docs/CHANGES: Mention new SDF module.
diff --git a/docs/CHANGES b/docs/CHANGES
index 7aba98b..e193b5f 100644
--- a/docs/CHANGES
+++ b/docs/CHANGES
@@ -2,14 +2,23 @@ CHANGES BETWEEN 2.10.4 and 2.11.0
I. IMPORTANT CHANGES
- - The legacy Type 1/CFF engine is further demoted due to lack of
- CFF2 charstring support. You now need to use FT_Property_Set to
- enable it besides T1/CFF_CONFIG_OPTION_OLD_ENGINE options.
+ - The legacy Type 1 and CFF engines are further demoted due to lack
+ of CFF2 charstring support. You now need to use `FT_Property_Set`
+ to enable it besides the `T1_CONFIG_OPTION_OLD_ENGINE` and
+ `CFF_CONFIG_OPTION_OLD_ENGINE` options.
+
+ - A new rendering module has been added to create 16-bit Signed
+ Distance Field (SDF) bitmaps for both outline and bitmap glyphs.
+ The new rendering mode is called `FT_RENDER_MODE_SDF`, the pixel
+ mode is `FT_PIXEL_MODE_GRAY16`, and the corresponding raster flag
+ is `FT_RASTER_FLAG_SDF`.
+
+ This work was Anuj Verma's GSoC 2020 project.
II. MISCELLANEOUS
- - `ttdebug' didn't show changed point coordinates (bug introduced in
+ - `ttdebug` didn't show changed point coordinates (bug introduced in
version 2.10.3).
- A new configuration macro `FT_DEBUG_LOGGING` is available. It