Am 09.09.2010 23:04, schrieb Colin Marquardt:
AIUI, River was just asking who *could* free space, not pushing anybody to do so for useful stuff.
I just wanted to mention that there's a need for them.
I always wanted to make the rendering dynamic (and then never expire the tiles), but it would need a post-processing task in either renderd or tirex (the latter seems a bit more suited for that from what I read) for the alpha-channel stuff, and ideally do the metatiling in the same step.
It should not be to hard to write your own renderer. You may want to take a look at
http://trac.openstreetmap.org/browser/applications/utils/tirex/lib/Tirex/Backend/Test.pm and http://trac.openstreetmap.org/browser/applications/utils/tirex/backends/test
Peter