Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-30 Thread Chris Wilson
On Tue, 27 Sep 2011 12:51:51 +0200, sandm...@cs.au.dk (=?utf-8?Q?S=C3=B8ren?= Sandmann) wrote: > Chris Wilson writes: > > > Cairo, for instance, has a subtly different interpretation of how to use > > the mask in combination with the Porter-Duff operators. In particular, > > it has the notion of

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-27 Thread Søren Sandmann
Chris Wilson writes: > Cairo, for instance, has a subtly different interpretation of how to use > the mask in combination with the Porter-Duff operators. In particular, > it has the notion of a clip mask, for which pixman has no parallel. A question I have is, how much of a speedup is this reall

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-19 Thread Taekyun Kim
On 09/17/2011 12:29 AM, Søren Sandmann wrote: Chris Wilson writes: On Thu, 15 Sep 2011 13:26:09 +0200, sandm...@cs.au.dk (=?utf-8?Q?S=C3=B8ren?= Sandmann) wrote: Chris Wilson writes: Did you see Taekyun Kim's reply to this? He proposes this API: pixman_image_composite_xrender(op, s

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-16 Thread Søren Sandmann
Chris Wilson writes: > On Thu, 15 Sep 2011 13:26:09 +0200, sandm...@cs.au.dk (=?utf-8?Q?S=C3=B8ren?= > Sandmann) wrote: >> Chris Wilson writes: >> >> >> Did you see Taekyun Kim's reply to this? He proposes this API: >> >> >> >> pixman_image_composite_xrender(op, src, shape, clip, dst) >>

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-15 Thread Bill Spitzak
Søren Sandmann wrote: Chris Wilson writes: Cairo, for instance, has a subtly different interpretation of how to use the mask in combination with the Porter-Duff operators. In particular, it has the notion of a clip mask, for which pixman has no parallel. Quoting Soeren: Another aspect is

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-15 Thread Chris Wilson
On Thu, 15 Sep 2011 13:26:09 +0200, sandm...@cs.au.dk (=?utf-8?Q?S=C3=B8ren?= Sandmann) wrote: > Chris Wilson writes: > > >> Did you see Taekyun Kim's reply to this? He proposes this API: > >> > >> pixman_image_composite_xrender(op, src, shape, clip, dst) > >> pixman_image_composite_b

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-15 Thread Søren Sandmann
Chris Wilson writes: >> Did you see Taekyun Kim's reply to this? He proposes this API: >> >> pixman_image_composite_xrender(op, src, shape, clip, dst) >> pixman_image_composite_bounded(op, src, shape, clip, dst) >> pixman_image_composite_simple(op, src, shape, clip, dst) >> >> in

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-15 Thread Chris Wilson
On Thu, 15 Sep 2011 11:36:57 +0200, sandm...@cs.au.dk (=?utf-8?Q?S=C3=B8ren?= Sandmann) wrote: > Chris Wilson writes: > > > Cairo, for instance, has a subtly different interpretation of how to use > > the mask in combination with the Porter-Duff operators. In particular, > > it has the notion of

Re: [Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-15 Thread Søren Sandmann
Chris Wilson writes: > Cairo, for instance, has a subtly different interpretation of how to use > the mask in combination with the Porter-Duff operators. In particular, > it has the notion of a clip mask, for which pixman has no parallel. > > Quoting Soeren: > > Another aspect is that cairo use

[Pixman] [PATCH 1/3] Add CLEAR and SRC linear interpolation operators

2011-09-14 Thread Chris Wilson
Cairo, for instance, has a subtly different interpretation of how to use the mask in combination with the Porter-Duff operators. In particular, it has the notion of a clip mask, for which pixman has no parallel. Quoting Soeren: Another aspect is that cairo uses a different rendering equation in