From: Jos Hulzink <josh@stack.nl>
  To  : ggi-develop@eskimo.com
  Date: Fri, 12 Nov 1999 10:45:09 +0100 (CET)

Re: default/fbdev/s3/virge.so

On Fri, 12 Nov 1999, Andrew Apted wrote:

> Jos Hulzink writes:
> 
> In my understanding of the GC, you only need to reprogram the hardware
> state (e.g. do a ViRGE_set_colors) when the GC has _changed_, and
> there's a number in the GC that tells you when it has changed.
> 
> Don't know how it works for big buffers of accel commands though, I'd
> probably think that having extra accel commands for changing contents
> of the GC would be a good idea.
> 
> >  and one programming GGI must do ugly tricks to get his lines and
> >  boxes in the colour he wants.
> 
> like this: ?
> 

As long as ggiDrawBox doesn't return before the accel is done, this
works. But this is not the case with PP buffers. Problem is that with :

ggiSetGCForeground(vis, &my_color);
ggiDrawBox(vis, x, y, w, h);
ggiSetGCForeground(vis, &my_color);

the second fg colour can be set before the DrawBox is executed. Someone
once wrote how to solve this, but I don't know where the text has gone...

Jos