[pipe]: add Offset() util macro

2007-11-21 11:04:20 +00:00
parent 79ad82477a
commit e87efe7407
1 changed files with 1 additions and 0 deletions
--- a/src/mesa/pipe/p_util.h
+++ b/src/mesa/pipe/p_util.h
@@ -114,6 +114,7 @@ REALLOC( void *old_ptr, unsigned old_size, unsigned new_size )
 #define MAX2( A, B )   ( (A)>(B) ? (A) : (B) )

 #define Elements(x) sizeof(x)/sizeof(*(x))
+#define Offset(TYPE, MEMBER) ((unsigned)&(((TYPE *)NULL)->MEMBER))

 /**
 * Return a pointer aligned to next multiple of 16 bytes.