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Update Block8x8F.cs

pull/1554/head
James Jackson-South 5 years ago
parent
742aaad004
commit
7b97ccef1f
1 changed files with 35 additions and 78 deletions
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  1. 113
      src/ImageSharp/Formats/Jpeg/Components/Block8x8F.cs

113
src/ImageSharp/Formats/Jpeg/Components/Block8x8F.cs
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@ -555,102 +555,59 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components
private static void DivideRoundAll(ref Block8x8F a, ref Block8x8F b)
{
#if SUPPORTS_RUNTIME_INTRINSICS
// Avx version is written inline to avoid JIT bugs on MacOS.
if (Avx.IsSupported)
{
var vneg = new Vector<float>(-1F);
var vadd = new Vector<float>(.5F);
var vnegOne = Vector256.Create(-1f);
var vadd = Vector256.Create(.5F);
var vone = Vector256.Create(1f);
// V0
Vector<float> vs = Unsafe.As<Vector4, Vector<float>>(ref a.V0L);
Vector<float> voff
= Vector.Min(Vector.Max(vneg, vs), Vector<float>.One)
* vadd;
Vector256<float> v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V0L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V0L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs0 = Unsafe.As<Vector4, Vector256<float>>(ref a.V0L);
Vector256<float> voff0 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs0), vone), vadd);
Vector256<float> v0 = Avx.Divide(vs0, Unsafe.As<Vector4, Vector256<float>>(ref b.V0L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V0L) = Avx.Add(v0, voff0);
// V1
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V1L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V1L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V1L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs1 = Unsafe.As<Vector4, Vector256<float>>(ref a.V1L);
Vector256<float> voff1 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs1), vone), vadd);
Vector256<float> v1 = Avx.Divide(vs1, Unsafe.As<Vector4, Vector256<float>>(ref b.V1L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V1L) = Avx.Add(v1, voff1);
// V2
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V2L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V2L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V2L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs2 = Unsafe.As<Vector4, Vector256<float>>(ref a.V2L);
Vector256<float> voff2 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs2), vone), vadd);
Vector256<float> v2 = Avx.Divide(vs2, Unsafe.As<Vector4, Vector256<float>>(ref b.V2L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V2L) = Avx.Add(v2, voff2);
// V3
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V3L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V3L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V3L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs3 = Unsafe.As<Vector4, Vector256<float>>(ref a.V3L);
Vector256<float> voff3 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs3), vone), vadd);
Vector256<float> v3 = Avx.Divide(vs3, Unsafe.As<Vector4, Vector256<float>>(ref b.V3L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V3L) = Avx.Add(v3, voff3);
// V4
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V4L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V4L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V4L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs4 = Unsafe.As<Vector4, Vector256<float>>(ref a.V4L);
Vector256<float> voff4 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs4), vone), vadd);
Vector256<float> v4 = Avx.Divide(vs4, Unsafe.As<Vector4, Vector256<float>>(ref b.V4L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V4L) = Avx.Add(v4, voff4);
// V5
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V5L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V5L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V5L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs5 = Unsafe.As<Vector4, Vector256<float>>(ref a.V5L);
Vector256<float> voff5 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs5), vone), vadd);
Vector256<float> v5 = Avx.Divide(vs5, Unsafe.As<Vector4, Vector256<float>>(ref b.V5L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V5L) = Avx.Add(v5, voff5);
// V6
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V6L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V6L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V6L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs6 = Unsafe.As<Vector4, Vector256<float>>(ref a.V6L);
Vector256<float> voff6 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs6), vone), vadd);
Vector256<float> v6 = Avx.Divide(vs6, Unsafe.As<Vector4, Vector256<float>>(ref b.V6L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V6L) = Avx.Add(v6, voff6);
// V7
vs = Unsafe.As<Vector4, Vector<float>>(ref a.V7L);
voff = Vector.Min(Vector.Max(vneg, vs), Vector<float>.One) * vadd;
v = Avx.Divide(
Unsafe.As<Vector<float>, Vector256<float>>(ref vs),
Unsafe.As<Vector4, Vector256<float>>(ref b.V7L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V7L)
= Avx.Add(v, Unsafe.As<Vector<float>, Vector256<float>>(ref voff));
Vector256<float> vs7 = Unsafe.As<Vector4, Vector256<float>>(ref a.V7L);
Vector256<float> voff7 = Avx.Multiply(Avx.Min(Avx.Max(vnegOne, vs7), vone), vadd);
Vector256<float> v7 = Avx.Divide(vs7, Unsafe.As<Vector4, Vector256<float>>(ref b.V7L));
Unsafe.As<Vector4, Vector256<float>>(ref a.V7L) = Avx.Add(v7, voff7);
}
else
#endif

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