OpenGL "speed issue" with Quake2

[hb]

I've been experimenting with gaming within a VBox guest since the support for Guest OpenGL has been added.

Unfortunately Quake 2 has some problems with VBox OpenGL. It's not that the OpenGL driver is too slow but there a inconsistent timing issues causing the game to be unplayable. Interestingly enough OpenGL itself seems to be very performant. Using the old 3Fingers demo (crusher.dm2 and massive1.dm2) I get around 90 and 100 FPS which equals the performance I got back then with my PII-400 and 2x12 MB Voodoo2 in SLI mode.

I would call this bad. Since gtk-recordmydesktop is not fast enough to capture those speedissues I decided to capture a small video with my digicam. At first you'll see the two demos I mentioned and the fast rendering speed. Then I launch the first intro demo where you experience the slowdowns. At last I start a single player game where I guess the problem becomes obvious.

You can have a look at the video over at youtube: ​http://www.youtube.com/watch?v=Mw9-igE0neI

A movie can say more than thousand words :)

I have attached my VBox.log

Host is an Ubuntu 8.10 AMD64 machine running VBox 2.2.2 Guest is a WinXP SP2 with the latest guest additions installed and 3D accelleration enabled. The VM has 1024 MB RAM and 128 MB graphic memory.

Physical host: Opteron 170 3 GB RAM GeForce 7900GS graphic adapter with 256 MB RAM

[hb]

VBox.log from Windows XP SP2 gues running Q2

[hb]

The video uploaded at youtube looks pretty bad although I encoded it with H264. If you like to view in better quality then let me know. It's only 30 MB big.

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.