Update README.md to include project description, developer documentation links, and license information.

2026-06-11 04:03:07 +03:00
parent 31aba3aeee
commit ff2231a8ab
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+using MrGameEng.Graphics;
+using Xunit;
+
+namespace MrGameEng.Graphics.Tests;
+
+public class SortKeyTests
+{
+    [Fact]
+    public void LayerDominatesDepthAndTexture()
+    {
+        var lowLayer = SpriteSortKey.Make(0, 1000f, textureKey: 5);
+        var highLayer = SpriteSortKey.Make(1, -1000f, textureKey: 1);
+
+        Assert.True(lowLayer < highLayer);
+    }
+
+    [Fact]
+    public void DepthDominatesTexture_WithinLayer()
+    {
+        var behind = SpriteSortKey.Make(3, -5f, textureKey: 999);
+        var inFront = SpriteSortKey.Make(3, 5f, textureKey: 1);
+
+        Assert.True(behind < inFront);
+    }
+
+    [Theory]
+    [InlineData(-100f, -1f)]
+    [InlineData(-1f, 0f)]
+    [InlineData(0f, 1f)]
+    [InlineData(1f, 100f)]
+    [InlineData(-0.5f, 0.5f)]
+    public void DepthBits_PreserveFloatOrder(float smaller, float larger)
+    {
+        Assert.True(SpriteSortKey.DepthToSortableBits(smaller) < SpriteSortKey.DepthToSortableBits(larger));
+    }
+
+    [Fact]
+    public void EqualLayerAndDepth_GroupByTexture()
+    {
+        var a1 = SpriteSortKey.Make(2, 1f, textureKey: 7);
+        var b = SpriteSortKey.Make(2, 1f, textureKey: 9);
+        var a2 = SpriteSortKey.Make(2, 1f, textureKey: 7);
+
+        Assert.Equal(a1, a2);
+        Assert.NotEqual(a1, b);
+    }
+}