[Bug 53216] New: d3d11:d3d11 - test_depth_bias() fails in the TestBot VMs

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53216

            Bug ID: 53216
           Summary: d3d11:d3d11 - test_depth_bias() fails in the TestBot
                    VMs
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: wine-bugs at winehq.org
          Reporter: fgouget at codeweavers.com
      Distribution: ---

d3d11:d3d11 - test_depth_bias() fails in the TestBot VMs:

d3d11.c:28093: Test failed: Got depth 4.99374978e-003, expected
4.99999994e-003.
d3d11.c:28093: Test failed: Got depth 4.99374978e-003, expected
4.99999994e-003.
d3d11.c:28093: Test failed: Got depth 2.50997487e-003, expected
2.50999994e-003.
d3d11.c:28093: Test failed: Got depth 7.48750009e-003, expected
7.49999994e-003.
d3d11.c:28093: Test failed: Got depth 7.48750009e-003, expected
7.49999994e-003.
d3d11.c:28093: Test failed: Got depth 2.50997487e-003, expected
2.50999994e-003.
d3d11.c:28093: Test failed: Got depth 1.24749998e-002, expected
1.24999999e-002.
d3d11.c:28093: Test failed: Got depth 1.24749998e-002, expected
1.24999999e-002.
d3d11.c:28093: Test failed: Got depth 2.50997487e-003, expected
2.50999994e-003.
d3d11.c:28093: Test failed: Got depth 6.40899956e-001, expected
6.42500000e-001.
d3d11.c:28093: Test failed: Got depth 6.40899956e-001, expected
6.42500000e-001.
d3d11.c:28093: Test failed: Got depth 2.50997487e-003, expected
2.50999994e-003.
d3d11.c:28093: Test failed: Got depth 2.50997487e-003, expected
2.50999994e-003.
d3d11.c:28093: Test failed: Got depth 2.50997487e-003, expected
2.50999994e-003.
d3d11.c:27965: Test marked todo: Got 0xffffff00, expected 0x00ffffff at (0, 0,
0), sub-resource 0.
d3d11.c:28101: Test failed: Got value 0x14745 (4.99373704e-003), expected
0x147ae (4.99999553e-003).
d3d11.c:28101: Test failed: Got value 0x14745 (4.99373704e-003), expected
0x147ae (4.99999553e-003).
d3d11.c:28101: Test failed: Got value 0x8528f (3.25097461e-002), expected
0x85293 (3.25099845e-002).
d3d11.c:28101: Test failed: Got value 0x1eab3 (7.48747632e-003), expected
0x1eb85 (7.49999329e-003).
d3d11.c:28101: Test failed: Got value 0x1eab3 (7.48747632e-003), expected
0x1eb85 (7.49999329e-003).
d3d11.c:28101: Test failed: Got value 0x8528f (3.25097461e-002), expected
0x85293 (3.25099845e-002).
d3d11.c:28101: Test failed: Got value 0x33190 (1.24750145e-002), expected
0x33333 (1.24999888e-002).
d3d11.c:28101: Test failed: Got value 0x33190 (1.24750145e-002), expected
0x33333 (1.24999888e-002).
d3d11.c:28101: Test failed: Got value 0x8528f (3.25097461e-002), expected
0x85293 (3.25099845e-002).
d3d11.c:28101: Test failed: Got value 0xa41204 (6.40899935e-001), expected
0xa47ae1 (6.42500022e-001).
d3d11.c:28101: Test failed: Got value 0xa41204 (6.40899935e-001), expected
0xa47ae1 (6.42500022e-001).
d3d11.c:28101: Test failed: Got value 0x8528f (3.25097461e-002), expected
0x85293 (3.25099845e-002).
d3d11.c:28101: Test failed: Got value 0x8528f (3.25097461e-002), expected
0x85293 (3.25099845e-002).
d3d11.c:28101: Test failed: Got value 0x8528f (3.25097461e-002), expected
0x85293 (3.25099845e-002).
d3d11.c:28110: Test failed: Got value 0x28e (9.97940032e-003), expected 0x290
(1.00099184e-002).
d3d11.c:28110: Test failed: Got value 0x28e (9.97940032e-003), expected 0x290
(1.00099184e-002).
d3d11.c:28110: Test failed: Got value 0x331 (1.24666209e-002), expected 0x334
(1.25123980e-002).
d3d11.c:28110: Test failed: Got value 0x331 (1.24666209e-002), expected 0x334
(1.25123980e-002).
d3d11.c:28110: Test failed: Got value 0x476 (1.74258030e-002), expected 0x47b
(1.75020981e-002).
d3d11.c:28110: Test failed: Got value 0x476 (1.74258030e-002), expected 0x47b
(1.75020981e-002).
d3d11.c:28110: Test failed: Got value 0xa411 (6.40894179e-001), expected 0xa47a
(6.42496376e-001).
d3d11.c:28110: Test failed: Got value 0xa411 (6.40894179e-001), expected 0xa47a
(6.42496376e-001).

https://test.winehq.org/data/patterns.html#d3d11:d3d11

These failures:
* Don't happen on Debian 11 + Intel / KDE
* Happen on Debian 11 + QXL + single-monitor
* Happen on Debian 11 + QXL + multi-monitor
* Don't happen on Debian Testing + QXL + multi-monitor

So they are probably caused by some bug in the Debian 11 QXL support.

Note that despite being systematic these failures could cause false positives
due to the test multi-threading (see bug 53212).

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