Only compress a texture once if loaded in texture importer

Switch_FileFormatsMain/GUI/TextureUI/Importers/BNTX/BinaryTextureImporterList.cs

@@ -19,7 +19,6 @@ namespace FirstPlugin
         public STCompressionMode CompressionMode = STCompressionMode.Normal;
 
         public int SelectedIndex = -1;
-
         public bool ForceMipCount = false;
 
         public uint SelectedMipCount
@@ -35,6 +34,8 @@ namespace FirstPlugin
             }
         }
 
+        private bool IsLoaded = false;
+
         public BinaryTextureImporterList()
         {
             InitializeComponent();
@@ -97,6 +98,8 @@ namespace FirstPlugin
             tileModeCB.SelectedIndex = 0;
             formatComboBox.SelectedItem = SurfaceFormat.BC1_SRGB;
 
+                        IsLoaded = true;
+
             button1.Select();
         }
         TextureImporterSettings SelectedTexSettings;
@@ -162,24 +165,29 @@ namespace FirstPlugin
                 ToggleOkButton(false);
 
                 pictureBox1.Image = bitmap;
-                SelectedTexSettings.Compress(CompressionMode);
+
+                var mips = SelectedTexSettings.GenerateMipList(CompressionMode);
+                SelectedTexSettings.DataBlockOutput.Clear();
+                SelectedTexSettings.DataBlockOutput.Add(Utils.CombineByteArray(mips.ToArray()));
 
                 ToggleOkButton(true);
-                //    SelectedTexSettings.IsFinishedCompressing = true;
+                SelectedTexSettings.IsFinishedCompressing = true;
 
                 if (SelectedTexSettings.DataBlockOutput.Count > 0) {
                     if (SelectedTexSettings.Format == SurfaceFormat.BC5_SNORM)
                     {
-                        bitmap = DDSCompressor.DecompressBC5(SelectedTexSettings.DataBlockOutput[0],
+                        bitmap = DDSCompressor.DecompressBC5(mips[0],
                     (int)SelectedTexSettings.TexWidth, (int)SelectedTexSettings.TexHeight, true);
                     }
                     else
                     {
-                        bitmap = STGenericTexture.DecodeBlockGetBitmap(SelectedTexSettings.DataBlockOutput[0],
+                        bitmap = STGenericTexture.DecodeBlockGetBitmap(mips[0],
                         SelectedTexSettings.TexWidth, SelectedTexSettings.TexHeight, TextureData.ConvertFormat(SelectedTexSettings.Format));
                     }
                 }
 
+                mips.Clear();
+
                 if (pictureBox1.InvokeRequired)
                 {
                     pictureBox1.Invoke((MethodInvoker)delegate {
@@ -246,10 +254,15 @@ namespace FirstPlugin
 
         private void MipmapNum_ValueChanged(object sender, EventArgs e)
         {
+            if (!IsLoaded)
+                return;
+
             if (MipmapNum.Value > 0)
                 SelectedTexSettings.MipCount = (uint)MipmapNum.Value;
             else
                 SelectedTexSettings.MipCount = 1;
+
+            SetupSettings();
         }
 
         private void BinaryTextureImporterList_KeyDown(object sender, KeyEventArgs e)

Switch_FileFormatsMain/GUI/TextureUI/Importers/BNTX/TextureImporterSettings.cs

@@ -148,26 +148,41 @@ namespace FirstPlugin
 
         }
 
+
+        public List<byte[]> GenerateMipList(STCompressionMode CompressionMode, int SurfaceLevel = 0)
+        {
+            Bitmap Image = BitmapExtension.GetBitmap(DecompressedData[SurfaceLevel], (int)TexWidth, (int)TexHeight);
+
+            List<byte[]> mipmaps = new List<byte[]>();
+            for (int mipLevel = 0; mipLevel < MipCount; mipLevel++)
+            {
+                int MipWidth = Math.Max(1, (int)TexWidth >> mipLevel);
+                int MipHeight = Math.Max(1, (int)TexHeight >> mipLevel);
+
+                if (mipLevel != 0)
+                    Image = BitmapExtension.Resize(Image, MipWidth, MipHeight);
+
+                mipmaps.Add(STGenericTexture.CompressBlock(BitmapExtension.ImageToByte(Image),
+                    Image.Width, Image.Height, TextureData.ConvertFormat(Format), alphaRef, CompressionMode));
+            }
+            Image.Dispose();
+
+            return mipmaps;
+        }
+
         public byte[] GenerateMips(STCompressionMode CompressionMode, int SurfaceLevel = 0)
         {
             Bitmap Image = BitmapExtension.GetBitmap(DecompressedData[SurfaceLevel], (int)TexWidth, (int)TexHeight);
 
             List<byte[]> mipmaps = new List<byte[]>();
-            mipmaps.Add(STGenericTexture.CompressBlock(DecompressedData[SurfaceLevel],
-                (int)TexWidth, (int)TexHeight, TextureData.ConvertFormat(Format), alphaRef, CompressionMode));
-
-            //while (Image.Width / 2 > 0 && Image.Height / 2 > 0)
-            //      for (int mipLevel = 0; mipLevel < MipCount; mipLevel++)
             for (int mipLevel = 0; mipLevel < MipCount; mipLevel++)
             {
-                int width = Image.Width / 2;
-                int height = Image.Height / 2;
-                if (width <= 0)
-                    width = 1;
-                if (height <= 0)
-                    height = 1;
+                int MipWidth = Math.Max(1, (int)TexWidth >> mipLevel);
+                int MipHeight = Math.Max(1, (int)TexHeight >> mipLevel);
+
+                if (mipLevel != 0)
+                    Image = BitmapExtension.Resize(Image, MipWidth, MipHeight);
 
-                Image = BitmapExtension.Resize(Image, width, height);
                 mipmaps.Add(STGenericTexture.CompressBlock(BitmapExtension.ImageToByte(Image),
                     Image.Width, Image.Height, TextureData.ConvertFormat(Format), alphaRef, CompressionMode));
             }