Thanks a lot for your reply @labris . Please clear my confusion. One of the solution to overcome aliasing, I saw that the super sampling is
new BABYLON.PassPostProcess("scale_pass", 4.0, camera, BABYLON.Texture.BILINEAR_SAMPLINGMODE);
new BABYLON.PassPostProcess("scale_pass", 2.0, camera, BABYLON.Texture.BILINEAR_SAMPLINGMODE);
new BABYLON.PassPostProcess("scale_pass", 1.0, camera, BABYLON.Texture.BILINEAR_SAMPLINGMODE);
Please have a look into this Anti-aliasing problem - Questions & Answers - HTML5 Game Devs Forum . here only I got above lines for supersampling. And It is overcoming the aliasing issue too. But the solution given in this link How to get antialiased render output like this - #17 by Evgeni_Popov doesn’t have those three lines of codes. So What is actually supersampling. Please help me to understand