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Decompile mtx000170e4

This commit is contained in:
Ryan Dwyer 2021-11-06 14:03:41 +10:00
parent 54add2b574
commit aa61bbfb01
2 changed files with 27 additions and 50 deletions
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2
src/include/lib/mtx.h
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@ -55,7 +55,7 @@ u32 mtx00016dcc(f32 arg0, f32 arg1);
u32 mtx00016e98(void);
void mtx4Align(f32 mtx[4][4], f32 radians, f32 x, f32 y, f32 z);
void mtx4LoadRotationFrom(f32 src[4][4], f32 dst[4][4]);
u32 mtx000170e4(void);
void mtx000170e4(f32 src[4][4], f32 dst[4][4]);
void mtx0001719c(f32 arg0[4][4], f32 arg1[4][4]);
u32 mtx000172f0(void);
void mtx00017588(f32 arg0[4][4], f32 arg1[4][4]);

75
src/lib/mtx.c
View File

@ -863,55 +863,32 @@ void mtx4LoadRotationFrom(f32 src[4][4], f32 dst[4][4])
dst[3][3] = 1;
}
GLOBAL_ASM(
glabel mtx000170e4
/* 170e4: c48c0000 */ lwc1 $f12,0x0($a0)
/* 170e8: c48e0010 */ lwc1 $f14,0x10($a0)
/* 170ec: c4820020 */ lwc1 $f2,0x20($a0)
/* 170f0: 460c6102 */ mul.s $f4,$f12,$f12
/* 170f4: 3c013f80 */ lui $at,0x3f80
/* 170f8: 44818000 */ mtc1 $at,$f16
/* 170fc: 460e7182 */ mul.s $f6,$f14,$f14
/* 17100: 46062200 */ add.s $f8,$f4,$f6
/* 17104: 46021282 */ mul.s $f10,$f2,$f2
/* 17108: 44801000 */ mtc1 $zero,$f2
/* 1710c: 46085000 */ add.s $f0,$f10,$f8
/* 17110: 46008003 */ div.s $f0,$f16,$f0
/* 17114: 46006482 */ mul.s $f18,$f12,$f0
/* 17118: e4b20000 */ swc1 $f18,0x0($a1)
/* 1711c: c4840010 */ lwc1 $f4,0x10($a0)
/* 17120: 46002182 */ mul.s $f6,$f4,$f0
/* 17124: e4a60004 */ swc1 $f6,0x4($a1)
/* 17128: c48a0020 */ lwc1 $f10,0x20($a0)
/* 1712c: 46005202 */ mul.s $f8,$f10,$f0
/* 17130: e4a80008 */ swc1 $f8,0x8($a1)
/* 17134: c4920004 */ lwc1 $f18,0x4($a0)
/* 17138: 46009102 */ mul.s $f4,$f18,$f0
/* 1713c: e4a40010 */ swc1 $f4,0x10($a1)
/* 17140: c4860014 */ lwc1 $f6,0x14($a0)
/* 17144: 46003282 */ mul.s $f10,$f6,$f0
/* 17148: e4aa0014 */ swc1 $f10,0x14($a1)
/* 1714c: c4880024 */ lwc1 $f8,0x24($a0)
/* 17150: 46004482 */ mul.s $f18,$f8,$f0
/* 17154: e4b20018 */ swc1 $f18,0x18($a1)
/* 17158: c4840008 */ lwc1 $f4,0x8($a0)
/* 1715c: 46002182 */ mul.s $f6,$f4,$f0
/* 17160: e4a60020 */ swc1 $f6,0x20($a1)
/* 17164: c48a0018 */ lwc1 $f10,0x18($a0)
/* 17168: 46005202 */ mul.s $f8,$f10,$f0
/* 1716c: e4a80024 */ swc1 $f8,0x24($a1)
/* 17170: c4920028 */ lwc1 $f18,0x28($a0)
/* 17174: e4b0003c */ swc1 $f16,0x3c($a1)
/* 17178: e4a20030 */ swc1 $f2,0x30($a1)
/* 1717c: 46009102 */ mul.s $f4,$f18,$f0
/* 17180: e4a20034 */ swc1 $f2,0x34($a1)
/* 17184: e4a20038 */ swc1 $f2,0x38($a1)
/* 17188: e4a2000c */ swc1 $f2,0xc($a1)
/* 1718c: e4a2001c */ swc1 $f2,0x1c($a1)
/* 17190: e4a2002c */ swc1 $f2,0x2c($a1)
/* 17194: 03e00008 */ jr $ra
/* 17198: e4a40028 */ swc1 $f4,0x28($a1)
);
void mtx000170e4(f32 src[4][4], f32 dst[4][4])
{
f32 tmp = (src[0][0] * src[0][0] + src[1][0] * src[1][0] + src[2][0] * src[2][0]);
tmp = 1 / tmp;
dst[0][0] = src[0][0] * tmp;
dst[0][1] = src[1][0] * tmp;
dst[0][2] = src[2][0] * tmp;
dst[1][0] = src[0][1] * tmp;
dst[1][1] = src[1][1] * tmp;
dst[1][2] = src[2][1] * tmp;
dst[2][0] = src[0][2] * tmp;
dst[2][1] = src[1][2] * tmp;
dst[2][2] = src[2][2] * tmp;
dst[3][0] = 0;
dst[3][1] = 0;
dst[3][2] = 0;
dst[0][3] = 0;
dst[1][3] = 0;
dst[2][3] = 0;
dst[3][3] = 1;
}
void mtx0001719c(f32 arg0[4][4], f32 arg1[4][4])
{