I was in vanilla making a Minecraft world to to put on my private server when it started lagging, i check how much allocated data I was using and it kept filling up then Minecraft crashed and I went back in and THIS MONSTROSITY HAPPENED (i took probably 50 screenshots.) this didn't occur if I was at 6 chunks or lower of viewing distance but this still was weird, it even occured in the inventory menu. Also the effects changed a bit if i changed the view distance.
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-62958. You can find or add further information on that report.
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