On Mon, 24 Jun 2013 23:31:59 +0200, Dean Jackson <[email protected]> wrote:
Also, the presence of window.WebGLRenderingContext doesn't necessarily
indicate
that WebGL is supported. On iOS for example, that object is available in
Safari
but calling getContext('webgl') fails. The supportsContext method would
allow
authors to easily detect this case.
Since supportsContext is not supported in Safari on iOS, authors cannot
use it to detect this case at all.
We could say in the spec that if a UA knows it cannot create a specific
context, it must hide the corresponding interface object. This does
basically the same thing as supportsContext, except that it would also
work for pages that already do feature detection based on the interface
object.
--
Simon Pieters
Opera Software
