alpha problem

I was trying to do some overlapping alpha mapped 'grass edges' to break up the harsh edges on walls.
it works fine , but when the lightmap is overlayed , the alpha is destroyed.
where it should be transparent it is white.
is there a work around for this?

I don't think there is I remember something like this turning up in the bug reports...

http://www.blitzbasic.com/Community/posts.php?topic=28008

aghhh, bang goes my nice fluffy looking grass. just spent two hours on that bugger

also I have problem with sprites, the transparency is not total, ie you can still see the poly , though only faintly . obviously this is no good.
my sprites background is coloured black,0,0,0

That's a fog issue...

Autofade your sprites so they don't ever touch the fog and you'll be alright.

thanks rob, thats a big help

I fixed it with entity fx,8
which disbales fog.