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optimized draw data calculations using VU0

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This commit is contained in:
Sandro Sobczyński
2020-11-04 16:03:30 +01:00
parent 4d53c6c5fe
commit aa6b2d314b
2 changed files with 147 additions and 52 deletions
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src/engine/models/math/vector3.cpp
+7 -19
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@@ -105,25 +105,13 @@ Vector3 Vector3::operator-(void)
Vector3 Vector3::operator*(Vector3 &v)
{
Vector3 res;
asm volatile( // VU0 Macro program
"lqc2 vf4, 0x0(%1) \n\t" // vf4 = this
"lqc2 vf5, 0x0(%2) \n\t" // vf5 = v
"vmulz.y vf6, vf4, vf5 \n\t" // vf6.y = vf4.y * vf5.z
"vmuly.z vf6, vf4, vf5 \n\t"
"vsubz.y vf6, vf6, vf6 \n\t" // vf6.y = vf4.y - vf4.z
"vaddy.x vf8, vf0, vf6 \n\t" // res.x = vf4.y * vf5.z - vf4.z * vf5.y
"vmulx.z vf6, vf4, vf5 \n\t"
"vmulz.x vf6, vf4, vf5 \n\t"
"vsubx.z vf6, vf6, vf6 \n\t"
"vaddz.y vf8, vf0, vf6 \n\t" // res.y = vf4.z * vf5.x - vf4.x * vf5.z
"vmuly.x vf6, vf4, vf5 \n\t"
"vmulx.y vf6, vf4, vf5 \n\t"
"vsuby.x vf6, vf6, vf6 \n\t"
"vaddx.z vf8, vf0, vf6 \n\t" // res.z = vf4.x * vf5.y - vf4.y * vf5.x
"sqc2 vf8, 0x0(%0) \n\t"
asm volatile( // VU0 Macro program
"lqc2 vf4, 0x0(%1) \n\t" // vf4 = this
"lqc2 vf5, 0x0(%2) \n\t" // vf5 = v
"vopmula.xyz ACC, vf4, vf5 \n\t"
"vopmsub.xyz vf8, vf5, vf4 \n\t"
"vsub.w vf8, vf00, vf00 \n\t"
"sqc2 vf8, 0x0(%0) \n\t" // vf8 = res
:
: "r"(res.xyz), "r"(this->xyz), "r"(v.xyz));
// result.x = y * v.z - z * v.y;