Fixed magic wand

src/PixiEditor.ChangeableDocument/Changes/Selection/MagicWand/MagicWandHelper.cs

@@ -1,5 +1,6 @@
 using System.Collections;
 using ChunkyImageLib.Operations;
+using Drawie.Backend.Core.Bridge;
 using PixiEditor.ChangeableDocument.Changeables.Interfaces;
 using PixiEditor.ChangeableDocument.Changes.Drawing.FloodFill;
 using Drawie.Backend.Core.ColorsImpl;
@@ -257,6 +258,7 @@ internal class MagicWandHelper
         VecI pos,
         ColorBounds bounds, Lines lines)
     {
+        using var ctx = DrawingBackendApi.Current.RenderingDispatcher.EnsureContext();
         if (!bounds.IsWithinBounds(referenceChunk.Surface.GetRawPixel(pos)))
         {
             return null;
@@ -264,7 +266,7 @@ internal class MagicWandHelper
 
         bool[] pixelVisitedStates = new bool[chunkSize * chunkSize];
 
-        using var refPixmap = referenceChunk.Surface.DrawingSurface.PeekPixels();
+        using var refPixmap = referenceChunk.Surface.PeekPixels();
         Half* refArray = (Half*)refPixmap.GetPixels();
 
         Stack<VecI> toVisit = new();