[Webkit-unassigned] [Bug 124223] New: fast/canvas/webgl/draw-arrays-out-of-bounds.html is flaky, fails about 20% of the time

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=124223

           Summary: fast/canvas/webgl/draw-arrays-out-of-bounds.html is
                    flaky, fails about 20% of the time
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: MakingBotsRed, Regression
          Severity: Normal
          Priority: P2
         Component: WebGL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: thorton at apple.com
                CC: dino at apple.com, roger_fong at apple.com


> run-webkit-tests -2 --repeat-each=100 fast/canvas/webgl/draw-arrays-out-of-bounds.html

results in

> 80 tests ran as expected, 20 didn’t

on my local machine, and the bots approximately agree:

http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fcanvas%2Fwebgl%2Fdraw-arrays-out-of-bounds

Seems to have started relatively recently, but I can’t find a revision to blame.

The failure looks like this:

  Test empty buffer
- PASS context.drawArrays(context.TRIANGLES, 0, 1) generated expected GL error: INVALID_OPERATION.
+ FAIL context.drawArrays(context.TRIANGLES, 0, 1) expected: INVALID_OPERATION. Was INVALID_VALUE.
  PASS context.drawArrays(context.TRIANGLES, 0, 10000) generated expected GL error: INVALID_OPERATION.

  Test buffer with 3 float vectors
- PASS context.drawArrays(context.TRIANGLES, 0, 3) generated expected GL error: NO_ERROR.
+ FAIL context.drawArrays(context.TRIANGLES, 0, 3) expected: NO_ERROR. Was INVALID_OPERATION.
  PASS context.drawArrays(0x0009, 0, 3) generated expected GL error: INVALID_ENUM.

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