[Webkit-unassigned] [Bug 186886] New: [WPE][ThreadedRendering] WPE crashes rendering some pieces of text when using ThreadedRendering

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186886

            Bug ID: 186886
           Summary: [WPE][ThreadedRendering] WPE crashes rendering some
                    pieces of text when using ThreadedRendering
           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: magomez at igalia.com
                CC: bugs-noreply at webkitgtk.org

As an optimization, FontCascade may render some glyphs to a DisplayList and then replay that list instead of rendering again. But when replaying, the glyphs are not rendered through a GraphicsContext as we would expect, but using FontCascade directly. In the cairo case this means that FontCascade requires a cairo context to render, but if we are in the recording phase of the rendering there's no platform context and we have the crash.

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