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[cogl-color] Adds a cogl_color_equal() function

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CoglColors shouldn't be compared using memcmp since they may contain
uninitialized padding bytes.

The prototype is also suitable for passing to g_hash_table_new as the
key_equal_func.

_cogl_pango_display_list_add_texture now uses this instead of memcmp.
This commit is contained in:
Robert Bragg
2009-06-05 12:58:31 +01:00
parent aca1bf4329
commit a8be68c83c
3 changed files with 32 additions and 2 deletions
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15
clutter/cogl/common/cogl-color.c
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@ -25,6 +25,8 @@
#include "config.h"
#endif
#include <string.h>
#include "cogl.h"
#include "cogl-color.h"
#include "cogl-fixed.h"
@ -184,3 +186,16 @@ cogl_set_source_color4f (float red,
cogl_color_set_from_4f (&c, red, green, blue, alpha);
cogl_set_source_color (&c);
}
gboolean
cogl_color_equal (gconstpointer v1, gconstpointer v2)
{
const guint32 *c1 = v1, *c2 = v2;
g_return_val_if_fail (v1 != NULL, FALSE);
g_return_val_if_fail (v2 != NULL, FALSE);
/* XXX: We don't compare the padding */
return *c1 == *c2 ? TRUE : FALSE;
}