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Modernizr test for retina / high resolution / high pixel densitiy
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| ### | |
| Modernizr test for retina / high resolution / high pixel density | |
| @ref https://gist.github.com/joaocunha/7675924 | |
| @author Joao Cunha | |
| @license MIT | |
| ### | |
| Modernizr.addTest 'hires', -> | |
| # starts with default value for modern browsers | |
| dpr = window.devicePixelRatio || | |
| # fallback for IE | |
| (window.screen.deviceXDPI / window.screen.logicalXDPI) || | |
| # default value | |
| 1 | |
| !!(dpr > 1) |
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