* 歴史

** [CODE(HTMLa)@en[moz-opaque]] 属性

[1] [CITE@en-US[HTMLCanvasElement.mozOpaque - Web API Interfaces | MDN]]
([TIME[2014-11-26 19:38:35 +09:00]] 版)
<https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement.mozOpaque>

[2] [CITE@en[430906 – Add moz-opaque attribute on canvas]]
([TIME[2015-01-24 09:29:48 +09:00]] 版)
<https://bugzilla.mozilla.org/show_bug.cgi?id=430906>

** [CODE(DOM)@en[alpha]] オプション

[3] [CITE@en[CanvasOpaque - WHATWG Wiki]]
([TIME[2014-10-11 19:43:55 +09:00]] 版)
<https://wiki.whatwg.org/wiki/CanvasOpaque>

[4] [CITE@en[Re: ''''''[''''''whatwg'''''']'''''' Enabling LCD Text and antialiasing in canvas]]
([[Stephen White]] 著, [TIME[2013-03-13 02:03:32 +09:00]] 版)
<https://lists.w3.org/Archives/Public/public-whatwg-archive/2013Mar/0109.html>

[5] [CITE[''''''[''''''webkit-dev'''''']'''''' New web-facing canvas feature: "opaque" attribute]]
([TIME[2013-03-18 21:58:29 +09:00]] 版)
<https://lists.webkit.org/pipermail/webkit-dev/2013-March/024141.html>

[92] [CITE@en[Web Applications 1.0 r8755     Define getContext('2d', {alpha:false}).]]
( ([TIME[2014-09-09 07:53:00 +09:00]] 版))
<http://html5.org/r/8755>