diff options
| author | Stefan Werner <stefan.werner@tangent-animation.com> | 2018-11-23 15:08:15 +0300 |
|---|---|---|
| committer | Stefan Werner <stefan.werner@tangent-animation.com> | 2018-11-23 15:19:53 +0300 |
| commit | 071f4f4ce0b9520ab0c73d6d68365ad449ca8b80 (patch) | |
| tree | 9f37bfcac669366b9ad5fb7605f2fbbed9b71b0a /intern/cycles/util/util_math.h | |
| parent | 0a2b2d59a5897212ba3771503feb6770fb636bc8 (diff) | |
Cycles: Improved robustness of hair motion blur.motion_curve_fix
In some instances, the number of control vertices of a hair could change mid-frame.
Cycles would then be unable to calculate proper motion blur for those hairs. This adds
interpolated CVs to fill in for the missing data. While this will not necessarily result in
a fully accurate reconstruction of the guide hair, it preserves motion blur instead of disabling it.
Reviewers: #cycles, sergey
Reviewed By: #cycles, sergey
Subscribers: sergey, brecht, #cycles
Tags: #cycles
Differential Revision: https://developer.blender.org/D3695
Diffstat (limited to 'intern/cycles/util/util_math.h')
| -rw-r--r-- | intern/cycles/util/util_math.h | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/intern/cycles/util/util_math.h b/intern/cycles/util/util_math.h index 52aeb8d8599..6167119f873 100644 --- a/intern/cycles/util/util_math.h +++ b/intern/cycles/util/util_math.h @@ -157,7 +157,7 @@ ccl_device_inline T max4(const T& a, const T& b, const T& c, const T& d) { return max(max(a,b),max(c,d)); } -#endif /* __KERNEL_GPU__ */ +#endif /* __KERNEL_GPU__ */ ccl_device_inline float min4(float a, float b, float c, float d) { @@ -220,7 +220,31 @@ ccl_device_inline float __uint_as_float(uint i) u.i = i; return u.f; } -#endif /* __KERNEL_OPENCL__ */ + +ccl_device_inline int4 __float4_as_int4(float4 f) +{ +#ifdef __KERNEL_SSE__ + return int4(_mm_castps_si128(f.m128)); + #else + return make_int4(__float_as_int(f.x), + __float_as_int(f.y), + __float_as_int(f.z), + __float_as_int(f.w)); +#endif +} + +ccl_device_inline float4 __int4_as_float4(int4 i) +{ +#ifdef __KERNEL_SSE__ + return float4(_mm_castsi128_ps(i.m128)); +#else + return make_float4(__int_as_float(i.x), + __int_as_float(i.y), + __int_as_float(i.z), + __int_as_float(i.w)); +#endif +} +#endif /* __KERNEL_OPENCL__ */ /* Versions of functions which are safe for fast math. */ ccl_device_inline bool isnan_safe(float f) @@ -615,4 +639,4 @@ ccl_device_inline float2 map_to_sphere(const float3 co) CCL_NAMESPACE_END -#endif /* __UTIL_MATH_H__ */ +#endif /* __UTIL_MATH_H__ */ |