[comp.windows.x] Changing individual pixels in an image in real-time

rao@enuxha.eas.asu.edu (Arun Rao) (10/05/89)

	Is it possible to change individual pixels on an image
	without having to do XMapRaised each time ? Each map
	raise takes a long time, and we're trying to do pixel
	updates in real time.

	I think this will involve writing to the image memory
	directly, but I don't know if X provides a mechanism
	for doing so.

	Thanks in advance.

	-Arun Rao

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Arun Rao
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rws@EXPO.LCS.MIT.EDU (Bob Scheifler) (10/05/89)

    Is it possible to change individual pixels on an image
    without having to do XMapRaised each time ?

I know I haven't had much sleep lately, but this question makes absolutely
no sense to me.  What does mapping and raising a window have to do with
changing pixels in an image?  What exactly are you trying to do, and why?