[Webkit-unassigned] [Bug 186764] New: [Threaded paintingEngine] Fix rendering glitches

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186764

            Bug ID: 186764
           Summary: [Threaded paintingEngine] Fix rendering glitches
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit WPE
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: karl.leplat_ext at softathome.com
                CC: bugs-noreply at webkitgtk.org, loic.yhuel at softathome.com,
                    magomez at igalia.com, olivier.blin at softathome.com,
                    zan at falconsigh.net

By enabling NicosiaPaintingEngineThreaded instead of NicosiaPaintingEngineBasic which is the default implementation,
we have seen that some frames are incomplete causing glitches on the screen.

In fact, we are trying to upload buffers that have not finished processing.

To avoid this problem, we must use the Nicosia::Buffer function waitUntilPaintingComplete() before each
uploading.

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