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output: try skipping buffer allocation if the backend allows it 

When enabling an output, skip the empty buffer allocation if the
backend accepts modesets without a buffer.

This fixes mode-setting with the noop backend.
This commit is contained in:
Simon Ser 2021-08-02 16:49:02 +02:00 committed by Simon Zeni
parent 8a3cd28973
commit df0e75ba05
1 changed files with 6 additions and 0 deletions
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6
types/wlr_output.c
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@ -677,6 +677,12 @@ static bool output_ensure_buffer(struct wlr_output *output) {
return true; return true;
} }
// If the backend doesn't necessarily need a new buffer on modeset, don't
// bother allocating one.
if (!output->impl->test || output->impl->test(output)) {
return true;
}
wlr_log(WLR_DEBUG, "Attaching empty buffer to output for modeset"); wlr_log(WLR_DEBUG, "Attaching empty buffer to output for modeset");
if (!output_attach_empty_buffer(output)) { if (!output_attach_empty_buffer(output)) {