[Bug 37308] New: GDI performance regression after Ubuntu 12.04 to 14.04 upgrade; incl. testable app

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=37308

            Bug ID: 37308
           Summary: GDI performance regression after Ubuntu 12.04 to 14.04
                    upgrade; incl. testable app
           Product: Wine
           Version: 1.6.2
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: gdi32
          Assignee: wine-bugs at winehq.org
          Reporter: gustep12 at yahoo.com

Thank you for working on Wine. I love the fact that Wine occasionally works
better (much faster and yet accurate rendering) for legacy Windows XP
applications than newer Windows versions!

For example, here is a legacy CAD application which is easy to install and run
in Wine, but which is very GDI intensive. As such, it is a good test for GDI
speed issues. When you open a complex CAD file, this app runs nicely in Windows
XP, but 5x or 10x slower in Windows Vista and later. Fortunately, it runs at
least the same or faster in Wine than it does in WinXP!

In fact, I guess I run this app half the time just to see how and if Wine is
working.

The application in question is PCB123 v2.1.0.7000, you can search for it online
or get the 7MB installer here. It always installs easily and works well in
Wine:

pcb123installer.exe (v2.1.0.7000, ~7MB):
https://stanford.box.com/s/69ijfwjf7qc95bq6bh2m

I purposely use this older version of PCB123 because, compared to versions that
came later, it has significantly faster display rendering performance with
complex PCB designs, such as this one, which I made:

PCB123-v2-complex-testfile.123, ~800kB:
https://stanford.box.com/s/3kmfcif91c1e909ak7jc

If you open this *.123 PCB design file and turn the mousewheel to zoom in or
out, it triggers a complete screen redraw. A screen redraw can take from one to
five seconds on sub-optimal software (Windows Vista/7/8, newest Wine), but
should take only a fraction of a second with good software (Windows XP, earlier
Wine).

If the scree re-draw takes too long, you can hide the filled copper planes of
the PCB. This speeds up redraws significantly, but the general issue (rendering
is now slower than it used to be, decreasing productivity) remains:

PCB123-v2-complex-testfile-nofill.123, ~800kB:
https://stanford.box.com/s/08zamniq0gx3imlwhi76

This software was originally released in the Windows XP years. It ran much
worse on Windows 7. It ran super-fast on Wine, regardless of hardware and/or
Linux version, I believe. Over time, I ran this software under Wine on a few
different Linux distros (Fedora, Mint, Ubuntu), and different hardware (older
Thinkpad with slow IGP, newer desktop with GTX660), the results were always
great under Linux+Wine, and much poorer under Windows 7.

Most recently, I had it running smoothly on Ubuntu 12.04 LTS, probably with
Nvidia binary driver 319 and whatever Wine version was up to date.

Then, about three days ago, I let Ubuntu proceed with the upgrade to 14.04 LTS.
Initially, PCB123 worked quickly, but then another set of Ubuntu 14.04 updates
came in, probably including the Nvidia driver update v331. Somehow this
un-installed Wine, and I couldn't re-install it - same issue as described here:

http://askubuntu.com/questions/449507/nvidia-libopencl1-331-has-to-be-removed-before-installing-wine

Following the instructions on that page, I then did this:

sudo apt-get install nvidia-cuda-toolkit #Need to get 250 MB of archives; 774
MB of additional disk space will be used

sudo apt-get install ocl-icd-opencl-dev #this will remove nvidia-libopencl1-*
and nvidia-opencl-dev

sudo apt-get install wine #Need to get 121 MB; 342 MB of additional disk space
will be used.

Then I reinstalled Wine successfully, but then somehow the display performance
of PCB123 got much, much slower. I estimate the screen redraw speed is now at
least 20x to 50x slower than it used to be.

I am now trying to roll back the Nvidia drivers, the Wine versions, and so
forth, to narrow down where the problem lies. No luck so far, PCB123 remains
slow. I may even try to install Ubuntu 12.04 LTS again just to see if this
fixes it. Any advice on how I can force different versions of Wine or relevant
DLLs for testing?

Any tips on how I can support fixing this issue?

Best regards,
Sebastian

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