Implement Logical Operation registers and functionality (#1380)

* Implement Logical Operation registers and functionality.

* Address Feedback 1

Ryujinx.Graphics.Gpu/Engine/Methods.cs

@@ -252,6 +252,11 @@ namespace Ryujinx.Graphics.Gpu.Engine
                 UpdateBlendState(state);
             }
 
+            if (state.QueryModified(MethodOffset.LogicOpState))
+            {
+                UpdateLogicOpState(state);
+            }
+
             CommitBindings();
         }
 
@@ -875,6 +880,17 @@ namespace Ryujinx.Graphics.Gpu.Engine
             }
         }
 
+        /// <summary>
+        /// Updates host logical operation state, based on guest state.
+        /// </summary>
+        /// <param name="state">Current GPU state</param>
+        public void UpdateLogicOpState(GpuState state)
+        {
+            LogicalOpState logicOpState = state.Get<LogicalOpState>(MethodOffset.LogicOpState);
+
+            _context.Renderer.Pipeline.SetLogicOpState(logicOpState.Enable, logicOpState.LogicalOp);
+        }
+
         /// <summary>
         /// Storage buffer address and size information.
         /// </summary>

Ryujinx.Graphics.Gpu/State/LogicalOpState.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Graphics.GAL;
+
+namespace Ryujinx.Graphics.Gpu.State
+{
+    struct LogicalOpState
+    {
+#pragma warning disable CS0649
+        public Boolean32 Enable;
+        public LogicalOp LogicalOp;
+#pragma warning restore CS0649
+    }
+}

Ryujinx.Graphics.Gpu/State/MethodOffset.cs

@@ -92,6 +92,7 @@ namespace Ryujinx.Graphics.Gpu.State
         FaceState                       = 0x646,
         ViewportTransformEnable         = 0x64b,
         ViewVolumeClipControl           = 0x64f,
+        LogicOpState                    = 0x671,
         Clear                           = 0x674,
         RtColorMask                     = 0x680,
         ReportState                     = 0x6c0,