Add a SpirvReflection LoadFromJson test.

Author: mellinoe

src/Veldrid.SPIRV.Tests/SerializationTests.cs

@@ -0,0 +1,55 @@
+using System.IO;
+using System.Text;
+using Xunit;
+
+namespace Veldrid.SPIRV.Tests
+{
+    public class SerializationTests
+    {
+        [Fact]
+        public void SpirvReflection_DeserializeFromString()
+        {
+            const string SerializedJson =
+@"{
+  ""VertexElements"": [],
+  ""ResourceLayouts"": [
+    {
+      ""Elements"": [
+        {
+          ""Name"": ""vdspv_0_0"",
+          ""Kind"": ""TextureReadOnly"",
+          ""Stages"": ""Fragment"",
+          ""Options"": ""None""
+        },
+        {
+          ""Name"": ""vdspv_0_1"",
+          ""Kind"": ""Sampler"",
+          ""Stages"": ""Fragment"",
+          ""Options"": ""None""
+        }
+      ]
+    },
+    {
+      ""Elements"": [
+        {
+          ""Name"": ""vdspv_1_0"",
+          ""Kind"": ""UniformBuffer"",
+          ""Stages"": ""Fragment"",
+          ""Options"": ""None""
+        }
+      ]
+    }
+  ]
+}";
+            byte[] bytes = Encoding.UTF8.GetBytes(SerializedJson);
+            using (MemoryStream ms = new MemoryStream(bytes))
+            {
+                SpirvReflection refl = SpirvReflection.LoadFromJson(ms);
+                Assert.Empty(refl.VertexElements);
+                Assert.Equal(2, refl.ResourceLayouts.Length);
+                Assert.Equal(2, refl.ResourceLayouts[0].Elements.Length);
+                Assert.Single(refl.ResourceLayouts[1].Elements);
+            }
+        }
+    }
+}

src/Veldrid.SPIRV/SpirvReflection.cs

@@ -25,7 +25,14 @@ public class SpirvReflection
         /// </summary>
         public ResourceLayoutDescription[] ResourceLayouts { get; }
 
-        internal SpirvReflection(
+        /// <summary>
+        /// Constructs a new <see cref="SpirvReflection"/> instance.
+        /// </summary>
+        /// <param name="vertexElements">/// An array containing a description of each vertex element that is used by
+        /// the compiled shader set.</param>
+        /// <param name="resourceLayouts">An array containing a description of each set of resources used by the
+        /// compiled shader set.</param>
+        public SpirvReflection(
             VertexElementDescription[] vertexElements,
             ResourceLayoutDescription[] resourceLayouts)
         {