Rendering parametters used to specify brightness, gamma
correction and other usefull stuff. Use aa_defrenderparams
for default values.
int x1
Column of top left coner of rendered area
(in characters!).
int y1
Row of top left coner of rendered area.
int x2
Column of bottom right coner of rendered area.
int y2
Row of bottom right coner of rendered area.
DESCRIPTION
This function does the trick of converting the emulated framebuffer
into high quality ASCII-art. If you want to be really fast, you might
use aa_fastrender. If you want to emulate palette, use aa_renderpalette.
Note that to see the effect you need to call aa_flush too.
First call to this function may take a while, because the rendering
tables are produced.