Issues with 2D acceleration on large video sizes

[thanar]

I am having screen redraw / 2D acceleration issues when I am dealing with large enough windows under winXP. This is making working with CAD application in full-screen impossible, since CAD applications tend to redraw the whole screen far too often. Issue is 2D acceleration-related, but could not find such a component on the bug reporting system, please edit accordingly if misplaced.

However, issue is not specific to using CAD applications with VBox; It exists on ALL applications as long as its windows are large enough. The issuecan be very easily reproduced by following the below steps:

• Create a new XP VM, all default settings, except for RAM (I set it to 1GB)
• Install winXP as usual
• Install VBox additions
• Open up Internet Explorer (or any other pre-installed application) and set its window to a size over 2500x1400
• Try dragging the window in very small circular motions, the window will soon lag behind mouse, hence the window will move slower than the mouse and continue to move even after the cursor has stopped
• This also happens when SCALING windows

Tried this reproduction procedure on a second identical host computer (27" iMac 11,1; OS X 10.8.5; 8GB RAM) by creating another fresh winXP VM and behavior is exactly the same. On both cases, there is no CPU hog whatsoever on the guest OS.

Tried under win7 guest OS, and dragging would be OK, as well as observed 2D acceleration. However, I have found another ticket (#10953) whose author claims having issues under win7 guest OS.

Related forum threads: ​https://forums.virtualbox.org/viewtopic.php?f=2&t=59556 (created by me on the issue) ​https://forums.virtualbox.org/viewtopic.php?f=2&t=36267 (related to bigger screen resolution I guess)

As a side note, working with CAD applications under Parallels Desktop produces no similar issues (let alone window dragging), on the same host systems.

[thanar]

VBox log

[thanar]

I tried testing under VBox 4.1.x (downloaded 4.1.30 today), but the guest OS would not boot. I will try creating a new xp VM just to try things out.

[thanar]

I have uploaded a video (​https://dl.dropboxusercontent.com/u/5682764/vb_lag.mp4) that demoes the behavior I am referring to by "window lags behind mouse"

[thanar]

Just tested under VB 4.3.8, issue still remains.

Another new thread regarding rapid mouse movement and screen redraw lag under windows 7 guest: ​https://forums.virtualbox.org/viewtopic.php?f=2&t=60238

It's harder for the issue to reproduce under default win7 installation, since VM defaults to multi-CPUs. Switch to single CPU if you want to try it out under win7 for debugging.

[thanar]

Please update the ticket information, since this issue still stands, as of VBox 4.3.10

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.