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izenynn
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lib/glm/simd/common.h
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240
lib/glm/simd/common.h
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/// @ref simd
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/// @file glm/simd/common.h
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#pragma once
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#include "platform.h"
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#if GLM_ARCH & GLM_ARCH_SSE2_BIT
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_add(glm_vec4 a, glm_vec4 b)
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{
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return _mm_add_ps(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec1_add(glm_vec4 a, glm_vec4 b)
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{
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return _mm_add_ss(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_sub(glm_vec4 a, glm_vec4 b)
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{
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return _mm_sub_ps(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec1_sub(glm_vec4 a, glm_vec4 b)
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{
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return _mm_sub_ss(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_mul(glm_vec4 a, glm_vec4 b)
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{
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return _mm_mul_ps(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec1_mul(glm_vec4 a, glm_vec4 b)
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{
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return _mm_mul_ss(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_div(glm_vec4 a, glm_vec4 b)
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{
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return _mm_div_ps(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec1_div(glm_vec4 a, glm_vec4 b)
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{
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return _mm_div_ss(a, b);
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_div_lowp(glm_vec4 a, glm_vec4 b)
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{
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return glm_vec4_mul(a, _mm_rcp_ps(b));
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_swizzle_xyzw(glm_vec4 a)
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{
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# if GLM_ARCH & GLM_ARCH_AVX2_BIT
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return _mm_permute_ps(a, _MM_SHUFFLE(3, 2, 1, 0));
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# else
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return _mm_shuffle_ps(a, a, _MM_SHUFFLE(3, 2, 1, 0));
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec1_fma(glm_vec4 a, glm_vec4 b, glm_vec4 c)
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{
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# if GLM_ARCH & GLM_ARCH_AVX2_BIT
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return _mm_fmadd_ss(a, b, c);
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# else
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return _mm_add_ss(_mm_mul_ss(a, b), c);
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_fma(glm_vec4 a, glm_vec4 b, glm_vec4 c)
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{
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# if GLM_ARCH & GLM_ARCH_AVX2_BIT
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return _mm_fmadd_ps(a, b, c);
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# else
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return glm_vec4_add(glm_vec4_mul(a, b), c);
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_abs(glm_vec4 x)
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{
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return _mm_and_ps(x, _mm_castsi128_ps(_mm_set1_epi32(0x7FFFFFFF)));
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}
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GLM_FUNC_QUALIFIER glm_ivec4 glm_ivec4_abs(glm_ivec4 x)
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{
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# if GLM_ARCH & GLM_ARCH_SSSE3_BIT
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return _mm_sign_epi32(x, x);
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# else
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glm_ivec4 const sgn0 = _mm_srai_epi32(x, 31);
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glm_ivec4 const inv0 = _mm_xor_si128(x, sgn0);
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glm_ivec4 const sub0 = _mm_sub_epi32(inv0, sgn0);
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return sub0;
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_sign(glm_vec4 x)
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{
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glm_vec4 const zro0 = _mm_setzero_ps();
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glm_vec4 const cmp0 = _mm_cmplt_ps(x, zro0);
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glm_vec4 const cmp1 = _mm_cmpgt_ps(x, zro0);
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glm_vec4 const and0 = _mm_and_ps(cmp0, _mm_set1_ps(-1.0f));
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glm_vec4 const and1 = _mm_and_ps(cmp1, _mm_set1_ps(1.0f));
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glm_vec4 const or0 = _mm_or_ps(and0, and1);;
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return or0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_round(glm_vec4 x)
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{
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# if GLM_ARCH & GLM_ARCH_SSE41_BIT
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return _mm_round_ps(x, _MM_FROUND_TO_NEAREST_INT);
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# else
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glm_vec4 const sgn0 = _mm_castsi128_ps(_mm_set1_epi32(0x80000000));
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glm_vec4 const and0 = _mm_and_ps(sgn0, x);
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glm_vec4 const or0 = _mm_or_ps(and0, _mm_set_ps1(8388608.0f));
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glm_vec4 const add0 = glm_vec4_add(x, or0);
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glm_vec4 const sub0 = glm_vec4_sub(add0, or0);
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return sub0;
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_floor(glm_vec4 x)
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{
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# if GLM_ARCH & GLM_ARCH_SSE41_BIT
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return _mm_floor_ps(x);
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# else
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glm_vec4 const rnd0 = glm_vec4_round(x);
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glm_vec4 const cmp0 = _mm_cmplt_ps(x, rnd0);
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glm_vec4 const and0 = _mm_and_ps(cmp0, _mm_set1_ps(1.0f));
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glm_vec4 const sub0 = glm_vec4_sub(rnd0, and0);
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return sub0;
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# endif
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}
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/* trunc TODO
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_trunc(glm_vec4 x)
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{
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return glm_vec4();
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}
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*/
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//roundEven
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_roundEven(glm_vec4 x)
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{
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glm_vec4 const sgn0 = _mm_castsi128_ps(_mm_set1_epi32(0x80000000));
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glm_vec4 const and0 = _mm_and_ps(sgn0, x);
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glm_vec4 const or0 = _mm_or_ps(and0, _mm_set_ps1(8388608.0f));
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glm_vec4 const add0 = glm_vec4_add(x, or0);
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glm_vec4 const sub0 = glm_vec4_sub(add0, or0);
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return sub0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_ceil(glm_vec4 x)
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{
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# if GLM_ARCH & GLM_ARCH_SSE41_BIT
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return _mm_ceil_ps(x);
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# else
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glm_vec4 const rnd0 = glm_vec4_round(x);
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glm_vec4 const cmp0 = _mm_cmpgt_ps(x, rnd0);
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glm_vec4 const and0 = _mm_and_ps(cmp0, _mm_set1_ps(1.0f));
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glm_vec4 const add0 = glm_vec4_add(rnd0, and0);
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return add0;
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_fract(glm_vec4 x)
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{
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glm_vec4 const flr0 = glm_vec4_floor(x);
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glm_vec4 const sub0 = glm_vec4_sub(x, flr0);
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return sub0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_mod(glm_vec4 x, glm_vec4 y)
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{
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glm_vec4 const div0 = glm_vec4_div(x, y);
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glm_vec4 const flr0 = glm_vec4_floor(div0);
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glm_vec4 const mul0 = glm_vec4_mul(y, flr0);
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glm_vec4 const sub0 = glm_vec4_sub(x, mul0);
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return sub0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_clamp(glm_vec4 v, glm_vec4 minVal, glm_vec4 maxVal)
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{
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glm_vec4 const min0 = _mm_min_ps(v, maxVal);
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glm_vec4 const max0 = _mm_max_ps(min0, minVal);
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return max0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_mix(glm_vec4 v1, glm_vec4 v2, glm_vec4 a)
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{
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glm_vec4 const sub0 = glm_vec4_sub(_mm_set1_ps(1.0f), a);
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glm_vec4 const mul0 = glm_vec4_mul(v1, sub0);
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glm_vec4 const mad0 = glm_vec4_fma(v2, a, mul0);
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return mad0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_step(glm_vec4 edge, glm_vec4 x)
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{
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glm_vec4 const cmp = _mm_cmple_ps(x, edge);
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return _mm_movemask_ps(cmp) == 0 ? _mm_set1_ps(1.0f) : _mm_setzero_ps();
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_smoothstep(glm_vec4 edge0, glm_vec4 edge1, glm_vec4 x)
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{
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glm_vec4 const sub0 = glm_vec4_sub(x, edge0);
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glm_vec4 const sub1 = glm_vec4_sub(edge1, edge0);
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glm_vec4 const div0 = glm_vec4_sub(sub0, sub1);
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glm_vec4 const clp0 = glm_vec4_clamp(div0, _mm_setzero_ps(), _mm_set1_ps(1.0f));
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glm_vec4 const mul0 = glm_vec4_mul(_mm_set1_ps(2.0f), clp0);
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glm_vec4 const sub2 = glm_vec4_sub(_mm_set1_ps(3.0f), mul0);
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glm_vec4 const mul1 = glm_vec4_mul(clp0, clp0);
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glm_vec4 const mul2 = glm_vec4_mul(mul1, sub2);
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return mul2;
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}
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// Agner Fog method
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_nan(glm_vec4 x)
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{
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glm_ivec4 const t1 = _mm_castps_si128(x); // reinterpret as 32-bit integer
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glm_ivec4 const t2 = _mm_sll_epi32(t1, _mm_cvtsi32_si128(1)); // shift out sign bit
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glm_ivec4 const t3 = _mm_set1_epi32(0xFF000000); // exponent mask
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glm_ivec4 const t4 = _mm_and_si128(t2, t3); // exponent
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glm_ivec4 const t5 = _mm_andnot_si128(t3, t2); // fraction
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glm_ivec4 const Equal = _mm_cmpeq_epi32(t3, t4);
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glm_ivec4 const Nequal = _mm_cmpeq_epi32(t5, _mm_setzero_si128());
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glm_ivec4 const And = _mm_and_si128(Equal, Nequal);
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return _mm_castsi128_ps(And); // exponent = all 1s and fraction != 0
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}
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// Agner Fog method
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_inf(glm_vec4 x)
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{
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glm_ivec4 const t1 = _mm_castps_si128(x); // reinterpret as 32-bit integer
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glm_ivec4 const t2 = _mm_sll_epi32(t1, _mm_cvtsi32_si128(1)); // shift out sign bit
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return _mm_castsi128_ps(_mm_cmpeq_epi32(t2, _mm_set1_epi32(0xFF000000))); // exponent is all 1s, fraction is 0
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}
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#endif//GLM_ARCH & GLM_ARCH_SSE2_BIT
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