GeoServer

Antialiased rendering scales up poorly

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Won't Fix
  • Affects Version/s: None
  • Fix Version/s: 2.0.x
  • Component/s: WMS
  • Labels:
    None
  • Number of attachments :
    0

Description

This is due to a limitation in Sun own renderer:
http://bugs.sun.com/view_bug.do?bug_id=6508591

The only known workaround is to run multiple GeoServer instances under a load balancer (multiple instances on the same multicore machine, that is).

Other approaches might be looked into, like rendering 2 or 4 times bigger images without antialiasing and then perform reduction with bilinear/bicubic interpolation, thought I doubt the results will be any good.

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Andrea Aime added a comment -

Here is a link to the DuctusRenderer implementation:
http://lxr.js-home.org/lxr/source/sun/java2d/pipe/DuctusRenderer.java#059

Quite silly for 2009, a big singleton with a lot of synchronized blocks...

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Andrea Aime added a comment - Here is a link to the DuctusRenderer implementation: http://lxr.js-home.org/lxr/source/sun/java2d/pipe/DuctusRenderer.java#059 Quite silly for 2009, a big singleton with a lot of synchronized blocks...
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Andrea Aime added a comment -

Tried to render a bigger image and scale it down, no improvement. Guess we have to hope in Sun or OpenJDK (that, atm, has a piss poor rendering implementation perf wise) to improve on this

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Andrea Aime added a comment - Tried to render a bigger image and scale it down, no improvement. Guess we have to hope in Sun or OpenJDK (that, atm, has a piss poor rendering implementation perf wise) to improve on this

People

  • Assignee:
    Andrea Aime
    Reporter:
    Andrea Aime
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Dates

  • Created:
    Updated:
    Resolved: