diff options
Diffstat (limited to 'intern/cycles/util/util_math_fast.h')
| -rw-r--r-- | intern/cycles/util/util_math_fast.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/intern/cycles/util/util_math_fast.h b/intern/cycles/util/util_math_fast.h index deb2013daae..d3960deb3b4 100644 --- a/intern/cycles/util/util_math_fast.h +++ b/intern/cycles/util/util_math_fast.h @@ -547,6 +547,9 @@ ccl_device_inline float fast_erff(float x) const float a5 = 0.0002765672f; const float a6 = 0.0000430638f; const float a = fabsf(x); + if(a >= 12.3f) { + return copysignf(1.0f, x); + } const float b = 1.0f - (1.0f - a); /* Crush denormals. */ const float r = madd(madd(madd(madd(madd(madd(a6, b, a5), b, a4), b, a3), b, a2), b, a1), b, 1.0f); const float s = r * r; /* ^2 */ |