14692 2011-11-04 01:02:56 +0000 CSS shader feature detection 2013-07-04 16:05:15 +0000 1 1 1 Unclassified CSS Filter Effects unspecified PC All RESOLVED FIXED P2 normal --- 1 vhardy dino cmarrin dschulze eoconnor smfr stuart.cox dave.null oldest_to_newest 59605 0 vhardy 2011-11-04 01:02:56 +0000 The specification should describe a way for authors to find out if filter effects are supported or not. In addition, it would be useful if there was a way to detect if a particular shading language was supported or not. 59607 1 dino 2011-11-04 05:27:06 +0000 Would a media query be enough? I really like them because they provide both a CSS and JS method to detect features. 90047 2 stuart.cox 2013-07-01 07:44:20 +0000 Would `@supports()` / `window.CSS.supports()` be able to cover this? @supports(filter: custom(url('myshader.vs'))) { /* Styles applied if shader supported */ } Potential down sides: * `myshader.vs` would have to be downloaded before it could be verified if this shader language is supported (although henceforth could be cached) * All parameters to the `custom()` function may be needed, which could make this very verbose 90355 3 dschulze 2013-07-04 16:05:15 +0000 We added the @support rule with a value of "webgl". If that value is supported, WebGL fragment and vertex shader must be supported.