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Decompile mtx00016e98

This commit is contained in:
Ryan Dwyer 2021-11-06 14:07:46 +10:00
parent aa61bbfb01
commit 1f2e759fab
2 changed files with 46 additions and 106 deletions
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2
src/include/lib/mtx.h
View File

@ -52,7 +52,7 @@ void mtx00016ae4(Mtxf *matrix, f32 posx, f32 posy, f32 posz, f32 lookx, f32 look
void mtx00016b58(Mtxf *matrix, f32 posx, f32 posy, f32 posz, f32 lookx, f32 looky, f32 lookz, f32 upx, f32 upy, f32 upz);
void mtx00016d58(Mtxf *matrix, f32 posx, f32 posy, f32 posz, f32 lookx, f32 looky, f32 lookz, f32 upx, f32 upy, f32 upz);
u32 mtx00016dcc(f32 arg0, f32 arg1);
u32 mtx00016e98(void);
void mtx00016e98(f32 mtx[4][4], f32 angle, f32 x, f32 y, f32 z);
void mtx4Align(f32 mtx[4][4], f32 radians, f32 x, f32 y, f32 z);
void mtx4LoadRotationFrom(f32 src[4][4], f32 dst[4][4]);
void mtx000170e4(f32 src[4][4], f32 dst[4][4]);

150
src/lib/mtx.c
View File

@ -709,111 +709,51 @@ u32 mtx00016dcc(f32 arg0, f32 arg1)
return result;
}
GLOBAL_ASM(
glabel mtx00016e98
/* 16e98: 27bdffb8 */ addiu $sp,$sp,-72
/* 16e9c: afb00020 */ sw $s0,0x20($sp)
/* 16ea0: f7b40018 */ sdc1 $f20,0x18($sp)
/* 16ea4: 4485a000 */ mtc1 $a1,$f20
/* 16ea8: 00808025 */ or $s0,$a0,$zero
/* 16eac: afbf0024 */ sw $ra,0x24($sp)
/* 16eb0: afa60050 */ sw $a2,0x50($sp)
/* 16eb4: afa70054 */ sw $a3,0x54($sp)
/* 16eb8: 27a60058 */ addiu $a2,$sp,0x58
/* 16ebc: 27a40050 */ addiu $a0,$sp,0x50
/* 16ec0: 0c0011e4 */ jal guNormalize
/* 16ec4: 27a50054 */ addiu $a1,$sp,0x54
/* 16ec8: 0c0068f7 */ jal sinf
/* 16ecc: 4600a306 */ mov.s $f12,$f20
/* 16ed0: e7a00044 */ swc1 $f0,0x44($sp)
/* 16ed4: 0c0068f4 */ jal cosf
/* 16ed8: 4600a306 */ mov.s $f12,$f20
/* 16edc: c7a20050 */ lwc1 $f2,0x50($sp)
/* 16ee0: c7ae0058 */ lwc1 $f14,0x58($sp)
/* 16ee4: e7a00040 */ swc1 $f0,0x40($sp)
/* 16ee8: 46021102 */ mul.s $f4,$f2,$f2
/* 16eec: 00000000 */ nop
/* 16ef0: 460e7182 */ mul.s $f6,$f14,$f14
/* 16ef4: 0c012974 */ jal sqrtf
/* 16ef8: 46062300 */ add.s $f12,$f4,$f6
/* 16efc: 4480a000 */ mtc1 $zero,$f20
/* 16f00: c7a80050 */ lwc1 $f8,0x50($sp)
/* 16f04: c7aa0040 */ lwc1 $f10,0x40($sp)
/* 16f08: 46140032 */ c.eq.s $f0,$f20
/* 16f0c: c7a40044 */ lwc1 $f4,0x44($sp)
/* 16f10: 4501003e */ bc1t .L0001700c
/* 16f14: 00000000 */ nop
/* 16f18: 460a4302 */ mul.s $f12,$f8,$f10
/* 16f1c: 3c013f80 */ lui $at,0x3f80
/* 16f20: c7a60058 */ lwc1 $f6,0x58($sp)
/* 16f24: 46044382 */ mul.s $f14,$f8,$f4
/* 16f28: 44814000 */ mtc1 $at,$f8
/* 16f2c: 460a3402 */ mul.s $f16,$f6,$f10
/* 16f30: 00000000 */ nop
/* 16f34: 46043482 */ mul.s $f18,$f6,$f4
/* 16f38: c7a60054 */ lwc1 $f6,0x54($sp)
/* 16f3c: e7ae0030 */ swc1 $f14,0x30($sp)
/* 16f40: 460e3102 */ mul.s $f4,$f6,$f14
/* 16f44: e7b0002c */ swc1 $f16,0x2c($sp)
/* 16f48: 46008287 */ neg.s $f10,$f16
/* 16f4c: 46004083 */ div.s $f2,$f8,$f0
/* 16f50: 46045201 */ sub.s $f8,$f10,$f4
/* 16f54: 46024182 */ mul.s $f6,$f8,$f2
/* 16f58: e7a20038 */ swc1 $f2,0x38($sp)
/* 16f5c: e6060000 */ swc1 $f6,0x0($s0)
/* 16f60: c7aa0044 */ lwc1 $f10,0x44($sp)
/* 16f64: 46005102 */ mul.s $f4,$f10,$f0
/* 16f68: e6040010 */ swc1 $f4,0x10($s0)
/* 16f6c: c7a80054 */ lwc1 $f8,0x54($sp)
/* 16f70: e6140030 */ swc1 $f20,0x30($s0)
/* 16f74: 46124182 */ mul.s $f6,$f8,$f18
/* 16f78: 46066281 */ sub.s $f10,$f12,$f6
/* 16f7c: 46025102 */ mul.s $f4,$f10,$f2
/* 16f80: e6040020 */ swc1 $f4,0x20($s0)
/* 16f84: c7a80054 */ lwc1 $f8,0x54($sp)
/* 16f88: 460c4182 */ mul.s $f6,$f8,$f12
/* 16f8c: 46069281 */ sub.s $f10,$f18,$f6
/* 16f90: 46025102 */ mul.s $f4,$f10,$f2
/* 16f94: e6040004 */ swc1 $f4,0x4($s0)
/* 16f98: c7a80040 */ lwc1 $f8,0x40($sp)
/* 16f9c: 46004182 */ mul.s $f6,$f8,$f0
/* 16fa0: e6060014 */ swc1 $f6,0x14($s0)
/* 16fa4: c7aa0054 */ lwc1 $f10,0x54($sp)
/* 16fa8: c7a4002c */ lwc1 $f4,0x2c($sp)
/* 16fac: c7a60030 */ lwc1 $f6,0x30($sp)
/* 16fb0: 46045202 */ mul.s $f8,$f10,$f4
/* 16fb4: 46003287 */ neg.s $f10,$f6
/* 16fb8: c7a60038 */ lwc1 $f6,0x38($sp)
/* 16fbc: e6140034 */ swc1 $f20,0x34($s0)
/* 16fc0: 46085101 */ sub.s $f4,$f10,$f8
/* 16fc4: 46062282 */ mul.s $f10,$f4,$f6
/* 16fc8: e60a0024 */ swc1 $f10,0x24($s0)
/* 16fcc: c7a80050 */ lwc1 $f8,0x50($sp)
/* 16fd0: 46004107 */ neg.s $f4,$f8
/* 16fd4: e6040008 */ swc1 $f4,0x8($s0)
/* 16fd8: c7a60054 */ lwc1 $f6,0x54($sp)
/* 16fdc: 46003287 */ neg.s $f10,$f6
/* 16fe0: 44813000 */ mtc1 $at,$f6
/* 16fe4: e60a0018 */ swc1 $f10,0x18($s0)
/* 16fe8: c7a80058 */ lwc1 $f8,0x58($sp)
/* 16fec: e6140038 */ swc1 $f20,0x38($s0)
/* 16ff0: e614000c */ swc1 $f20,0xc($s0)
/* 16ff4: 46004107 */ neg.s $f4,$f8
/* 16ff8: e614001c */ swc1 $f20,0x1c($s0)
/* 16ffc: e6040028 */ swc1 $f4,0x28($s0)
/* 17000: e614002c */ swc1 $f20,0x2c($s0)
/* 17004: 10000003 */ b .L00017014
/* 17008: e606003c */ swc1 $f6,0x3c($s0)
.L0001700c:
/* 1700c: 0c00566c */ jal mtx4LoadIdentity
/* 17010: 02002025 */ or $a0,$s0,$zero
.L00017014:
/* 17014: 8fbf0024 */ lw $ra,0x24($sp)
/* 17018: d7b40018 */ ldc1 $f20,0x18($sp)
/* 1701c: 8fb00020 */ lw $s0,0x20($sp)
/* 17020: 03e00008 */ jr $ra
/* 17024: 27bd0048 */ addiu $sp,$sp,0x48
);
void mtx00016e98(f32 mtx[4][4], f32 angle, f32 x, f32 y, f32 z)
{
f32 sine;
f32 cosine;
f32 norm;
f32 invnorm;
f32 cos_x;
f32 sin_x;
f32 cos_z;
f32 sin_z;
guNormalize(&x, &y, &z);
sine = sinf(angle);
cosine = cosf(angle);
norm = sqrtf(x * x + z * z);
if (norm != 0) {
cos_x = x * cosine;
sin_x = x * sine;
cos_z = z * cosine;
sin_z = z * sine;
invnorm = 1 / norm;
mtx[0][0] = (-cos_z - y * sin_x) * invnorm;
mtx[1][0] = (sine * norm);
mtx[2][0] = (cos_x - y * sin_z) * invnorm;
mtx[3][0] = 0;
mtx[0][1] = (sin_z - y * cos_x) * invnorm;
mtx[1][1] = (cosine * norm);
mtx[2][1] = (-sin_x - y * cos_z) * invnorm;
mtx[3][1] = 0;
mtx[0][2] = -x;
mtx[1][2] = -y;
mtx[2][2] = -z;
mtx[3][2] = 0;
mtx[0][3] = 0;
mtx[1][3] = 0;
mtx[2][3] = 0;
mtx[3][3] = 1;
return;
}
mtx4LoadIdentity((Mtxf *)mtx);
}
void mtx4Align(f32 mtx[4][4], f32 angle, f32 x, f32 y, f32 z)
{