[osg-users] glMemoryBarrier

[Tyler Durden]

Hi,

I have two compute shader and i need that second cs must wait until first cs finished his work. Do i have to use memory barriers between each dispatch compute invocation? How can i invoke glMemoryBarrier in openscenegraph?

Thank you!

Cheers,
Tyler

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http://forum.openscenegraph.org/viewtopic.php?p=74964#74964

[Paweł KsięŌopolski]

Post by Tyler Durden
I have two compute shader and i need that second cs must wait until first cs finished his work. Do i have to use memory barriers between each dispatch compute invocation? How can i invoke glMemoryBarrier in openscenegraph?

You certainly should use memory barrier in this case.

In osggpucull example there is InvokeMemoryBarrier draw callback, that you may connect to your osg::DispatchCompute.

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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=74966#74966