I was playing the newest snapshot when I noticed (on the wiki) that the super secret settings add new shaders. So I tried to change that in the game and then the screen just went black. (I was still able to open the GUI but the screen stayed black. I heard the clicking so I was able to click settings and such without seeing, but there was just a black screen)
Duplicate of MC-32663 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.