From: Marcus Sundberg <mackan@stacken.kth.se>
  To  : ggi-develop@eskimo.com
  Date: Fri, 28 Aug 1998 11:01:04 +0200

Re: libggi doc changes

Andrew Apted wrote:
> 
> Marcus writes:
> 
> >  Well that's what I meant. But as Get/Put buffers don't have a
> >  fixed width they don't have a fixed stride either. Therefore
> >  we call it "modulo" or something like that. It's meaning will be
> >  that the horizontal buffer size must always be an integer multiple
> >  of it.
> 
> `modulo' sounds OK.  Putting it in the ggiGetPixelFormat() structure
> would be best IMHO, so we don't need any extra API.
> 
> Documentation:
>   The `modulo' field specifies the padding requirements for horizontal
>   lines in the buffer for ggiPutBox() and ggiPutHLine().  Padding can be
>   performed as follows:
> 
>      for (; cur_len % pixfmt->modulo; cur_len++) *buf++ = 0;
> 
>   [assuming cur_len is the current length of the line (in bytes), and buf
>    is a pointer to uint8].

I don't see why any target would bother what the contents of the
"offbuffer" area. So why confuse people with the = 0 part ?

//Marcus
-- 
-------------------------------+------------------------------------
        Marcus Sundberg        | http://www.stacken.kth.se/~mackan
 Royal Institute of Technology |       Phone: +46 707 295404
       Stockholm, Sweden       |   E-Mail: mackan@stacken.kth.se