mirror of
https://github.com/HarbourMasters/Starship
synced 2026-08-13 20:44:45 -04:00
Sonic Dreamcaster
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/**************************************************************************
|
|
* *
|
|
* Copyright (C) 1994, Silicon Graphics, Inc. *
|
|
* *
|
|
* These coded instructions, statements, and computer programs contain *
|
|
* unpublished proprietary information of Silicon Graphics, Inc., and *
|
|
* are protected by Federal copyright law. They may not be disclosed *
|
|
* to third parties or copied or duplicated in any form, in whole or *
|
|
* in part, without the prior written consent of Silicon Graphics, Inc. *
|
|
* *
|
|
**************************************************************************/
|
|
|
|
#include <libultraship.h>
|
|
|
|
#ifdef GBI_FLOATS
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#ifndef GBI_FLOATS
|
|
void guMtxF2L(float mf[4][4], Mtx* m) {
|
|
int r, c;
|
|
s32 tmp1;
|
|
s32 tmp2;
|
|
s32* m1 = &m->m[0][0];
|
|
s32* m2 = &m->m[2][0];
|
|
for (r = 0; r < 4; r++) {
|
|
for (c = 0; c < 2; c++) {
|
|
tmp1 = mf[r][2 * c] * 65536.0f;
|
|
tmp2 = mf[r][2 * c + 1] * 65536.0f;
|
|
*m1++ = (tmp1 & 0xffff0000) | ((tmp2 >> 0x10) & 0xffff);
|
|
*m2++ = ((tmp1 << 0x10) & 0xffff0000) | (tmp2 & 0xffff);
|
|
}
|
|
}
|
|
}
|
|
|
|
void guMtxL2F(float mf[4][4], Mtx* m) {
|
|
int r, c;
|
|
u32 tmp1;
|
|
u32 tmp2;
|
|
u32* m1;
|
|
u32* m2;
|
|
s32 stmp1, stmp2;
|
|
m1 = (u32*) &m->m[0][0];
|
|
m2 = (u32*) &m->m[2][0];
|
|
for (r = 0; r < 4; r++) {
|
|
for (c = 0; c < 2; c++) {
|
|
tmp1 = (*m1 & 0xffff0000) | ((*m2 >> 0x10) & 0xffff);
|
|
tmp2 = ((*m1++ << 0x10) & 0xffff0000) | (*m2++ & 0xffff);
|
|
stmp1 = *(s32*) &tmp1;
|
|
stmp2 = *(s32*) &tmp2;
|
|
mf[r][c * 2 + 0] = stmp1 / 65536.0f;
|
|
mf[r][c * 2 + 1] = stmp2 / 65536.0f;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
void guMtxF2L(float mf[4][4], Mtx* m) {
|
|
memcpy(m, mf, sizeof(Mtx));
|
|
}
|
|
#endif
|
|
|
|
void guMtxIdentF(float mf[4][4]) {
|
|
int r, c;
|
|
for (r = 0; r < 4; r++) {
|
|
for (c = 0; c < 4; c++) {
|
|
if (r == c) {
|
|
mf[r][c] = 1.0f;
|
|
} else {
|
|
mf[r][c] = 0.0f;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void guMtxIdent(Mtx* m) {
|
|
#ifndef GBI_FLOATS
|
|
float mf[4][4];
|
|
guMtxIdentF(mf);
|
|
guMtxF2L(mf, m);
|
|
#else
|
|
guMtxIdentF(m->mf);
|
|
#endif
|
|
}
|