Add R8G8B8A8_UNORM textures for XB1 DE

Author: BlockBuilder57

XbTool/XbTool/Common/Textures/Decode.cs

@@ -57,6 +57,10 @@ public static byte[] DecodeTexture(this ITexture texture)
                     Swizzle.Deswizzle(texture, 4);
                     decoded = Dxt.DecompressBc7(texture);
                     break;
+                case TextureFormat.R8G8B8A8_UNORM:
+                    Swizzle.Deswizzle(texture, 4, 1);
+                    decoded = texture.Data;
+                    break;
             }
 
             return decoded;

XbTool/XbTool/Common/Textures/TextureFormat.cs

@@ -7,6 +7,7 @@ public enum TextureFormat
         BC3 = 0x44,
         BC4 = 0x49,
         BC7 = 0x4D,
-        BC6H_UF16 = 0x50
+        BC6H_UF16 = 0x50,
+        R8G8B8A8_UNORM = 0x25
     }
 }

XbTool/XbTool/Xb2/Textures/Swizzle.cs

@@ -5,13 +5,13 @@ namespace XbTool.Xb2.Textures
 {
     public static class Swizzle
     {
-        public static void Deswizzle(ITexture texture, int bppPower)
+        public static void Deswizzle(ITexture texture, int bppPower, int swizzleSize = 4)
         {
             int bpp = 1 << bppPower;
 
             int len = texture.Data.Length;
             int originWidth = (texture.Width + 3) / 4;
-            int originHeight = (texture.Height + 3) / 4;
+            int originHeight = (texture.Height + 3) / swizzleSize;
 
             int xb = CountZeros(Pow2RoundUp(originWidth));
             int yb = CountZeros(Pow2RoundUp(originHeight));