public void LateUpdate()
{
TileCache.MarkAllUnused();
_lateUpdate();
RequestManager.ForEachQueuedDownload(DerateUnusedTilePriority);
RequestManager.ForEachActiveDownload(DerateUnusedTilePriority);
TileCache.ForEach(DerateUnusedTilePriority);
int maxNewRequests = TileCache.HasMaxSize ? TileCache.MaxSize - TileCache.Count() : -1;
RequestManager.Process(maxNewRequests);
int processed = 0;
while (processed < SceneOptions.MaximumTilesToProcessPerFrame && ProcessingQueue.Count != 0)
{
var tile = ProcessingQueue.Dequeue();
if (tile.Process()) //bake colliders, load indices, etc...
{
// We allow requests to terminate early if the (would be) tile goes out of view, so check if a tile
// is actually processed
processed++;
}
}
//if there are queued requests with higher priority than existing tiles but the TileCache cache is too full
//to allow them to load, unload a corresponding number of lowest-priority tiles
int ejected = 0;
if (maxNewRequests >= 0 && maxNewRequests < SceneOptions.MaxConcurrentRequests &&
RequestManager.Count() > maxNewRequests)
{
var re = RequestManager.GetEnumerator(); //high priority (low value) first
ejected = TileCache.MarkLowPriorityUnused(t => //low priority (high value) first
re.MoveNext() &&
t.FrameState.Priority > re.Current.FrameState.Priority,
SceneOptions.MaxConcurrentRequests - maxNewRequests);
}
if (ejected > 0 || (TileCache.TargetSize > 0 && TileCache.Count() > TileCache.TargetSize))
{
//this will trigger Resources.UnloadUnusedAssets() as needed
TileCache.UnloadUnusedContent(ejected);
}
if (unloadAssetsPending)
{
if (lastUnloadAssets == null || lastUnloadAssets.isDone)
{
unloadAssetsPending = false;
lastUnloadAssets = Resources.UnloadUnusedAssets();
}
}
UpdateStats();
}
protected override void UpdateStats()
{
//this works but is very inefficient and drags down framerate significantly when many tilesets are loaded
//foreach (var tileset in tilesets)
//{
// tileset.UpdateStats();
//}
RequestManager.ForEachQueuedDownload(t => { t.Tileset.Statistics.RequestQueueLength++; });
RequestManager.ForEachActiveDownload(t => { t.Tileset.Statistics.ActiveDownloads++; });
foreach (var tile in ProcessingQueue)
{
tile.Tileset.Statistics.ProcessingQueueLength++;
}
TileCache.ForEach(t => {
t.Tileset.Statistics.DownloadedTiles++;
if (t.ContentState == Unity3DTileContentState.READY)
{
t.Tileset.Statistics.ReadyTiles++;
}
});
Unity3DTilesetStatistics.MaxLoadedTiles = TileCache.MaxSize;
Stats = Unity3DTilesetStatistics.Aggregate(tilesets.Select(t => t.Statistics).ToArray());
}