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[Bug 11459] New: "If the image argument is an HTMLImageElement object that is not fully decodable ... then the implementation must return without drawing anything." This is terrible! It completely prohibits displaying images incrementally. When I'm loading a 5 MB 3000x3

From: <bugzilla@jessica.w3.org>
Date: Thu, 02 Dec 2010 23:31:13 +0000
To: public-html@w3.org
Message-ID: <bug-11459-2495@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=11459

           Summary: "If the image argument is an HTMLImageElement object
                    that is not fully decodable ... then the
                    implementation must return without drawing anything."
                    This is terrible!  It completely prohibits displaying
                    images incrementally.  When I'm loading a 5 MB 3000x3
           Product: HTML WG
           Version: unspecified
          Platform: Other
               URL: http://www.whatwg.org/specs/web-apps/current-work/#ima
                    ges
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P3
         Component: HTML Canvas 2D Context (editor: Ian Hickson)
        AssignedTo: ian@hixie.ch
        ReportedBy: contributor@whatwg.org
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-wg-issue-tracking@w3.org,
                    public-html@w3.org


Specification:
http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html
Section: http://www.whatwg.org/specs/web-apps/current-work/complete.html#images

Comment:
"If the image argument is an HTMLImageElement object that is not fully
decodable ... then the implementation must return without drawing anything."
This is terrible!  It completely prohibits displaying images incrementally. 
When I'm loading a 5 MB 3000x3000 image, not being able to draw
partially-loaded images is a serioius problem.    If an image isn't fully
loaded, allow (don't require) UA's to blit what data is available.  Don't
preemptively destroy all progressive loading!

Posted from: 76.24.235.31

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Received on Thursday, 2 December 2010 23:31:15 UTC

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