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config/output: Only apply changes if needed

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Instead of just setting things in the wlr_output_state and committing
whatever the result is, try to only make changes if the new config
differs from the current state and bail out if no changes were made.
This commit is contained in:
Kenny Levinsen 2023-11-16 14:18:12 +01:00
parent 4e28bce6d0
commit ee2d4a22e0
1 changed files with 51 additions and 27 deletions
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32
sway/config/output.c
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@ -253,11 +253,17 @@ static void set_mode(struct wlr_output *output, struct wlr_output_state *pending
mhz = mhz <= 0 ? INT_MAX : mhz;
if (wl_list_empty(&output->modes) || custom) {
// Check if the current mode is similar to the custom mode specified.
// This is a bit ugly as we do not have a mode object to compare.
if (!output->current_mode || output->current_mode->preferred ||
output->width != width || output->height != height ||
(refresh_rate > 0 && output->refresh != mhz)) {
sway_log(SWAY_DEBUG, "Assigning custom mode to %s", output->name);
wlr_output_state_set_custom_mode(pending, width, height,
refresh_rate > 0 ? mhz : 0);
return;
}
}
struct wlr_output_mode *mode, *best = NULL;
int best_diff_mhz = INT_MAX;
@ -287,7 +293,9 @@ static void set_mode(struct wlr_output *output, struct wlr_output_state *pending
width, height, refresh_rate,
best->width, best->height, best->refresh / 1000.f);
}
if (best != output->current_mode) {
wlr_output_state_set_mode(pending, best);
}
}
static void set_modeline(struct wlr_output *output,
@ -299,7 +307,7 @@ static void set_modeline(struct wlr_output *output,
}
sway_log(SWAY_DEBUG, "Assigning custom modeline to %s", output->name);
struct wlr_output_mode *mode = wlr_drm_connector_add_mode(output, drm_mode);
if (mode) {
if (mode && mode != output->current_mode) {
wlr_output_state_set_mode(pending, mode);
}
#else
@ -396,7 +404,9 @@ static void queue_output_config(struct output_config *oc,
struct wlr_output *wlr_output = output->wlr_output;
if (oc && (!oc->enabled || oc->power == 0)) {
bool needs_enabled = oc == NULL || (oc->enabled || oc->power == 1);
if (needs_enabled != wlr_output->enabled) {
if (!needs_enabled) {
sway_log(SWAY_DEBUG, "Turning off output %s", wlr_output->name);
wlr_output_state_set_enabled(pending, false);
return;
@ -404,6 +414,7 @@ static void queue_output_config(struct output_config *oc,
sway_log(SWAY_DEBUG, "Turning on output %s", wlr_output->name);
wlr_output_state_set_enabled(pending, true);
}
if (oc && oc->drm_mode.type != 0 && oc->drm_mode.type != (uint32_t) -1) {
sway_log(SWAY_DEBUG, "Set %s modeline",
@ -418,6 +429,7 @@ static void queue_output_config(struct output_config *oc,
sway_log(SWAY_DEBUG, "Set preferred mode");
struct wlr_output_mode *preferred_mode =
wlr_output_preferred_mode(wlr_output);
if (preferred_mode != wlr_output->current_mode) {
wlr_output_state_set_mode(pending, preferred_mode);
if (!wlr_output_test_state(wlr_output, pending)) {
@ -436,8 +448,10 @@ static void queue_output_config(struct output_config *oc,
}
}
}
}
if (oc && (oc->subpixel != WL_OUTPUT_SUBPIXEL_UNKNOWN || config->reloading)) {
if (oc && (oc->subpixel != WL_OUTPUT_SUBPIXEL_UNKNOWN &&
oc->subpixel != wlr_output->subpixel)) {
sway_log(SWAY_DEBUG, "Set %s subpixel to %s", oc->name,
sway_wl_output_subpixel_to_string(oc->subpixel));
wlr_output_state_set_subpixel(pending, oc->subpixel);
@ -481,7 +495,8 @@ static void queue_output_config(struct output_config *oc,
wlr_output_state_set_scale(pending, scale);
}
if (oc && oc->adaptive_sync != -1) {
bool adaptive_sync_enabled = wlr_output->adaptive_sync_status == WLR_OUTPUT_ADAPTIVE_SYNC_ENABLED;
if (oc && oc->adaptive_sync != -1 && oc->adaptive_sync != adaptive_sync_enabled) {
sway_log(SWAY_DEBUG, "Set %s adaptive sync to %d", wlr_output->name,
oc->adaptive_sync);
wlr_output_state_set_adaptive_sync_enabled(pending, oc->adaptive_sync == 1);
@ -498,6 +513,10 @@ static void queue_output_config(struct output_config *oc,
for (size_t i = 0; fmts[i] != DRM_FORMAT_INVALID; i++) {
wlr_output_state_set_render_format(pending, fmts[i]);
if (wlr_output_test_state(wlr_output, pending)) {
if (pending->render_format == wlr_output->render_format) {
// No change, undo the committed flag
pending->committed &= ~WLR_OUTPUT_STATE_RENDER_FORMAT;
}
break;
}
@ -521,6 +540,11 @@ bool apply_output_config(struct output_config *oc, struct sway_output *output) {
struct wlr_output_state pending = {0};
queue_output_config(oc, output, &pending);
if (pending.committed == 0) {
// No change
return true;
}
sway_log(SWAY_DEBUG, "Committing output %s", wlr_output->name);
if (!wlr_output_commit_state(wlr_output, &pending)) {
// Failed to commit output changes, maybe the output is missing a CRTC.