[Webkit-unassigned] [Bug 138293] New: WebGL Canvases are blurry when scaled up using CSS and -webkit-optimize-contrast

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sun Nov 2 10:35:36 PST 2014


            Bug ID: 138293
           Summary: WebGL Canvases are blurry when scaled up using CSS and
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Macintosh Intel
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jhuckaby at gmail.com

Created attachment 240815
  --> https://bugs.webkit.org/attachment.cgi?id=240815&action=review
WebGL canvas scaled with CSS, on Safari, Chrome and Firefox

WebGL canvases seem to ignore the CSS "image-rendering:-webkit-optimize-contrast;" rule, and always render blurry when scaled up.  Here is a demo:


This page displays how I would expect it to in Firefox -- all the pixels are crisp as they should be.  Chrome seems to have the same issue as Safari.  See screenshot for a comparison of all three browsers.

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