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matrix_4x4_lookat - remove memset

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twinaphex 2016-11-04 20:32:26 +01:00
parent 7fc1d76c4c
commit f4e27befb4
1 changed files with 6 additions and 3 deletions
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9
libretro-common/gfx/math/matrix_4x4.c
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@ -254,23 +254,26 @@ void matrix_4x4_lookat(math_matrix_4x4 *out,
vec3_cross(&s[0], &f[0], up);
vec3_normalize(&s[0]);
vec3_cross(&t[0], &s[0], f);
memset(out, 0, sizeof(*out));
MAT_ELEM_4X4(*out, 0, 0) = s[0];
MAT_ELEM_4X4(*out, 0, 1) = t[0];
MAT_ELEM_4X4(*out, 0, 2) = -f[0];
MAT_ELEM_4X4(*out, 0, 3) = 0.0f;
MAT_ELEM_4X4(*out, 1, 0) = s[1];
MAT_ELEM_4X4(*out, 1, 1) = t[1];
MAT_ELEM_4X4(*out, 1, 2) = -f[1];
MAT_ELEM_4X4(*out, 1, 3) = 0.0f;
MAT_ELEM_4X4(*out, 2, 0) = s[2];
MAT_ELEM_4X4(*out, 2, 1) = t[2];
MAT_ELEM_4X4(*out, 2, 2) = -f[2];
MAT_ELEM_4X4(*out, 2, 3) = 0.0f;
MAT_ELEM_4X4(*out, 3, 0) = 0.0f;
MAT_ELEM_4X4(*out, 3, 1) = 0.0f;
MAT_ELEM_4X4(*out, 3, 2) = 0.0f;
MAT_ELEM_4X4(*out, 3, 3) = 1.f;
#if 0