[d3d11] Add some documentation to d3d11_cmd.h

src/d3d11/d3d11_cmd.h

@@ -4,15 +4,36 @@
 
 namespace dxvk {
 
+  /**
+   * \brief D3D11 command type
+   * 
+   * Used to identify the type of command
+   * data most recently added to a CS chunk.
+   */
   enum class D3D11CmdType {
     DrawIndirect,
     DrawIndirectIndexed,
   };
 
+
+  /**
+   * \brief Command data header
+   * 
+   * Stores the command type. All command
+   * data structs must inherit this struct.
+   */
   struct D3D11CmdData {
     D3D11CmdType        type;
   };
 
+
+  /**
+   * \brief Indirect draw command data
+   * 
+   * Stores the offset into the draw buffer for
+   * the first draw, as well as the number of
+   * draws to execute.
+   */
   struct D3D11CmdDrawIndirectData : public D3D11CmdData {
     uint32_t            offset;
     uint32_t            count;