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mesa: Move is_power_of_two() function from brw_context.h to macros.h.

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This makes the function available from core Mesa code, including the
GLSL compiler.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke
2014-04-06 17:29:48 -07:00
parent 6bda3a5267
commit bd69f65f90
2 changed files with 11 additions and 6 deletions
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6
src/mesa/drivers/dri/i965/brw_context.h
View File

@@ -1430,12 +1430,6 @@ struct brw_context
struct intel_screen *intelScreen; struct intel_screen *intelScreen;
}; };
static inline bool
is_power_of_two(uint32_t value)
{
return (value & (value - 1)) == 0;
}
/*====================================================================== /*======================================================================
* brw_vtbl.c * brw_vtbl.c
*/ */

11
src/mesa/main/macros.h
View File

@@ -684,6 +684,17 @@ minify(unsigned value, unsigned levels)
return MAX2(1, value >> levels); return MAX2(1, value >> levels);
} }
/**
* Return true if the given value is a power of two.
*
* Note that this considers 0 a power of two.
*/
static inline bool
is_power_of_two(unsigned value)
{
return (value & (value - 1)) == 0;
}
/** /**
* Align a value up to an alignment value * Align a value up to an alignment value
* *