SOMA: Cannot open drawers or kitchen cabinets in the starting room

[kuruczgy]

What Game
SOMA
https://store.steampowered.com/app/282140/SOMA/

Describe the bug
Cannot open drawers or kitchen cabinets in the starting room.

To Reproduce
Steps to reproduce the behavior:

1. Start a new game. (Wait for a few minutes until the cutscenes are over and you wake up in the starting room.)
2. Put your crosshair over a drawer or a kitchen cabinet in the room, and try to drag it by holding down the left mouse button.
3. Observe that the hand symbol that should appear when hovering is missing, and the dragging does not work.

Expected behavior
You can open drawers and kitchen cabinet doors.

Screenshots and Video
This is how it's supposed to work: https://youtu.be/FD0h-s6NUeM?t=311

System information:

• OS: NixOS unstable
• CPU/SoC: Snapdragon X Elite (X1E80100)
• Video driver version: Mesa 25.0.0-devel (commit a2339542f5d71b1c60febff78fb5dbad7ceb9191)
• RootFS used: none (I use bubblewrap instead)
• FEX version: 2412 (+ this patch: https://github.com/kuruczgy/nixos-aarch64-gaming/blob/6a8acdb69f2963a3f5f998f3a65c8520dfffa6b8/packages/fex-emu-shebang-absolute-path-fix.patch )
• Thunks Enabled: No

See this commit for the nix expressions for the bwrap based chroot: https://github.com/kuruczgy/nixos-aarch64-gaming/tree/a747c19f80f64ce566f315ac5c93d1b9345c13d4

Additional context

• Is this an x86 or x86-64 game: Unknown
• Does this reproduce on AArch64 with Radeon/Intel/Nvidia: Untested
• Is this a Vulkan game: Unknown

[Sonicadvance1]

Reproduced this. I don't recall this being a problem a couple years ago, so smells like a regression.
I'll need to tinker with it to see if I can find how they are doing their raycasting to find interactable objects to determine the cause.

[kuruczgy]

I wanted to bisect this, the issue is already present in 2402, but anything before that wouldn't launch steam for me. (I also cherry-picked #4160, but no luck.)

Do you have any better idea for finding the raycasting function than static analysis (e.g. throwing it in ghidra)? Is there any tooling that could analyze the difference in dynamic behavior between a frame where a ray hit is found and one where it isn't? (E.g. if we could find a branch that differs between hit/no-hit frames that could narrow it down a lot.)

[Sonicadvance1]

Fixed by #4237