Hello Hannah,
On 07/23/2012 12:27 PM, Hannah Carbonnier wrote:
> I wrote an application running in a CAVE cluster with head tracking. As
> my objects are not textured, everything works perfectly. But, once I
> added a texture, performance decreases dramatically and image judder.
> This problem does not appear when I launch my application with
> clusterserverx (found in tutorials) launched locally.
>
> Is it only because the textures are heavy to send by the network? Can I
> find a way to keep good performance while displaying my textures?
textures can be slow to send across a network, but that should only
happen once during startup. Are you modifying the textures/images each
frame? One thing to be careful about when targeting a cluster is using
the correct access functions edit*() vs. get*(). The edit*() versions
mark the underlying data as modified, which in a cluster means it needs
to be transmitted again. If that happens on the pixels of an Image
(which is used to back a texture) this can quickly become a large amount
of data that needs to be sent each frame.
In general textured models should not run slower in a cluster (after the
initial distribution) than those without textures [1].
Cheers,
Carsten
[1] well, that assumes the graphics card can cope ;)
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Opensg-users mailing list
Opensg-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/opensg-users
