Visible tile - Help?

I know what is possible tile is visible on the globe out of this method?

'Source\Scene\GlobeSurfaceTileProvider.js': GlobeSurfaceTileProvider.prototype.computeTileVisibility = function(tile, frameState, occluders)

I need to know which tile is visible ... I know there is to know which tiles are in the render queue, but it includes different levels. (I'm doing a search data from tiles and when I lean, takes tiles below the current level)

What is the functionality you are actually trying to implement? There’s no public API for easily determining tile visibility.