Saša Makorič created BATIK-1369:
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Summary: Incorrect rasterizering of colored mask
Key: BATIK-1369
URL: https://issues.apache.org/jira/browse/BATIK-1369
Project: Batik
Issue Type: Bug
Components: SVG Rasterizer
Affects Versions: 1.17, 1.12
Reporter: Saša Makorič
Attachments: example.png, example.svg, output-values.png
When rasterizing an SVG to a PNG (or any other format, it doesn't matter), the
output image shows slight changes in the RGB values and the alpha channel.
h4. How to reproduce:
* Create an SVG with a masked rectangle filled with color (see example.svg)
and another rectangle filled with the same color.
* Transform the SVG into a PNG using the following command:
{code:java}
java -jar batik-rasterizer-1.17.jar -m image/png -w 800 -d output/
example.svg{code}
* Check the output file (example.png). You will notice that the two rectangles
have differences in their RGB values and alpha channels (output-values.png).
The resulting differences are very small but impact the fidelity of the values,
especially when using more complex SVGs where layers overlap, making the
differences considerably more noticeable.
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