Sub-pixel rendering coup

[George Edward Purdy]

The one thing a lot of people I know who use Windows 2000 have talked about
that tempted them to switch to Windows XP despite the bloat is ClearType
subpixel rendering technology, an alternate to simple font smoothing
introduced in Windows 95.
If ReactOS can offer superior subpixel rendering of fonts (ala Photoshop or
better) I could see it seriously competing.

[Jasper van de Gronde]

I'm curious, what kind of subpixel rendering does Photoshop use?
I myself can't stand ClearType, so if it's possible to do something
similar, only better, that sounds like a good idea to me.
George Edward Purdy wrote:
>   The one thing a lot of people I know who use Windows
> 2000 have talked about
>  that tempted them to switch to Windows XP despite the bloat is ClearType
>  subpixel rendering technology, an alternate to simple font smoothing
>  introduced in Windows 95.
>  If ReactOS can offer superior subpixel rendering of fonts (ala Photoshop or
>  better) I could see it seriously competing.
>

[Robert Köpferl]

Photoshop does oversampling in a memory DC and then
applies various filter cores to make the downsize.
For different rendering / downsizing 'algorithms'
.... I think.
Jasper van de Gronde schrieb:
>   I'm curious, what kind of subpixel rendering does
> Photoshop use?
>  I myself can't stand ClearType, so if it's possible to do something
>  similar, only better, that sounds like a good idea to me.
>  George Edward Purdy wrote:
> >   The one thing a lot of people I know who use
> > Windows 2000 have talked
> >  about
> >  that tempted them to switch to Windows XP despite the bloat is ClearType
> >  subpixel rendering technology, an alternate to simple font smoothing
> >  introduced in Windows 95.
> >  If ReactOS can offer superior subpixel rendering of fonts (ala
> >  Photoshop or
> >  better) I could see it seriously competing.
> >  
>  _______________________________________________
>  ros-general mailing list
>  ros-general(a)reactos.com
>  http://reactos.com/mailman/listinfo/ros-general

[Jasper van de Gronde]

But wouldn't that just be some kind of (probably very nice)
anti-aliasing? Because that isn't what ClearType is about. ClearType
tries to triple the horizontal resolution by using the fact that LCD
screens have red, green and blue subpixels (very small vertical lines,
you can see them if you use a magnifying glass or look very closely at
the screen).
The problem I have with this solution is that it looks a bit messy to
me, probably because of the colored edges.
Nevertheless, some people seem to like the effect, so it probably would
a good idea to implement some day.
Robert Köpferl wrote:
>   Photoshop does oversampling in a memory DC and then
>  applies various filter cores to make the downsize.
>  For different rendering / downsizing 'algorithms'
>  .... I think.
>  Jasper van de Gronde schrieb:
> >   I'm curious, what kind of subpixel rendering
> > does Photoshop use?
> >  I myself can't stand ClearType, so if it's possible to do something
> >  similar, only better, that sounds like a good idea to me.
> >  George Edward Purdy wrote:
> > >   The one thing a lot of people I know who use
> > > Windows 2000 have talked
> > >  about
> > >  that tempted them to switch to Windows XP despite the bloat is ClearType
> > >  subpixel rendering technology, an alternate to simple font smoothing
> > >  introduced in Windows 95.
> > >  If ReactOS can offer superior subpixel rendering of fonts (ala
> > >  Photoshop or
> > >  better) I could see it seriously competing.
> > >  
> >  _______________________________________________
> >  ros-general mailing list
> >  ros-general(a)reactos.com
> >  http://reactos.com/mailman/listinfo/ros-general 
>  _______________________________________________
>  ros-general mailing list
>  ros-general(a)reactos.com
>  http://reactos.com/mailman/listinfo/ros-general
>

[Robert Köpferl]

Subpixeling is just working on three 3*bigger memDCs but drawing
slightly displaced.
However: We're lucky because freetype2 contains subpixel antialiassing.
WXP's is howver is hard to beat.
Jasper van de Gronde schrieb:
>   But wouldn't that just be some kind of (probably
> very nice)
>  anti-aliasing? Because that isn't what ClearType is about. ClearType
>  tries to triple the horizontal resolution by using the fact that LCD
>  screens have red, green and blue subpixels (very small vertical lines,
>  you can see them if you use a magnifying glass or look very closely at
>  the screen).
>  The problem I have with this solution is that it looks a bit messy to
>  me, probably because of the colored edges.
>  Nevertheless, some people seem to like the effect, so it probably would
>  a good idea to implement some day.
>  Robert Köpferl wrote:
> >   Photoshop does oversampling in a memory DC and
> > then
> >  applies various filter cores to make the downsize.
> >  For different rendering / downsizing 'algorithms'
> >  .... I think.
> >  Jasper van de Gronde schrieb:
> > >   I'm curious, what kind of subpixel rendering
> > > does Photoshop use?
> > >  I myself can't stand ClearType, so if it's possible to do something
> > >  similar, only better, that sounds like a good idea to me.
> > >  George Edward Purdy wrote:
> > > >   The one thing a lot of people I know who use
> > > > Windows 2000 have
> > > >  talked about
> > > >  that tempted them to switch to Windows XP despite the bloat is
> > > >  ClearType
> > > >  subpixel rendering technology, an alternate to simple font smoothing
> > > >  introduced in Windows 95.
> > > >  If ReactOS can offer superior subpixel rendering of fonts (ala
> > > >  Photoshop or
> > > >  better) I could see it seriously competing.
> > > >  
> > >  _______________________________________________
> > >  ros-general mailing list
> > >  ros-general(a)reactos.com
> > >  http://reactos.com/mailman/listinfo/ros-general 
> >  _______________________________________________
> >  ros-general mailing list
> >  ros-general(a)reactos.com
> >  http://reactos.com/mailman/listinfo/ros-general
> >  
>  _______________________________________________
>  ros-general mailing list
>  ros-general(a)reactos.com
>  http://reactos.com/mailman/listinfo/ros-general
>

[Filip Navara]

Hi!
ReactOS uses FreeType for renderning fonts so our font rendering
capabilities are limited to what FreeType provides. There is an
incomplete support for FT_RENDER_MODE_LCD mode in FreeType that should
do more or less the same as ClearType, but unfortunetly it's not
finished and using it causes crashes.
Filip
George Edward Purdy wrote:
>  The one thing a lot of people I know who use Windows
> 2000 have talked about
> that tempted them to switch to Windows XP despite the bloat is ClearType
> subpixel rendering technology, an alternate to simple font smoothing
> introduced in Windows 95.
> If ReactOS can offer superior subpixel rendering of fonts (ala Photoshop or
> better) I could see it seriously competing.
> _______________________________________________
> ros-general mailing list
> ros-general(a)reactos.com
> http://reactos.com/mailman/listinfo/ros-general
>