Fixed Color node and added single color invert

Editor/Scripts/Editor/Data Types/ImageData.cs

@@ -1,3 +1,4 @@
+using System;
 using System.IO;
 using Unity.Collections;
 using UnityEngine;
@@ -5,6 +6,7 @@ using UnityEngine;
 /// <summary>
 /// A structure that holds image pixel data and its dimensions.
 /// </summary>
+[Serializable]
 public struct ImageData
 {
     /// <summary>

Editor/Scripts/Editor/Nodes/Types/Image/Adjustments/InvertChannel.cs

@@ -0,0 +1,52 @@
+using ImageProcessingGraph.Editor.Nodes.NodeAttributes;
+using Unity.Burst;
+using Unity.Collections;
+using Unity.Jobs;
+using UnityEngine;
+
+namespace ImageProcessingGraph.Editor.Nodes.Fun_Nodes.Texture
+{
+    [NodeInfoAttribute("Invert Channel", "Adjustments/InvertChannel", true)]
+    public class ChannelInvertNode : BaseImageNode
+    {
+        [NodeAttributes.Input("Input Channel")]
+        public SplitChannelData inputChannel;
+
+        [NodeAttributes.Output("Output Channel")]
+        public SplitChannelData outputChannel;
+
+        public override void Process()
+        {
+            NativeArray<byte> input = new NativeArray<byte>(inputChannel.ChannelData, Allocator.Persistent);
+            NativeArray<byte> output = new NativeArray<byte>(inputChannel.ChannelData.Length, Allocator.Persistent);
+
+            InvertChannelJob job = new InvertChannelJob
+            {
+                input = input,
+                output = output
+            };
+
+            job.Run();
+
+            byte[] outputArray = output.ToArray();
+
+            outputChannel = new SplitChannelData(outputArray, (inputChannel.Width, inputChannel.Height));
+        }
+    }
+
+    [BurstCompile]
+    public struct InvertChannelJob : IJob
+    {
+        [ReadOnly] public NativeArray<byte> input;
+        [WriteOnly] public NativeArray<byte> output;
+
+        public void Execute()
+        {
+            int length = input.Length;
+            for (int i = 0; i < length; i++)
+            {
+                output[i] = (byte)(255 - input[i]);
+            }
+        }
+    }
+}

Editor/Scripts/Editor/Nodes/Types/Image/Adjustments/InvertChannel.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 51378877ff184d868ef4c507dba15ef9
+timeCreated: 1745794420

Editor/Scripts/Editor/Nodes/Types/Image/Channels/RGBACombine.cs

@@ -1,4 +1,5 @@
 using ImageProcessingGraph.Editor.Nodes.NodeAttributes;
+using Unity.Burst;
 using Unity.Collections;
 using Unity.Jobs;
 using UnityEngine;
@@ -24,7 +25,9 @@ namespace ImageProcessingGraph.Editor.Nodes.Fun_Nodes.Texture
         public ImageData inputTexture;
 
         // Job struct for combining RGBA channels
+        [BurstCompile]
         struct RGBACombineJob : IJob
+
         {
             public NativeArray<byte> rData;
             public NativeArray<byte> gData;

Editor/Scripts/Editor/Nodes/Types/Image/Import/Texture2DImport.cs

@@ -34,6 +34,7 @@ namespace ImageProcessingGraph.Editor.Nodes.Import_Nodes
                 textureImporter.ReadTextureSettings(settings);
                 settings.readable = true;
                 textureImporter.SetTextureSettings(settings);
+                EditorUtility.SetDirty(textureImport);
                 textureImporter.SaveAndReimport();
                 
                 

Editor/Scripts/Editor/Nodes/Types/Image/Utilities/SingleChannelColor.cs

@@ -23,7 +23,7 @@ namespace ImageProcessingGraph.Editor.Nodes.Types.Image.Utilities
             {
                 int pixelCount = Width * Height;
     
-                NativeArray<byte> outputData = new NativeArray<byte>(pixelCount * 4, Allocator.Persistent);
+                NativeArray<byte> outputData = new NativeArray<byte>(pixelCount, Allocator.Persistent);
 
                 CreateSingleColorJob job = new CreateSingleColorJob
                 {
@@ -50,7 +50,7 @@ namespace ImageProcessingGraph.Editor.Nodes.Types.Image.Utilities
                 public void Execute()
                 {
                     // More efficient linear write pattern
-                    for (int i = 0; i < width*height*4; i++)
+                    for (int i = 0; i < width*height; i++)
                     {
                         outputData[i] = (byte)color32;
                     }