W3C home > Mailing lists > Public > www-svg@w3.org > February 2001

RE: blending, group rendering

From: Dave J Woolley <david.woolley@bts.co.uk>
Date: Mon, 19 Feb 2001 16:06:48 -0000
Message-ID: <81E4A2BC03CED111845100104B62AFB50102A4B4@stagecoach.bts.co.uk>
To: "'www-svg@w3.org'" <www-svg@w3.org>
> From:	Stephane Conversy [SMTP:conversy@emn.fr]
> since both of the rects have an opacity of 0.5, and the alpha
> values should follow the equation Ca'=1-(1-Ea)x(1-Ca) (CR p267).
	This refers to
; I don't 
	believe the PDF version is normative, so the page
	numbers are not guaranteed.  The section is 14.2.

> Obviously, I should have missed something...
	Have you converted everything to gamma 1.0 before 
	computing the colours.  The spec does seem to require
	this, although it does not stand out well.  The default
	gamma is 2.2.

>   [DJW:]  
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Received on Monday, 19 February 2001 11:07:08 UTC

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