Re: [osg-users] osgPPU and multiple processor

2008-09-29 Thread alexandre amyot murray 
Hi Art,

It works fine to switch between multiple processor, with or without
osg::Switch. It was my error too many threads in my application :D

Thanks

Alex


 Hi Alexandre,

 I have never tried to alternate osgppu's processors dynamicly while
rendering. I am not sure if it is a good idea at all (even also for other
kind of osg nodes), since osg provides a mechanism called osg::SwitchNode
which do the trick.

 Could you try to use the SwitchNode as a parent node for the processors.
This will force to render only the active processor hence changing effects
on the fly. I think this wouldn't make troubles, however I am not sure ;)

 If this doesn't help, could you then provide me with a small example code
reproducing the error. This would be helpful to eliminate the issue.

 Cheers,
 art
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[osg-users] osgPPU and multiple processor

2008-09-26 Thread alexandre amyot murray 
Hi,

I was wondering if it's a good practice to build 2 or more ppu graph and
then altern them to render differents effects.

Example :

I instanciate a osgPPU::Processor * processor1 and add some unit to it :

processor1-addChild(  osgPPU::Unit* aUnit )
processor1-addChild(  osgPPU::Unit* aUnit )
processor1-addChild(  osgPPU::Unit* aUnit )
...
processor1-addChild( osgPPU::UnitOut* ppuOut )

and then a second osgPPU::Processor * processor2 and add different unit to
it :

processor2-addChild(  osgPPU::Unit* aUnit )
processor2-addChild(  osgPPU::Unit* aUnit )
processor2-addChild(  osgPPU::Unit* aUnit )
...
processor2-addChild( osgPPU::UnitOut* ppuOut )

Now my application need to cange the effect every 45 seconds, so when its
time I remove the current processor from my main osg::Node and add the
second processor to it.

Is this ok to do this ? It seems to work fine for a while but then a random
crash appears in the viewer_.frame() call just after I switch processor.

This crash never come if I dont alternate processor1 and 2.

thanks again

Alex
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Re: [osg-users] osgPPU and multiple processor

2008-09-26 Thread Art Tevs 
Hi Alexandre,

I have never tried to alternate osgppu's processors dynamicly while rendering. 
I am not sure if it is a good idea at all (even also for other kind of osg 
nodes), since osg provides a mechanism called osg::SwitchNode which do the 
trick.

Could you try to use the SwitchNode as a parent node for the processors. This 
will force to render only the active processor hence changing effects on the 
fly. I think this wouldn't make troubles, however I am not sure ;)

If this doesn't help, could you then provide me with a small example code 
reproducing the error. This would be helpful to eliminate the issue.

Cheers,
art


--- alexandre amyot murray [EMAIL PROTECTED] schrieb am Fr, 26.9.2008:

 Von: alexandre amyot murray [EMAIL PROTECTED]
 Betreff: [osg-users] osgPPU and multiple processor
 An: osg-users@lists.openscenegraph.org
 Datum: Freitag, 26. September 2008, 21:16
 Hi,
 
 I was wondering if it's a good practice to build 2 or
 more ppu graph and
 then altern them to render differents effects.
 
 Example :
 
 I instanciate a osgPPU::Processor * processor1 and add some
 unit to it :
 
 processor1-addChild(  osgPPU::Unit* aUnit )
 processor1-addChild(  osgPPU::Unit* aUnit )
 processor1-addChild(  osgPPU::Unit* aUnit )
 ...
 processor1-addChild( osgPPU::UnitOut* ppuOut )
 
 and then a second osgPPU::Processor * processor2 and add
 different unit to
 it :
 
 processor2-addChild(  osgPPU::Unit* aUnit )
 processor2-addChild(  osgPPU::Unit* aUnit )
 processor2-addChild(  osgPPU::Unit* aUnit )
 ...
 processor2-addChild( osgPPU::UnitOut* ppuOut )
 
 Now my application need to cange the effect every 45
 seconds, so when its
 time I remove the current processor from my main osg::Node
 and add the
 second processor to it.
 
 Is this ok to do this ? It seems to work fine for a while
 but then a random
 crash appears in the viewer_.frame() call just after I
 switch processor.
 
 This crash never come if I dont alternate processor1 and 2.
 
 thanks again
 
 Alex
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