diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-09-13 15:20:31 -0600 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-09-13 15:22:52 -0600 |
| commit | 75c19eb5a1caf0c36e04270174579d0d7fec9ccb (patch) | |
| tree | 2cfa2e8563fc9aa9f9b07a81f98c797bcda684ac | |
| parent | 44e53b37a02933f238b438e5dc3a2891da5eb51a (diff) | |
gallium: add another value check to util_fast_pow()
Fixes glitches seen in morph3d demo.
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index 9b4ca3937..0b10622ee 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -272,8 +272,10 @@ util_fast_log2(float val) static INLINE float util_fast_pow(float x, float y) { - /* XXX this test may need adjustment */ - if (y >= 3.0 && -0.02f <= x && x <= 0.02f) + /* XXX these tests may need adjustment */ + if (y >= 3.0f && (-0.02f <= x && x <= 0.02f)) + return 0.0f; + if (y >= 50.0f && (-0.9f <= x && x <= 0.9f)) return 0.0f; return util_fast_exp2(util_fast_log2(x) * y); } |