the patch itself is very rough, nearly as is from gingerbread, submitted to CM just to grab attention, but anyway...
"Change I271fd87c: libagl: Allow use of copybit to accelerate 2D rendering"
some also suggested this patch in addition:
from the same guy. May be this will help native screenshots:
Edited by pier11, 09 March 2012 - 12:53 AM.