[Qt-interest] real time strip chart

[giovanni drogo]

>> In fact my problem is not to draw the traces and scroll
>> the image in main memory (it takes about 2msec (real time
>> and CPU time)) on the 20msec available, but to copy it
>> on the screen.
>
>  Of course. Without a doubt, the CPU takes tremendous
>  advantage of all of the caching going on, but to get
>  the data to the frame buffer, something still has to
>  do real I/O (external bus) operations and these haven't
>  increased in speed nearly as much as CPU (or GPU!)
>  internal operations have. The key is to convince the
>  GPU to do the scrolling for you and only draw the
>  newest column. Easy trick, right? ;-)
>

To convince the GPU is not too difficult, It is just a matter to write
5 integers values in the right registers...

The point is convince QT to do that for me, identifying the registers
and the right value to load in them...


>                               Atlant
>
>