I will try that, thank you.

Patrick


On Mon, Apr 21, 2014 at 11:21 PM, Werner LEMBERG <[email protected]> wrote:

>
> > I'm using the following instructions in Xgridfit to turn off dropout
> > control:
> >
> > <pre-program>
> >     <set-dropout-control flags="0" threshold="0"/>
> >     <set-dropout-type value="2"/>
> > </pre-program>
> >
> > My understanding is that a pixel should then be rendered if and only
> > if its center falls within or on the resulting gridfitted outline?
>
> Yes, provided Xgridfit doesn't do other nasty things with the
> bytecode.  You are checking the resulting instructions with a tool
> like ttx, I guess...
>
> > In the attached screenshot from FontForge the coordinates of the
> > final gridfitted points are (2,5), (0,7), (10,17) and (12,15) at 27
> > point, 96 dpi.  I would then expect that the pixels with centers
> > (2.5, 5.5) and (10.5, 16.5), which fall on the resulting outline,
> > would be rendered, but they are not.  The same relatively positioned
> > pixels are also not rendered at other point sizes.
>
> Similar to Xgridfit, I have no idea how FontForge exactly does its
> grid rendering :-)
>
> Please test with a FreeType demo program like ftview and check the
> result with a magnifier.  Then you can be certain how FreeType renders
> your font using its various rendering modes.
>
>
>     Werner
>
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