ref: 9cc89717be988ec5922fe029e5a4cf283efb0b0c
parent: a3edbfa983ba609673bfbd8a35727d7c3524d25a
author: Alexei Podtelezhnikov <[email protected]>
date: Tue Dec 15 17:36:19 EST 2020
Documentation edits.
--- a/include/freetype/ftlcdfil.h
+++ b/include/freetype/ftlcdfil.h
@@ -55,13 +55,12 @@
* 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.