diff options
author | Jeroen Bakker <jeroen@blender.org> | 2020-08-05 16:59:04 +0300 |
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committer | Jeroen Bakker <jeroen@blender.org> | 2020-08-05 16:59:04 +0300 |
commit | 2ca006f6c179b77ad954d883d0a92d05011640f4 (patch) | |
tree | dbbc45bacfdcb099ea8a168cd5a078b0a09e3c8d /intern/cycles | |
parent | 43d41675a4e5f2621285c9eeac6737c83bf44923 (diff) | |
parent | 87062d4d670c01c9c0835057aaf4164aea971e00 (diff) |
Merge branch 'blender-v2.90-release'
Diffstat (limited to 'intern/cycles')
-rw-r--r-- | intern/cycles/util/util_math_fast.h | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/intern/cycles/util/util_math_fast.h b/intern/cycles/util/util_math_fast.h index 4f92d2f10d3..07b0878e3d5 100644 --- a/intern/cycles/util/util_math_fast.h +++ b/intern/cycles/util/util_math_fast.h @@ -445,12 +445,10 @@ ccl_device_inline float fast_expf(float x) return fast_exp2f(x / M_LN2_F); } -#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 +#if defined(__KERNEL_CPU__) && !defined(_MSC_VER) +/* MSVC seems to have a code-gen bug here in at least SSE41/AVX, see + * T78047 and T78869 for details. Just disable for now, it only makes + * a small difference in denoising performance. */ ccl_device float4 fast_exp2f4(float4 x) { const float4 one = make_float4(1.0f); @@ -466,14 +464,16 @@ 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) { return fast_exp2f4(x / M_LN2_F); } +#else +ccl_device_inline float4 fast_expf4(float4 x) +{ + return make_float4(fast_expf(x.x), fast_expf(x.y), fast_expf(x.z), fast_expf(x.w)); +} #endif ccl_device_inline float fast_exp10(float x) |