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Diffstat (limited to 'src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index 30555f92a6d..e3d4c06b6f9 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -475,6 +475,17 @@ float_to_ubyte(float f) } } +static INLINE float +byte_to_float_tex(int8_t b) +{ + return (b == -128) ? -1.0F : b * 1.0F / 127.0F; +} + +static INLINE int8_t +float_to_byte_tex(float f) +{ + return (int8_t) (127.0F * f); +} /** * Calc log base 2 |