Ok i think i fixed the issue. When you have an FBO with Multisample you have to perform the blit operation from the MS FBO to a simple FBO.
When the FBO has MRT you have to perform a blit operation per COLOR_ATTACHMENT. so basically you have to perform the glReadBuffer glDrawBuffer glBlitFrameBuffer once per attachment. In the RenderStage.cpp this was done only once. I will post a submission in the corresponding list with the changes. Anthousis Andreadis On Fri, Apr 8, 2011 at 1:04 PM, dimi christop <[email protected]>wrote: > As far I understand, what you are saying is that as soon as you enable > multisampling > on the FBOs you can not use the multiple render targets. All targets show > the > same thing as the first one. > But this is not the case when you dont use a multisampled FBO. > > I had the exact same problem and dropped the efford to find a solution as > soon > I found that probably something inside osg was the culprit. All my pure > OpenGL > examples were running fine. > What does OSGPPU do to handle multisampled FBOs? > > Dimi > > > > ----- Original Message ---- > From: Anthousis Andreadis <[email protected]> > To: [email protected] > Sent: Thu, April 7, 2011 11:39:20 AM > Subject: [osg-users] Multiple Render Targets & Multisampling > > Hi, > > Has anyone tried to do any advanced* multisampled post effect using osg? > If yes, I would like to know the "best osg path" to achieve this. > > *deferred rendered for example > > I have tried to attach a texture to a camera along with the multipleSamples > and > multisampleColorSamples values. > > This works ONLY when i have one rendertarget. In all other cases in the > final > compositing shader, > i see only the first (and not the 2nd 3rd etc ) render target. The other > render > targets are not black, but they appear overwritten with the contents of the > first render target. > > On the other hand i see the osgfpdepth example and it has a completely > different > approach to the subject, almost handling manually fbos and rendertargets. > > > I tried searching on the mailing list for this subject, but almost all > discussions seem to stop without a final result at about 2 years ago. > > Tnx for your time, > > Anthousis Andreadis > [email protected] > > > > _______________________________________________ > 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 >
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