[Mesa3d-dev] Texture utils

[Gareth H. <ga...@va...>]

Just in case you aren't already convinced, this is how easy it was to
special-case a commonly-used Tribes2 texture format:

#define CONVERT_TEXEL( src )						\
		({ GLushort s = *(GLushort *)src;			\
		   s = (s >> 1) | ((s & 1) << 15); s; })

#define CONVERT_TEXEL_DWORD( src )					\
		({ GLuint s = *(GLuint *)src;				\
		   s = (((s & 0xfffefffe) >> 1) |			\
			((s & 0x00010001) << 15)); s; })

#define SRC_TEXEL_BYTES		2

#define TAG(x) x##_rgba5551_to_argb1555
#define PRESERVE_DST_TYPE
#include "texutil_tmp.h"

Nice n' easy...

-- Gareth