Separate GPU engines (part 2/2) (#2440)

* 3D engine now uses DeviceState too, plus new state modification tracking

* Remove old methods code

* Remove GpuState and friends

* Optimize DeviceState, force inline some functions

* This change was not supposed to go in

* Proper channel initialization

* Optimize state read/write methods even more

* Fix debug build

* Do not dirty state if the write is redundant

* The YControl register should dirty either the viewport or front face state too, to update the host origin

* Avoid redundant vertex buffer updates

* Move state and get rid of the Ryujinx.Graphics.Gpu.State namespace

* Comments and nits

* Fix rebase

* PR feedback

* Move changed = false to improve codegen

* PR feedback

* Carry RyuJIT a bit more

Ryujinx.Graphics.Gpu/GpuChannel.cs

@@ -64,6 +64,17 @@ namespace Ryujinx.Graphics.Gpu
             memoryManager.Physical.BufferCache.NotifyBuffersModified += BufferManager.Rebind;
         }
 
+        /// <summary>
+        /// Writes data directly to the state of the specified class.
+        /// </summary>
+        /// <param name="classId">ID of the class to write the data into</param>
+        /// <param name="offset">State offset in bytes</param>
+        /// <param name="value">Value to be written</param>
+        public void Write(ClassId classId, int offset, uint value)
+        {
+            _processor.Write(classId, offset, (int)value);
+        }
+
         /// <summary>
         /// Push a GPFIFO entry in the form of a prefetched command buffer.
         /// It is intended to be used by nvservices to handle special cases.