Am 2015-03-26 03:33, schrieb Eric Anholt:
The only reason _nf is useful is if you need to implement faster
software fallbacks -- otherwise, you should wrap above glamor, since
_nf
would have been equivalent to calling down.
For faster fallbacks, we could delay the uploading part at the end of
the fallback. So if the next call is also a fallback, we'd not have to
readback it again.
But this is in opposition to only readback the affected part of the
pixmap.
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