LV_VDB_DOUBLE: tested on STM32F429 Discovery

lv_appx/lv_app_benchmark.c

@@ -146,6 +146,14 @@ const lv_app_dsc_t * lv_app_benchmark_init(void)
 static void my_app_run(lv_app_inst_t * app, void * conf)
 {
     /*Initialize the application*/
+	my_app_data_t * ad = app->app_data;
+	ad->opa = 0;
+	ad->recolor = 0;
+	ad->shdw = 0;
+	ad->upscalse = 0;
+	ad->wp = 0;
+
+
 }
 
 /**

lv_conf_templ.h

@@ -28,7 +28,7 @@
 #if LV_VDB_SIZE
 /* Double virtual buffering
  * One for rendering another to transfer former rendered image to frame buffer in the background*/
-#define LV_VDB_DOUBLE       1
+#define LV_VDB_DOUBLE       0
 #endif
 
 #define LV_REFR_PERIOD      40    /*Screen refresh period in milliseconds*/

lv_draw/lv_draw_vbasic.c

@@ -123,7 +123,6 @@ void lv_vfill(const area_t * cords_p, const area_t * mask_p,
     cord_t map_width = area_get_width(&vdb_rel_a);
 	if(color_map[0].full != color.full || last_width != map_width) {
 		uint16_t i;
-
 		for(i = 0; i < map_width; i++) {
 			color_map[i].full = color.full;
 		}
@@ -133,7 +132,6 @@ void lv_vfill(const area_t * cords_p, const area_t * mask_p,
     cord_t row;
     for(row = vdb_rel_a.y1;row <= vdb_rel_a.y2; row++) {
     	disp_color_cpy(&vdb_buf_tmp[vdb_rel_a.x1], color_map, map_width, opa);
-
     	vdb_buf_tmp += vdb_width;
     }
 #endif