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99 lines
3.5 KiB
99 lines
3.5 KiB
// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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using System.Numerics;
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using System.Runtime.CompilerServices;
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using SixLabors.ImageSharp.PixelFormats;
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namespace SixLabors.ImageSharp.Tests.PixelFormats;
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[Trait("Category", "PixelFormats")]
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public class HalfVector4Tests
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{
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[Fact]
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public void HalfVector4_PackedValue()
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{
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Assert.Equal(0uL, new HalfVector4(Vector4.Zero).PackedValue);
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Assert.Equal(4323521613979991040uL, new HalfVector4(Vector4.One).PackedValue);
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Assert.Equal(13547034390470638592uL, new HalfVector4(-Vector4.One).PackedValue);
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Assert.Equal(15360uL, new HalfVector4(Vector4.UnitX).PackedValue);
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Assert.Equal(1006632960uL, new HalfVector4(Vector4.UnitY).PackedValue);
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Assert.Equal(65970697666560uL, new HalfVector4(Vector4.UnitZ).PackedValue);
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Assert.Equal(4323455642275676160uL, new HalfVector4(Vector4.UnitW).PackedValue);
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Assert.Equal(4035285078724390502uL, new HalfVector4(0.1f, 0.3f, 0.4f, 0.5f).PackedValue);
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}
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[Fact]
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public void HalfVector4_ToVector4()
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{
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Assert.Equal(Vector4.Zero, new HalfVector4(Vector4.Zero).ToVector4());
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Assert.Equal(Vector4.One, new HalfVector4(Vector4.One).ToVector4());
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Assert.Equal(-Vector4.One, new HalfVector4(-Vector4.One).ToVector4());
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Assert.Equal(Vector4.UnitX, new HalfVector4(Vector4.UnitX).ToVector4());
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Assert.Equal(Vector4.UnitY, new HalfVector4(Vector4.UnitY).ToVector4());
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Assert.Equal(Vector4.UnitZ, new HalfVector4(Vector4.UnitZ).ToVector4());
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Assert.Equal(Vector4.UnitW, new HalfVector4(Vector4.UnitW).ToVector4());
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}
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[Fact]
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public void HalfVector4_ToScaledVector4()
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{
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// arrange
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HalfVector4 pixel = new(-Vector4.One);
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// act
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Vector4 actual = pixel.ToScaledVector4();
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// assert
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Assert.Equal(0, actual.X);
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Assert.Equal(0, actual.Y);
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Assert.Equal(0, actual.Z);
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Assert.Equal(0, actual.W);
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}
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[Fact]
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public void HalfVector4_FromScaledVector4()
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{
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// arrange
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Vector4 scaled = new HalfVector4(-Vector4.One).ToScaledVector4();
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const ulong expected = 13547034390470638592uL;
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// act
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HalfVector4 pixel = HalfVector4.FromScaledVector4(scaled);
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ulong actual = pixel.PackedValue;
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// assert
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Assert.Equal(expected, actual);
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}
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[Fact]
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public void HalfVector4_FromBgra5551()
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{
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// arrange
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Vector4 expected = Vector4.One;
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// act
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HalfVector4 pixel = HalfVector4.FromBgra5551(new Bgra5551(1.0f, 1.0f, 1.0f, 1.0f));
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// assert
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Assert.Equal(expected, pixel.ToScaledVector4());
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}
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[Fact]
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public void HalfVector4_PixelInformation()
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{
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PixelTypeInfo info = HalfVector4.GetPixelTypeInfo();
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Assert.Equal(Unsafe.SizeOf<HalfVector4>() * 8, info.BitsPerPixel);
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Assert.Equal(PixelAlphaRepresentation.Unassociated, info.AlphaRepresentation);
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Assert.Equal(PixelColorType.RGB | PixelColorType.Alpha, info.ColorType);
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PixelComponentInfo componentInfo = info.ComponentInfo.Value;
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Assert.Equal(4, componentInfo.ComponentCount);
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Assert.Equal(0, componentInfo.Padding);
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Assert.Equal(16, componentInfo.GetComponentPrecision(0));
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Assert.Equal(16, componentInfo.GetComponentPrecision(1));
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Assert.Equal(16, componentInfo.GetComponentPrecision(2));
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Assert.Equal(16, componentInfo.GetComponentPrecision(3));
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Assert.Equal(16, componentInfo.GetMaximumComponentPrecision());
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}
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}
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