Thank you for the quick response! COMPUTER:
*Processor* 3.4 GHz Intel Core i7 *Memory* 8 GB 1600 MHz DDR3 *Graphics* NVIDIA GeForce GTX 680MX 2048 MB (as far as I know, only one graphics card) *Software* OS X 10.8.3 (12D78) PROJECTOR: NEC M300X<http://www.necdisplay.com/p/multimedia-projectors/np-m300x?type=support> Connection cable is USB to 15-pin. I am not too familiar with GPU configurations, accelerated vs unaccelerated displays. If these are possible culprits, does that imply the need for a hardware update? Or are there settings within the system that can be modified? The end goal is to project an image onto four columns. In this case, the image has been cropped into four vertical divisions. The image is therefore rendered in a bezier patch to manipulate/distort the surface (to roughly match the column diameter). I've attached a composition that uses 1024's particle warfare motion detection patch. This is enough to slow my projector's display to 10-15 fps. This will be the general framework for the final composition. The final composition will likely include many more graphic elements such as images, movies, particle systems, etc. On Mon, Jun 17, 2013 at 5:34 PM, Christopher Wright < christopher_wri...@apple.com> wrote: > > On Jun 17, 2013, at 3:25 PM, Joshua Kahn Aronson <joshua.aron...@gmail.com> > wrote: > > The particular composition I am working with at the moment runs on my > desktop display at roughly 60-70 fps. On the projector display in > fullscreen, it runs between 10 and 15 fps. What are the possible reasons > for this? > > > Can you describe your configuration some? What kind of machine, how many > graphics cards, etc? 10-15fps sounds like a page off problem (i.e., you > have 2 GPUs, and the composition is being rendered on the GPU that isn’t > driving the projector, so per-frame you end up needing to synchronize with > both GPUs) or an unaccelerated display problem (i.e., one of those USB > display dongle things, which doesn’t have a GPU, so things end up > rasterizing on the CPU). A variation of the first case is having a beefy > powerful GPU for the main display, and an anemic old GPU for the projector. > > > I have looked online for information on how to keep QC compositions simple > and efficient, hoping this would allow them to run more smoothly. However, > I have not been able to find much information. For example, will a > composition's performance be greatly affected by having excess audio/video > inputs? Are there any general guidelines for maintaining the overall > performance of a composition through more efficient design? > > > There aren’t many documents on this, but there are definitely some > patterns to avoid. Can you describe your composition some, or better yet, > can you provide your composition (stripped of assets + special bits)? In > general, you’ll want to keep the patch count as low as possible, and you’ll > want to hoist stuff out of iterators wherever possible. There are some > other things you could do, but without knowing what the composition does > it’s difficult to make meaningful recommendations. > > -- > Christopher Wright > christopher_wri...@apple.com > > > >
rialto_simplified.qtz
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