semfault/dwl
1
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

fix screen artifacts when setting gamma

Browse source 
the artifacts were caused because we tried to set the gamma right after
receiving the event, this resulted in two pending page-flips, which
not always play well together.

This also seems to fix a screen freeze when turning on a monitor that has
gamma.

Additionally the current method won't work once [0] is merged

[0]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4423
This commit is contained in:
Leonardo Hernández Hernández 2023-11-16 20:58:45 -06:00
parent e1f3983bf8
commit 6f8a3f9374
No known key found for this signature in database
GPG key ID: E538897EE11B9624
1 changed files with 32 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

47
dwl.c
View file

@ -194,6 +194,7 @@ struct Monitor {
unsigned int sellt;
uint32_t tagset[2];
double mfact;
int gamma_lut_changed;
int nmaster;
char ltsymbol[16];
};
@ -1870,6 +1871,8 @@ rendermon(struct wl_listener *listener, void *data)
* generally at the output's refresh rate (e.g. 60Hz). */
Monitor *m = wl_container_of(listener, m, frame);
Client *c;
struct wlr_output_state pending = {0};
struct wlr_gamma_control_v1 *gamma_control;
struct timespec now;
/* Render if no XDG clients have an outstanding resize and are visible on
@ -1877,12 +1880,38 @@ rendermon(struct wl_listener *listener, void *data)
wl_list_for_each(c, &clients, link)
if (c->resize && !c->isfloating && client_is_rendered_on_mon(c, m) && !client_is_stopped(c))
goto skip;
/*
* HACK: The "correct" way to set the gamma is to commit it together with
* the rest of the state in one go, but to do that we would need to rewrite
* wlr_scene_output_commit() in order to add the gamma to the pending
* state before committing, instead try to commit the gamma in one frame,
* and commit the rest of the state in the next one (or in the same frame if
* the gamma can not be committed).
*/
if (m->gamma_lut_changed) {
gamma_control = wlr_gamma_control_manager_v1_get_control(gamma_control_mgr, m->wlr_output);
m->gamma_lut_changed = 0;
if (!wlr_gamma_control_v1_apply(gamma_control, &pending))
goto commit;
if (!wlr_output_test_state(m->wlr_output, &pending)) {
wlr_gamma_control_v1_send_failed_and_destroy(gamma_control);
goto commit;
}
wlr_output_commit_state(m->wlr_output, &pending);
wlr_output_schedule_frame(m->wlr_output);
} else {
commit:
wlr_scene_output_commit(m->scene_output, NULL);
}
skip:
/* Let clients know a frame has been rendered */
clock_gettime(CLOCK_MONOTONIC, &now);
wlr_scene_output_send_frame_done(m->scene_output, &now);
wlr_output_state_finish(&pending);
}
void
@ -2057,21 +2086,9 @@ void
setgamma(struct wl_listener *listener, void *data)
{
struct wlr_gamma_control_manager_v1_set_gamma_event *event = data;
struct wlr_output_state state;
wlr_output_state_init(&state);
if (!wlr_gamma_control_v1_apply(event->control, &state)) {
wlr_output_state_finish(&state);
return;
}
if (!wlr_output_test_state(event->output, &state)) {
wlr_gamma_control_v1_send_failed_and_destroy(event->control);
wlr_output_state_finish(&state);
return;
}
wlr_output_commit_state(event->output, &state);
wlr_output_schedule_frame(event->output);
Monitor *m = event->output->data;
m->gamma_lut_changed = 1;
wlr_output_schedule_frame(m->wlr_output);
}
void