On Fri, Jun 5, 2009 at 7:11 PM, gr3go (via
Nabble)<
[hidden email]> wrote:
> Hey,
>
> I would need to obtain the full frame after composition. Before I used a
> simple glReadPixels, but it's not the right choice because it takes too much
> time to execute glReadPixels (framrate dropped from 70 to 50).
> I've been analyzing the compositor module, but I'm not sure how could I
> solve this problem.
>
> Could anyone help me with some tips?
The only sure way is to do a readback in Channel::frameViewFinish,
since your channel might contribute to the rendering, i.e., not all
data making up a frame is present in the Frames given to
Channel::frameAssemble. This has a performance penalty, as you've
observed.
You might play around with PBO transfers: have two eq::Images which
use PBO, syncReadback on the previous frame's image and startReadback
on the 'current' image.
HTH,
Stefan.
> P.S: I'm happy to hear about Equalizer 1.0, Congrats for all the team! Good
> work!
Nice to hear. What are you doing with Equalizer?
