[osg-users] How to ensure stable execution of the GPU?

Robert Osfield robert.osfield at gmail.com
Sat Jul 19 08:11:53 PDT 2008


HI Alfe,

It sounds like you have two Cameras and single GraphicsContext - if
the mirror view overlays the main image.

You mentioned you have two graphics cards, are running it as SLI?

Robert.

On Sat, Jul 19, 2008 at 3:45 PM, Alf Inge Iversen <alf-inge at autosim.no> wrote:
> Robert Osfield wrote:
>
>> > Can I interpret your answer as: "No, there are no ways to control
> the
>> > start of the GPU execution from the OSG API." ?
>>
>> You could insert a camera pre/post callback if you want to add your
>> own sync code.
>>
>> In your email you say you have two channels, but then you say its
>> embedded.  Do you mean two physical displays, or a single display with
>> two cameras?  It kinda sounds like your using the confusing Performer
>> terminology, where a channel could be either a camera or a display.
>> Could you say specifically what your Camera and GraphicsContext set up
>> is.
>
> Sorry to using confusing terms, we used Performer when we switched to
> OSG; I am not very much into 3D programming, our main 3D programmer is
> on vacation ...
>
> We run one display per computer with the visualization running in full
> screen mode. The full screen image displays the view as seen from the
> driver's position (it's a driving simulator). A back mirror is
> implemented as a separate camera that draws an image on a part of the
> main image:
>
>                      main display
> --------------------- /
> |                   |
> |     mirror        |
> |           \ ----  |
> |             |  |  |
> |             ----  |
> ---------------------
>
> When it comes to details about how the Camera and the GraphichsContext
> is set up, I think I have to leave this problem until our visual
> programmer is back from vacation. I was just looking for an "easy" way
> to try to fix a big problem ...
>
> I appreciate very much your effort!
>
>
> Thanks,
> -Alf Inge
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