[whatwg] Enabling LCD Text and antialiasing in canvas

Rik Cabanier cabanier at gmail.com
Wed Feb 13 19:18:33 PST 2013

On Thu, Feb 14, 2013 at 2:12 PM, Robert O'Callahan <robert at ocallahan.org>wrote:

> On Thu, Feb 14, 2013 at 3:55 PM, Rik Cabanier <cabanier at gmail.com> wrote:
>> What would happen if you set 'opaque' to true and you draw with alpha and
>> 'copy' compositing? It seems that that has the same issue (unless you're
>> OK
>> with breaking drawing).
> The alpha values of all moz-opaque canvas pixels are simply not affected
> by compositing.

Exactly! So, this will break drawing as the pixels with no alpha will be
black with no way to undo that.

More information about the whatwg mailing list