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-rw-r--r--freetype/include/ftbitmap.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/freetype/include/ftbitmap.h b/freetype/include/ftbitmap.h
index e4b91925b..226c19827 100644
--- a/freetype/include/ftbitmap.h
+++ b/freetype/include/ftbitmap.h
@@ -4,7 +4,7 @@
/* */
/* FreeType utility functions for bitmaps (specification). */
/* */
-/* Copyright 2004-2006, 2008, 2013 by */
+/* Copyright 2004-2006, 2008, 2013, 2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -45,7 +45,9 @@ FT_BEGIN_HEADER
/* Handling FT_Bitmap objects. */
/* */
/* <Description> */
- /* This section contains functions for converting FT_Bitmap objects. */
+ /* This section contains functions for handling @FT_Bitmap objects. */
+ /* Note that none of the functions changes the bitmap's `flow' (as */
+ /* indicated by the sign of the `pitch' field in `FT_Bitmap'). */
/* */
/*************************************************************************/
@@ -122,6 +124,9 @@ FT_BEGIN_HEADER
/* If you want to embolden the bitmap owned by a @FT_GlyphSlotRec, */
/* you should call @FT_GlyphSlot_Own_Bitmap on the slot first. */
/* */
+ /* Bitmaps in @FT_PIXEL_MODE_GRAY2 and @FT_PIXEL_MODE_GRAY@ format */
+ /* are converted to @FT_PIXEL_MODE_GRAY format (i.e., 8bpp). */
+ /* */
FT_EXPORT( FT_Error )
FT_Bitmap_Embolden( FT_Library library,
FT_Bitmap* bitmap,