ActiveTextureManagement.TextureConverter.MBMToTexture C# (CSharp) Method

        public static void MBMToTexture(TexInfo Texture, bool mipmaps)
        {
            TextureInfoWrapper texture = Texture.texture;
            TextureConverter.InitImageBuffer();
            FileStream mbmStream = new FileStream(Texture.filename, FileMode.Open, FileAccess.Read);
            mbmStream.Position = 4;

            uint width = 0, height = 0;
            for (int b = 0; b < 4; b++)
            {
                width >>= 8;
                width |= (uint)(mbmStream.ReadByte() << 24);
            }
            for (int b = 0; b < 4; b++)
            {
                height >>= 8;
                height |= (uint)(mbmStream.ReadByte() << 24);
            }
            mbmStream.Position = 12;
            bool convertToNormalFormat = false;
            if (mbmStream.ReadByte() == 1)
            {
                texture.isNormalMap = true;
            }
            else
            {
                convertToNormalFormat = texture.isNormalMap ? true : false;
            }

            mbmStream.Position = 16;
            int format = mbmStream.ReadByte();
            mbmStream.Position += 3;

            int imageSize = (int)(width * height * 3);
            TextureFormat texformat = TextureFormat.RGB24;
            bool alpha = false;
            if (format == 32)
            {
                imageSize += (int)(width * height);
                texformat = TextureFormat.ARGB32;
                alpha = true;
            }
            if (texture.isNormalMap)
            {
                texformat = TextureFormat.ARGB32;
            }

            mbmStream.Read(imageBuffer, 0, MAX_IMAGE_SIZE);
            mbmStream.Close();

            Texture2D tex = texture.texture;

            Color32[] colors = new Color32[width * height];
            int n = 0;
            for (int i = 0; i < width * height; i++)
            {
                colors[i].r = imageBuffer[n++];
                colors[i].g = imageBuffer[n++];
                colors[i].b = imageBuffer[n++];
                if (alpha)
                {
                    colors[i].a = imageBuffer[n++];
                }
                else
                {
                    colors[i].a = 255;
                }
                if(convertToNormalFormat)
                {
                    colors[i].a = colors[i].r;
                    colors[i].r = colors[i].g;
                    colors[i].b = colors[i].g;
                }
            }

            if (Texture.loadOriginalFirst)
            {
                Texture.Resize((int)width, (int)height);
            }

            if (Texture.needsResize)
            {
                colors = TextureConverter.ResizePixels(colors, (int)width, (int)height, Texture.resizeWidth, Texture.resizeHeight);
                width = (uint)Texture.resizeWidth;
                height = (uint)Texture.resizeHeight;
            }
            tex.Resize((int)width, (int)height, texformat, mipmaps);
            tex.SetPixels32(colors);
            tex.Apply(mipmaps, false);
        }