VH

I am trying on Samsung Galaxy S7 with Android 8.0, and iPad with iOS 11.4.1 adding screenshot from the iPad 

Just in case you are interested in investigating the bug for mobile devices, I made this jsfiddle where it can be easier to see better where the problem could be:...

Yes, this seems to suffer the similiar problems. webgl is a complete mystery to me yet ;) but link I found that might help to someone more experienced: ? https://stackoverflow.com/questions/18453302/how-do-you-pack-one-32bit-int-into-4-8bit-ints-in-glsl-webgl

Great, this seems to work for me too (at least when I am testing Samsung Galaxy S10) original encode/decode with artifacts: https://jsfiddle.net/nfym81qe/1/ msfstef's encoding/decoding: https://jsfiddle.net/nfym81qe/2/ in the meantime, what worked...