[Upstream] c-librsvg2.40 Radial gradient lost at small thumbnail sizes
Closed, ResolvedPublicBUG REPORT
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Authored By

	JoKalliauer
	Jun 6 2021, 7:22 PM

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Referenced Files

	F37019908: Screenshot 2023-05-19 at 07-41-52 File T284407.svg – Wikimedia Commons.png
	May 19 2023, 11:43 AM

	F37019906: Screenshot 2023-05-19 at 07-41-32 File T284407.svg – Wikimedia Commons.png
	May 19 2023, 11:43 AM

	F34483904: librsvg240Bug_Inkscape.png
	Jun 6 2021, 7:22 PM

	F34483899: librsvg240Bug_librsvg251.png
	Jun 6 2021, 7:22 PM

	F34483897: librsvg240Bug_librsvg24021.png
	Jun 6 2021, 7:22 PM

	F34483906: librsvg240Bug_batik.png
	Jun 6 2021, 7:22 PM

	F34483902: librsvg240Bug_rendersvg.png
	Jun 6 2021, 7:22 PM

	F34483914: librsvg240Bug.svg
	Jun 6 2021, 7:22 PM

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Description

Reported downstream at https://en.wikipedia.org/wiki/Wikipedia:SVG_help#Radial_gradient_lost_at_small_thumbnail_sizes by @Cmglee

List of steps to reproduce :

librsvg240Bug.svg624 BDownload

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg  PUBLIC '-//W3C//DTD SVG 1.1//EN'  'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'>
<svg width="149" height="149" usvg:version="0.9.1" viewBox="0 0 300 300" xmlns="http://www.w3.org/2000/svg" xmlns:usvg="https://github.com/RazrFalcon/resvg">
 <radialGradient id="a" fx=".25" fy=".25">
  <stop stop-opacity="0" offset=".5"/>
  <stop stop-opacity=".05" offset=".7"/>
  <stop stop-opacity=".25" offset=".99"/>
 </radialGradient>
 <circle r="1e4" fill="#fff"/>
 <circle transform="translate(-1e4)" cx="1e4" r="300" fill="url(#a)" stroke="#f00" stroke-opacity="0"/>
</svg>

source: https://commons.wikimedia.org/wiki/File:Comparison_gender_life_expectancy_CIA_factbook_phab.svg

What happens?:
Radial gradient lost at small thumbnail sizes

librsvg240Bug_librsvg24021.png (149×149 px, 1 KB)

What should have happened instead?:

rust-librsvg2.50	resvg	Inkscape	Batik

Event Timeline

JoKalliauer closed this task as Declined.Jun 6 2021, 7:22 PM

JoKalliauer triaged this task as Lowest priority.

JoKalliauer created this task.

JoKalliauer moved this task from Backlog to Upstream (librsvg) on the Thumbor board.

JoKalliauer moved this task from Backlog to Patch merged upstream on the Upstream board.

JoKalliauer reopened this task as Stalled.Jun 6 2021, 7:27 PM

Just a note for possible workarounds:

removing one of
- transform="translate(-1e4)" cx="1e4"
- stroke="#f00" stroke-opacity="0"
solves the issue.
It seems that if the preview-size is smaller than half of the viewBox it is problematic. (so using a small viewBox-size might be a third workaround)

Large unnecessary transformation should be avoided, they often lead to numeric issues in librsvg.

JoKalliauer moved this task from Backlog to update librsvg on the Wikimedia-SVG-rendering board.Jun 6 2021, 7:50 PM

Looks like this is fixed as a result of the thumbor upgrades.

hnowlan closed this task as Resolved.May 17 2023, 11:45 AM

hnowlan claimed this task.

again confirming fix

file	librsvg2.40	librsvg2.44
https://commons.wikimedia.org/wiki/File:T284407.svg

[Upstream] c-librsvg2.40 Radial gradient lost at small thumbnail sizesClosed, ResolvedPublicBUG REPORTActions

Description

Event Timeline

[Upstream] c-librsvg2.40 Radial gradient lost at small thumbnail sizes
Closed, ResolvedPublicBUG REPORT
Actions