[Bug 54068] New: ddraw:ddraw1, ddraw:ddraw2, ddraw:ddraw4, ddraw:ddraw7 - test_cursor_clipping() gets an unexpected clip rect on Windows 10 2004+

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54068

Bug ID: 54068
           Summary: ddraw:ddraw1, ddraw:ddraw2, ddraw:ddraw4, ddraw:ddraw7
                    - test_cursor_clipping() gets an unexpected clip rect
                    on Windows 10 2004+
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: d3d
          Assignee: [e-mail]
          Reporter: [e-mail]

ddraw:ddraw1, ddraw:ddraw2, ddraw:ddraw4, ddraw:ddraw7 - test_cursor_clipping()
gets an unexpected clip rect on Windows 10 2004+:

ddraw1.c:14351: Test failed: Expect clip rect (0,0)-(1920,1080), got
(0,0)-(1536,864).

See https://test.winehq.org/data/patterns.html#ddraw:ddraw1
    https://test.winehq.org/data/patterns.html#ddraw:ddraw2
    https://test.winehq.org/data/patterns.html#ddraw:ddraw4
    https://test.winehq.org/data/patterns.html#ddraw:ddraw7

This failure happens systematically on Windows 10 2004 to 22H2 running on
QEmu's virtual GPU.
However it does not happen on :
* Windows 11.
* Dual-monitor configurations.
* Windows 10 with an AMD RX550 GPU (via PCI passthrough).

[Bug 54068] ddraw:ddraw1, ddraw:ddraw2, ddraw:ddraw4, ddraw:ddraw7 - test_cursor_clipping() gets an unexpected clip rect on Windows 10 2004+

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54068

François Gouget  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |source, testcase

[Bug 54068] ddraw:ddraw1, ddraw:ddraw2, ddraw:ddraw4, ddraw:ddraw7 - test_cursor_clipping() gets an unexpected clip rect on Windows 10 2004+

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54068

Zhiyi Zhang  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from Zhiyi Zhang  ---
Does the system happen to have a 125% display scaling?
1920/1.25 = 1536.0
1080/1.25 = 864.0

[Bug 54068] ddraw:ddraw1, ddraw:ddraw2, ddraw:ddraw4, ddraw:ddraw7 - test_cursor_clipping() gets an unexpected clip rect on Windows 10 2004+

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54068

--- Comment #2 from François Gouget  ---
Created attachment 73856
  --> https://bugs.winehq.org/attachment.cgi?id=73856
w10pro64v2004 display information

The failure happens on w10pro64v2004 (among others), which has the default 100%
scaling as shown in this screenshot. I never changed the scaling in the VMs so
I expect the others test configurations are the same.

Further notes based on w10pro64v2004 tests:
* I get this failure even if I run just ddraw:ddraw1 on its own...
* ... even if I run just test_cursor_clipping().
* After the test the scaling is still 100%.