Hi J.P, I found that the GL driver support for properly accelerating the reading from the GPU memory using PBO to be very sensitive for pixel format, and if you fell off the past path it would indeed be slower. It's a while since I implemented osgscreencapture so can't remember all the details off hand, but have a look into forcing the use of the RGBA frame buffer.
Robert. On Mon, Dec 7, 2009 at 9:39 AM, J.P. Delport <[email protected]> wrote: > Hi all, > > running with latest svn OSG, the osgscreencapture example produces the best > speed for me (tested on a few machines) when run with the --no-pbo command > line parameter. All the pbo options (--single-pbo to --triple-pbo) are > slower. Is this expected? I've thought that the pbo versions would be > faster? > > regards > jp > > -- > This message is subject to the CSIR's copyright terms and conditions, e-mail > legal notice, and implemented Open Document Format (ODF) standard. The full > disclaimer details can be found at http://www.csir.co.za/disclaimer.html. > > This message has been scanned for viruses and dangerous content by > MailScanner, and is believed to be clean. MailScanner thanks Transtec > Computers for their support. > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
