[Webkit-unassigned] [Bug 85624] Web Inspector: HTMLCanvasElement::didDraw instrumentation.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=85624





--- Comment #13 from Nat Duca <nduca at chromium.org>  2012-05-11 08:55:50 PST ---
(From update of attachment 141108)
The challenge here is the amount of invalidation that you can get would easily overwhelm a UI. E.g. what if I do this on a canvas?
  for(var i= 0; i < 1000; i++)
      ctx.fillRect(i,0,1,100);

I think this could would put 1000 different entries in my timeline, each of which was 1 wider than the previous.

An event and call stack on *first* invalidation might be good for canvas, but it often just points at recalc/layout for DOM nodes...

This is a long winded way of me saying "yes, Pavel, it might be good to understand the general problem a bit more." :)

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