Add XML documentation to Ryujinx.Graphics.Gpu.State

Ryujinx.Graphics.Gpu/State/RtControl.cs

@@ -1,14 +1,26 @@
 namespace Ryujinx.Graphics.Gpu.State
 {
+    /// <summary>
+    /// Render target draw buffers control.
+    /// </summary>
     struct RtControl
     {
         public uint Packed;
 
+        /// <summary>
+        /// Unpacks the number of active draw buffers.
+        /// </summary>
+        /// <returns>Number of active draw buffers</returns>
         public int UnpackCount()
         {
             return (int)(Packed & 0xf);
         }
 
+        /// <summary>
+        /// Unpacks the color attachment index for a given draw buffer.
+        /// </summary>
+        /// <param name="index">Index of the draw buffer</param>
+        /// <returns>Attachment index</returns>
         public int UnpackPermutationIndex(int index)
         {
             return (int)((Packed >> (4 + index * 3)) & 7);