[haiku-appserver] Re: another issue. ClipToPicture.

  • From: "DarkWyrm" <bpmagic@xxxxxxxxxxxxxxx>
  • To: haiku-appserver@xxxxxxxxxxxxx
  • Date: Thu, 28 Oct 2004 18:16:58 -0400 EDT

Here's a quote from an e-mail I have from a while ago when I asked 
George Hoffman that question:

> Well, in a drawing model that was a little better defined, in terms 
> of
> hit-rules, etc. these could be done in a number of ways... generating
> paths from the primitives and then using path-based clipping, for
> example.
> The BeOS drawing model was never unified enough to be able to do
> something like this, so ClipToPicture instead draws into a special
> "accelerated" canvas that takes the pixel spans that are generated 
> and
> converts them into BRegion rectangles and merges them with everything
> that has been drawn thus far.  That BRegion (or its inverse) is then
> used to clip the drawing.

In a lot of ways our server is a completely different animal from R5's, 
but at first glance I think that this doesn't sound too bad for us. 
Thoughts, guys?


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