[AGG] Subpixel problem - 90/180 deg. lines

[Oyvind I. <oyv...@gm...>]

When a line segment is 90 or 180 degrees (has same x or y), the subpixel
logic makes the lines appear as 50% transparent and twice as fat as they
should
be. For example, the fill in this polygon is 1 pixel wide stroked lines:

http://img233.imageshack.us/i/agg.png/

Is there any way to ommit this, such as a stock conv_something<> ?

If not, maybe a conv_round<> or something like that rounds of to whole
pixels
would be the way to go ?


-- Oyvind