I don't want to chime in with an empty "me too" comment, but I can definitely vouch for the performance of Vade's screen capture patch, as I've been using it in a QC based application I've been testing and it works excellently. I haven't done any profiling, but there is no perceivable lag in what I am taking the screen shot capture of (Processing 135, and web browser stuff). -George Toledo
On Mon, Apr 20, 2009 at 1:28 PM, vade <[email protected]> wrote: > If you are making your own application you can create an open gl context > and pixel format that is full screen capable and use my QC plugin that takes > screenshots on the GPU at full framerate and outputs a texture (its very > very fast). > > http://002.vade.info/?page_id=4 > > > > > On Apr 20, 2009, at 1:20 PM, Troy Koelling wrote: > > >> On Apr 18, 2009, at 9:57 AM, Jo-el wrote: >> >> Is there any way to take the visual output from an app or from OSX itself >>> and put it as the input to a renderer in QC? >>> >> >> Something like this would work, but it may be slow depending on how >> NSBitmapImageRep is implemented (and I really don't know.) >> >> http://cbess.blogspot.com/2008/03/nsview-screenshots-using-cocoa.html >> >> If it has to download any content off the GPU to the CPU, then QC will >> upload it back then it will be less than optimal. If your application >> doesn't have high framerate animations or audio sync'd video, then that >> shouldn't be a problem. >> >> There may be other solutions, that's just the first one that came to mind. >> >> Troy >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Quartzcomposer-dev mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> >> http://lists.apple.com/mailman/options/quartzcomposer-dev/doktorp%40mac.com >> >> This email sent to [email protected] >> > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > > http://lists.apple.com/mailman/options/quartzcomposer-dev/gtoledo3%40gmail.com > > This email sent to [email protected] >
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