If texture format before calling LoadImage is DXT1 or DXT5 , then the loaded image will be DXT-compressed ( into DXT1 for JPG images and DXT5 for PNG images ) .
如果在调用之前纹理格式的加载图像是DXT1或DXT5,那么加载的图像将被DXT压缩(DXT1为JPG图像和DXT5为PNG图像)。