* Transposes a 4x4 matrix. * * @param m the matrix to transpose */
| 372 | * @param m the matrix to transpose |
| 373 | */ |
| 374 | static void |
| 375 | transpose(GLfloat *m) |
| 376 | { |
| 377 | GLfloat t[16] = { |
| 378 | m[0], m[4], m[8], m[12], |
| 379 | m[1], m[5], m[9], m[13], |
| 380 | m[2], m[6], m[10], m[14], |
| 381 | m[3], m[7], m[11], m[15]}; |
| 382 | |
| 383 | memcpy(m, t, sizeof(t)); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Inverts a 4x4 matrix. |