Add XML documentation to Ryujinx.Graphics.Gpu.State

Ryujinx.Graphics.Gpu/State/VertexBufferState.cs

@@ -1,16 +1,27 @@
 namespace Ryujinx.Graphics.Gpu.State
 {
+    /// <summary>
+    /// Vertex buffer state.
+    /// </summary>
     struct VertexBufferState
     {
         public uint  Control;
         public GpuVa Address;
         public int   Divisor;
 
+        /// <summary>
+        /// Vertex buffer stride, defined as the number of bytes occupied by each vertex in memory.
+        /// </summary>
+        /// <returns>Vertex buffer stride</returns>
         public int UnpackStride()
         {
             return (int)(Control & 0xfff);
         }
 
+        /// <summary>
+        /// Vertex buffer enable.
+        /// </summary>
+        /// <returns>True if the vertex buffer is enabled, false otherwise</returns>
         public bool UnpackEnable()
         {
             return (Control & (1 << 12)) != 0;