- From: Dave J Woolley <david.woolley@bts.co.uk>
- Date: Mon, 19 Feb 2001 16:06:48 -0000
- 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). [DJW:] This refers to <http://www.w3.org/TR/2000/CR-SVG-20001102/masking.html#SimpleAlphaBlending> ; 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... [DJW:] 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:] > -- --------------------------- DISCLAIMER --------------------------------- Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of BTS. >
Received on Monday, 19 February 2001 11:07:08 UTC