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fix(mv4.c): fix few sse x64 functions

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Loïc GUEZO
2025-09-04 18:58:21 +02:00
parent 9ae586e0ba
commit 8443ad9372
1 changed files with 8 additions and 7 deletions
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15
src/math/mv4.c
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@@ -12,20 +12,21 @@ Vec4f_t mat4f_mul_vec4f(const Mat4f_t mat, Vec4f_t v)
Vec4f_t out;
#if defined (SIMD_X86)
__m128 vec = _mm_load_ps(v.data);
for (int i = 0; i < 4; i++)
{
__m128 row = _mm_load_ps(&mat.m[4*i]);
__m128 mul = _mm_mul_ps(row, vec);
__m128 shuf = _mm_movehl_ps(mul, mul);
for (int i = 0; i < 4; i++)
{
__m128 row = _mm_load_ps(&mat.m[i * 4]);
__m128 mul = _mm_mul_ps(row, vec);
__m128 shuf = _mm_shuffle_ps(mul, mul, _MM_SHUFFLE(2, 3, 0, 1)); // [y z y z]
__m128 sum = _mm_add_ps(mul, shuf);
shuf = _mm_movehl_ps(shuf, sum);
shuf = _mm_shuffle_ps(sum, sum, _MM_SHUFFLE(1, 0, 3, 2));
sum = _mm_add_ss(sum, shuf);
out.data[i] = _mm_cvtss_f32(sum);
}
#elif defined (SIMD_ARCH)
float32x4_t vec = vld1q_f32(v.data);