Linked by Thom Holwerda on Wed 5th Aug 2009 00:12 UTC, submitted by rexstuff
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Member since:
2005-07-07
Because they are done in a completely different way compared to a few years ago. Don't think I don't know your issues, I do, I've seen it too. The resizing one is being analyzed by some ATI ppl together with KWin and Qt people and they still don't really know what exactly is going on. It has to do with requesting a new pixmap which involves blanking a pixmap and transferring it from the video memory to ram, which can take over a second on the ATI driver. Something like that. There is a hack around it, which fills the pixmap with random garbage but that looks horrible and has been removed. So we're back to horrible slow and they still don't know what to do about it. And it doesn't happen with other toolkits because they don't use doublebuffering like Qt does it. Full-window double buffering is very slow, so no toolkit does it. Qt does it very smart, and if the drivers work properly it's faster than anything out there.
But I have a feeling no amount of details or information will change your mind, will it?