From: Junkyeong Kim <jk0430.kim@samsung.com>
Date: Tue, 8 Jan 2019 04:30:01 +0000 (+0900)
Subject: virtual: treat unset buffer commit
X-Git-Tag: accepted/tizen/unified/20190115.060027~2
X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Flibtdm.git;a=commitdiff_plain;h=48923ff22e1e920d712b032650f5de932e18a477

virtual: treat unset buffer commit

Change-Id: I41ad012b0fbbdc5ea22b6e1b50be38f8aa99c060
Signed-off-by: Junkyeong Kim <jk0430.kim@samsung.com>
---

diff --git a/backends/virtual/tdm_virtual_display.c b/backends/virtual/tdm_virtual_display.c
index 2d407fe..e9e503f 100644
--- a/backends/virtual/tdm_virtual_display.c
+++ b/backends/virtual/tdm_virtual_display.c
@@ -459,6 +459,25 @@ virtual_output_commit(tdm_output *output, int sync, void *user_data)
 
 	layer_data = output_data->primary_layer;
 
+	if (layer_data->display_buffer == NULL && layer_data->display_buffer_changed == 1) {
+		event_data = calloc(1, sizeof(tdm_virtual_event_data));
+		if (!event_data) {
+			TDM_ERR("alloc failed");
+			return TDM_ERROR_OUT_OF_MEMORY;
+		}
+
+		event_data->type = TDM_VIRTUAL_EVENT_TYPE_COMMIT;
+		event_data->output_data = output_data;
+		event_data->user_data = user_data;
+
+		ret = _tdm_virtual_display_wait_vblank(output_data, 3, event_data);
+		if (ret != TDM_ERROR_NONE) {
+			free(event_data);
+			return ret;
+		}
+		goto done;
+	}
+
 	if (voutput_data->vcommit_func) {
 		if (layer_data->display_buffer_changed) {
 			output_data->commit_user_data = user_data;
@@ -496,6 +515,7 @@ virtual_output_commit(tdm_output *output, int sync, void *user_data)
 		}
 	}
 
+done:
 	layer_data->display_buffer_changed = 0;
 
 	return TDM_ERROR_NONE;