Optimizing the material, shape and signal type manager

(let's not destroy a Dictionary every cycle)

Author: Sharpe49

Source/RunActivity/Viewer3D/Materials.cs

@@ -37,7 +37,7 @@ public class SharedTextureManager
         readonly Viewer Viewer;
         readonly GraphicsDevice GraphicsDevice;
         Dictionary<string, Texture2D> Textures = new Dictionary<string, Texture2D>();
-        Dictionary<string, bool> TextureMarks;
+        Dictionary<string, bool> TextureMarks = new Dictionary<string, bool>();
 
         [CallOnThread("Render")]
         internal SharedTextureManager(Viewer viewer, GraphicsDevice graphicsDevice)
@@ -198,7 +198,7 @@ public static Texture2D Get(GraphicsDevice graphicsDevice, string path)
 
         public void Mark()
         {
-            TextureMarks = new Dictionary<string, bool>(Textures.Count);
+            TextureMarks.Clear();
             foreach (var path in Textures.Keys)
                 TextureMarks.Add(path, false);
         }

Source/RunActivity/Viewer3D/Shapes.cs

@@ -51,7 +51,7 @@ public class SharedShapeManager
         readonly Viewer Viewer;
 
         Dictionary<string, SharedShape> Shapes = new Dictionary<string, SharedShape>();
-        Dictionary<string, bool> ShapeMarks;
+        Dictionary<string, bool> ShapeMarks = new Dictionary<string, bool>();
         SharedShape EmptyShape;
 
         [CallOnThread("Render")]
@@ -87,7 +87,7 @@ public SharedShape Get(string path)
 
         public void Mark()
         {
-            ShapeMarks = new Dictionary<string, bool>(Shapes.Count);
+            ShapeMarks.Clear();
             foreach (var path in Shapes.Keys)
                 ShapeMarks.Add(path, false);
         }

Source/RunActivity/Viewer3D/Signals.cs

@@ -418,7 +418,7 @@ public class SignalTypeDataManager
         readonly Viewer Viewer;
 
         Dictionary<string, SignalTypeData> SignalTypes = new Dictionary<string, SignalTypeData>();
-        Dictionary<string, bool> SignalTypesMarks;
+        Dictionary<string, bool> SignalTypesMarks = new Dictionary<string, bool>();
 
         public SignalTypeDataManager(Viewer viewer)
         {
@@ -437,7 +437,7 @@ public SignalTypeData Get(SignalType mstsSignalType)
 
         public void Mark()
         {
-            SignalTypesMarks = new Dictionary<string, bool>(SignalTypes.Count);
+            SignalTypesMarks.Clear();
             foreach (string signalTypeName in SignalTypes.Keys)
             {
                 SignalTypesMarks.Add(signalTypeName, false);