OpenGL Performance

Some rough figures and compatibility tests, see wiki/Usage/OpenGL for more information.

Test Setup

Running ​GpuTest 0.7.0, on a Fedora 22 system with a ​GeForce GTX 760, kernel 4.0.5, ​nvidia driver 346.59 at 1280x720 resolution.

The ​vmplayer tests below start the same tests in a Windows 7 Ultimate 64-bit virtual machine using VMware Player 7.1.0 build-2496824.

The xpra tests were using a local socket connection with mmap and displaying with opengl rendering, which obviously eats up a little bit of GPU power.

Raw Data

Platform	Test
	FurMark		TessMark X8		PixMark JuliaFP32		PixMark Volplosion
	Points	FPS	Points	FPS	Points	FPS	Points	FPS
Bare Metal	4283	71	87143	1453	29994	498	2969	49
vglrun	3769	62	8842	147	10621	177	2696	44
vmplayer	1736	28	failed		3459	57	failed
vglrun vmplayer	1774	29	failed		3525	58	failed
xpra vglrun vmplayer	2494	41	failed		10927	181	failed
wine	5078	84	96217	1606	42552	708	3585	59
vglrun wine	2891	48	12170	202	10667	177	2741	45
xpra vglrun wine	failed		9518	158	9085	151	2693	44

Observations

• virtualgl adds some overhead which is most noticeable when running on bare metal, hardly noticeable when running through vmplayer as it slows down the opengl performance considerably already.
• running through xpra actually gives a performance boost in some cases, probably because it does not need to wait for the actual screen refresh since there isn't one.
• wine shows high performance, even faster than bare metal, but some tests display with quite a lot of stuttering, the stuttering goes away when running through vgl, but so does most of the performance..

Note: ​VirtualBox 4.3.x failed to launch any of the tests and is not included here.