[Bug 39774] New: Desktop "Holiday Lights" app doesn't show lights on OS X

https://bugs.winehq.org/show_bug.cgi?id=39774

Bug ID: 39774
           Summary: Desktop "Holiday Lights" app doesn't show lights on OS
                    X
           Product: Wine
           Version: 1.8-rc3
          Hardware: x86
                OS: Mac OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]

Created attachment 53062
  --> https://bugs.winehq.org/attachment.cgi?id=53062
Section of screen showing bug

A continuation of report https://bugs.winehq.org/show_bug.cgi?id=39758, with
link to EXE file in that bug report.

In Holiday Lights, lights are not showing on OS X at all, regardless of which
options are set. However, in the app's screensaver mode, the lights are
visible. section of screen is attached.

[Bug 39774] Desktop "Holiday Lights" app doesn't show lights on OS X

https://bugs.winehq.org/show_bug.cgi?id=39774

--- Comment #1 from [e-mail] ---
Created attachment 53063
  --> https://bugs.winehq.org/attachment.cgi?id=53063
Screensaver Mode

[Bug 39774] Desktop "Holiday Lights" app doesn't show lights on OS X

https://bugs.winehq.org/show_bug.cgi?id=39774

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |download
                URL|                            |http://xmasfun.com/Download
                   |                            |s/LIGHTS95.exe
                 CC|                            |[e-mail]
          Component|-unknown                    |winemac.drv

--- Comment #2 from Austin English  ---
> From the other bug:

Program starts, but lights still don't show. They do show when in X11 mode and
virtual desktop activated! They won't show up with the winemac driver. Is that
worthy of another bug report?

[Bug 39774] Desktop "Holiday Lights" app doesn't show lights on OS X

https://bugs.winehq.org/show_bug.cgi?id=39774

Ken Thomases  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #3 from Ken Thomases  ---
Unfortunately, there's not going to be any quick fix for this.  It may never be
fixed.

The program draws directly to the desktop window.  That's not currently
supported on the Mac, either with the Mac driver or X11 driver (except with
virtual desktop mode, where Wine's desktop is different from the Mac desktop).

It's not clear exactly how I _could_ support it.  Mac apps are not allowed to
draw directly to the desktop.  I could perhaps fake it with a transparent
overlay window, but it's not obvious how to know what parts of the window
should be transparent.

I could maybe use some color-keying approach.  I think the app reads the
current bitmap of the desktop, draws on top of that, and then blits that
modified bitmap to the desktop.  If I made the read operation produce some
bogus solid color (e.g. magenta) and then treated any pixels that remain
magenta after the app draws to it as transparent, that might work.  On the
other hand, this app seems like one that might actually use magenta in its
drawing.  Also that approach would conflict with apps which read the desktop
and expect to get its actual contents (like a screenshot feature), should I
ever actually implement support for that in the Mac driver.