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vec4: optimize vec4 normalize with SIMD

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This commit is contained in:
Recep Aslantas
2018-04-13 11:01:07 +03:00
parent 44728c536b
commit 0eb37da8bb
4 changed files with 66 additions and 22 deletions
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8
test/src/test_common.c
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@@ -91,6 +91,14 @@ test_assert_vec3_eq(vec3 v1, vec3 v2) {
assert_true(fabsf(v1[2] - v2[2]) <= 0.000009);
}
void
test_assert_vec4_eq(vec4 v1, vec4 v2) {
assert_true(fabsf(v1[0] - v2[0]) <= 0.000009); /* rounding errors */
assert_true(fabsf(v1[1] - v2[1]) <= 0.000009);
assert_true(fabsf(v1[2] - v2[2]) <= 0.000009);
assert_true(fabsf(v1[3] - v2[3]) <= 0.000009);
}
void
test_assert_quat_eq_abs(versor v1, versor v2) {
assert_true(fabsf(fabsf(v1[0]) - fabsf(v2[0])) <= 0.0009); /* rounding errors */

3
test/src/test_common.h
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@@ -34,6 +34,9 @@ test_assert_mat4_eq2(mat4 m1, mat4 m2, float eps);
void
test_assert_vec3_eq(vec3 v1, vec3 v2);
void
test_assert_vec4_eq(vec4 v1, vec4 v2);
void
test_assert_quat_eq(versor v1, versor v2);

29
test/src/test_vec4.c
View File

@@ -13,18 +13,43 @@ test_vec4_dot(vec4 a, vec4 b) {
return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
}
CGLM_INLINE
void
test_vec4_normalize_to(vec4 vec, vec4 dest) {
float norm;
norm = glm_vec4_norm(vec);
if (norm == 0.0f) {
dest[0] = dest[1] = dest[2] = dest[3] = 0.0f;
return;
}
glm_vec4_scale(vec, 1.0f / norm, dest);
}
void
test_vec4(void **state) {
vec4 v;
vec4 v, v1, v2;
int i;
float d1, d2;
/* test SSE/SIMD dot product */
for (i = 0; i < 100; i++) {
/* 1. test SSE/SIMD dot product */
test_rand_vec4(v);
d1 = glm_vec4_dot(v, v);
d2 = test_vec4_dot(v, v);
assert_true(fabsf(d1 - d2) <= 0.000009);
/* 2. test SIMD normalize */
test_vec4_normalize_to(v, v1);
glm_vec4_normalize_to(v, v2);
glm_vec4_normalize(v);
/* all must be same */
test_assert_vec4_eq(v1, v2);
test_assert_vec4_eq(v, v2);
}
}