papermario/src/guOrtho.c
Ethan Roseman 4dce4c2839 misc
2020-10-18 22:55:52 -04:00

42 lines
1012 B
C

#include "common.h"
#ifdef NON_MATCHING
void guOrthoF(float mf[4][4], float l, float r, float b, float t,
float n, float f, float scale) {
s32 i, j;
guMtxIdentF(mf);
mf[0][0] = 2 / (r - l);
mf[1][1] = 2 / (t - b);
mf[2][2] = -2 / (f - n);
mf[3][0] = -(r + l) / (r - l);
mf[3][1] = -(t + b) / (t - b);
mf[3][2] = -(f + n) / (f - n);
mf[3][3] = 1;
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
mf[i][j] *= scale;
}
}
}
#else
INCLUDE_ASM(void, "guOrtho", guOrthoF, float mf[4][4], float l, float r, float b, float t, float n, float f,
float scale);
#endif
#ifdef NON_MATCHING
void guOrtho(Mtx* m, float l, float r, float b, float t,
float n, float f, float scale) {
float mf[4][4];
guOrthoF(mf, l, r, b, t, n, f, scale);
guMtxF2L(mf, m);
}
#else
INCLUDE_ASM(void, "guOrtho", guOrtho, Mtx* m, float l, float r, float b, float t,
float n, float f, float scale);
#endif