https://bugs.freedesktop.org/show_bug.cgi?id=32945
--- Comment #13 from Sven Arvidsson sa@whiz.se 2011-01-26 07:59:30 PST --- Created an attachment (id=42527) --> (https://bugs.freedesktop.org/attachment.cgi?id=42527) shadowtex screenshot
Okay, so if I have done this correctly, the small white area in the left corner is 48x16, if you mean the larger black and white rendering it seems to be 256x257.
I'm attaching a screenshot of shadowtex.