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JPAGetDirMtx: fix codegen, break regalloc

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LagoLunatic
2024-07-15 17:02:00 -04:00
parent 0028a1b3b6
commit 23484e2799
1 changed files with 12 additions and 10 deletions
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src/JSystem/JParticle/JPAMath.cpp
+12 -10
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@@ -60,30 +60,32 @@ void JPAGetXYZRotateMtx(s16 x, s16 y, s16 z, Mtx dst) {
/* 80259A64-80259B6C .text JPAGetDirMtx__FRCQ29JGeometry8TVec3<f>PA4_f */
void JPAGetDirMtx(const JGeometry::TVec3<f32>& dir, Mtx dst) {
/* Nonmatching */
/* Nonmatching - regalloc */
JGeometry::TVec3<f32> perp;
perp.x = dir.y;
perp.y = -dir.x;
f32 z = dir.z;
perp.z = 0.0f;
f32 mag = perp.squared();
mag *= JGeometry::TUtil<f32>::inv_sqrt(mag);
f32 mag = perp.length();
if (mag <= JGeometry::TUtil<f32>::epsilon()) {
perp.x = perp.y = 0.0f;
perp.zero();
} else {
perp.x *= (1.0f / mag);
perp.y *= (1.0f / mag);
perp.scale(1.0f / mag);
}
f32 x = perp.x, y = perp.y;
dst[0][0] = x*x + z * (1.0f - x*x);
dst[0][1] = (1.0f - z) * (x * y);
f32 xx = x*x;
f32 yy = y*y;
f32 xy = x*y;
dst[0][0] = xx + z * (1.0f - xx);
dst[0][1] = xy * (1.0f - z);
dst[0][2] = -y * mag;
dst[0][3] = 0.0f;
dst[1][0] = (1.0f - z) * (x * y);
dst[1][1] = y*y + z * (1.0f - y*y);
dst[1][0] = xy * (1.0f - z);
dst[1][1] = yy + z * (1.0f - yy);
dst[1][2] = x*mag;
dst[1][3] = 0.0f;