Use explicit buffer and texture bindings on shaders (#1666)

* Use explicit buffer and texture bindings on shaders

* More XML docs and other nits

Ryujinx.Graphics.Gpu/Memory/BufferBounds.cs

@@ -5,7 +5,25 @@ namespace Ryujinx.Graphics.Gpu.Memory
     /// </summary>
     struct BufferBounds
     {
-        public ulong Address;
-        public ulong Size;
+        /// <summary>
+        /// Region virtual address.
+        /// </summary>
+        public ulong Address { get; }
+
+        /// <summary>
+        /// Region size in bytes.
+        /// </summary>
+        public ulong Size { get; }
+
+        /// <summary>
+        /// Creates a new buffer region.
+        /// </summary>
+        /// <param name="address">Region address</param>
+        /// <param name="size">Region size</param>
+        public BufferBounds(ulong address, ulong size)
+        {
+            Address = address;
+            Size = size;
+        }
     }
 }