External/cglm
1
0
Fork 0
mirror of https://github.com/recp/cglm.git synced 2025-12-25 04:44:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

simd: optimize vec4_distance with sse and neon

Browse Source
This commit is contained in:
Recep Aslantas
2019-01-22 09:23:51 +03:00
parent f0c2a2984e
commit f65f1d491b
1 changed files with 15 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
include/cglm/vec4.h
View File

@@ -707,10 +707,25 @@ glm_vec4_normalize(vec4 v) {
CGLM_INLINE
float
glm_vec4_distance(vec4 a, vec4 b) {
#if defined( __SSE__ ) || defined( __SSE2__ )
__m128 x0;
x0 = _mm_sub_ps(glmm_load(b), glmm_load(a));
x0 = _mm_mul_ps(x0, x0);
x0 = _mm_add_ps(x0, glmm_shuff1(x0, 1, 0, 3, 2));
return _mm_cvtss_f32(_mm_sqrt_ss(_mm_add_ss(x0,
glmm_shuff1(x0, 0, 1, 0, 1))));
#elif defined(CGLM_NEON_FP)
float32x4_t v0;
float32_t r;
v0 = vsubq_f32(vld1q_f32(a), vld1q_f32(b));
r = vaddvq_f32(vmulq_f32(v0, v0));
return sqrtf(r);
#else
return sqrtf(glm_pow2(b[0] - a[0])
+ glm_pow2(b[1] - a[1])
+ glm_pow2(b[2] - a[2])
+ glm_pow2(b[3] - a[3]));
#endif
}
/*!