From 20f4699b83af2743e2893e1f91cbbaf37016f72c Mon Sep 17 00:00:00 2001
From: CallumDev <callum.mcging@gmail.com>
Date: Mon, 17 Dec 2018 04:15:35 +1030
Subject: [PATCH] Editor: Texture Import allow flipping textures

---
 src/Editor/LancerEdit/TextureImport.cs | 15 +++++++++------
 src/Editor/LancerEdit/UtfTab.Popups.cs |  8 +++++---
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/src/Editor/LancerEdit/TextureImport.cs b/src/Editor/LancerEdit/TextureImport.cs
index 18cdf589..5a2e0af0 100644
--- a/src/Editor/LancerEdit/TextureImport.cs
+++ b/src/Editor/LancerEdit/TextureImport.cs
@@ -50,31 +50,33 @@ public static void LoadLibraries()
             }
         }
 
-        static List<TeximpNet.Surface> GenerateMipmapsRGBA(string input, MipmapMethod mipm)
+        static List<TeximpNet.Surface> GenerateMipmapsRGBA(string input, MipmapMethod mipm, bool flip)
         {
             List<TeximpNet.Surface> mips = new List<TeximpNet.Surface>();
             var surface = TeximpNet.Surface.LoadFromFile(input);
+            if (flip) surface.FlipVertically();
             surface.ConvertTo(TeximpNet.ImageConversion.To32Bits);
             surface.GenerateMipMaps(mips, (TeximpNet.ImageFilter)mipm);
             return mips;
         }
 
-        public static byte[] TGANoMipmap(string input)
+        public static byte[] TGANoMipmap(string input, bool flip)
         {
             LoadLibraries();
             using(var stream = new MemoryStream()) {
                 using(var surface = TeximpNet.Surface.LoadFromFile(input)) {
+                    if (flip) surface.FlipVertically();
                     surface.ConvertTo(TeximpNet.ImageConversion.To32Bits);
                     surface.SaveToStream(TeximpNet.ImageFormat.TARGA, stream);
                 }
                 return stream.ToArray();
             }
         }
-        public static unsafe List<LUtfNode> TGAMipmaps(string input, MipmapMethod mipm)
+        public static unsafe List<LUtfNode> TGAMipmaps(string input, MipmapMethod mipm, bool flip)
         {
             LoadLibraries();
             var nodes = new List<LUtfNode>();
-            var mips = GenerateMipmapsRGBA(input, mipm);
+            var mips = GenerateMipmapsRGBA(input, mipm, flip);
             for (int i = 0; i < mips.Count; i++) {
                 using(var stream = new MemoryStream()) {
                     mips[i].SaveToStream(TeximpNet.ImageFormat.TARGA, stream);
@@ -85,7 +87,7 @@ public static unsafe List<LUtfNode> TGAMipmaps(string input, MipmapMethod mipm)
             }
             return nodes;
         }
-        public static byte[] CreateDDS(string input, DDSFormat format, MipmapMethod mipm, bool slow)
+        public static byte[] CreateDDS(string input, DDSFormat format, MipmapMethod mipm, bool slow, bool flip)
         {
             LoadLibraries();
             using (var stream = new MemoryStream())
@@ -98,10 +100,11 @@ public static byte[] CreateDDS(string input, DDSFormat format, MipmapMethod mipm
                     {
                         using (var surface = TeximpNet.Surface.LoadFromFile(input))
                         {
+                            if (flip) surface.FlipVertically();
                             compress.Input.SetData(surface);
                         }
                     } else {
-                        var mips = GenerateMipmapsRGBA(input, mipm);
+                        var mips = GenerateMipmapsRGBA(input, mipm, flip);
                         compress.Input.SetTextureLayout(TextureType.Texture2D, mips[0].Width, mips[0].Height);
 
                         for (int i = 0; i < mips.Count; i++) {
diff --git a/src/Editor/LancerEdit/UtfTab.Popups.cs b/src/Editor/LancerEdit/UtfTab.Popups.cs
index f85eb333..9d909793 100644
--- a/src/Editor/LancerEdit/UtfTab.Popups.cs
+++ b/src/Editor/LancerEdit/UtfTab.Popups.cs
@@ -47,6 +47,7 @@ void RegisterPopups()
         };
         int mipmapOption = 6;
         bool compressSlow = false;
+        bool texFlip = false;
         void TexImportDialog(PopupData data)
         {
             if (teximportprev == null)
@@ -78,6 +79,7 @@ void TexImportDialog(PopupData data)
                 ImGui.Text(string.Format("Dimensions: {0}x{1}", teximportprev.Width, teximportprev.Height));
                 ImGui.Combo("Format", ref compressOption, texOptions, texOptions.Length);
                 ImGui.Combo("Mipmaps", ref mipmapOption, mipmapOptions, mipmapOptions.Length);
+                ImGui.Checkbox("Flip Vertically", ref texFlip);
                 ImGui.Checkbox("High Quality (slow)", ref compressSlow);
                 if (ImGui.Button("Import"))
                 {
@@ -125,11 +127,11 @@ void TexImportDialog(PopupData data)
                                 break;
                         }
                         if (mipm == MipmapMethod.None && format == DDSFormat.Uncompressed)
-                            texImportData = TextureImport.TGANoMipmap(teximportpath);
+                            texImportData = TextureImport.TGANoMipmap(teximportpath, texFlip);
                         else if (format == DDSFormat.Uncompressed)
-                            texImportChildren = TextureImport.TGAMipmaps(teximportpath, mipm);
+                            texImportChildren = TextureImport.TGAMipmaps(teximportpath, mipm, texFlip);
                         else
-                            texImportData = TextureImport.CreateDDS(teximportpath, format, mipm, compressSlow);
+                            texImportData = TextureImport.CreateDDS(teximportpath, format, mipm, compressSlow, texFlip);
                         texImportWaiting = false;
                     }).Start();
                 }