Fix CPlugMaterial

Src/GBX.NET/Engines/Plug/CPlugMaterial.cs

@@ -4,7 +4,7 @@ public partial class CPlugMaterial
 {
     private CPlug? shader;
     [AppliedWithChunk<Chunk0907900D>]
-    public CPlug? Shader { get => shaderFile?.GetNode(ref shader) ?? shader; set => shader = value; }
+    public CPlug? Shader { get => shaderFile?.GetNode(ref shader) ?? shader; set => shader = value; } // probably m_Material
     private Components.GbxRefTableFile? shaderFile;
     public Components.GbxRefTableFile? ShaderFile { get => shaderFile; set => shaderFile = value; }
     public CPlug? GetShader(GbxReadSettings settings = default, bool exceptions = false) => shaderFile?.GetNode(ref shader, settings, exceptions) ?? shader;
@@ -21,7 +21,7 @@ public override void ReadWrite(CPlugMaterial n, GbxReaderWriter rw)
         {
             rw.NodeRef(ref n.shader, ref n.shaderFile);
 
-            if (n.shader is not null && n.shaderFile is not null)
+            if (n.shader is not null || n.shaderFile is not null)
             {
                 return;
             }

Src/GBX.NET/Engines/Plug/CPlugMaterialCustom.chunkl

@@ -1,2 +1,36 @@
 CPlugMaterialCustom 0x0903A000
-- inherits: CPlug
+- inherits: CPlug
+
+0x004
+ int[]
+
+0x006
+ Bitmap[] Textures
+
+0x00A
+ GpuFx[] GpuFxs1
+ GpuFx[] GpuFxs2
+
+0x00C
+ BitmapSkip[] SkipSamplers
+
+0x00D
+ ulong U01
+ ulong U02
+ if (U01 & 1) != 0 // SPlugVisibleFilter
+  short U03
+  short U04
+
+archive Bitmap
+ id
+ int
+ int
+ v1+
+  int
+  int
+
+archive GpuFx
+
+archive BitmapSkip
+ id Name
+ bool

Src/GBX.NET/Engines/Plug/CPlugMaterialCustom.cs

@@ -0,0 +1,49 @@
+namespace GBX.NET.Engines.Plug;
+
+public partial class CPlugMaterialCustom
+{
+    [ChunkGenerationOptions(StructureKind = StructureKind.SeparateReadAndWrite)]
+    public partial class Chunk0903A00A;
+
+    [ArchiveGenerationOptions(StructureKind = StructureKind.SeparateReadAndWrite)]
+    public partial class GpuFx
+    {
+        public string U01 { get; set; } = "";
+        public bool U02 { get; set; }
+        public float[][] U03 { get; set; } = [];
+
+        public void Read(GbxReader r, int v = 0)
+        {
+            U01 = r.ReadId();
+            var count1 = r.ReadInt32();
+            var count2 = r.ReadInt32();
+            U02 = r.ReadBoolean();
+
+            U03 = new float[count2][];
+
+            for (var i = 0; i < count2; i++)
+            {
+                U03[i] = r.ReadArray<float>(count1);
+            }
+        }
+
+        public void Write(GbxWriter w, int v = 0)
+        {
+            var count2 = U03.Length;
+            var count1 = U03.Length > 0 ? U03[0].Length : 0;
+
+            w.WriteIdAsString(U01);
+            w.Write(count1);
+            w.Write(count2);
+            w.Write(U02);
+
+            for (var i = 0; i < count2; i++)
+            {
+                for (var j = 0; j < count1; j++)
+                {
+                    w.Write(U03[i][j]);
+                }
+            }
+        }
+    }
+}