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/ClassId.cs

@@ -3,13 +3,13 @@ namespace Ryujinx.Graphics.Gpu
     /// <summary>
     /// GPU engine class ID.
     /// </summary>
-    enum ClassId
+    public enum ClassId
     {
-        Engine2D            = 0x902d,
-        Engine3D            = 0xb197,
-        EngineCompute       = 0xb1c0,
-        EngineInline2Memory = 0xa140,
-        EngineDma           = 0xb0b5,
-        EngineGpfifo        = 0xb06f
+        Twod = 0x902d,
+        Threed = 0xb197,
+        Compute = 0xb1c0,
+        InlineToMemory = 0xa140,
+        Dma = 0xb0b5,
+        GPFifo = 0xb06f
     }
 }