233405 2021-11-20 22:10:00 -0800 Link Error: Internal error…Metal backend 2021-11-22 23:58:37 -0800 1 1 1 Unclassified WebKit WebGL WebKit Nightly Build iPhone / iPad iOS 15 RESOLVED DUPLICATE 229378 http://donw.io/post/sphere-indexing-2/ InRadar P2 Normal --- 1 garettbass webkit-unassigned dino jonlee kbr kkinnunen kpiddington webkit-bug-importer oldest_to_newest 1817171 0 garettbass 2021-11-20 22:10:00 -0800 http://donw.io/post/sphere-indexing-2/ The above site displays the following message instead of rendering WebGL: “Status: Errors Link Error: Internal error compiling shader with Metal backend. Please submit this shader or website as a bug to https://bugs.webkit.org” iOS 15.1 iPad Pro (11-inch) (2nd generation) 1817373 1 webkit-bug-importer 2021-11-22 18:10:37 -0800 <rdar://problem/85687082> 1817400 2 kkinnunen 2021-11-22 23:58:37 -0800 Thanks for the report. You can most likely work around this by changing the function name "and" to something else, like "myand": bool and(int x, int y) { return mod(float(x), exp2(float(y))) != 0.0; } The fix will be shipped in a future update. *** This bug has been marked as a duplicate of bug 229378 ***