[SWT/RCP] Alpha blending is slow on linux

Posted by elgcom on Stack Overflow See other posts from Stack Overflow or by elgcom
Published on 2010-05-17T08:05:22Z Indexed on 2010/05/17 8:10 UTC
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Filed under:

eclipse

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swt

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linux

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alphablending

we are developing an SWT/RCP(Eclipse 3.5) application on both Windows and Linux (on identical hardware). The application is a GIS app which shows several layered maps(PNG images) rendered with alpha blending.

org.eclipse.draw2d.Graphics.setAlpha(...);
org.eclipse.draw2d.Graphics.drawImage(...);

On Windows the performance is pretty good, but on Linux it is very poor.

is that a Linux(GTK/KDE) problem? or is there any workaround to improve the performance on Linux?

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