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author | Alexei Podtelezhnikov <apodtele@gmail.com> | 2020-12-15 22:36:19 -0500 |
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committer | Alexei Podtelezhnikov <apodtele@gmail.com> | 2020-12-15 22:36:19 -0500 |
commit | 9cc89717be988ec5922fe029e5a4cf283efb0b0c (patch) | |
tree | 8bd9079b5fec6ab020528786cb0bea81971fa73d | |
parent | a3edbfa983ba609673bfbd8a35727d7c3524d25a (diff) | |
download | freetype2-9cc89717be988ec5922fe029e5a4cf283efb0b0c.tar.gz |
Documentation edits.
-rw-r--r-- | include/freetype/ftlcdfil.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/include/freetype/ftlcdfil.h b/include/freetype/ftlcdfil.h index c6995f2ff..82da9eaa8 100644 --- a/include/freetype/ftlcdfil.h +++ b/include/freetype/ftlcdfil.h @@ -55,13 +55,12 @@ FT_BEGIN_HEADER * ClearType-style LCD rendering exploits the color-striped structure of * LCD pixels, increasing the available resolution in the direction of * the stripe (usually horizontal RGB) by a factor of~3. Using the - * subpixels coverages unfiltered can create severe color fringes + * subpixel coverages unfiltered can create severe color fringes * especially when rendering thin features. Indeed, to produce * black-on-white text, the nearby color subpixels must be dimmed - * equally. - * - * A good 5-tap FIR filter should be applied to subpixel coverages - * regardless of pixel boundaries and should have these properties: + * evenly. Therefore, an equalizing 5-tap FIR filter should be applied + * to subpixel coverages regardless of pixel boundaries and should have + * these properties: * * 1. It should be symmetrical, like {~a, b, c, b, a~}, to avoid * any shifts in appearance. |