public void RunFldScenario()
{
var result = Avx.ConvertToVector256Int32WithTruncation(_fld);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_fld, _dataTable.outArrayPtr);
}
public void RunLclVarScenario_LoadAligned()
{
var firstOp = Avx.LoadAlignedVector256((Single *)(_dataTable.inArrayPtr));
var result = Avx.ConvertToVector256Int32WithTruncation(firstOp);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(firstOp, _dataTable.outArrayPtr);
}
public void RunLclFldScenario()
{
var test = new SimpleUnaryOpTest__ConvertToVector256Int32WithTruncationSingle();
var result = Avx.ConvertToVector256Int32WithTruncation(test._fld);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(test._fld, _dataTable.outArrayPtr);
}
public void RunLclVarScenario_UnsafeRead()
{
var firstOp = Unsafe.Read <Vector256 <Single> >(_dataTable.inArrayPtr);
var result = Avx.ConvertToVector256Int32WithTruncation(firstOp);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(firstOp, _dataTable.outArrayPtr);
}
public void RunBasicScenario_Load()
{
var result = Avx.ConvertToVector256Int32WithTruncation(
Avx.LoadVector256((Single *)(_dataTable.inArrayPtr))
);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.inArrayPtr, _dataTable.outArrayPtr);
}
public void RunBasicScenario_UnsafeRead()
{
var result = Avx.ConvertToVector256Int32WithTruncation(
Unsafe.Read <Vector256 <Single> >(_dataTable.inArrayPtr)
);
Unsafe.Write(_dataTable.outArrayPtr, result);
ValidateResult(_dataTable.inArrayPtr, _dataTable.outArrayPtr);
}
unsafe public static void ConvertFloat3A(byte *ipstart, byte *opstart, float *lutstart, int lutmax, int cb)
{
Debug.Assert(ipstart == opstart);
float *ip = (float *)ipstart, ipe = (float *)(ipstart + cb);
float *lp = lutstart;
#if HWINTRINSICS
if (Avx2.IsSupported)
{
var vgmsk = Avx.BroadcastVector128ToVector256((float *)Unsafe.AsPointer(ref MemoryMarshal.GetReference(HWIntrinsics.GatherMask3x)));
var vgmax = Vector256.Create((float)lutmax);
var vzero = Vector256 <float> .Zero;
var vfone = Vector256.Create(1f);
var vione = Vector256.Create(1);
ipe -= Vector256 <float> .Count;
while (ip <= ipe)
{
var vf = Avx.Max(vzero, Avx.LoadVector256(ip));
var va = Avx.Shuffle(vf, vf, HWIntrinsics.ShuffleMaskAlpha);
vf = Avx.Multiply(vf, Avx.Multiply(vgmax, Avx.Reciprocal(va)));
vf = Avx.Min(vf, vgmax);
var vi = Avx.ConvertToVector256Int32WithTruncation(vf);
var vfi = Avx.ConvertToVector256Single(vi);
var vl = Avx2.GatherMaskVector256(vfone, lp, vi, vgmsk, sizeof(float));
var vh = Avx2.GatherMaskVector256(vfone, lp, Avx2.Add(vi, vione), vgmsk, sizeof(float));
vf = HWIntrinsics.Lerp(vl, vh, Avx.Subtract(vf, vfi));
vf = Avx.Multiply(vf, va);
Avx.Store(ip, vf);
ip += Vector256 <float> .Count;
}
ipe += Vector256 <float> .Count;
}
#endif
{
var vlmax = new Vector4(lutmax);
var vzero = Vector4.Zero;
float famin = new Vector4(1 / 1024f).X;
while (ip < ipe)
{
var vf = Unsafe.ReadUnaligned <Vector4>(ip);
float f3 = vf.W;
if (f3 < famin)
{
Unsafe.WriteUnaligned(ip, vzero);
}
else
{
vf = (vf * vlmax / f3).Clamp(vzero, vlmax);
float f0 = vf.X;
float f1 = vf.Y;
float f2 = vf.Z;
uint i0 = (uint)f0;
uint i1 = (uint)f1;
uint i2 = (uint)f2;
ip[0] = Lerp(lp[i0], lp[i0 + 1], f0 - (int)i0) * f3;
ip[1] = Lerp(lp[i1], lp[i1 + 1], f1 - (int)i1) * f3;
ip[2] = Lerp(lp[i2], lp[i2 + 1], f2 - (int)i2) * f3;
}
ip += 4;
}
}
}
unsafe public static void ConvertFloat(byte *ipstart, byte *opstart, float *lutstart, int lutmax, int cb)
{
Debug.Assert(ipstart == opstart);
float *ip = (float *)ipstart, ipe = (float *)(ipstart + cb);
float *lp = lutstart;
#if HWINTRINSICS
if (Avx2.IsSupported)
{
var vlmax = Vector256.Create((float)lutmax);
var vzero = Vector256 <float> .Zero;
var vione = Vector256.Create(1);
ipe -= Vector256 <float> .Count;
while (ip <= ipe)
{
var vf = Avx.Multiply(vlmax, Avx.LoadVector256(ip));
vf = Avx.Min(Avx.Max(vzero, vf), vlmax);
var vi = Avx.ConvertToVector256Int32WithTruncation(vf);
var vp = Avx.ConvertToVector256Single(vi);
var vl = Avx2.GatherVector256(lp, vi, sizeof(float));
var vh = Avx2.GatherVector256(lp, Avx2.Add(vi, vione), sizeof(float));
vf = HWIntrinsics.Lerp(vl, vh, Avx.Subtract(vf, vp));
Avx.Store(ip, vf);
ip += Vector256 <float> .Count;
}
ipe += Vector256 <float> .Count;
float fmin = vzero.ToScalar(), flmax = vlmax.ToScalar();
while (ip < ipe)
{
float f = (*ip * flmax).Clamp(fmin, flmax);
uint i = (uint)f;
*ip++ = Lerp(lp[i], lp[i + 1], f - i);
}
}
else
#endif
{
var vlmax = new Vector4(lutmax);
var vzero = Vector4.Zero;
ipe -= 4;
while (ip <= ipe)
{
var vf = (Unsafe.ReadUnaligned <Vector4>(ip) * vlmax).Clamp(vzero, vlmax);
float f0 = vf.X;
float f1 = vf.Y;
float f2 = vf.Z;
float f3 = vf.W;
uint i0 = (uint)f0;
uint i1 = (uint)f1;
uint i2 = (uint)f2;
uint i3 = (uint)f3;
ip[0] = Lerp(lp[i0], lp[i0 + 1], f0 - (int)i0);
ip[1] = Lerp(lp[i1], lp[i1 + 1], f1 - (int)i1);
ip[2] = Lerp(lp[i2], lp[i2 + 1], f2 - (int)i2);
ip[3] = Lerp(lp[i3], lp[i3 + 1], f3 - (int)i3);
ip += 4;
}
ipe += 4;
float fmin = vzero.X, flmax = vlmax.X;
while (ip < ipe)
{
float f = (*ip * flmax).Clamp(fmin, flmax);
uint i = (uint)f;
*ip++ = Lerp(lp[i], lp[i + 1], f - i);
}
}
}