[osg-submissions] Move MRT into FBO patch

[J.P. Delport]

Hi Art,

I've quickly looked at the changes and do not see any problems. I think 
your way of setting up the drawbuffers in apply is good.

The typedef "MultipleRenderTargetMap" (in FrameBufferObject) is a bit 
misleading though. The AttachmentMap is a std::map, but 
MultipleRenderTargetMap is a std::vector? But these are semantics, the 
functionality looks good to me.

Will also test tomorrow.

regards
jp

Art Tevs wrote:
> Hi Robert,
> 
> as from our discussion previously here is now the
> patch which do move the MRT functionality out of
> osgUtil::RenderStage in to osg::FrameBufferObject.
> 
> ---------------------------------------------------
> DESCRIPTIUON: 
> Each FBO does now manages a list of all color
> attachments , which are setted as rendering targets
> with glDrawBuffers call when the FBO is applied.
> 
> This is neccessary to allow the use of FBOs without
> camera objects as it was done previously.
> 
> 
> TESTING:
> Tested with osg examples and with my own. The
> applications seems to work properly.
> osgmultiplerenderingtarget example do also its job
> without any problems. 
> -----------------------------------------------------
> 
> I would like to have this patch included before v2.4,
> since this do enables more general use of MRTs in osg.
> 
> It would be also very gladious if the author of the
> previous implementation could check the new
> functionality with his own software.
> 
> 
> Best regards,
> Art
> 
> 
> 
> 
> 
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