[Webkit-unassigned] [Bug 135387] New: [WebGL] video upload to texture performance way too slow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=135387

           Summary: [WebGL] video upload to texture performance way too
                    slow
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://krpano.com/ios/bugs/ios8-webgl-video-performanc
                    e/
        OS/Version: All
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebGL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mail at krpano.com


On iOS 8 beta 4 and also in the OSX 10.10 Safari the video to texture uploads are way too slow!
An iPad 3 renders only with unusable 2-3 FPS!

The WebGL rendering itself is very fast, 60 FPS on all devices, only the video frame texture uploading is too slow.

Here a simplified test example with a FPS counter:

http://krpano.com/ios/bugs/ios8-webgl-video-performance/

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