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output-damage: support direct scan-out

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In case direct scan-out is used, we still need to accumulate damage for the
render-buffers.
This commit is contained in:
Simon Ser 2019-05-25 20:13:36 +03:00 committed by Drew DeVault
parent 6c659da98b
commit e07ffaa249
1 changed files with 18 additions and 5 deletions
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23
types/wlr_output_damage.c
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@ -59,12 +59,25 @@ static void output_handle_commit(struct wl_listener *listener, void *data) {
return;
}
// same as decrementing, but works on unsigned integers
output_damage->previous_idx += WLR_OUTPUT_DAMAGE_PREVIOUS_LEN - 1;
output_damage->previous_idx %= WLR_OUTPUT_DAMAGE_PREVIOUS_LEN;
pixman_region32_t *prev;
switch (output_damage->output->pending.buffer_type) {
case WLR_OUTPUT_STATE_BUFFER_RENDER:
// render-buffers have been swapped, rotate the damage
// same as decrementing, but works on unsigned integers
output_damage->previous_idx += WLR_OUTPUT_DAMAGE_PREVIOUS_LEN - 1;
output_damage->previous_idx %= WLR_OUTPUT_DAMAGE_PREVIOUS_LEN;
prev = &output_damage->previous[output_damage->previous_idx];
pixman_region32_copy(prev, &output_damage->current);
break;
case WLR_OUTPUT_STATE_BUFFER_SCANOUT:
// accumulate render-buffer damage
prev = &output_damage->previous[output_damage->previous_idx];
pixman_region32_union(prev, prev, &output_damage->current);
break;
}
pixman_region32_copy(&output_damage->previous[output_damage->previous_idx],
&output_damage->current);
pixman_region32_clear(&output_damage->current);
}