[maemo-developers] Does anyone know the mechanism in Nokia's LCD driver?

[From: Siarhei Siamashka]

On Tuesday 13 January 2009, Frantisek Dufka wrote:
> Siarhei Siamashka wrote:
> > XV should make a perfect backend for SDL, because it maps fine on SDL
> > API (SDL_SetVideoMode/SDL_Flip/...). In general, XV is a good backend
> > for anything that uses double-buffered or triple-buffered
> > fullscreen/fullwindow blits. It is possible to get ~27.5 frames per
> > second in 800x480 resolution for 16bpp rgb color format without
> > tearing. With a lower resolution it is possible to go up to ~55 frames
> > per second.
>
> Hmm, I hope there is some work done on this front (Xv or even openGLES
> based backend for SDL) for Fremantle.
> The alpha release has same old 1.2.8-23 SDL version though. Or is there some
> alternative to SDL for 2D graphics?

I was only talking about N800/N810 hardware, its kernel, xserver, SDL and how
to best use them on the current generation of internet tablets.

Fremantle is a completely different subject and I don't feel like discussing
it yet. It surely will bring new exciting features and challenges.

Regarding improved SDL or whatever is needed for 2D games, in any case it is
one of the things that the community can do with or without official Nokia
support.

> BTW, as for the external lcd controller status - I have just checked and
>    CONFIG_FB_OMAP_LCDC_EXTERNAL is disabled for both RX-51
> confugurations in Fremantle alpha kernel (unlike e.g. PowerVR stuff) so
> maybe we finally has directly mapped framebuffer in SDRAM ?

We can discuss this stuff after the actual HW is out :)

-- 
Best regards,
Siarhei Siamashka