Add demo caption.

main.c

@@ -737,8 +737,17 @@ main(int argc, char *argv[])
                                   cur_texid_mask, cur_face_mesh_mask, &cur_face_detect_mask->faces[0],
                                   s_gui_prop.draw_mesh_line);
         }
+	float col_red[]   = {92.0f / 255.0f, 41.0f / 255.0f, 131.0f / 255.0f, 1.0f};
+    	float col_white[] = {0.0f, 0.0f, 0.0f, 0.0f};
 
-        /* --------------------------------------- *
+        char buf[512];
+	sprintf (buf, "Collabora AI Compression - Running on OKdo ROCK 4 SE");
+    	draw_dbgstr_ex (buf, 80, 0, 1.2f, col_white, col_red);
+
+	sprintf (buf, "Apertis with Mainline Linux version 6.0.3");
+    	draw_dbgstr_ex (buf, 80, 30, 1.2f, col_white, col_red);
+        
+	/* --------------------------------------- *
          *  post process
          * --------------------------------------- */
         glViewport (0, 0, win_w, win_h);