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scene: use output with highest refresh rate for frame pacing

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If a surface is mirrored on two outputs, we don't want to pick the
first output if the second has a higher refresh rate.

Also fixes duplicate frame/feedback events when a surface is added
to multiple scenes.
This commit is contained in:
Simon Ser 2025-06-05 12:29:55 +02:00 • committed by Kenny Levinsen
parent 51d051497d
commit 6204fc3278
2 changed files with 24 additions and 7 deletions
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7
include/wlr/types/wlr_scene.h
View file

@ -123,6 +123,10 @@ struct wlr_scene_surface {
struct {
struct wlr_box clip;
// Output used for frame pacing (surface frame callbacks, presentation
// time feedback, etc), may be NULL
struct wlr_output *frame_pacing_output;
struct wlr_addon addon;
struct wl_listener outputs_update;
@ -178,8 +182,7 @@ struct wlr_scene_buffer {
/**
* The output that the largest area of this buffer is displayed on.
* This may be NULL if the buffer is not currently displayed on any
* outputs. This is the output that should be used for frame callbacks,
* presentation feedback, etc.
* outputs.
*/
struct wlr_scene_output *primary_output;

24
types/scene/surface.c
View file

@ -22,11 +22,25 @@ static double get_surface_preferred_buffer_scale(struct wlr_surface *surface) {
return scale;
}
static struct wlr_output *get_surface_frame_pacing_output(struct wlr_surface *surface) {
struct wlr_output *frame_pacing_output = NULL;
struct wlr_surface_output *surface_output;
wl_list_for_each(surface_output, &surface->current_outputs, link) {
if (frame_pacing_output == NULL ||
surface_output->output->refresh > frame_pacing_output->refresh) {
frame_pacing_output = surface_output->output;
}
}
return frame_pacing_output;
}
static void handle_scene_buffer_outputs_update(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, outputs_update);
surface->frame_pacing_output = get_surface_frame_pacing_output(surface->surface);
double scale = get_surface_preferred_buffer_scale(surface->surface);
wlr_fractional_scale_v1_notify_scale(surface->surface, scale);
wlr_surface_set_preferred_buffer_scale(surface->surface, ceil(scale));
@ -60,15 +74,15 @@ static void handle_scene_buffer_output_sample(
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, output_sample);
const struct wlr_scene_output_sample_event *event = data;
struct wlr_scene_output *scene_output = event->output;
if (surface->buffer->primary_output != scene_output) {
struct wlr_output *output = event->output->output;
if (surface->frame_pacing_output != output) {
return;
}
if (event->direct_scanout) {
wlr_presentation_surface_scanned_out_on_output(surface->surface, scene_output->output);
wlr_presentation_surface_scanned_out_on_output(surface->surface, output);
} else {
wlr_presentation_surface_textured_on_output(surface->surface, scene_output->output);
wlr_presentation_surface_textured_on_output(surface->surface, output);
}
}
@ -77,7 +91,7 @@ static void handle_scene_buffer_frame_done(
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, frame_done);
struct wlr_scene_frame_done_event *event = data;
if (surface->buffer->primary_output != event->output) {
if (surface->frame_pacing_output != event->output->output) {
return;
}