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output: Log output information when connected

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The only logging we currently provide about outputs is debug logging
from wlroots about available modes, tested output states and errors
applying it.

Be more informative by logging some output details at INFO level when
they pop up, including optional features like HDR and adaptive sync.
This makes such output details more obvious from a quick glance, both
for users and in case logs are shared for support.
This commit is contained in:
Kenny Levinsen 2025-06-27 11:22:02 +02:00
parent b7965e9a46
commit 273c1224cf
1 changed files with 34 additions and 2 deletions
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36
sway/desktop/output.c
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@ -523,6 +523,39 @@ static void handle_request_state(struct wl_listener *listener, void *data) {
force_modeset();
}
static void dump_output(struct wlr_output *output) {
bool supports_bt2020 = output->supported_primaries &
WLR_COLOR_NAMED_PRIMARIES_BT2020;
bool supports_pq = output->supported_transfer_functions &
WLR_COLOR_TRANSFER_FUNCTION_ST2084_PQ;
bool supports_color_transform =
server.renderer->features.output_color_transform;
const char *hdr_support = "yes";
if (!supports_bt2020 && !supports_pq) {
hdr_support = "no";
} else if (supports_bt2020 && supports_pq && !supports_color_transform) {
hdr_support = "no (missing renderer color transform support)";
} else if (!supports_bt2020) {
hdr_support = "no (missing BT2020 primaries)";
} else if (!supports_pq) {
hdr_support = "no (missing PQ transfer function)";
}
char id[128];
output_get_identifier(id, sizeof(id), output);
sway_log(SWAY_INFO, "New output: %s", output->name);
sway_log(SWAY_INFO, " Identifier: %s", id);
sway_log(SWAY_INFO, " Dimensions: %dmm x %dmm",
output->phys_width, output->phys_height);
sway_log(SWAY_INFO, " Non-desktop: %s",
output->non_desktop ? "yes" : "no");
sway_log(SWAY_INFO, " Adaptive sync support: %s",
output->adaptive_sync_supported ? "yes" : "no");
sway_log(SWAY_INFO, " HDR support: %s", hdr_support);
}
static unsigned int last_headless_num = 0;
void handle_new_output(struct wl_listener *listener, void *data) {
@ -539,8 +572,7 @@ void handle_new_output(struct wl_listener *listener, void *data) {
wlr_output_set_name(wlr_output, name);
}
sway_log(SWAY_DEBUG, "New output %p: %s (non-desktop: %d)",
wlr_output, wlr_output->name, wlr_output->non_desktop);
dump_output(wlr_output);
if (wlr_output->non_desktop) {
sway_log(SWAY_DEBUG, "Not configuring non-desktop output");