- From: Rik Cabanier <cabanier@gmail.com>
- Date: Fri, 16 May 2014 20:41:20 -0700
- To: Justin Novosad <junov@google.com>
- Cc: Katelyn Gadd <kg@luminance.org>, "whatwg@whatwg.org" <whatwg@whatwg.org>, Glenn Maynard <glenn@zewt.org>, Ian Hickson <ian@hixie.ch>
On Fri, May 16, 2014 at 3:06 PM, Justin Novosad <junov@google.com> wrote: > On Fri, May 16, 2014 at 5:42 PM, Rik Cabanier <cabanier@gmail.com> wrote: > >> >> Is the Web page not composited in sRGB? If so, it seems the backing store >> should be sRGB too. >> >> > > The web page is not composited in sRGB. It is composited in the output > device's color space, which is often sRGB or close to sRGB, but not always. > A notable significant exception is pre Snow Leopard Macs that use a gamma > 1.8 transfer curve. > By the way, sniffing the display color profile through getImageData is a > known fingerprinting technique. This factor alone can be sufficient to > fingerprint a user who has a calibrated monitor. > I'm unable to reproduce what you're describing. So, if I fill with a color and repeatedly do a getImageData/putImageData, should I see color shifts?
Received on Saturday, 17 May 2014 03:41:46 UTC