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From Chris Lilley <ch...@w3.org>
Subject 16-bit per compent PNGs wrong in Batik
Date Tue, 22 Jun 2010 20:31:00 GMT
Hello batik-dev,

PNG images with 16 bits per component (whether greyscale, rgb, greyscale with alpha, or rgb
with alpha), referenced from an SVG file, seem to render incorrectly in Batik.

As an example, see these three tests. The 'reference image' in wrong, and is generated by
Batik. Opera and Firefox produce the correct rendering

http://dev.w3.org/SVG/profiles/1.1F2/test/harness/htmlObject/struct-image-13-f.html
http://dev.w3.org/SVG/profiles/1.1F2/test/harness/htmlObject/struct-image-14-f.html
http://dev.w3.org/SVG/profiles/1.1F2/test/harness/htmlObject/struct-image-15-f.html

The third test also indicates an issue with transparency (tRNs) in Batik

Direct links to the svg files

http://dev.w3.org/SVG/profiles/1.1F2/test/svg/struct-image-13-f.svg
http://dev.w3.org/SVG/profiles/1.1F2/test/svg/struct-image-14-f.svg
http://dev.w3.org/SVG/profiles/1.1F2/test/svg/struct-image-15-f.svg

-- 
 Chris Lilley                    mailto:chris@w3.org
 Technical Director, Interaction Domain
 W3C Graphics Activity Lead
 Co-Chair, W3C Hypertext CG


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