Hi guys, Thought I'd share this with you, it looks promising.
Regards, Peter ---------- Forwarded Message ---------- Subject: Re: Bumblebee slower than integrated graphics? Date: Thursday 02 August 2012, 18:44:28 From: Andreas Steinmetz <a...@domdv.de> To: Lekensteyn <lekenst...@gmail.com> On Do, 2012-08-02 at 11:08 +0200, Lekensteyn wrote: > On Saturday 28 July 2012 16:39:25 Andreas Steinmetz wrote: > > 3. "remote" rendering (vglclient running in another shell) > > ========================================================== > > > > ast@woody ~ $ env LD_LIBRARY_PATH=/usr/lib64/opengl/nvidia/lib vglrun > > -d :8 -c yuv glxspheres > The same can be achieved using: > > optirun -c yuv glxspheres > > Furthermore, setting VGL_READBACK=pbo may have a positive impact on > performance. > > VGL is a horrible hack, but it's better than nothing. PRIME is really the > solution that avoids the ugly number of buffers and other inefficiencies in VGL, > but is not ready yet and the proprietary blob cannot work with it. > That's true, though pbo has its own problems with VGL... (see https://sourceforge.net/tracker/?func=detail&atid=678327&aid=3552813&group_id=117509) Even if that is fixed VGL would then need a separate thread to map and process the pbo buffers, else the pbo speedup is minimalistic. Anyway, I did write a VGL transport plugin that really speeds up VGL and makes it again faster than the integrated graphics. Here's the commands used for comparison (/home/ast/vgl contains the transport plugin): 1.: env vblank_mode=0 glxspheres 2.: env LD_LIBRARY_PATH=/usr/lib64/opengl/nvidia/lib vglrun -d :8 \ -c proxy glxspheres 3.: env LD_LIBRARY_PATH=/usr/lib64/opengl/nvidia/lib:/home/ast/vgl \ VGL_TRANSPORT=optirun vglrun -d :8 -c proxy glxspheres Here's the results: window size command default 1920x1080 ----------------------------------------- 1. 164fps 118fps 2. 134fps 105fps 3. 215fps 127fps The plugin source is attached. It is, well, quite some hack as it needs to work around VGL's shim layer for the X11 calls. This is necessary as a separate output thread is used. Otherwise the screen output sequence is similar to that what VGL does except that quite some cruft is gone. If you like the plugin feel free to include it in Bumblee. You would just need to add an option to enable/disable the transport plugin in bumblebee.conf and if the plugin is enabled adjust LD_LIBRARY_PATH to contain the path to the plugin and set VGL_TRANSPORT to "optirun" or whatever you name the plugin. > Regards, > Peter -- Andreas Steinmetz SPAMmers use robot...@domdv.de -----------------------------------------
vgl.tgz
Description: application/compressed-tar
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