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authorSimon Ser <contact@emersion.fr>2023-04-06 21:41:55 +0200
committerSimon Ser <contact@emersion.fr>2023-04-06 21:42:08 +0200
commit079ff9e6fbe6c755d3b1d5ac3ec0e9eb9ddc02a3 (patch)
tree495c4db36fba69e7f14003dd6283061ee740ee00
parent835208db98a29431fa687c9506f4b43fe645ff65 (diff)
output: add wlr_output_is_direct_scanout_allowed()
This lets compositors check whether direct scan-out is possible. Compositors will soon be responsible for manually calling this function.
-rw-r--r--include/wlr/types/wlr_output.h7
-rw-r--r--types/output/output.c20
2 files changed, 27 insertions, 0 deletions
diff --git a/include/wlr/types/wlr_output.h b/include/wlr/types/wlr_output.h
index bd379444..767418bd 100644
--- a/include/wlr/types/wlr_output.h
+++ b/include/wlr/types/wlr_output.h
@@ -525,6 +525,13 @@ void wlr_output_render_software_cursors(struct wlr_output *output,
*/
const struct wlr_drm_format_set *wlr_output_get_primary_formats(
struct wlr_output *output, uint32_t buffer_caps);
+/**
+ * Check whether direct scan-out is allowed on the output.
+ *
+ * Direct scan-out is typically disallowed when there are software cursors or
+ * during screen capture.
+ */
+bool wlr_output_is_direct_scanout_allowed(struct wlr_output *output);
struct wlr_output_cursor *wlr_output_cursor_create(struct wlr_output *output);
diff --git a/types/output/output.c b/types/output/output.c
index 59840e76..7de1ed66 100644
--- a/types/output/output.c
+++ b/types/output/output.c
@@ -1025,3 +1025,23 @@ const struct wlr_drm_format_set *wlr_output_get_primary_formats(
return formats;
}
+
+bool wlr_output_is_direct_scanout_allowed(struct wlr_output *output) {
+ if (output->attach_render_locks > 0) {
+ wlr_log(WLR_DEBUG, "Direct scan-out disabled by lock");
+ return false;
+ }
+
+ // If the output has at least one software cursor, reject direct scan-out
+ struct wlr_output_cursor *cursor;
+ wl_list_for_each(cursor, &output->cursors, link) {
+ if (cursor->enabled && cursor->visible &&
+ cursor != output->hardware_cursor) {
+ wlr_log(WLR_DEBUG,
+ "Direct scan-out disabled by software cursor");
+ return false;
+ }
+ }
+
+ return true;
+}