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-rw-r--r--libass/ass.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/libass/ass.h b/libass/ass.h
index 0778a5c..cb85a2c 100644
--- a/libass/ass.h
+++ b/libass/ass.h
@@ -56,6 +56,13 @@ typedef struct ass_image {
/*
* Hinting type. (see ass_set_hinting below)
*
+ * Setting hinting to anything but ASS_HINTING_NONE will put libass in a mode
+ * that reduces compatibility with vsfilter and many ASS scripts. The main
+ * problem is that hinting conflicts with smooth scaling, which precludes
+ * animations and precise positioning.
+ *
+ * In other words, enabling hinting might break some scripts severely.
+ *
* FreeType's native hinter is still buggy sometimes and it is recommended
* to use the light autohinter, ASS_HINTING_LIGHT, instead. For best
* compatibility with problematic fonts, disable hinting.