I do a lot of RTT in my app with the need to pipe the resultant texture
data out to a separate app. I am trying to get a feel for how
difficult it would be to implement the use of PBOs in OSG to facilitate
fast texture readbacks. Any suggestions?
Thanks,
Ed
Robert Osfield wrote:
HI Ed,
On 9/8/06, *Ed* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Does osgprerender uses PBO or pbuffer?
osgprerender doesn't use PBO.
It does use FBO by default, falling back to pbuffer if this isn't
supported, then back to frame buffer for RTT if this isn't supported.
From the app help info it
appears I can specify that a pbuffer be used for RTT, but I am
looking
for an example that uses Pixel Buffer Objects. Just want to make
sure
we are doing the apples/apples, oranges/oranges thing....
Indeed. PBO is something quite different than FBO/Pbuffers.
The osg::ImageStream class by default uses PBO's where supported, this
is then subclassed by the movie reading xine and Quicktime plugins.
Robert.
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