From: "Matthias Thoma" <ma.thoma@gmx.de>
Newsgroups: borland.public.kylix.graphics
References: <3e4262fd@newsgroups.borland.com>
Subject: Re: TBitmap.ScanLine[] is slow
Date: Fri, 7 Feb 2003 11:16:30 +0100
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> I get the first pixel address using TBitmap.ScanLine[0] - 250 millisec
> spent, then I run my MMX 'mix' procedure - 30 millisec spent.

Scanlines operate on QImages not on QPixmaps. The first time you call
scanline the pixmap is converted to an QImage - that is why all the
following calls needs less time than the first one.


Matthias Thoma

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