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output-damage: set needs swap only when we have new damage

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An output needs swap when there is new damage. If the damage is only
accumulated from the last frame, we could simply skip drawing.
This commit is contained in:
Ilia Bozhinov 2019-06-24 16:57:45 +02:00 committed by Simon Ser
parent d10072e76c
commit fb739b8293
1 changed files with 3 additions and 1 deletions
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4
types/wlr_output_damage.c
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@ -144,6 +144,8 @@ bool wlr_output_damage_attach_render(struct wlr_output_damage *output_damage,
return false; return false;
} }
*needs_frame =
output->needs_frame || pixman_region32_not_empty(&output_damage->current);
// Check if we can use damage tracking // Check if we can use damage tracking
if (buffer_age <= 0 || buffer_age - 1 > WLR_OUTPUT_DAMAGE_PREVIOUS_LEN) { if (buffer_age <= 0 || buffer_age - 1 > WLR_OUTPUT_DAMAGE_PREVIOUS_LEN) {
int width, height; int width, height;
@ -151,6 +153,7 @@ bool wlr_output_damage_attach_render(struct wlr_output_damage *output_damage,
// Buffer new or too old, damage the whole output // Buffer new or too old, damage the whole output
pixman_region32_union_rect(damage, damage, 0, 0, width, height); pixman_region32_union_rect(damage, damage, 0, 0, width, height);
*needs_frame = true;
} else { } else {
pixman_region32_copy(damage, &output_damage->current); pixman_region32_copy(damage, &output_damage->current);
@ -170,7 +173,6 @@ bool wlr_output_damage_attach_render(struct wlr_output_damage *output_damage,
} }
} }
*needs_frame = output->needs_frame || pixman_region32_not_empty(damage);
return true; return true;
} }