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Diffstat (limited to 'intern/cycles/util/ssef.h')
| -rw-r--r-- | intern/cycles/util/ssef.h | 1104 |
1 files changed, 1104 insertions, 0 deletions
diff --git a/intern/cycles/util/ssef.h b/intern/cycles/util/ssef.h new file mode 100644 index 00000000000..ea5e78b54d2 --- /dev/null +++ b/intern/cycles/util/ssef.h @@ -0,0 +1,1104 @@ +/* + * Copyright 2011-2013 Intel Corporation + * Modifications Copyright 2014, Blender Foundation. + * + * Licensed under the Apache License, Version 2.0(the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __UTIL_SSEF_H__ +#define __UTIL_SSEF_H__ + +#include "util/ssei.h" + +CCL_NAMESPACE_BEGIN + +#ifdef __KERNEL_SSE2__ + +struct sseb; +struct ssef; + +/*! 4-wide SSE float type. */ +struct ssef { + typedef sseb Mask; // mask type + typedef ssei Int; // int type + typedef ssef Float; // float type + + enum { size = 4 }; // number of SIMD elements + union { + __m128 m128; + float f[4]; + int i[4]; + }; // data + + //////////////////////////////////////////////////////////////////////////////// + /// Constructors, Assignment & Cast Operators + //////////////////////////////////////////////////////////////////////////////// + + __forceinline ssef() + { + } + __forceinline ssef(const ssef &other) + { + m128 = other.m128; + } + __forceinline ssef &operator=(const ssef &other) + { + m128 = other.m128; + return *this; + } + + __forceinline ssef(const __m128 a) : m128(a) + { + } + __forceinline operator const __m128 &() const + { + return m128; + } + __forceinline operator __m128 &() + { + return m128; + } + + __forceinline ssef(float a) : m128(_mm_set1_ps(a)) + { + } + __forceinline ssef(float a, float b, float c, float d) : m128(_mm_setr_ps(a, b, c, d)) + { + } + + __forceinline explicit ssef(const __m128i a) : m128(_mm_cvtepi32_ps(a)) + { + } + + //////////////////////////////////////////////////////////////////////////////// + /// Loads and Stores + //////////////////////////////////////////////////////////////////////////////// + +# if defined(__KERNEL_AVX__) + static __forceinline ssef broadcast(const void *const a) + { + return _mm_broadcast_ss((float *)a); + } +# else + static __forceinline ssef broadcast(const void *const a) + { + return _mm_set1_ps(*(float *)a); + } +# endif + + //////////////////////////////////////////////////////////////////////////////// + /// Array Access + //////////////////////////////////////////////////////////////////////////////// + + __forceinline const float &operator[](const size_t i) const + { + assert(i < 4); + return f[i]; + } + __forceinline float &operator[](const size_t i) + { + assert(i < 4); + return f[i]; + } +}; + +//////////////////////////////////////////////////////////////////////////////// +/// Unary Operators +//////////////////////////////////////////////////////////////////////////////// + +__forceinline const ssef cast(const __m128i &a) +{ + return _mm_castsi128_ps(a); +} +__forceinline const ssef operator+(const ssef &a) +{ + return a; +} +__forceinline const ssef operator-(const ssef &a) +{ + return _mm_xor_ps(a.m128, _mm_castsi128_ps(_mm_set1_epi32(0x80000000))); +} +__forceinline const ssef abs(const ssef &a) +{ + return _mm_and_ps(a.m128, _mm_castsi128_ps(_mm_set1_epi32(0x7fffffff))); +} +# if defined(__KERNEL_SSE41__) +__forceinline const ssef sign(const ssef &a) +{ + return _mm_blendv_ps(ssef(1.0f), -ssef(1.0f), _mm_cmplt_ps(a, ssef(0.0f))); +} +# endif +__forceinline const ssef signmsk(const ssef &a) +{ + return _mm_and_ps(a.m128, _mm_castsi128_ps(_mm_set1_epi32(0x80000000))); +} + +__forceinline const ssef rcp(const ssef &a) +{ + const ssef r = _mm_rcp_ps(a.m128); + return _mm_sub_ps(_mm_add_ps(r, r), _mm_mul_ps(_mm_mul_ps(r, r), a)); +} +__forceinline const ssef sqr(const ssef &a) +{ + return _mm_mul_ps(a, a); +} +__forceinline const ssef mm_sqrt(const ssef &a) +{ + return _mm_sqrt_ps(a.m128); +} +__forceinline const ssef rsqrt(const ssef &a) +{ + const ssef r = _mm_rsqrt_ps(a.m128); + return _mm_add_ps( + _mm_mul_ps(_mm_set_ps(1.5f, 1.5f, 1.5f, 1.5f), r), + _mm_mul_ps(_mm_mul_ps(_mm_mul_ps(a, _mm_set_ps(-0.5f, -0.5f, -0.5f, -0.5f)), r), + _mm_mul_ps(r, r))); +} + +//////////////////////////////////////////////////////////////////////////////// +/// Binary Operators +//////////////////////////////////////////////////////////////////////////////// + +__forceinline const ssef operator+(const ssef &a, const ssef &b) +{ + return _mm_add_ps(a.m128, b.m128); +} +__forceinline const ssef operator+(const ssef &a, const float &b) +{ + return a + ssef(b); +} +__forceinline const ssef operator+(const float &a, const ssef &b) +{ + return ssef(a) + b; +} + +__forceinline const ssef operator-(const ssef &a, const ssef &b) +{ + return _mm_sub_ps(a.m128, b.m128); +} +__forceinline const ssef operator-(const ssef &a, const float &b) +{ + return a - ssef(b); +} +__forceinline const ssef operator-(const float &a, const ssef &b) +{ + return ssef(a) - b; +} + +__forceinline const ssef operator*(const ssef &a, const ssef &b) +{ + return _mm_mul_ps(a.m128, b.m128); +} +__forceinline const ssef operator*(const ssef &a, const float &b) +{ + return a * ssef(b); +} +__forceinline const ssef operator*(const float &a, const ssef &b) +{ + return ssef(a) * b; +} + +__forceinline const ssef operator/(const ssef &a, const ssef &b) +{ + return _mm_div_ps(a.m128, b.m128); +} +__forceinline const ssef operator/(const ssef &a, const float &b) +{ + return a / ssef(b); +} +__forceinline const ssef operator/(const float &a, const ssef &b) +{ + return ssef(a) / b; +} + +__forceinline const ssef operator^(const ssef &a, const ssef &b) +{ + return _mm_xor_ps(a.m128, b.m128); +} +__forceinline const ssef operator^(const ssef &a, const ssei &b) +{ + return _mm_xor_ps(a.m128, _mm_castsi128_ps(b.m128)); +} + +__forceinline const ssef operator&(const ssef &a, const ssef &b) +{ + return _mm_and_ps(a.m128, b.m128); +} +__forceinline const ssef operator&(const ssef &a, const ssei &b) +{ + return _mm_and_ps(a.m128, _mm_castsi128_ps(b.m128)); +} + +__forceinline const ssef operator|(const ssef &a, const ssef &b) +{ + return _mm_or_ps(a.m128, b.m128); +} +__forceinline const ssef operator|(const ssef &a, const ssei &b) +{ + return _mm_or_ps(a.m128, _mm_castsi128_ps(b.m128)); +} + +__forceinline const ssef andnot(const ssef &a, const ssef &b) +{ + return _mm_andnot_ps(a.m128, b.m128); +} + +__forceinline const ssef min(const ssef &a, const ssef &b) +{ + return _mm_min_ps(a.m128, b.m128); +} +__forceinline const ssef min(const ssef &a, const float &b) +{ + return _mm_min_ps(a.m128, ssef(b)); +} +__forceinline const ssef min(const float &a, const ssef &b) +{ + return _mm_min_ps(ssef(a), b.m128); +} + +__forceinline const ssef max(const ssef &a, const ssef &b) +{ + return _mm_max_ps(a.m128, b.m128); +} +__forceinline const ssef max(const ssef &a, const float &b) +{ + return _mm_max_ps(a.m128, ssef(b)); +} +__forceinline const ssef max(const float &a, const ssef &b) +{ + return _mm_max_ps(ssef(a), b.m128); +} + +# if defined(__KERNEL_SSE41__) +__forceinline ssef mini(const ssef &a, const ssef &b) +{ + const ssei ai = _mm_castps_si128(a); + const ssei bi = _mm_castps_si128(b); + const ssei ci = _mm_min_epi32(ai, bi); + return _mm_castsi128_ps(ci); +} +# endif + +# if defined(__KERNEL_SSE41__) +__forceinline ssef maxi(const ssef &a, const ssef &b) +{ + const ssei ai = _mm_castps_si128(a); + const ssei bi = _mm_castps_si128(b); + const ssei ci = _mm_max_epi32(ai, bi); + return _mm_castsi128_ps(ci); +} +# endif + +//////////////////////////////////////////////////////////////////////////////// +/// Ternary Operators +//////////////////////////////////////////////////////////////////////////////// + +__forceinline const ssef madd(const ssef &a, const ssef &b, const ssef &c) +{ +# if defined(__KERNEL_NEON__) + return vfmaq_f32(c, a, b); +# elif defined(__KERNEL_AVX2__) + return _mm_fmadd_ps(a, b, c); +# else + return a * b + c; +# endif +} +__forceinline const ssef msub(const ssef &a, const ssef &b, const ssef &c) +{ +# if defined(__KERNEL_NEON__) + return vfmaq_f32(vnegq_f32(c), a, b); +# elif defined(__KERNEL_AVX2__) + return _mm_fmsub_ps(a, b, c); +# else + return a * b - c; +# endif +} +__forceinline const ssef nmadd(const ssef &a, const ssef &b, const ssef &c) +{ +# if defined(__KERNEL_NEON__) + return vfmsq_f32(c, a, b); +# elif defined(__KERNEL_AVX2__) + return _mm_fnmadd_ps(a, b, c); +# else + return c - a * b; +# endif +} +__forceinline const ssef nmsub(const ssef &a, const ssef &b, const ssef &c) +{ +# if defined(__KERNEL_NEON__) + return vfmsq_f32(vnegq_f32(c), a, b); +# elif defined(__KERNEL_AVX2__) + return _mm_fnmsub_ps(a, b, c); +# else + return -a * b - c; +# endif +} + +//////////////////////////////////////////////////////////////////////////////// +/// Assignment Operators +//////////////////////////////////////////////////////////////////////////////// + +__forceinline ssef &operator+=(ssef &a, const ssef &b) +{ + return a = a + b; +} +__forceinline ssef &operator+=(ssef &a, const float &b) +{ + return a = a + b; +} + +__forceinline ssef &operator-=(ssef &a, const ssef &b) +{ + return a = a - b; +} +__forceinline ssef &operator-=(ssef &a, const float &b) +{ + return a = a - b; +} + +__forceinline ssef &operator*=(ssef &a, const ssef &b) +{ + return a = a * b; +} +__forceinline ssef &operator*=(ssef &a, const float &b) +{ + return a = a * b; +} + +__forceinline ssef &operator/=(ssef &a, const ssef &b) +{ + return a = a / b; +} +__forceinline ssef &operator/=(ssef &a, const float &b) +{ + return a = a / b; +} + +//////////////////////////////////////////////////////////////////////////////// +/// Comparison Operators + Select +//////////////////////////////////////////////////////////////////////////////// + +__forceinline const sseb operator==(const ssef &a, const ssef &b) +{ + return _mm_cmpeq_ps(a.m128, b.m128); +} +__forceinline const sseb operator==(const ssef &a, const float &b) +{ + return a == ssef(b); +} +__forceinline const sseb operator==(const float &a, const ssef &b) +{ + return ssef(a) == b; +} + +__forceinline const sseb operator!=(const ssef &a, const ssef &b) +{ + return _mm_cmpneq_ps(a.m128, b.m128); +} +__forceinline const sseb operator!=(const ssef &a, const float &b) +{ + return a != ssef(b); +} +__forceinline const sseb operator!=(const float &a, const ssef &b) +{ + return ssef(a) != b; +} + +__forceinline const sseb operator<(const ssef &a, const ssef &b) +{ + return _mm_cmplt_ps(a.m128, b.m128); +} +__forceinline const sseb operator<(const ssef &a, const float &b) +{ + return a < ssef(b); +} +__forceinline const sseb operator<(const float &a, const ssef &b) +{ + return ssef(a) < b; +} + +__forceinline const sseb operator>=(const ssef &a, const ssef &b) +{ + return _mm_cmpnlt_ps(a.m128, b.m128); +} +__forceinline const sseb operator>=(const ssef &a, const float &b) +{ + return a >= ssef(b); +} +__forceinline const sseb operator>=(const float &a, const ssef &b) +{ + return ssef(a) >= b; +} + +__forceinline const sseb operator>(const ssef &a, const ssef &b) +{ + return _mm_cmpnle_ps(a.m128, b.m128); +} +__forceinline const sseb operator>(const ssef &a, const float &b) +{ + return a > ssef(b); +} +__forceinline const sseb operator>(const float &a, const ssef &b) +{ + return ssef(a) > b; +} + +__forceinline const sseb operator<=(const ssef &a, const ssef &b) +{ + return _mm_cmple_ps(a.m128, b.m128); +} +__forceinline const sseb operator<=(const ssef &a, const float &b) +{ + return a <= ssef(b); +} +__forceinline const sseb operator<=(const float &a, const ssef &b) +{ + return ssef(a) <= b; +} + +__forceinline const ssef select(const sseb &m, const ssef &t, const ssef &f) +{ +# ifdef __KERNEL_SSE41__ + return _mm_blendv_ps(f, t, m); +# else + return _mm_or_ps(_mm_and_ps(m, t), _mm_andnot_ps(m, f)); +# endif +} + +__forceinline const ssef select(const ssef &m, const ssef &t, const ssef &f) +{ +# ifdef __KERNEL_SSE41__ + return _mm_blendv_ps(f, t, m); +# else + return _mm_or_ps(_mm_and_ps(m, t), _mm_andnot_ps(m, f)); +# endif +} + +__forceinline const ssef select(const int mask, const ssef &t, const ssef &f) +{ +# if defined(__KERNEL_SSE41__) && \ + ((!defined(__clang__) && !defined(_MSC_VER)) || defined(__INTEL_COMPILER)) + return _mm_blend_ps(f, t, mask); +# else + return select(sseb(mask), t, f); +# endif +} + +//////////////////////////////////////////////////////////////////////////////// +/// Rounding Functions +//////////////////////////////////////////////////////////////////////////////// + +# if defined(__KERNEL_SSE41__) +__forceinline const ssef round_even(const ssef &a) +{ +# ifdef __KERNEL_NEON__ + return vrndnq_f32(a); +# else + return _mm_round_ps(a, _MM_FROUND_TO_NEAREST_INT); +# endif +} +__forceinline const ssef round_down(const ssef &a) +{ +# ifdef __KERNEL_NEON__ + return vrndmq_f32(a); +# else + return _mm_round_ps(a, _MM_FROUND_TO_NEG_INF); +# endif +} +__forceinline const ssef round_up(const ssef &a) +{ +# ifdef __KERNEL_NEON__ + return vrndpq_f32(a); +# else + return _mm_round_ps(a, _MM_FROUND_TO_POS_INF); +# endif +} +__forceinline const ssef round_zero(const ssef &a) +{ +# ifdef __KERNEL_NEON__ + return vrndq_f32(a); +# else + return _mm_round_ps(a, _MM_FROUND_TO_ZERO); +# endif +} +__forceinline const ssef floor(const ssef &a) +{ +# ifdef __KERNEL_NEON__ + return vrndnq_f32(a); +# else + return _mm_round_ps(a, _MM_FROUND_TO_NEG_INF); +# endif +} +__forceinline const ssef ceil(const ssef &a) +{ +# ifdef __KERNEL_NEON__ + return vrndpq_f32(a); +# else + return _mm_round_ps(a, _MM_FROUND_TO_POS_INF); +# endif +} +# endif + +__forceinline ssei truncatei(const ssef &a) +{ + return _mm_cvttps_epi32(a.m128); +} + +/* This is about 25% faster than straightforward floor to integer conversion + * due to better pipelining. + * + * Unsaturated add 0xffffffff (a < 0) is the same as subtract -1. + */ +__forceinline ssei floori(const ssef &a) +{ + return truncatei(a) + cast((a < 0.0f).m128); +} + +__forceinline ssef floorfrac(const ssef &x, ssei *i) +{ + *i = floori(x); + return x - ssef(*i); +} + +//////////////////////////////////////////////////////////////////////////////// +/// Common Functions +//////////////////////////////////////////////////////////////////////////////// + +__forceinline ssef mix(const ssef &a, const ssef &b, const ssef &t) +{ + return madd(t, b, (ssef(1.0f) - t) * a); +} + +//////////////////////////////////////////////////////////////////////////////// +/// Movement/Shifting/Shuffling Functions +//////////////////////////////////////////////////////////////////////////////// + +__forceinline ssef unpacklo(const ssef &a, const ssef &b) +{ + return _mm_unpacklo_ps(a.m128, b.m128); +} +__forceinline ssef unpackhi(const ssef &a, const ssef &b) +{ + return _mm_unpackhi_ps(a.m128, b.m128); +} + +template<size_t i0, size_t i1, size_t i2, size_t i3> +__forceinline const ssef shuffle(const ssef &b) +{ +# ifdef __KERNEL_NEON__ + return shuffle_neon<float32x4_t, i0, i1, i2, i3>(b.m128); +# else + return _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(b), _MM_SHUFFLE(i3, i2, i1, i0))); +# endif +} + +template<> __forceinline const ssef shuffle<0, 1, 0, 1>(const ssef &a) +{ + return _mm_movelh_ps(a, a); +} + +template<> __forceinline const ssef shuffle<2, 3, 2, 3>(const ssef &a) +{ + return _mm_movehl_ps(a, a); +} + +template<size_t i0, size_t i1, size_t i2, size_t i3> +__forceinline const ssef shuffle(const ssef &a, const ssef &b) +{ +# ifdef __KERNEL_NEON__ + return shuffle_neon<float32x4_t, i0, i1, i2, i3>(a, b); +# else + return _mm_shuffle_ps(a, b, _MM_SHUFFLE(i3, i2, i1, i0)); +# endif +} + +template<size_t i0> __forceinline const ssef shuffle(const ssef &a, const ssef &b) +{ +# ifdef __KERNEL_NEON__ + return shuffle_neon<float32x4_t, i0, i0, i0, i0>(a, b); +# else + return _mm_shuffle_ps(a, b, _MM_SHUFFLE(i0, i0, i0, i0)); +# endif +} + +# ifndef __KERNEL_NEON__ +template<> __forceinline const ssef shuffle<0, 1, 0, 1>(const ssef &a, const ssef &b) +{ + return _mm_movelh_ps(a, b); +} + +template<> __forceinline const ssef shuffle<2, 3, 2, 3>(const ssef &a, const ssef &b) +{ + return _mm_movehl_ps(b, a); +} +# endif + +# if defined(__KERNEL_SSSE3__) +__forceinline const ssef shuffle8(const ssef &a, const ssei &shuf) +{ + return _mm_castsi128_ps(_mm_shuffle_epi8(_mm_castps_si128(a), shuf)); +} +# endif + +# if defined(__KERNEL_SSE3__) +template<> __forceinline const ssef shuffle<0, 0, 2, 2>(const ssef &b) +{ + return _mm_moveldup_ps(b); +} +template<> __forceinline const ssef shuffle<1, 1, 3, 3>(const ssef &b) +{ + return _mm_movehdup_ps(b); +} +# endif + +template<size_t i0> __forceinline const ssef shuffle(const ssef &b) +{ + return shuffle<i0, i0, i0, i0>(b); +} + +# if defined(__KERNEL_AVX__) +__forceinline const ssef shuffle(const ssef &a, const ssei &shuf) +{ + return _mm_permutevar_ps(a, shuf); +} +# endif + +template<size_t i> __forceinline float extract(const ssef &a) +{ + return _mm_cvtss_f32(shuffle<i, i, i, i>(a)); +} +template<> __forceinline float extract<0>(const ssef &a) +{ + return _mm_cvtss_f32(a); +} + +# if defined(__KERNEL_SSE41__) +template<size_t dst, size_t src, size_t clr> +__forceinline const ssef insert(const ssef &a, const ssef &b) +{ +# ifdef __KERNEL_NEON__ + ssef res = a; + if (clr) + res[dst] = 0; + else + res[dst] = b[src]; + return res; +# else + return _mm_insert_ps(a, b, (dst << 4) | (src << 6) | clr); +# endif +} +template<size_t dst, size_t src> __forceinline const ssef insert(const ssef &a, const ssef &b) +{ + return insert<dst, src, 0>(a, b); +} +template<size_t dst> __forceinline const ssef insert(const ssef &a, const float b) +{ + return insert<dst, 0>(a, _mm_set_ss(b)); +} +# else +template<size_t dst> __forceinline const ssef insert(const ssef &a, const float b) +{ + ssef c = a; + c[dst] = b; + return c; +} +# endif + +//////////////////////////////////////////////////////////////////////////////// +/// Transpose +//////////////////////////////////////////////////////////////////////////////// + +__forceinline void transpose(const ssef &r0, + const ssef &r1, + const ssef &r2, + const ssef &r3, + ssef &c0, + ssef &c1, + ssef &c2, + ssef &c3) +{ + ssef l02 = unpacklo(r0, r2); + ssef h02 = unpackhi(r0, r2); + ssef l13 = unpacklo(r1, r3); + ssef h13 = unpackhi(r1, r3); + c0 = unpacklo(l02, l13); + c1 = unpackhi(l02, l13); + c2 = unpacklo(h02, h13); + c3 = unpackhi(h02, h13); +} + +__forceinline void transpose( + const ssef &r0, const ssef &r1, const ssef &r2, const ssef &r3, ssef &c0, ssef &c1, ssef &c2) +{ + ssef l02 = unpacklo(r0, r2); + ssef h02 = unpackhi(r0, r2); + ssef l13 = unpacklo(r1, r3); + ssef h13 = unpackhi(r1, r3); + c0 = unpacklo(l02, l13); + c1 = unpackhi(l02, l13); + c2 = unpacklo(h02, h13); +} + +//////////////////////////////////////////////////////////////////////////////// +/// Reductions +//////////////////////////////////////////////////////////////////////////////// + +__forceinline const ssef vreduce_min(const ssef &v) +{ +# ifdef __KERNEL_NEON__ + return vdupq_n_f32(vminvq_f32(v)); +# else + ssef h = min(shuffle<1, 0, 3, 2>(v), v); + return min(shuffle<2, 3, 0, 1>(h), h); +# endif +} +__forceinline const ssef vreduce_max(const ssef &v) +{ +# ifdef __KERNEL_NEON__ + return vdupq_n_f32(vmaxvq_f32(v)); +# else + ssef h = max(shuffle<1, 0, 3, 2>(v), v); + return max(shuffle<2, 3, 0, 1>(h), h); +# endif +} +__forceinline const ssef vreduce_add(const ssef &v) +{ +# ifdef __KERNEL_NEON__ + return vdupq_n_f32(vaddvq_f32(v)); +# else + ssef h = shuffle<1, 0, 3, 2>(v) + v; + return shuffle<2, 3, 0, 1>(h) + h; +# endif +} + +__forceinline float reduce_min(const ssef &v) +{ +# ifdef __KERNEL_NEON__ + return vminvq_f32(v); +# else + return _mm_cvtss_f32(vreduce_min(v)); +# endif +} +__forceinline float reduce_max(const ssef &v) +{ +# ifdef __KERNEL_NEON__ + return vmaxvq_f32(v); +# else + return _mm_cvtss_f32(vreduce_max(v)); +# endif +} +__forceinline float reduce_add(const ssef &v) +{ +# ifdef __KERNEL_NEON__ + return vaddvq_f32(v); +# else + return _mm_cvtss_f32(vreduce_add(v)); +# endif +} + +__forceinline uint32_t select_min(const ssef &v) +{ + return __bsf(movemask(v == vreduce_min(v))); +} +__forceinline uint32_t select_max(const ssef &v) +{ + return __bsf(movemask(v == vreduce_max(v))); +} + +__forceinline uint32_t select_min(const sseb &valid, const ssef &v) +{ + const ssef a = select(valid, v, ssef(pos_inf)); + return __bsf(movemask(valid & (a == vreduce_min(a)))); +} +__forceinline uint32_t select_max(const sseb &valid, const ssef &v) +{ + const ssef a = select(valid, v, ssef(neg_inf)); + return __bsf(movemask(valid & (a == vreduce_max(a)))); +} + +__forceinline uint32_t movemask(const ssef &a) +{ + return _mm_movemask_ps(a); +} + +//////////////////////////////////////////////////////////////////////////////// +/// Memory load and store operations +//////////////////////////////////////////////////////////////////////////////// + +__forceinline ssef load4f(const float4 &a) +{ +# ifdef __KERNEL_WITH_SSE_ALIGN__ + return _mm_load_ps(&a.x); +# else + return _mm_loadu_ps(&a.x); +# endif +} + +__forceinline ssef load4f(const float3 &a) +{ +# ifdef __KERNEL_WITH_SSE_ALIGN__ + return _mm_load_ps(&a.x); +# else + return _mm_loadu_ps(&a.x); +# endif +} + +__forceinline ssef load4f(const void *const a) +{ + return _mm_load_ps((float *)a); +} + +__forceinline ssef load1f_first(const float a) +{ + return _mm_set_ss(a); +} + +__forceinline void store4f(void *ptr, const ssef &v) +{ + _mm_store_ps((float *)ptr, v); +} + +__forceinline ssef loadu4f(const void *const a) +{ + return _mm_loadu_ps((float *)a); +} + +__forceinline void storeu4f(void *ptr, const ssef &v) +{ + _mm_storeu_ps((float *)ptr, v); +} + +__forceinline void store4f(const sseb &mask, void *ptr, const ssef &f) +{ +# if defined(__KERNEL_AVX__) + _mm_maskstore_ps((float *)ptr, (__m128i)mask, f); +# else + *(ssef *)ptr = select(mask, f, *(ssef *)ptr); +# endif +} + +__forceinline ssef load4f_nt(void *ptr) +{ +# if defined(__KERNEL_SSE41__) + return _mm_castsi128_ps(_mm_stream_load_si128((__m128i *)ptr)); +# else + return _mm_load_ps((float *)ptr); +# endif +} + +__forceinline void store4f_nt(void *ptr, const ssef &v) +{ +# if defined(__KERNEL_SSE41__) + _mm_stream_ps((float *)ptr, v); +# else + _mm_store_ps((float *)ptr, v); +# endif +} + +//////////////////////////////////////////////////////////////////////////////// +/// Euclidian Space Operators +//////////////////////////////////////////////////////////////////////////////// + +__forceinline float dot(const ssef &a, const ssef &b) +{ + return reduce_add(a * b); +} + +/* calculate shuffled cross product, useful when order of components does not matter */ +__forceinline ssef cross_zxy(const ssef &a, const ssef &b) +{ + const ssef a0 = a; + const ssef b0 = shuffle<1, 2, 0, 3>(b); + const ssef a1 = shuffle<1, 2, 0, 3>(a); + const ssef b1 = b; + return msub(a0, b0, a1 * b1); +} + +__forceinline ssef cross(const ssef &a, const ssef &b) +{ + return shuffle<1, 2, 0, 3>(cross_zxy(a, b)); +} + +ccl_device_inline const ssef dot3_splat(const ssef &a, const ssef &b) +{ +# ifdef __KERNEL_SSE41__ + return _mm_dp_ps(a.m128, b.m128, 0x7f); +# else + ssef t = a * b; + return ssef(((float *)&t)[0] + ((float *)&t)[1] + ((float *)&t)[2]); +# endif +} + +/* squared length taking only specified axes into account */ +template<size_t X, size_t Y, size_t Z, size_t W> ccl_device_inline float len_squared(const ssef &a) +{ +# ifndef __KERNEL_SSE41__ + float4 &t = (float4 &)a; + return (X ? t.x * t.x : 0.0f) + (Y ? t.y * t.y : 0.0f) + (Z ? t.z * t.z : 0.0f) + + (W ? t.w * t.w : 0.0f); +# else + return extract<0>( + ssef(_mm_dp_ps(a.m128, a.m128, (X << 4) | (Y << 5) | (Z << 6) | (W << 7) | 0xf))); +# endif +} + +ccl_device_inline float dot3(const ssef &a, const ssef &b) +{ +# ifdef __KERNEL_SSE41__ + return extract<0>(ssef(_mm_dp_ps(a.m128, b.m128, 0x7f))); +# else + ssef t = a * b; + return ((float *)&t)[0] + ((float *)&t)[1] + ((float *)&t)[2]; +# endif +} + +ccl_device_inline const ssef len3_squared_splat(const ssef &a) +{ + return dot3_splat(a, a); +} + +ccl_device_inline float len3_squared(const ssef &a) +{ + return dot3(a, a); +} + +ccl_device_inline float len3(const ssef &a) +{ + return extract<0>(mm_sqrt(dot3_splat(a, a))); +} + +/* SSE shuffle utility functions */ + +# ifdef __KERNEL_SSSE3__ + +/* faster version for SSSE3 */ +typedef ssei shuffle_swap_t; + +ccl_device_inline shuffle_swap_t shuffle_swap_identity() +{ + return _mm_set_epi8(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0); +} + +ccl_device_inline shuffle_swap_t shuffle_swap_swap() +{ + return _mm_set_epi8(7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8); +} + +ccl_device_inline const ssef shuffle_swap(const ssef &a, const shuffle_swap_t &shuf) +{ + return cast(_mm_shuffle_epi8(cast(a), shuf)); +} + +# else + +/* somewhat slower version for SSE2 */ +typedef int shuffle_swap_t; + +ccl_device_inline shuffle_swap_t shuffle_swap_identity() +{ + return 0; +} + +ccl_device_inline shuffle_swap_t shuffle_swap_swap() +{ + return 1; +} + +ccl_device_inline const ssef shuffle_swap(const ssef &a, shuffle_swap_t shuf) +{ + /* shuffle value must be a constant, so we need to branch */ + if (shuf) + return shuffle<1, 0, 3, 2>(a); + else + return shuffle<3, 2, 1, 0>(a); +} + +# endif + +# if defined(__KERNEL_SSE41__) && !defined(__KERNEL_NEON__) + +ccl_device_inline void gen_idirsplat_swap(const ssef &pn, + const shuffle_swap_t &shuf_identity, + const shuffle_swap_t &shuf_swap, + const float3 &idir, + ssef idirsplat[3], + shuffle_swap_t shufflexyz[3]) +{ + const __m128 idirsplat_raw[] = {_mm_set_ps1(idir.x), _mm_set_ps1(idir.y), _mm_set_ps1(idir.z)}; + idirsplat[0] = _mm_xor_ps(idirsplat_raw[0], pn); + idirsplat[1] = _mm_xor_ps(idirsplat_raw[1], pn); + idirsplat[2] = _mm_xor_ps(idirsplat_raw[2], pn); + + const ssef signmask = cast(ssei(0x80000000)); + const ssef shuf_identity_f = cast(shuf_identity); + const ssef shuf_swap_f = cast(shuf_swap); + + shufflexyz[0] = _mm_castps_si128( + _mm_blendv_ps(shuf_identity_f, shuf_swap_f, _mm_and_ps(idirsplat_raw[0], signmask))); + shufflexyz[1] = _mm_castps_si128( + _mm_blendv_ps(shuf_identity_f, shuf_swap_f, _mm_and_ps(idirsplat_raw[1], signmask))); + shufflexyz[2] = _mm_castps_si128( + _mm_blendv_ps(shuf_identity_f, shuf_swap_f, _mm_and_ps(idirsplat_raw[2], signmask))); +} + +# else + +ccl_device_inline void gen_idirsplat_swap(const ssef &pn, + const shuffle_swap_t &shuf_identity, + const shuffle_swap_t &shuf_swap, + const float3 &idir, + ssef idirsplat[3], + shuffle_swap_t shufflexyz[3]) +{ + idirsplat[0] = ssef(idir.x) ^ pn; + idirsplat[1] = ssef(idir.y) ^ pn; + idirsplat[2] = ssef(idir.z) ^ pn; + + shufflexyz[0] = (idir.x >= 0) ? shuf_identity : shuf_swap; + shufflexyz[1] = (idir.y >= 0) ? shuf_identity : shuf_swap; + shufflexyz[2] = (idir.z >= 0) ? shuf_identity : shuf_swap; +} + +# endif + +ccl_device_inline const ssef uint32_to_float(const ssei &in) +{ + ssei a = _mm_srli_epi32(in, 16); + ssei b = _mm_and_si128(in, _mm_set1_epi32(0x0000ffff)); + ssei c = _mm_or_si128(a, _mm_set1_epi32(0x53000000)); + ssef d = _mm_cvtepi32_ps(b); + ssef e = _mm_sub_ps(_mm_castsi128_ps(c), _mm_castsi128_ps(_mm_set1_epi32(0x53000000))); + return _mm_add_ps(e, d); +} + +template<size_t S1, size_t S2, size_t S3, size_t S4> +ccl_device_inline const ssef set_sign_bit(const ssef &a) +{ + return cast(cast(a) ^ ssei(S1 << 31, S2 << 31, S3 << 31, S4 << 31)); +} + +//////////////////////////////////////////////////////////////////////////////// +/// Debug Functions +//////////////////////////////////////////////////////////////////////////////// + +ccl_device_inline void print_ssef(const char *label, const ssef &a) +{ + printf( + "%s: %.8f %.8f %.8f %.8f\n", label, (double)a[0], (double)a[1], (double)a[2], (double)a[3]); +} + +#endif + +CCL_NAMESPACE_END + +#endif |