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CompositeViewer support: Difference between revisions
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→Swap Buffers
m (→Swap Buffers: this is going to be relevant for Qt5 based PUI replacement in the future) |
m (→Swap Buffers) |
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=== Swap Buffers === | === Swap Buffers === | ||
The driver will be queuing up multiple frames in the FIFO, something it | |||
does to help improve the framerate, but increases frame latency. | |||
We aren't powerless in this though, modern drivers and hardware support | |||
putting fences into the pipeline and waiting on these to be completed on | |||
the GPU. In the svn/trunk vesion of the OSG you'll find a swap buffers | |||
SyncSwapBuffersCallback implementation that does this for you. You can | |||
enable this via the env var OSG_SYNC_SWAP_BUFFERS=ON, or --sync on the | |||
command line for examples like osgviewer.<ref>https://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg68525.html</ref> | |||
There is an OpenGL extension that supports syncronizing of swap | There is an OpenGL extension that supports syncronizing of swap | ||
buffers across multiple graphics contexts that allows you to assigns | buffers across multiple graphics contexts that allows you to assigns | ||