indirection in vnc_client_io_error 2019-12-18 08:36:16 +01:00
vnc_keysym.h ui: add next and prior keysyms 2017-07-27 14:23:09 +02:00
x_keymap.c ui: fix keymap detection under Xwayland 2018-04-10 11:21:54 +02:00
x_keymap.h ui: convert GTK and SDL1 frontends to keycodemapdb 2018-01-25 15:02:00 +01:00