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Don't hardcode fps for fake screen

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Currently, when main hardware screen is powered-off,
X server initializes fake screen's timer with
1 second update interval.

Streaming software like Nomachine or Vnc, as well as
desktop input automation suffers from it, since it
will forever be stuck on 1 fps until the display is
turned back on.

This commit adds command line option -fakescreenfps <int>
that allows the user to change the default fake screen
timer.

Signed-off-by: Baranin Alexander <ismailsiege@gmail.com>
This commit is contained in:
Boris-Barboris
2021-06-22 00:51:08 +03:00
committed by Povilas Kanapickas
parent 8836b9d243
commit 16571b8926
4 changed files with 35 additions and 10 deletions
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2
present/present.h
View File

@@ -162,4 +162,6 @@ present_register_complete_notify(present_complete_notify_proc proc);
extern _X_EXPORT Bool
present_can_window_flip(WindowPtr window);
extern _X_EXPORT uint32_t FakeScreenFps;
#endif /* _PRESENT_H_ */

28
present/present_fake.c
View File

@@ -113,21 +113,29 @@ present_fake_queue_vblank(ScreenPtr screen,
return Success;
}
uint32_t FakeScreenFps = 0;
void
present_fake_screen_init(ScreenPtr screen)
{
uint32_t fake_fps;
present_screen_priv_ptr screen_priv = present_screen_priv(screen);
/* For screens with hardware vblank support, the fake code
* will be used for off-screen windows and while screens are blanked,
* in which case we want a slow interval here
*
* Otherwise, pretend that the screen runs at 60Hz
*/
if (screen_priv->info && screen_priv->info->get_crtc)
screen_priv->fake_interval = 1000000;
else
screen_priv->fake_interval = 16667;
if (FakeScreenFps)
fake_fps = FakeScreenFps;
else {
/* For screens with hardware vblank support, the fake code
* will be used for off-screen windows and while screens are blanked,
* in which case we want a large interval here: 1Hz
*
* Otherwise, pretend that the screen runs at 60Hz
*/
if (screen_priv->info && screen_priv->info->get_crtc)
fake_fps = 1;
else
fake_fps = 60;
}
screen_priv->fake_interval = 1000000 / fake_fps;
}
void