Bug 283215 – [iOS Sim, x86_64] 4 webgl swizzler tests are flakily failing.

• Status: NEW
• Component: WebGL

[Ben Schwartz]

The following 4 tests are flakily failing on iOS simulator running on a x86_64 macOS host:

  webgl/1.0.x/conformance/ogles/GL/swizzlers/swizzlers_009_to_016.html [ Failure ]
  webgl/1.0.x/conformance/ogles/GL/swizzlers/swizzlers_041_to_048.html [ Failure ]
  webgl/1.0.x/conformance/ogles/GL/swizzlers/swizzlers_113_to_120.html [ Failure ]
  webgl/2.0.y/conformance/ogles/GL/swizzlers/swizzlers_097_to_104.html [ Failure ]

HISTORY:

None, as we don't test using x86_64 devices in WebKit CI.

TEXT DIFF (097_to_104.html, but they’re all small pixel differences):

 This test runs the WebGL Test listed below in an iframe and reports PASS or FAIL.
 
 Test: ../../../../../resources/webgl_test_files/conformance/ogles/GL/swizzlers/swizzlers_097_to_104.html?webglVersion=2
-[ PASS ] All tests passed
+
+[ 0: PASS ] images are the same
+[ 1: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 2: PASS ] images are the same
+[ 3: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 4: PASS ] images are the same
+[ 5: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 6: PASS ] images are the same
+[ 7: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 8: PASS ] images are the same
+[ 9: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 10: PASS ] images are the same
+[ 11: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 12: PASS ] images are the same
+[ 13: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 14: FAIL ] pixel @ (103, 224 was [178,41,112,255] expected [178,228,112,255]
+[ 15: FAIL ] images are different
+[ 16: PASS ] getError was expected value: NO_ERROR : there should be no errors
+[ 17: PASS ] successfullyParsed is true
+[ FAIL ] 2 failures reported

[Ben Schwartz]

<rdar://problem/140011760>