diff options
Diffstat (limited to 'intern/cycles/util/util_math_fast.h')
| -rw-r--r-- | intern/cycles/util/util_math_fast.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/intern/cycles/util/util_math_fast.h b/intern/cycles/util/util_math_fast.h index dbed83ab84d..e979bd9e0c0 100644 --- a/intern/cycles/util/util_math_fast.h +++ b/intern/cycles/util/util_math_fast.h @@ -446,6 +446,11 @@ ccl_device_inline float fast_expf(float x) } #ifndef __KERNEL_GPU__ +/* MSVC seems to have a code-gen bug here in at least SSE41/AVX + * see T78047 for details. */ +# ifdef _MSC_VER +# pragma optimize("", off) +# endif ccl_device float4 fast_exp2f4(float4 x) { const float4 one = make_float4(1.0f); @@ -461,6 +466,9 @@ ccl_device float4 fast_exp2f4(float4 x) r = madd4(x, r, make_float4(1.0f)); return __int4_as_float4(__float4_as_int4(r) + (m << 23)); } +# ifdef _MSC_VER +# pragma optimize("", on) +# endif ccl_device_inline float4 fast_expf4(float4 x) { |