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Re: ImageBuffer Paint problem [message #18363 is a reply to message #18362]

Wed, 24 September 2008 21:52

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

I think this is definitely quite confusing...

Anyway, let us say this strange requirement has its root in performance and implementation issues.

The main problem is that Image is sort of "immutable", which allows it to cache host platform resource handle. That is not possible with ImageBuffer, whose content can change at any moment.

If it would be supposed to work in "non-ugly" way, ImageBuffer <-> Image conversions would require the full copy of ImageBuffer pixels.

In practice, you should use ImageBuffer only as local variable, "Image content accesor". Or be very very careful...

Mirek

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[Message index]

		ImageBuffer Paint problem By: kodos on Wed, 24 September 2008 18:42
		Re: ImageBuffer Paint problem By: mr_ped on Wed, 24 September 2008 18:46
		Re: ImageBuffer Paint problem By: kodos on Wed, 24 September 2008 19:11
		Re: ImageBuffer Paint problem By: kodos on Wed, 24 September 2008 21:02
		Re: ImageBuffer Paint problem By: mirek on Wed, 24 September 2008 21:52

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