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List:       kde-kimageshop
Subject:    Re: Tiles, Mmap and Crashing
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2006-03-30 14:05:19
Message-ID: Pine.LNX.4.63.0603301602050.30880 () calcifer ! valdyas ! org
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On Thu, 30 Mar 2006, Bart Coppens wrote:

> Would anyone object to us having a pixelPtrSafe, returning some kind of Shared 
> Pointer to the data, that ensures data availability as well? Since 1.6 isn't 
> allowed to remove methods, the old functions can't disappear. (Or if you have 
> a better idea, please shout!).

Mark the old functions that give a direct pointer as deprecated; I really want
a Chinese wall between the real memory and the coder. So, I'd say add a readPixel
and writePixel that will return and write a copy of a real pixel, analogous to
readBytes and writeBytes (which shouldn't use the iterators like the they now,
but be implemented at the lowest possible level.

Btw: we need to think about how we can get pixels really fast into textures for
our future OpenGL fun :-). Perhaps an iterator that returns blocks of pixels: copies
of tiles or something like that.

Boudewijn
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