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