Bug 854296, part 2 - Document Moz2D's JoinStyle::MITER to note that its behavior is backend dependant. r=Bas
--- a/gfx/2d/Types.h
+++ b/gfx/2d/Types.h
@@ -201,18 +201,20 @@ MOZ_BEGIN_ENUM_CLASS(PatternType, int8_t
SURFACE,
LINEAR_GRADIENT,
RADIAL_GRADIENT
MOZ_END_ENUM_CLASS(PatternType)
MOZ_BEGIN_ENUM_CLASS(JoinStyle, int8_t)
BEVEL,
ROUND,
- MITER,
- MITER_OR_BEVEL
+ MITER, //!< Mitered if within the miter limit, else, if the backed supports
+ //!< it (D2D), the miter is clamped. If the backend does not support
+ //!< miter clamping the behavior is as for MITER_OR_BEVEL.
+ MITER_OR_BEVEL //!< Mitered if within the miter limit, else beveled.
MOZ_END_ENUM_CLASS(JoinStyle)
MOZ_BEGIN_ENUM_CLASS(CapStyle, int8_t)
BUTT,
ROUND,
SQUARE
MOZ_END_ENUM_CLASS(CapStyle)
