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cogl-bitmask: Add _cogl_bitmask_set_flags

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This adds a _cogl_bitmask_set_flags function which can be used to copy
the values from a CoglBitmask to an array of unsigned longs which can
be used with the COGL_FLAGS_* macros. The values are or'd in so that
in can be used multiple times to combine multiple bitmasks.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts 2011-11-03 16:50:39 +00:00
parent d2fd168351
commit 4e760d51f1
2 changed files with 32 additions and 1 deletions
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11
cogl/cogl-bitmask.c
View File

@ -260,3 +260,14 @@ _cogl_bitmask_foreach (const CoglBitmask *bitmask,
COGL_FLAGS_FOREACH_END;
}
}
void
_cogl_bitmask_set_flags_array (const CoglBitmask *bitmask,
unsigned long *flags)
{
const GArray *array = (const GArray *) *bitmask;
int i;
for (i = 0; i < array->len; i++)
flags[i] |= g_array_index (array, unsigned long, i);
}

22
cogl/cogl-bitmask.h
View File

@ -101,6 +101,9 @@ _cogl_bitmask_set_range_in_array (CoglBitmask *bitmask,
void
_cogl_bitmask_clear_all_in_array (CoglBitmask *bitmask);
void
_cogl_bitmask_set_flags_array (const CoglBitmask *bitmask,
unsigned long *flags);
/*
* cogl_bitmask_set_bits:
* @dst: The bitmask to modify
@ -233,7 +236,24 @@ _cogl_bitmask_clear_all (CoglBitmask *bitmask)
*bitmask = _cogl_bitmask_from_bits (0);
}
/*
* _cogl_bitmask_set_flags:
* @bitmask: A pointer to a bitmask
* @flags: An array of flags
*
* Bitwise or's the bits from @bitmask into the flags array (see
* cogl-flags) pointed to by @flags.
*/
static inline void
_cogl_bitmask_set_flags (const CoglBitmask *bitmask,
unsigned long *flags)
{
if (_cogl_bitmask_has_array (bitmask))
return _cogl_bitmask_set_flags_array (bitmask, flags);
else
flags[0] |= _cogl_bitmask_to_bits (bitmask);
}
G_END_DECLS
#endif /* __COGL_BITMASK_H */