Conformance Criteria - Device Pixel

• From: Jim Ley <jim@jibbering.com>
• Date: Fri, 21 Jun 2002 15:02:01 -0000
• To: <www-svg@w3.org>
• Message-ID: <042301c21934$992619c0$ca969dc3@emedia.co.uk>

Hi,

In the Conformance Criteria it says:

"All visual rendering must be accurate to within one device pixel to the
mathematically correct result."

I'm concerned this seems somewhat an excessive requirement, and with even
quite reasonable numbers (large viewbox, small stroke width, complicated
bezier path, high resolution output device,) we end up with conforming
SVG viewers needing better than IEEE-754 Doubles precision calculations.

Why the requirement on device pixels, rather than reference pixels?

Jim.

Received on Friday, 21 June 2002 11:04:53 UTC