Font rendering hints - RT-36146 - progress?

Phil Race philip.race at
Tue Jun 16 04:46:42 UTC 2015

If you can figure out some apps for which there is source and provide 
those tweaks
that might help understand the differences but I am not sure it will be 
as straightforward as you hope.


On 6/15/15 1:52 PM, Felix Bembrick wrote:
> The thing is that the way DirectWrite is utilised now by JavaFX either 
> through which hints are applied by default or by some other way, the 
> result is text which does not render exactly the same way as (almost) 
> every native Windows application that also utilises DirectWrite.
> Wouldn't a simpler solution (or at least a first step) be just to 
> tweak the hints and options until JavaFX font rendering on Windows 
> matches the way native apps do it?  I believe at the moment all the 
> default options are selected so perhaps experimenting with some of the 
> non-default options or examining actual code of some native apps to 
> see which options/hints they are setting would arrive at a "best 
> match" configuration that could replace the "all defaults" 
> configuration we have now?
> Then, later down the track, these hints/options could potentially be 
> made user-configurable.
> On 16 June 2015 at 06:05, Phil Race <philip.race at 
> <mailto:philip.race at>> wrote:
>     I would have to look at it starting more or less from scratch
>     and I do not know that it would be as simple as providing a
>     way to tweak DirectWrite rendering. The
>     differences seem to be quite small differences in sub-pixel
>     intensity and sub-pixel accumulation of the total advance.
>     I do not know what API or client produced the 'native' rendering.
>     And what if someone else wants something different again ?
>     So I am not sure when we will get to looking into this and
>     deciding if it makes sense.
>     -phil.
>     On 06/14/2015 02:31 PM, Felix Bembrick wrote:
>         ​Has anyone had a look at this, done some work on it or can
>         provide some
>         details as to its progress?
>         Thanks,
>         Felix​
>         On 11 June 2015 at 13:50, Felix Bembrick
>         <felix.bembrick at <mailto:felix.bembrick at>>
>         wrote:
>             I am following this one closely and hoping that some
>             progress has been
>             made and that a fix is planned but it's difficult to
>             determine from the
>             JIRA issue.
>             Does anyone have any additional info on where this issue
>             is at?
>             Thanks,
>             Felix

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