[Webkit-unassigned] [Bug 227596] New: REGRESSION (r279466): [Big Sur] webgl/1.0.3/conformance & webgl/2.0.0/conformance are failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227596

            Bug ID: 227596
           Summary: REGRESSION (r279466):  [Big Sur]
                    webgl/1.0.3/conformance & webgl/2.0.0/conformance are
                    failing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Mac (Intel)
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ayumi_kojima at apple.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

webgl/1.0.3/conformance/glsl/functions/glsl-function-atan-xy.html       
webgl/1.0.3/conformance/ogles/GL/atan/atan_009_to_012.html      
webgl/2.0.0/conformance/glsl/functions/glsl-function-atan-xy.html       
webgl/2.0.0/conformance/ogles/GL/atan/atan_009_to_012.html

History: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=webgl%2F1.0.3%2Fconformance%2Fglsl%2Ffunctions%2Fglsl-function-atan-xy.html&test=webgl%2F1.0.3%2Fconformance%2Fogles%2FGL%2Fatan%2Fatan_009_to_012.html&test=webgl%2F2.0.0%2Fconformance%2Fglsl%2Ffunctions%2Fglsl-function-atan-xy.html&test=webgl%2F2.0.0%2Fconformance%2Fogles%2FGL%2Fatan%2Fatan_009_to_012.html

It looks like the tests have started failing at r279466 

https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r279475%20(3797)/results.html

--- /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/webgl/1.0.3/conformance/glsl/functions/glsl-function-atan-xy-expected.txt
+++ /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/webgl/1.0.3/conformance/glsl/functions/glsl-function-atan-xy-actual.txt
@@ -1,5 +1,30 @@
 This test runs the WebGL Test listed below in an iframe and reports PASS or FAIL.

 Test: ../../../resources/webgl_test_files/conformance/glsl/functions/glsl-function-atan-xy.html
-[ PASS ] All tests passed
+[ 1: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 2: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 3: FAIL ] images are different: at (0,0): ref=(187,0,0,255) test=(255,0,0,255) tolerance=5
+[ 4: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 5: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 6: FAIL ] images are different: at (0,0): ref=(187,187,0,255) test=(255,255,0,255) tolerance=5
+[ 7: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 8: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 9: FAIL ] images are different: at (0,0): ref=(187,192,187,255) test=(255,255,255,255) tolerance=5
+[ 10: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 11: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 12: FAIL ] images are different: at (0,0): ref=(137,192,187,191) test=(137,255,255,255) tolerance=5
+[ 13: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 14: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 15: PASS ] images are the same
+[ 16: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 17: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 18: PASS ] images are the same
+[ 19: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 20: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 21: FAIL ] images are different: at (0,0): ref=(187,192,186,255) test=(186,255,185,255) tolerance=5
+[ 22: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 23: PASS ] getError was expected value: NO_ERROR : no errors from draw
+[ 24: FAIL ] images are different: at (0,0): ref=(137,192,186,191) test=(137,255,185,190) tolerance=5
+[ 25: PASS ] successfullyParsed is true
+[ FAIL ] 6 failures reported

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