77 lines
1.9 KiB
HTML
77 lines
1.9 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>Checking for simple image layer optimisation</title>
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<style type="text/css" media="screen">
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img {
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float: left;
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width: 150px;
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height: 150px;
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}
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p {
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clear: both;
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margin: 1em 2em;
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height: 180px;
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}
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img {
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-webkit-transform: rotate3d(0, 0, 1, 0);
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}
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</style>
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</head>
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<body>
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<h1>Image optimisation in layers</h1>
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<p style="height: auto">
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In order to run this test you should enable the debugging options that indicate
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what type of compositing layer is being used.
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</p>
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<pre>
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defaults write com.apple.Safari WebCoreLayerRepaintCounter -bool yes
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defaults write com.apple.Safari WebCoreLayerBorders -bool yes
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</pre>
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<p style="height: auto">
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Directly composited image layers will have a yellow border and no repaint counter.
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</p>
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<p>
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<img src="resources/simple_image.png">
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Basic image - no style - can be directly composited
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</p>
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<p>
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<img src="resources/simple_image.png" style="border: 5px solid blue;">
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5px blue border - can NOT be directly composited
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</p>
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<p>
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<img src="resources/simple_image.png" style="margin: 10px 20px;">
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margin - can NOT be directly composited
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</p>
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<p>
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<img src="resources/simple_image.png" style="background-color: grey;">
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solid background - can be directly composited
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</p>
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<p>
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<img src="resources/simple_image.png" style="background: orange url(resources/simple_image.png) -50px -50px;">
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background image - can NOT be directly composited
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</p>
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<p>
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<img src="resources/simple_image.png" style="-webkit-transform: rotate3d(0, 0, 1, 10deg);">
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rotated but otherwise no style - can be directly composited
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</p>
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</body>
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</html>
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