205735 2020-01-03 11:04:26 -0800 REGRESSION: [ Macmini6,2 ] webgl/2.0.0/conformance/renderbuffers/framebuffer-object-attachment.html is failing 2020-01-05 19:37:10 -0800 1 1 1 Unclassified WebKit WebGL WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=205483 InRadar P2 Normal --- 1 tsavell webkit-unassigned ap dino kbr webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1602519 0 tsavell 2020-01-03 11:04:26 -0800 webgl/2.0.0/conformance/renderbuffers/framebuffer-object-attachment.html Description: This test began failing flakily on High Sierra after r253926 History: https://results.webkit.org/?suite=layout-tests&test=webgl%2F2.0.0%2Fconformance%2Frenderbuffers%2Fframebuffer-object-attachment.html Diff: https://build.webkit.org/results/Apple%20High%20Sierra%20Debug%20WK2%20(Tests)/r253998%20(11107)/webgl/2.0.0/conformance/renderbuffers/framebuffer-object-attachment-diff.txt 1602520 1 webkit-bug-importer 2020-01-03 11:04:38 -0800 <rdar://problem/58302264> 1602554 2 ap 2020-01-03 12:21:08 -0800 This looks like a Macmini6,2 issue, as the test started to fail on newer OS versions internally, but always on this hardware model. Which is surprising, because MacBookAir5,2 also has Intel HD Graphics 4000, and it hasn't failed once yet. 1602869 3 kbr 2020-01-05 11:05:53 -0800 The four portions of this test which fail are: ... +[ 469: PASS ] gl.checkFramebufferStatus(gl.FRAMEBUFFER) returned 36053 +[ 470: PASS ] gl.getParameter(gl.RED_BITS) + gl.getParameter(gl.GREEN_BITS) + gl.getParameter(gl.BLUE_BITS) + gl.getParameter(gl.ALPHA_BITS) >= 16 is true +[ 471: PASS ] gl.getParameter(gl.DEPTH_BITS) >= 16 is true +[ 472: PASS ] gl.getParameter(gl.STENCIL_BITS) >= 8 is true +[ 473: PASS ] gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE +[ 474: FAIL ] should be green at (0, 0) expected: 0,255,0,255 was 0,0,0,0 +[ 475: PASS ] gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE +[ 476: PASS ] getError was expected value: NO_ERROR : +[ 477: FAIL ] should be green at (0, 0) expected: 0,255,0,255 was 0,0,0,0 +[ 478: PASS ] gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE +[ 479: FAIL ] should be green at (0, 0) expected: 0,255,0,255 was 0,0,0,0 +[ 480: PASS ] gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE +[ 481: PASS ] getError was expected value: NO_ERROR : +[ 482: FAIL ] should be green at (0, 0) expected: 0,255,0,255 was 0,0,0,0 +[ 483: PASS ] gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE +[ 484: PASS ] should be green ... Rendering to one of the test's framebuffers is failing, and producing all black.