[CS2] Moderate to severe rendering issues on Intel Arc A770

[FuzzyQuils]

Your system information

``` Computer Information: Manufacturer: ASUSTeK COMPUTER INC. Model: TUF B450M-PLUS GAMING Form Factor: Desktop No Touch Input Detected Processor Information: CPU Vendor: AuthenticAMD CPU Brand: AMD Ryzen 7 3700X 8-Core Processor CPU Family: 0x17 CPU Model: 0x71 CPU Stepping: 0x0 CPU Type: 0x0 Speed: 4426 MHz 16 logical processors 8 physical processors Hyper-threading: Supported FCMOV: Supported SSE2: Supported SSE3: Supported SSSE3: Supported SSE4a: Supported SSE41: Supported SSE42: Supported AES: Supported AVX: Supported AVX2: Supported AVX512F: Unsupported AVX512PF: Unsupported AVX512ER: Unsupported AVX512CD: Unsupported AVX512VNNI: Unsupported SHA: Supported CMPXCHG16B: Supported LAHF/SAHF: Supported PrefetchW: Unsupported Operating System Version: "Arch Linux" (64 bit) Kernel Name: Linux Kernel Version: 6.4.6-rt8-273-tkg-eevdf X Server Vendor: The X.Org Foundation X Server Release: 12101008 X Window Manager: Mutter(Budgie) Steam Runtime Version: steam-runtime_0.20230801.56012 Video Card: Driver: Intel Mesa Intel(R) Arc(tm) A770 Graphics (DG2) Driver Version: 4.6 (Compatibility Profile) Mesa 23.3.0-devel (git-a2641ddf0d) OpenGL Version: 4.6 Desktop Color Depth: 24 bits per pixel Monitor Refresh Rate: 120 Hz VendorID: 0x8086 DeviceID: 0x56a0 Revision Not Detected Number of Monitors: 1 Number of Logical Video Cards: 1 Primary Display Resolution: 1920 x 1080 Desktop Resolution: 1920 x 1080 Primary Display Size: 20.75" x 11.65" (23.78" diag), 52.7cm x 29.6cm (60.4cm diag) Primary VRAM Not Detected Sound card: Audio device: USB Mixer Memory: RAM: 15906 Mb VR Hardware: VR Headset: None detected Miscellaneous: UI Language: English LANG: en_US.UTF-8 Total Hard Disk Space Available: 856927 MB Largest Free Hard Disk Block: 64387 MB Storage: Number of SSDs: 4 SSD sizes: 2000G,1000G,1000G,0B Number of HDDs: 0 Number of removable drives: 0 ```

• Have you checked for system updates?: Yes. (pacman -Syu was run recently)

Please describe your issue in as much detail as possible:

In normal CS2 gameplay, there are number of issues with map geometry and prop rendering with Intel Arc graphics cards (only Dust II tested):

• The Skybox mesh sometimes partially appears under the player's view near CT spawn. (Getting close to the map's origin seems to trigger it?)
• At Bomb Site B, getting within a certain distance of the walls will result in certain geometry rendering black. Other parts of the map exhibit this bug too but Bomb Site B is the most obvious example.
• Particle effects that are part of the map either don't render at all or render with low resolution noise.
• Getting close to walls has z-fighting at the closest polygons to the camera.
• Shadow cascades reveal shadow acne near the edges of where one cascade ends and the next starts.
• In general due to the above, the entire map itself tends to flicker terribly at higher graphics settings levels while moving around.

Character models don't seem affected at all, and the menus appear to also render correctly. Using MSAA and model detail levels higher than low exacerbate the issues.

(Screenshots below show instances of issue 1 and issue 2)

Steps for reproducing this issue:

1. Launch Counter Strike 2 with an Intel Arc A770 installed in the machine.
2. Observe LOD, shadow and particle effects artifacts.

Potentially related mesa bug report regarding Dota 2, which also uses Source 2: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9899

[kisak-valve]

Hello @FuzzyQuills, can you test how the game behaves with a current point release of mesa instead of mesa git main?

[FuzzyQuils]

Hello @FuzzyQuills, can you test how the game behaves with a current point release of mesa instead of mesa git main?

Can do once I have the card in my machine again. Should be able to tomorrow. I believe Arch Repos are using 23.2.1

[FuzzyQuils]

Hello @FuzzyQuills, can you test how the game behaves with a current point release of mesa instead of mesa git main?

I've tested on Mesa 23.2.1 and the game renders correctly with the exception of dust particles still looking noisy. I'll comment in the mesa issue as this looks like an upstream regression.

[FuzzyQuils]

Accidentally closed the issue, reopening.

Of note is the noise towards the top of the buildings, this doesn't appear on RADV. Map rendering otherwise works on stable mesa. This same noise shows up on the clouds of dust around the map.

[SopaDeMacaco-UmaDelicia]

Intel Arc A770 Mesa-git KDE Wayland The game still has a lot of artifacts (flickering lighting on the objects and no AA) and a heavy fps impact when using MSAA. Without it occasional black actifacts pop out here and there but it's playable.