Initial work

Ryujinx.Graphics.GAL/DepthStencil/DepthTestDescriptor.cs

@@ -0,0 +1,20 @@
+namespace Ryujinx.Graphics.GAL.DepthStencil
+{
+    public struct DepthTestDescriptor
+    {
+        public bool TestEnable  { get; }
+        public bool WriteEnable { get; }
+
+        public CompareOp Func { get; }
+
+        public DepthTestDescriptor(
+            bool      testEnable,
+            bool      writeEnable,
+            CompareOp func)
+        {
+            TestEnable  = testEnable;
+            WriteEnable = writeEnable;
+            Func        = func;
+        }
+    }
+}