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backend/drm: populate cursor plane's current_fb

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The set_cursor() hook is a little bit special: it's not really
synchronized to commit() or test(). Once set_cursor() returns true,
the new cursor is part of the current state.

This fixes a state where wlr_drm_connector.cursor_enabled is true
but there is no FB available. This is triggered by set_cursor()
followed by a failed commit(), which resets pending_fb.

We should definitely fix the output interface to make the cursor part
of the pending state, but that's a more involved change.
This commit is contained in:
Simon Ser 2021-06-13 14:22:24 +02:00 • committed by Kenny Levinsen
parent 6259fd23fb
commit 6c3d080e25
1 changed files with 1 additions and 1 deletions
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2
backend/drm/drm.c
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@ -920,7 +920,7 @@ static bool drm_connector_set_cursor(struct wlr_output *output,
local_buf = wlr_buffer_lock(buffer); local_buf = wlr_buffer_lock(buffer);
} }
bool ok = drm_fb_import(&plane->pending_fb, drm, local_buf, bool ok = drm_fb_import(&plane->current_fb, drm, local_buf,
&plane->formats); &plane->formats);
wlr_buffer_unlock(local_buf); wlr_buffer_unlock(local_buf);
if (!ok) { if (!ok) {