Initial work

Ryujinx.Graphics.Shader/TextureTarget.cs

@@ -0,0 +1,35 @@
+using System;
+
+namespace Ryujinx.Graphics.Shader
+{
+    [Flags]
+    public enum TextureTarget
+    {
+        Texture1D,
+        Texture2D,
+        Texture3D,
+        TextureCube,
+
+        Mask = 0xff,
+
+        Array       = 1 << 8,
+        Multisample = 1 << 9,
+        Shadow      = 1 << 10
+    }
+
+    static class TextureTargetExtensions
+    {
+        public static int GetDimensions(this TextureTarget type)
+        {
+            switch (type & TextureTarget.Mask)
+            {
+                case TextureTarget.Texture1D:   return 1;
+                case TextureTarget.Texture2D:   return 2;
+                case TextureTarget.Texture3D:   return 3;
+                case TextureTarget.TextureCube: return 3;
+            }
+
+            throw new ArgumentException($"Invalid texture type \"{type}\".");
+        }
+    }
+}