Hi,

> When running at say 1080p and the framing is side-by-side or top-bottom, are
> the contents of all active display layers surfaces expected to be
> automatically downscaled by half?

Yes. The hardware would take care of that.

> If so, does all of the active display layers being downscaled include those
> configured with DLOP_LR_MONO and DLOP_STEREO, as well as ones without either
> flag?

The one without (if any) would just need to be duplicated w/o applying
any horizontal shift (0 parallax).

> What about if the application wants to handle things more efficiently and
> configure the layer at the appropriate half size, thus only rendering to the
> actual half sized surface (of course just when the display mode is
> side-by-side or top-bottom)?  Is this possible?

But then what about legacy applications that expect to just still
render @ 1920x1080 (so the primary surface is expected to be @ HD). 32
MB of VRAM is the least amount required for stereoscopy :) Yes, that's
too much.

-Ilyes

On Fri, Nov 4, 2011 at 2:05 AM, Strelchun, Timothy
<timothy.strelc...@intel.com> wrote:
> Hi guys,
>
> After reviewing the API and impl. changes for adding
> stereoscopic support, some clarifications on intended usage and handling
> behavior would be helpful.
>
> When running at say 1080p and the framing is side-by-side or top-bottom, are
> the contents of all active display layers surfaces expected to be
> automatically downscaled by half?
>
> If so, does all of the active display layers being downscaled include those
> configured with DLOP_LR_MONO and DLOP_STEREO, as well as ones without either
> flag?
>
> What about if the application wants to handle things more efficiently and
> configure the layer at the appropriate half size, thus only rendering to the
> actual half sized surface (of course just when the display mode is
> side-by-side or top-bottom)?  Is this possible?
>
> Thanks,
> Timothy
>
> --
>
> Timothy Strelchun
> Software Engineering
> NTG Service Provider Division (formally DHG)
> Intel Corporation
>
> _______________________________________________
> directfb-dev mailing list
> directfb-dev@directfb.org
> http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
>
>
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