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POCSS3 transition/transform/translate3d causes severe flicker on first or last "frame" of the transition (on an iPad)
 

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  1. POCSS3 transition/transform/translate3d causes severe flicker on first or last "frame" of the transition (on an iPad)
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    <p>All,</p> <p>I'm working on a web app specifically for the iPad, and I'm using a CSS3 transition to animate a div (move it from left to right).</p> <p>My class looks like this:</p> <pre><code>.mover { -webkit-transition:all 0.4s ease-in-out; } </code></pre> <p>When the user clicks a button, I do this:</p> <pre><code>var s = "translate3d(" + newPosition + "px, 0, 0)"; $('.mover ').css('-webkit-transform', s); </code></pre> <p>This works great <strong>EXCEPT</strong> the <strong>FIRST</strong> time the user triggers the transition; the first time, there's a very noticeable flicker.</p> <p>I realize I don't need to use translate3d since I'm only moving the div left and right, but, as I understand it, this forces the iPad to use GPU acceleration. (Is this correct?)</p> <p>Many thanks in advance!</p> <p><strong>[UPDATE]</strong></p> <p>I was a little ambiguous about the "flicker". In short - I've been experimenting with a wide variety of CSS3 transitions (specifically on the iPad), and consistently - I've noticed a distinct flicker at the <strong>start</strong> or <strong>end</strong> of the transition.</p> <p>In other words, the transitions themselves are VERY smooth. However, depending on the precise settings, there's a noticeable flicker just before the transition begins or ends.</p> <p>Here's another example: I have three photos (PNGs) stacked on top of each other.</p> <p>The bottom PNG has opacity=1.0, the top 2 have opacity=0.0. Using -webkit-keyframes, I'm able to get silky smooth transitions as the photos fade in and out. When the animation ends, the bottom photo ends at opacity=1.0, the top two at opacity=0.0. (That should be their final state).</p> <p>However, just as the animation ends, the bottom photo flickers. It's as though the browser is forces to redraw/repaint the screen, and that takes a few fractions of a second.</p> <p>It's bad enough to spoil the effect, and render then transitions unuseable. (On my iMac it is <em>almost</em>, but not quite, imperceptible. On the iPad, it's unmissable).</p>
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