Basic

OverrunGL is designed based on Java FFM API.

C Types -> Java Types

MemoryLayouts describes a carrier and the byte size of a type.

The types in the table this below can be directly converted from/to C.

Value Layout	Java Type	C/C++ Type
JAVA_BYTE	byte	char
JAVA_SHORT	short	short
JAVA_INT	int	int
JAVA_LONG	long	long long
JAVA_CHAR	char	short
JAVA_BOOLEAN	boolean	char/bool
JAVA_FLOAT	float	float
JAVA_DOUBLE	double	double
ADDRESS	MemorySegment	void*

Any pointer types can be directly converted to MemorySegment even if it is a pointer of struct or other pointers of pointer.

✔️ int*
✔️ my_struct*
✔️ void**
✔️ other_struct***

Return values whose memory layout is ValueLayout.ADDRESS with target layout will be reinterpreted to correspoding size.