Hi folks, Am Montag, den 26.06.2006, 16:50 -0400 schrieb Francis Kung: > Further to this thread, I've tested each image operation against the > baseline case, and posted the results at http://fkung.wordpress.com/
Interesting! > All operations on fill(Rectangle2D) also seem very expensive compared to > the rest. I suppose this (at least partially) comes from the JNI overhead here: we transfer the Shape to the native code making 1 JNI call per point/control-point and a couple more to actually paint it. This is very ineffcient, given that (plain) polygon/shape filling is a rather cheap operation. I currently start working on a GL based Graphics2D impl, on top of Escher, which (afaics) has the potential to be very efficient, simply because it avoids JNI calls altogether (except to java.net code every now and then). This could be even more efficient than Sun does (they push 'graphics commands' to a queue, which is read by a native thread that translates it to native GL calls, which - in the case of X - are pushing commands to a queue again... if I understand that correctly). Cheers, Roman -- “Improvement makes straight roads, but the crooked roads, without Improvement, are roads of Genius.” - William Blake
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