[maemo-developers] [maemo-developers] What is the 770 display hardware able to accalerate?

[From: Gustavo Sverzut Barbieri]

On 11/7/05, Clemens Eisserer <linuxhippy at gmail.com> wrote:
> Hi there,
>
> I just read that the 770 display hardware is quite slow but on the
> other hand it supports pixel doubling which isn't such a trivial
> feature at all.

I think you mis understood that mail.

1) pixel doubling is trivial, instead of painting one pixel at (x,y),
you paint 4 pixels at (2x,2y), (2x, 2y+1), ( 2x+1, 2y) and (2x+1, 2y+1
).

2) dealing with large pictures, so much data, consumes lots of CPU
cycles, that nokia 770 doesn't have (200mhz arm)


> Does anybody know which operations are (at least partially)
> accalerated by the integrated graphic controler - e.g. are
> fills/draw/blit operations which are done by xlib accalerated?
> Does the target surface play a role wether it can be accalerated (e.g.
> can fills/blits to or from a pixmap be accalerated)?

I don't know, let someone that knows the hardware better reply this part.


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Gustavo Sverzut Barbieri
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