125 lines
4 KiB
C
125 lines
4 KiB
C
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/// @ref simd
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/// @file glm/simd/geometric.h
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#pragma once
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#include "common.h"
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#if GLM_ARCH & GLM_ARCH_SSE2_BIT
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GLM_FUNC_DECL glm_vec4 glm_vec4_dot(glm_vec4 v1, glm_vec4 v2);
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GLM_FUNC_DECL glm_vec4 glm_vec1_dot(glm_vec4 v1, glm_vec4 v2);
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_length(glm_vec4 x)
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{
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glm_vec4 const dot0 = glm_vec4_dot(x, x);
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glm_vec4 const sqt0 = _mm_sqrt_ps(dot0);
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return sqt0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_distance(glm_vec4 p0, glm_vec4 p1)
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{
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glm_vec4 const sub0 = _mm_sub_ps(p0, p1);
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glm_vec4 const len0 = glm_vec4_length(sub0);
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return len0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_dot(glm_vec4 v1, glm_vec4 v2)
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{
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# if GLM_ARCH & GLM_ARCH_AVX_BIT
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return _mm_dp_ps(v1, v2, 0xff);
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# elif GLM_ARCH & GLM_ARCH_SSE3_BIT
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glm_vec4 const mul0 = _mm_mul_ps(v1, v2);
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glm_vec4 const hadd0 = _mm_hadd_ps(mul0, mul0);
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glm_vec4 const hadd1 = _mm_hadd_ps(hadd0, hadd0);
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return hadd1;
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# else
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glm_vec4 const mul0 = _mm_mul_ps(v1, v2);
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glm_vec4 const swp0 = _mm_shuffle_ps(mul0, mul0, _MM_SHUFFLE(2, 3, 0, 1));
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glm_vec4 const add0 = _mm_add_ps(mul0, swp0);
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glm_vec4 const swp1 = _mm_shuffle_ps(add0, add0, _MM_SHUFFLE(0, 1, 2, 3));
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glm_vec4 const add1 = _mm_add_ps(add0, swp1);
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return add1;
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec1_dot(glm_vec4 v1, glm_vec4 v2)
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{
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# if GLM_ARCH & GLM_ARCH_AVX_BIT
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return _mm_dp_ps(v1, v2, 0xff);
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# elif GLM_ARCH & GLM_ARCH_SSE3_BIT
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glm_vec4 const mul0 = _mm_mul_ps(v1, v2);
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glm_vec4 const had0 = _mm_hadd_ps(mul0, mul0);
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glm_vec4 const had1 = _mm_hadd_ps(had0, had0);
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return had1;
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# else
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glm_vec4 const mul0 = _mm_mul_ps(v1, v2);
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glm_vec4 const mov0 = _mm_movehl_ps(mul0, mul0);
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glm_vec4 const add0 = _mm_add_ps(mov0, mul0);
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glm_vec4 const swp1 = _mm_shuffle_ps(add0, add0, 1);
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glm_vec4 const add1 = _mm_add_ss(add0, swp1);
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return add1;
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# endif
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_cross(glm_vec4 v1, glm_vec4 v2)
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{
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glm_vec4 const swp0 = _mm_shuffle_ps(v1, v1, _MM_SHUFFLE(3, 0, 2, 1));
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glm_vec4 const swp1 = _mm_shuffle_ps(v1, v1, _MM_SHUFFLE(3, 1, 0, 2));
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glm_vec4 const swp2 = _mm_shuffle_ps(v2, v2, _MM_SHUFFLE(3, 0, 2, 1));
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glm_vec4 const swp3 = _mm_shuffle_ps(v2, v2, _MM_SHUFFLE(3, 1, 0, 2));
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glm_vec4 const mul0 = _mm_mul_ps(swp0, swp3);
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glm_vec4 const mul1 = _mm_mul_ps(swp1, swp2);
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glm_vec4 const sub0 = _mm_sub_ps(mul0, mul1);
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return sub0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_normalize(glm_vec4 v)
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{
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glm_vec4 const dot0 = glm_vec4_dot(v, v);
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glm_vec4 const isr0 = _mm_rsqrt_ps(dot0);
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glm_vec4 const mul0 = _mm_mul_ps(v, isr0);
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return mul0;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_faceforward(glm_vec4 N, glm_vec4 I, glm_vec4 Nref)
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{
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glm_vec4 const dot0 = glm_vec4_dot(Nref, I);
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glm_vec4 const sgn0 = glm_vec4_sign(dot0);
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glm_vec4 const mul0 = _mm_mul_ps(sgn0, _mm_set1_ps(-1.0f));
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glm_vec4 const mul1 = _mm_mul_ps(N, mul0);
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return mul1;
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}
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GLM_FUNC_QUALIFIER glm_vec4 glm_vec4_reflect(glm_vec4 I, glm_vec4 N)
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{
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glm_vec4 const dot0 = glm_vec4_dot(N, I);
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glm_vec4 const mul0 = _mm_mul_ps(N, dot0);
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glm_vec4 const mul1 = _mm_mul_ps(mul0, _mm_set1_ps(2.0f));
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glm_vec4 const sub0 = _mm_sub_ps(I, mul1);
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return sub0;
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}
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GLM_FUNC_QUALIFIER __m128 glm_vec4_refract(glm_vec4 I, glm_vec4 N, glm_vec4 eta)
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{
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glm_vec4 const dot0 = glm_vec4_dot(N, I);
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glm_vec4 const mul0 = _mm_mul_ps(eta, eta);
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glm_vec4 const mul1 = _mm_mul_ps(dot0, dot0);
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glm_vec4 const sub0 = _mm_sub_ps(_mm_set1_ps(1.0f), mul0);
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glm_vec4 const sub1 = _mm_sub_ps(_mm_set1_ps(1.0f), mul1);
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glm_vec4 const mul2 = _mm_mul_ps(sub0, sub1);
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if(_mm_movemask_ps(_mm_cmplt_ss(mul2, _mm_set1_ps(0.0f))) == 0)
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return _mm_set1_ps(0.0f);
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glm_vec4 const sqt0 = _mm_sqrt_ps(mul2);
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glm_vec4 const mad0 = glm_vec4_fma(eta, dot0, sqt0);
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glm_vec4 const mul4 = _mm_mul_ps(mad0, N);
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glm_vec4 const mul5 = _mm_mul_ps(eta, I);
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glm_vec4 const sub2 = _mm_sub_ps(mul5, mul4);
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return sub2;
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}
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#endif//GLM_ARCH & GLM_ARCH_SSE2_BIT
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