Hello. When I seperate render in different thread with VSync enabled this thread consumes 100% CPU core while SwapBuffers waiting for sync. Everything works just fine with VSync disabled or in single thread (0 - 1% CPU). Is this way it meant to be or this is NVidia driver bug? Thanks in advance.
GTX 560 Ti
314.22
Microsoft Windows 7 64bit
The driver usually yields short delays. This has a lower latency then a proper mutex, but result in a higher cpu usage.
Why when I render and process Windows messages in sigle thread CPU usage is 0 - 1% CPU. But when I seperate render code to secondary thread it consumes 100% CPU core. This is unacceptable. Also seems that ATI and Intel have no such behaviour.
Problem reported in 2009 and still no response from nvidia?
http://www.retrocopy.com/blog/5/the-battle-of-v-sync-opengl-on-nvidia-vs-ati.aspx