Japanese adult Pixel Game Maker game fails to compile shader

Describe the issue

Originally reported as wine bug 57018

Running the game in wine leads to a whitescreen. I managed to get an apitrace on windows, and while that plays back fine on windows, it fails on Linux using mesa. It replays fine on Linux using the proprietary AMD driver (progl)

Issue persists with mesa-git 97f6a296

Error message is 751367: message: major shader compiler error 10: 0:32(15): error: could not implicitly convert operands to arithmetic operator

Log files as attachment

Replacement shader that makes it work when applied using MESA_SHADER_READ_PATH: FS_cb525c0ac0aaa22c22f86d3e1d3a1d49726932ca.glsl

All I did was changing texColor *= (1 - Intensity); to texColor *= (1.0 - Intensity);

Apitrace (NSFW!): gear_libterators.trace

System information

System:
  Host: arch Kernel: 6.10.2-arch1-1 arch: x86_64 bits: 64 compiler: gcc
    v: 14.1.1
  Desktop: KDE Plasma v: 6.1.3 tk: Qt v: N/A wm: kwin_wayland dm: SDDM
    Distro: Arch Linux
CPU:
  Info: 8-core model: AMD Ryzen 7 3800X bits: 64 type: MT MCP arch: Zen 2
    rev: 0 cache: L1: 512 KiB L2: 4 MiB L3: 32 MiB
  Speed (MHz): avg: 2631 high: 3798 min/max: 2200/4559 boost: enabled cores:
    1: 3712 2: 2128 3: 3798 4: 2057 5: 2056 6: 2026 7: 2400 8: 2200 9: 3230
    10: 2058 11: 3622 12: 2627 13: 2058 14: 2144 15: 2399 16: 3594
    bogomips: 124863
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT]
    vendor: Sapphire driver: amdgpu v: kernel arch: RDNA-1 pcie: speed: 16 GT/s
    lanes: 16 ports: active: DP-1,DP-2 empty: DP-3,HDMI-A-1 bus-ID: 28:00.0
    chip-ID: 1002:731f
  Device-2: Sunplus Innovation FHD Camera Microphone
    driver: snd-usb-audio,uvcvideo type: USB rev: 2.0 speed: 480 Mb/s lanes: 1
    bus-ID: 1-2.4:7 chip-ID: 1bcf:28c4
  Display: wayland server: X.org v: 1.21.1.13 with: Xwayland v: 24.1.1
    compositor: kwin_wayland driver: X: loaded: amdgpu dri: radeonsi gpu: amdgpu
    d-rect: 5120x1440 display-ID: 0
  Monitor-1: DP-1 pos: right res: 2560x1440 size: N/A
  Monitor-2: DP-2 pos: primary,left res: 2560x1440 size: N/A
  API: EGL v: 1.5 platforms: device: 0 drv: radeonsi device: 1 drv: swrast
    surfaceless: drv: radeonsi wayland: drv: radeonsi x11: drv: radeonsi
    inactive: gbm
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 24.1.4-arch1.2
    glx-v: 1.4 direct-render: yes renderer: AMD Radeon RX 5700 (radeonsi navi10
    LLVM 18.1.8 DRM 3.57 6.10.2-arch1-1) device-ID: 1002:731f display-ID: :1.0
  API: Vulkan v: 1.3.279 surfaces: xcb,xlib,wayland device: 0
    type: discrete-gpu driver: mesa radv device-ID: 1002:731f