Add unit tests for pixel shader types

tests/ComputeSharp.Tests/PixelTypeTests.cs

@@ -0,0 +1,88 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace ComputeSharp.Tests;
+
+[TestClass]
+public partial class PixelTypeTests
+{
+    [TestMethod]
+    public unsafe void Bgra32_ToPixel()
+    {
+        Bgra32 color = new(0x20, 0x4A, 0x7C, 0xE4);
+
+        float4 pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel.R, delta: 0.0001f);
+        Assert.AreEqual(0.2901961f, pixel.G, delta: 0.0001f);
+        Assert.AreEqual(0.4862745f, pixel.B, delta: 0.0001f);
+        Assert.AreEqual(0.89411765f, pixel.A, delta: 0.0001f);
+    }
+
+    [TestMethod]
+    public unsafe void R16_ToPixel()
+    {
+        R16 color = new(0x2020);
+
+        float pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel, delta: 0.0001f);
+    }
+
+    [TestMethod]
+    public unsafe void R8_ToPixel()
+    {
+        R8 color = new(0x20);
+
+        float pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel, delta: 0.0001f);
+    }
+
+    [TestMethod]
+    public unsafe void Rg16_ToPixel()
+    {
+        Rg16 color = new(0x20, 0x4A);
+
+        float2 pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel.R, delta: 0.0001f);
+        Assert.AreEqual(0.2901961f, pixel.G, delta: 0.0001f);
+    }
+
+    [TestMethod]
+    public unsafe void Rg32_ToPixel()
+    {
+        Rg32 color = new(0x2020, 0x4A4A);
+
+        float2 pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel.R, delta: 0.0001f);
+        Assert.AreEqual(0.2901961f, pixel.G, delta: 0.0001f);
+    }
+
+    [TestMethod]
+    public unsafe void Rgba32_ToPixel()
+    {
+        Rgba32 color = new(0x20, 0x4A, 0x7C, 0xE4);
+
+        float4 pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel.R, delta: 0.0001f);
+        Assert.AreEqual(0.2901961f, pixel.G, delta: 0.0001f);
+        Assert.AreEqual(0.4862745f, pixel.B, delta: 0.0001f);
+        Assert.AreEqual(0.89411765f, pixel.A, delta: 0.0001f);
+    }
+
+    [TestMethod]
+    public unsafe void Rgba64_ToPixel()
+    {
+        Rgba64 color = new(0x2020, 0x4A4A, 0x7C7C, 0xE4E4);
+
+        float4 pixel = color.ToPixel();
+
+        Assert.AreEqual(0.1254902f, pixel.R, delta: 0.0001f);
+        Assert.AreEqual(0.2901961f, pixel.G, delta: 0.0001f);
+        Assert.AreEqual(0.4862745f, pixel.B, delta: 0.0001f);
+        Assert.AreEqual(0.89411765f, pixel.A, delta: 0.0001f);
+    }
+}