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- To: "Coordination of admins/developers of the game programming library Allegro" <alleg-developers@xxxxxxxxxx>
- Subject: Re: [AD] Font drawing bug
- From: "Trent Gamblin" <trent@xxxxxxxxxx>
- Date: Fri, 8 Aug 2008 08:03:38 -0600 (MDT)
On Fri, August 8, 2008 4:22 am, Peter Hull said:
> As you may have seen on allegro.cc I asked some people to test the
> A5
> demo on OS X.
> http://www.allegro.cc/forums/thread/597223
> There was a problem with font rendering which I tracked down to
> a5font_grab_font_from_bitmap. This function copies an input bitmap
> then chops out all the glyphs into subbitmaps. What I found was that
> the new copy is full of garbage so when the input bitmap is copied
> over it, the garbage remains if the input is translucent.
>
> I've solved it by clearing the bitmap first, but, before I commit
> it,
> should the fix instead be that _all_ bitmaps be blanked when they
> are
> created?
>
> Pete
What do you mean by "blanked"? Presently all bitmaps have their data
set to 0s unless the driver creates the bitmap memory itself. So I
think the answer is, yes, they should all be blanked.
Trent :{)>