[Webkit-unassigned] [Bug 279439] New: DMABuf sink: Renderer crash on imx6q

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=279439

            Bug ID: 279439
           Summary: DMABuf sink: Renderer crash on imx6q
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WPE WebKit
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jre at pengutronix.de
                CC: bugs-noreply at webkitgtk.org

Created attachment 472514

  --> https://bugs.webkit.org/attachment.cgi?id=472514&action=review

backtrace for a renderer crash when trying to play video using wpewebkit-2.44.3 on imx6q

Commit e96233 enables the DMABufVideoSink for wpewebkit 2.41 onwards which breaks video playback on platforms not supporting GL_EXT_texture_rg (here: imx6q/GC2000 using etnaviv).

The creation of the YUV textures for DMABufVideoSink fails on such platforms, leading under some circumstances to a renderer crash (see attached backtrace for wpewebkit-2.44.3) caused by an unsuccessfully created texture being passed into glEGLImageTargetTexture2DOES by TextureMapperPlatformLayerProxyDMABuf::DMABufLayer::createEGLImageData. In cases where the video playback attempt does not crash the renderer, videos show only as green rectangles.

Enforcing the 2.40 series path of webkit-gl-video-appsink/GstGLColorConvertElement/GstGLUploadElement via the WEBKIT_GST_DMABUF_SINK_DISABLED=1 environment variable restores video playback on the imx6q.

Could I solve this by adding a runtime check that disables DMABufVideoSink if GL_EXT_texture_rg is unavailable?

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