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Adding more tests to cover single pixel ColorBlending and AlphaComposition functions

af/merge-core
Vicente Penades 8 years ago
parent
8c4dbfa0db
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74aff0ea06
1 changed files with 57 additions and 1 deletions
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  1. 58
      tests/ImageSharp.Tests/PixelFormats/PixelOperationsTests.Blender.cs

58
tests/ImageSharp.Tests/PixelFormats/PixelOperationsTests.Blender.cs
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@ -34,7 +34,7 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats
{ new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.AddSrcOver), PixelColorBlendingMode.Add },
{ new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.SubtractSrcOver), PixelColorBlendingMode.Subtract },
{ new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.MultiplySrcOver), PixelColorBlendingMode.Multiply },
};
};
[Theory]
[MemberData(nameof(BlenderMappings))]
@ -43,6 +43,62 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats
{
PixelBlender<TPixel> blender = PixelOperations<TPixel>.Instance.GetPixelBlender(mode, PixelAlphaCompositionMode.SrcOver);
Assert.IsType(type, blender);
}
public static TheoryData<Rgba32, Rgba32, float, PixelColorBlendingMode, Rgba32> ColorBlendingExpectedResults = new TheoryData<Rgba32, Rgba32, float, PixelColorBlendingMode, Rgba32>()
{
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Normal, Rgba32.MidnightBlue },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Screen, new Rgba32(0xFFEEE7FF) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.HardLight, new Rgba32(0xFFC62D32) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Overlay, new Rgba32(0xFFDDCEFF) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Darken, new Rgba32(0xFF701919) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Lighten, new Rgba32(0xFFE1E4FF) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Add, new Rgba32(0xFFFFFDFF) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Subtract, new Rgba32(0xFF71CBE6) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelColorBlendingMode.Multiply, new Rgba32(0xFF631619) },
};
[Theory]
[MemberData(nameof(ColorBlendingExpectedResults))]
public void TestColorBlendingModes(Rgba32 backdrop, Rgba32 source, float opacity, PixelColorBlendingMode mode, Rgba32 expectedResult)
{
PixelBlender<Rgba32> blender = PixelOperations<Rgba32>.Instance.GetPixelBlender(mode, PixelAlphaCompositionMode.SrcOver);
Rgba32 actualResult = blender.Blend(backdrop, source, opacity);
// var str = actualResult.Rgba.ToString("X8"); // used to extract expectedResults
Assert.Equal(actualResult.ToVector4(), expectedResult.ToVector4());
}
public static TheoryData<Rgba32, Rgba32, float, PixelAlphaCompositionMode, Rgba32> AlphaCompositionExpectedResults = new TheoryData<Rgba32, Rgba32, float, PixelAlphaCompositionMode, Rgba32>()
{
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.Clear, new Rgba32(0) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.Xor, new Rgba32(0) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.Dest, Rgba32.MistyRose },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.DestAtop, Rgba32.MistyRose },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.DestIn, Rgba32.MistyRose },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.DestOut, new Rgba32(0) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.DestOver, Rgba32.MistyRose },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.Src, Rgba32.MidnightBlue },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.SrcAtop, Rgba32.MidnightBlue },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.SrcIn, Rgba32.MidnightBlue },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.SrcOut, new Rgba32(0) },
{ Rgba32.MistyRose, Rgba32.MidnightBlue, 1, PixelAlphaCompositionMode.SrcOver, Rgba32.MidnightBlue },
};
[Theory]
[MemberData(nameof(AlphaCompositionExpectedResults))]
public void TestAlphaCompositionModes(Rgba32 backdrop, Rgba32 source, float opacity, PixelAlphaCompositionMode mode, Rgba32 expectedResult)
{
PixelBlender<Rgba32> blender = PixelOperations<Rgba32>.Instance.GetPixelBlender(PixelColorBlendingMode.Normal, mode);
Rgba32 actualResult = blender.Blend(backdrop, source, opacity);
// var str = actualResult.Rgba.ToString("X8"); // used to extract expectedResults
Assert.Equal(actualResult.ToVector4(), expectedResult.ToVector4());
}
}
}

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