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| author | Eric Anholt <eric@anholt.net> | 2013-04-13 01:46:09 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2013-04-21 12:28:04 -0700 |
| commit | 47c0b5ecdd14ab5b07e4d3016e8dff7c9c3abb8b (patch) | |
| tree | f2ea5c4e3860d6fd7911b50d4440f3fda6807163 /src/mesa/main/macros.h | |
| parent | 1842dd08b83269816fe8eb8f2dcc1252f606fe48 (diff) | |
| download | external_mesa3d-47c0b5ecdd14ab5b07e4d3016e8dff7c9c3abb8b.zip external_mesa3d-47c0b5ecdd14ab5b07e4d3016e8dff7c9c3abb8b.tar.gz external_mesa3d-47c0b5ecdd14ab5b07e4d3016e8dff7c9c3abb8b.tar.bz2 | |
mesa: Introduce a globally-available minify() macro.
This matches u_minify()'s behavior, for consistency.
Reviewed-by: Brian Paul <brianp@vmware.com>
Diffstat (limited to 'src/mesa/main/macros.h')
| -rw-r--r-- | src/mesa/main/macros.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h index f6d38fb..b206aca 100644 --- a/src/mesa/main/macros.h +++ b/src/mesa/main/macros.h @@ -656,6 +656,12 @@ INTERP_4F(GLfloat t, GLfloat dst[4], const GLfloat out[4], const GLfloat in[4]) #define MIN3( A, B, C ) ((A) < (B) ? MIN2(A, C) : MIN2(B, C)) #define MAX3( A, B, C ) ((A) > (B) ? MAX2(A, C) : MAX2(B, C)) +static inline unsigned +minify(unsigned value, unsigned levels) +{ + return MAX2(1, value >> levels); +} + /** * Align a value up to an alignment value * |