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[simd] Make mmulf safe for src=dst

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I guess I'd forgotten that the parameters are actually pointers.
This commit is contained in:
Bill Currie 2021-04-29 19:25:31 +09:00
parent c86f0c9449
commit cb7d2671d8
1 changed files with 10 additions and 4 deletions
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14
include/QF/simd/mat4f.h
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@ -77,10 +77,16 @@ VISIBLE
void
mmulf (mat4f_t c, const mat4f_t a, const mat4f_t b)
{
c[0] = a[0] * b[0][0] + a[1] * b[0][1] + a[2] * b[0][2] + a[3] * b[0][3];
c[1] = a[0] * b[1][0] + a[1] * b[1][1] + a[2] * b[1][2] + a[3] * b[1][3];
c[2] = a[0] * b[2][0] + a[1] * b[2][1] + a[2] * b[2][2] + a[3] * b[2][3];
c[3] = a[0] * b[3][0] + a[1] * b[3][1] + a[2] * b[3][2] + a[3] * b[3][3];
mat4f_t t;
t[0] = a[0] * b[0][0] + a[1] * b[0][1] + a[2] * b[0][2] + a[3] * b[0][3];
t[1] = a[0] * b[1][0] + a[1] * b[1][1] + a[2] * b[1][2] + a[3] * b[1][3];
t[2] = a[0] * b[2][0] + a[1] * b[2][1] + a[2] * b[2][2] + a[3] * b[2][3];
t[3] = a[0] * b[3][0] + a[1] * b[3][1] + a[2] * b[3][2] + a[3] * b[3][3];
c[0] = t[0];
c[1] = t[1];
c[2] = t[2];
c[3] = t[3];
}
#ifndef IMPLEMENT_MAT4F_Funcs