public void TestDxt5Compress()
{
var resPath = Path.Combine(Environment.CurrentDirectory, @"..\..\Res");
var rawPng = Path.Combine(resPath, "D愛子a_春服-pure", "0.png");
Bitmap bitmap = new Bitmap(rawPng);
var bc3Bytes = DxtUtil.Dxt5Encode(bitmap);
RL.ConvertToImageFile(bc3Bytes, rawPng + "-convert.png", 4096, 4096, PsbImageFormat.Png, PsbPixelFormat.DXT5);
}