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perf(draw): skip area independence tests with one draw unit (#6825)

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Gabor Kiss-Vamosi
2024-09-17 16:36:13 +02:00
parent ed5d38b048
commit f7c42c29de
1 changed files with 35 additions and 0 deletions
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35
src/draw/lv_draw.c
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@@ -311,6 +311,41 @@ uint32_t lv_draw_get_unit_count(void)
lv_draw_task_t * lv_draw_get_next_available_task(lv_layer_t * layer, lv_draw_task_t * t_prev, uint8_t draw_unit_id)
{
LV_PROFILER_BEGIN;
/* If there is only 1 draw unit the task can be consumed linearly as
* they are added in the correct order. However, it can happen that
* there is a `LV_DRAW_TASK_TYPE_LAYER` which can be blended only when
* all its tasks are ready. As other areas might be on top of that
* layer-to-blend don't skip it. Instead stop there, so that the
* draw tasks of that layer can be consumed and can be finished.
* After that this layer-to-blenf will have `LV_DRAW_TASK_STATE_QUEUED`
* so it can be blended normally.*/
if(_draw_info.unit_cnt <= 1) {
lv_draw_task_t * t = layer->draw_task_head;
while(t) {
/*Mark unsupported draw tasks as ready as no one else will consume them*/
if(t->state == LV_DRAW_TASK_STATE_QUEUED &&
t->preferred_draw_unit_id != LV_DRAW_UNIT_NONE &&
t->preferred_draw_unit_id != draw_unit_id) {
t->state = LV_DRAW_TASK_STATE_READY;
}
/*Not queued yet, leave this layer while the first task will be queued*/
else if(t->state != LV_DRAW_TASK_STATE_QUEUED) {
t = NULL;
break;
}
/*It's a supported and queued task, process it*/
else {
break;
}
t = t->next;
}
LV_PROFILER_END;
return t;
}
/*Handle the case of multiply draw units*/
/*If the first task is screen sized, there cannot be independent areas*/
if(layer->draw_task_head) {
int32_t hor_res = lv_display_get_horizontal_resolution(lv_refr_get_disp_refreshing());