var ddsBytes = File.ReadAllBytes("C:\\Users\\nlight\\Desktop\\test.dds");
var height = BitConverter.ToInt32(ddsBytes, 12);
var width = BitConverter.ToInt32(ddsBytes, 16);
var texture = new Texture2D(width, height, TextureFormat.DXT5, true);
texture.LoadRawTextureData(ddsBytes);
texture.Apply();