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Re: [ft-devel] inconsistently dropping sub-pixel features
From: |
Werner LEMBERG |
Subject: |
Re: [ft-devel] inconsistently dropping sub-pixel features |
Date: |
Sat, 20 Mar 2010 08:08:40 +0100 (CET) |
> The reason that the dropout correction doesn't get applied to the
> 'incorrect' case is because in ftraster.c:Horizontal_Sweep_Drop, line
> 2608:
>
> e1 = TRUNC( pxl );
>
> if ( e1 >= 0 && e1 < ras.target.rows )
>
> pxl is -4096 and e1 drops to -1, so we don't mark the pixel in the
> raster.
>
> pxl is set from either e1 or e2, which according to the comment are
> the centres of the pixels. I think these are not expected to both be
> below 0....
Can you provide a font which I can use to do some debugging? Which
parameters shall I use for, say, ftview?
Werner
- [ft-devel] inconsistently dropping sub-pixel features, Ken Sharp, 2010/03/17
- Re: [ft-devel] inconsistently dropping sub-pixel features, James Cloos, 2010/03/18
- Re: [ft-devel] inconsistently dropping sub-pixel features, Ken Sharp, 2010/03/18
- Re: [ft-devel] inconsistently dropping sub-pixel features, Ken Sharp, 2010/03/19
- Re: [ft-devel] inconsistently dropping sub-pixel features,
Werner LEMBERG <=
- Re: [ft-devel] inconsistently dropping sub-pixel features, Ken Sharp, 2010/03/20
- Re: [ft-devel] inconsistently dropping sub-pixel features, Werner LEMBERG, 2010/03/20
- Re: [ft-devel] inconsistently dropping sub-pixel features, Ken Sharp, 2010/03/21
- Re: [ft-devel] inconsistently dropping sub-pixel features, Werner LEMBERG, 2010/03/21
- Re: [ft-devel] inconsistently dropping sub-pixel features, Ken Sharp, 2010/03/22
Re: [ft-devel] inconsistently dropping sub-pixel features, Werner LEMBERG, 2010/03/19