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output: fix off-by-one wlr_output_event_present.commit_seq

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Backends not supporting presentation feedback call
wlr_output_send_present with a NULL event in their commit handler. Since
the commit hasn't been applied yet, commit_seq still has its old value.
We need to increment it.

An alternative would be to move commit_seq in wlr_output_state. This
would allow to have a pending and a current commit_seq.
wlr_output_send_present could take the pending commit_seq when called
with a NULL event.
This commit is contained in:
Simon Ser 2019-11-17 00:56:27 +01:00 • committed by Drew DeVault
parent 2d9661f189
commit 3084cee7bc
1 changed files with 1 additions and 1 deletions
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2
types/wlr_output.c
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@ -570,7 +570,7 @@ void wlr_output_send_present(struct wlr_output *output,
struct wlr_output_event_present _event = {0}; struct wlr_output_event_present _event = {0};
if (event == NULL) { if (event == NULL) {
event = &_event; event = &_event;
event->commit_seq = output->commit_seq; event->commit_seq = output->commit_seq + 1;
} }
event->output = output; event->output = output;