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fix(refr): fix true double double buffering logic with transparent screens

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fixes #3623
This commit is contained in:
Gabor Kiss-Vamosi
2022-08-31 21:15:44 +02:00
parent ece3495004
commit 8b605cc482
1 changed files with 10 additions and 28 deletions
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38
src/core/lv_refr.c
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@@ -323,15 +323,8 @@ void _lv_disp_refr_timer(lv_timer_t * tmr)
refr_invalid_areas();
/*If refresh happened ...*/
if(disp_refr->inv_p != 0) {
if(disp_refr->driver->full_refresh) {
lv_area_t disp_area;
lv_area_set(&disp_area, 0, 0, lv_disp_get_hor_res(disp_refr) - 1, lv_disp_get_ver_res(disp_refr) - 1);
disp_refr->driver->draw_ctx->buf_area = &disp_area;
draw_buf_flush(disp_refr);
}
/*Clean up*/
lv_memset_00(disp_refr->inv_areas, sizeof(disp_refr->inv_areas));
@@ -621,8 +614,11 @@ static void refr_area_part(lv_draw_ctx_t * draw_ctx)
lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp_refr);
/* Below the `area_p` area will be redrawn into the draw buffer.
* In single buffered mode wait here until the buffer is freed.*/
if(draw_buf->buf1 && !draw_buf->buf2) {
* In single buffered mode wait here until the buffer is freed.
* In full double buffered mode wait here while the buffers are swapped and a buffer becomes available*/
bool full_sized = draw_buf->size == disp_refr->driver->hor_res * disp_refr->driver->ver_res;
if((draw_buf->buf1 && !draw_buf->buf2) ||
(draw_buf->buf1 && draw_buf->buf2 && full_sized)) {
while(draw_buf->flushing) {
if(disp_refr->driver->wait_cb) disp_refr->driver->wait_cb(disp_refr->driver);
}
@@ -710,11 +706,7 @@ static void refr_area_part(lv_draw_ctx_t * draw_ctx)
refr_obj_and_children(draw_ctx, lv_disp_get_layer_top(disp_refr));
refr_obj_and_children(draw_ctx, lv_disp_get_layer_sys(disp_refr));
/*In true double buffered mode flush only once when all areas were rendered.
*In normal mode flush after every area*/
if(disp_refr->driver->full_refresh == false) {
draw_buf_flush(disp_refr);
}
draw_buf_flush(disp_refr);
}
/**
@@ -1189,24 +1181,13 @@ static void draw_buf_flush(lv_disp_t * disp)
lv_draw_ctx_t * draw_ctx = disp->driver->draw_ctx;
if(draw_ctx->wait_for_finish) draw_ctx->wait_for_finish(draw_ctx);
/* In double buffered mode wait until the other buffer is freed
/* In partial double buffered mode wait until the other buffer is freed
* and driver is ready to receive the new buffer */
if(draw_buf->buf1 && draw_buf->buf2) {
bool full_sized = draw_buf->size == disp_refr->driver->hor_res * disp_refr->driver->ver_res;
if(draw_buf->buf1 && draw_buf->buf2 && !full_sized) {
while(draw_buf->flushing) {
if(disp_refr->driver->wait_cb) disp_refr->driver->wait_cb(disp_refr->driver);
}
/*If the screen is transparent initialize it when the flushing is ready*/
#if LV_COLOR_SCREEN_TRANSP
if(disp_refr->driver->screen_transp) {
if(disp_refr->driver->clear_cb) {
disp_refr->driver->clear_cb(disp_refr->driver, disp_refr->driver->draw_buf->buf_act, disp_refr->driver->draw_buf->size);
}
else {
lv_memset_00(disp_refr->driver->draw_buf->buf_act, disp_refr->driver->draw_buf->size * LV_IMG_PX_SIZE_ALPHA_BYTE);
}
}
#endif
}
draw_buf->flushing = 1;
@@ -1225,6 +1206,7 @@ static void draw_buf_flush(lv_disp_t * disp)
call_flush_cb(disp->driver, draw_ctx->buf_area, draw_ctx->buf);
}
}
/*If there are 2 buffers swap them. With direct mode swap only on the last area*/
if(draw_buf->buf1 && draw_buf->buf2 && (!disp->driver->direct_mode || flushing_last)) {
if(draw_buf->buf_act == draw_buf->buf1)