Is the premultiplied specified when creating QImage or other ? From: [email protected] [mailto:[email protected]] On Behalf Of ext Till Oliver Knoll Sent: Wednesday, August 29, 2012 5:04 PM To: Qt Project Subject: Re: [Interest] About copying the image buffer with alpha blending
Am 29.08.2012 um 09:53 schrieb <[email protected]<mailto:[email protected]>>: Hi, We found that QPainer::drawImage takes 30~50ms for one 150*114 image, it seems a little slow. Make sure all images are using *premultiplied* alpha values when doing image compositing. Does that help? Cheees, Oliver
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