This is the current proton thread priority implementation by @rbernon rebased for upstream with a few `#ifdef`s added since AFAIK Linux is the only operating system where threads have a unique PID which can be used to set niceness on.
~~I also ran `./tools/make_requests` on https://gitlab.winehq.org/mzent/wine/-/commit/6705d3481be0409f7e971c1d2c7a3… as well and `autoconf` on https://gitlab.winehq.org/mzent/wine/-/commit/d7bafe40c411753662b2ad97148a6… (which does blow up the line count a bit).~~
A few tiny changes ~~(with the ready variable for example)~~ are in anticipation for Part 2, which also adds Mach thread priorities and recalculates thread priorities on process priority change.
Since this is a rather large MR, I hope the split here is appropriate ~~(with the second part being slightly smaller)~~, but I think logically it makes the most sense here.
--
v13: server: Check wineserver privileges on init with -20 niceness.
server: Use setpriority to update thread niceness when safe.
ntdll: Set RLIMIT_NICE to its hard limit.
server: Introduce new set_thread_priority helper.
https://gitlab.winehq.org/wine/wine/-/merge_requests/4551
--
v3: mfreadwrite/reader: Implement IMFSourceReaderEx_GetTransformForStream.
mfreadwrite/reader: Create and append a converter transform.
mfreadwrite/reader: Keep the stream transforms in a list.
mfreadwrite/reader: Call SetOutputType directly on the decoder transform.
mf/topology_loader: Only propagate some media type attributes.
mfreadwrite/reader: Split source_reader_create_decoder_for_stream helper.
https://gitlab.winehq.org/wine/wine/-/merge_requests/5120
Yakuza 6's Puyo Puyo minigame creates a texture from a DDS file that is the equivalent format of `DXGI_FORMAT_B4G4R4A4_UNORM`, which windowscodecs does not support.
This patch converts the texture into the equivalent of `DXGI_FORMAT_R8G8B8A8_UNORM` DDS file at the start of `load_texture_data()`, which allows us to avoid having an entirely separate code path for this specific image type. This current patch just handles the most basic of DDS files, if this approach seems reasonable I will flesh it out more, I just wanted to see if it was a good/bad idea before putting anymore work into it. :)
--
https://gitlab.winehq.org/wine/wine/-/merge_requests/5022
Test module references created by resolving forwarded exports.
The following diagram explains what happens in bug #52094 under the hood:
```mermaid
graph TB
subgraph state_00["Initial"]
direction LR
s00_ida[ida64.dll] ~~~ s00_idapy[idapython64.dll] -. "(import)" .-> s00_py3[python3.dll] -. "(forwards to)" .-> s00_py311[python311.dll]
end
state_00 -. "1. <strong><code><span style='color:#28f'>Load</span>Library("</code></strong>configured Python version (e.g., python311.dll)<strong><code>")</code></strong>" .-> state_01
subgraph state_01["python311.dll loaded"]
direction LR
s01_ida[ida64.dll] ~~~ s01_idapy[idapython64.dll] -. "(import)" .-> s01_py3[python3.dll] -. "(forwards to)" .-> s01_py311[python311.dll]
s01_ida -- "<em>dynamic</em> ref" --> s01_py311
end
state_01 -. "2. <strong><code><span style='color:#28f'>Load</span>Library("</code></strong>idapython64.dll<strong><code>")</code></strong>" .-> state_02
subgraph state_02["idapython64.dll loaded"]
direction LR
s02_ida[ida64.dll] -- "<em>dynamic</em> ref" --> s02_idapy[idapython64.dll] -- "<em><strong>static</strong></em> ref" --> s02_py3[python3.dll] -. "(forwards to)" .-> s02_py311[python311.dll]
s02_ida -- "<em>dynamic</em> ref" --> s02_py311
s02_idapy -- "<span style='color:red'><em><strong>static forwarded</strong></em> ref</span>" --> s02_py311
end
state_02 -. "3. <strong><code><span style='color:#d70'>Free</span>Library("</code></strong>configured Python version (e.g., python311.dll)<strong><code>")</code></strong>" .-> state_03
subgraph state_03["python311.dll reference removed"]
direction LR
style s03_py311 color:#f00,stroke:#f00
s03_ida[ida64.dll] -- "<em>dynamic</em> ref" --> s03_idapy[idapython64.dll] -- "<em><strong>static</strong></em> ref" --> s03_py3[python3.dll] -. "(forwards to)" .-> s03_py311[python311.dll]
s03_ida -. "<del><em>dynamic</em> ref (deleted)</del>" .-> s03_py311
s03_idapy -- "<span style='color:red'><em><strong>static forwarded</strong></em> ref</span>" --> s03_py311
end
```
On Windows, the <em><strong>static forwarded</strong></em> ref keeps `python311.dll` from being unloaded; however, Wine is missing this behavior, causing it to be unloaded and segfault immediately (since further initialization happens just after step 3 FreeLibrary). The tests aim to reproduce this condition.
---
### Alternative options
1. Find existing DLLs satisfying this scenario: I haven't found any in wine tree. Let me know if I missed anything.
2. Construct PE for the DLLs on-the-fly: This sounds more complicated than a handful of test DLLs.
--
v6: kernel32/tests: Test module refcounting with forwarded exports.
https://gitlab.winehq.org/wine/wine/-/merge_requests/364
Add support for NV12 to ``evr_render()``, as otherwise no video is rendered
at all in games like Age of Empires II DE (see: https://github.com/ValveSoftware/Proton/issues/3189#issuecomment-1962984985)
Interestingly, this doesn't result in NV12 data being passed to ``evr_copy_sample_buffer()`` as I suspected, so the RGB32 copying code seems to work fine.
Nevertheless, add a warning if we get an unknown format in ``evr_copy_sample_buffer()``, as that could potentially lead to nasty memory
issues (e.g., if we get the width/lines/stride wrong).
I confess, I don't really understand what's going on here: the format of the video is definitely ``MFVideoFormat_NV12`` in ``evr_render()``, but I never see any attempt to use NV12 in ``evr_copy_sample_buffer()`` — it's always ``MFVideoFormat_RGB32``. For that reason, I've also not tried to write any tests here — I don't know the MF API well enough to plumb this all the way through. On the bright side, though, the fact that everything mysteriously ends up as RGB32 means I haven't had to write an NV12 codepath for ``evr_copy_sample_buffer()`` — I'm not sure exactly how to handle the multi-plane formats there.
--
v4: evr/dshow: Support NV12 in evr_render
https://gitlab.winehq.org/wine/wine/-/merge_requests/5157