[Tilesathome] Blank tile handling

[Rob Reid]

spaetz wrote the following on 14/08/2008 21:57:
> The server has to recreate those empty tiles recursively and I am not sure whether it's more costly to the server to process those 1500 tile files or whether to recreate the blankness state by recursing down. We will still not create blank tiles if the whole parent tile was empty,
>
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> r9818 | spaetz | 2008-08-14 11:56:17 +0200 (Thu, 14 Aug 2008) | 1 line
>
> Do away with the whole "do we need to create a blank tile here" optimization. The server needs those anyway, it's less work for the client. Tileset uploads are only slightly bigger, and we still skip empty sub-regions.
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>
> I have rerendered your test case and it looks good now.
>   
Thanks for fixing that.
While we are on the subject of blank tiles, is there any way to optimise 
the blank tile handling for maplint tiles. I understand it gets forced 
to produce a full tileset by the RenderFullTileset option in layers.conf 
but I find it a little depressing when watching it rendering a 
completely blank tileset when it flys through the tile layer only 
creating one blank tile and then chugs through maplint layer creating 
341 blank tiles.

rcr