diff options
| -rw-r--r-- | shared/matrix.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/shared/matrix.c b/shared/matrix.c index f301c5fa..72717f37 100644 --- a/shared/matrix.c +++ b/shared/matrix.c @@ -61,16 +61,16 @@ weston_matrix_multiply(struct weston_matrix *m, const struct weston_matrix *n) { struct weston_matrix tmp; const float *row, *column; - div_t d; - int i, j; + int i, j, k; - for (i = 0; i < 16; i++) { - tmp.d[i] = 0; - d = div(i, 4); - row = m->d + d.quot * 4; - column = n->d + d.rem; - for (j = 0; j < 4; j++) - tmp.d[i] += row[j] * column[j * 4]; + for (i = 0; i < 4; i++) { + row = m->d + i * 4; + for (j = 0; j < 4; j++) { + tmp.d[4 * i + j] = 0; + column = n->d + j; + for (k = 0; k < 4; k++) + tmp.d[4 * i + j] += row[k] * column[k * 4]; + } } tmp.type = m->type | n->type; memcpy(m, &tmp, sizeof tmp); |