[PD] change pixel color value...

[Mathieu Bouchard]

On Wed, 1 Sep 2010, IOhannes m zmoelnig wrote:

> [pix_rectangle] could be used for that, if you are sure that you really 
> want to modify the pixes (a faster way would be to place some properly 
> sized geo on top of the texture, but of course this might not be exactly 
> what you need)

Sending a 1-pixel geo takes a lot more bandwidth for just one pixel. Are 
you sure that the task of sending four vertices to the video card (and all 
of the accompanying data: glBegin, glEnd, glColor) is going to be any 
quicker than modifying one pixel ?

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| Mathieu Bouchard ------------------------------ Villeray, Montréal, QC