问题
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?
来源：https://stackoverflow.com/questions/2847451/alpha-blending-is-slow-on-linux