| <!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 { |
| -webkit-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="-webkit-transform: rotate3d(0, 0, 1, 10deg);"> |
| rotated but otherwise no style - can be directly composited |
| </p> |
| |
| |
| |
| |
| </body> |
| </html> |
