Anti-aliasing of rounded corners is broken on light themes

[evgenyz]

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• Completed

Describe the bug / provide steps to reproduce it

It seems that the decorations are incorrectly blended into the theme's color instead of shadows.

Zed Version and System Specs

Zed: v0.168.2 (Zed)
OS: Linux Wayland fedora 40
Memory: 31 GiB
Architecture: x86_64
GPU: Intel(R) Xe Graphics (TGL GT2) || Intel open-source Mesa driver || Mesa 24.1.7

If applicable, add screenshots or screencasts of the incorrect state / behavior

If applicable, attach your Zed.log file to this issue.

Zed.log

2025-01-11T15:39:58.542192192+01:00 [INFO] ========== starting zed ==========
2025-01-11T15:39:58.614585464+01:00 [INFO] Presentation support: "VK_KHR_wayland_surface"
2025-01-11T15:39:58.614656042+01:00 [INFO] Presentation support: "VK_KHR_xcb_surface"
2025-01-11T15:39:58.614692944+01:00 [INFO] Presentation support: "VK_KHR_xlib_surface"
2025-01-11T15:39:58.61473686+01:00 [INFO] Enabling Vulkan Portability
2025-01-11T15:39:58.614770355+01:00 [INFO] Enabling color space support
2025-01-11T15:39:58.622691227+01:00 [INFO] Adapter: "Intel(R) Xe Graphics (TGL GT2)"
2025-01-11T15:39:58.622782847+01:00 [INFO] No ray tracing extensions are supported
2025-01-11T15:39:58.624704476+01:00 [INFO] perform;
2025-01-11T15:39:58.624755598+01:00 [INFO] authenticate;
2025-01-11T15:39:58.624794279+01:00 [INFO] Opening main db
2025-01-11T15:39:58.624850656+01:00 [INFO] read_command;
2025-01-11T15:39:58.624899264+01:00 [INFO] send_secondary_commands;
2025-01-11T15:39:58.6251263+01:00 [INFO] new;
2025-01-11T15:39:58.625228118+01:00 [INFO] socket reader;
2025-01-11T15:39:58.625576574+01:00 [INFO] Opening main db
2025-01-11T15:39:58.625635684+01:00 [INFO] keep_updated;
2025-01-11T15:39:58.627393493+01:00 [INFO] Using git binary path: None
2025-01-11T15:39:58.657892022+01:00 [INFO] No prompt template overrides directory found at /home/ekolesni/.local/share/zed/prompt_overrides. Using built-in prompts.
2025-01-11T15:39:58.658326335+01:00 [INFO] No prompt template overrides directory found at /home/ekolesni/.local/share/zed/prompt_overrides. Using built-in prompts.
2025-01-11T15:39:58.65868524+01:00 [INFO] extensions updated. loading 2, reloading 0, unloading 0
2025-01-11T15:39:58.660172129+01:00 [INFO] activate is not implemented on Linux, ignoring the call
2025-01-11T15:39:58.661033352+01:00 [INFO] Opening main db
2025-01-11T15:39:58.661549221+01:00 [INFO] perform;
2025-01-11T15:39:58.661595193+01:00 [INFO] authenticate;
2025-01-11T15:39:58.661645489+01:00 [INFO] read_command;
2025-01-11T15:39:58.662092058+01:00 [INFO] socket reader;
2025-01-11T15:39:58.665463549+01:00 [WARN] Failed to watch: No such file or directory (os error 2) about ["/home/ekolesni/.config/github-copilot"]
2025-01-11T15:39:58.667479954+01:00 [INFO] building git repository, `.git` path in the worktree: ".git"
2025-01-11T15:39:58.667771992+01:00 [ERROR] Error { code: -9, klass: 4, message: "reference 'refs/heads/master' not found" }
2025-01-11T15:39:58.708474869+01:00 [INFO] Using surface present mode MAILBOX
2025-01-11T15:39:58.712407302+01:00 [INFO] set environment variables from shell:/bin/bash, path:/home/ekolesni/.cargo/bin:/home/ekolesni/.local/bin:/home/ekolesni/bin:/usr/lib64/ccache:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin
2025-01-11T15:39:58.718757589+01:00 [INFO] Creating a descriptor pool for at most 16 sets
2025-01-11T15:39:58.718952436+01:00 [INFO] Creating a descriptor pool for at most 16 sets
2025-01-11T15:39:58.719738505+01:00 [INFO] Initializing Blade pipelines for surface SurfaceInfo { format: Bgra8UnormSrgb, alpha: PreMultiplied }
2025-01-11T15:39:58.727284341+01:00 [INFO] Using GPU: GpuSpecs { is_software_emulated: false, device_name: "Intel(R) Xe Graphics (TGL GT2)", driver_name: "Intel open-source Mesa driver", driver_info: "Mesa 24.1.7" }
2025-01-11T15:39:58.732832342+01:00 [INFO] Opening main db
2025-01-11T15:39:58.737367506+01:00 [INFO] Opening main db
2025-01-11T15:39:58.885514111+01:00 [INFO] Using surface present mode MAILBOX
2025-01-11T15:39:58.885575298+01:00 [INFO] Retaining current format: Bgra8UnormSrgb
2025-01-11T15:39:58.893077196+01:00 [INFO] using project environment variables shell launched in "/home/ekolesni/Devel/ds.xml". PATH="/home/ekolesni/.cargo/bin:/home/ekolesni/.local/bin:/home/ekolesni/bin:/usr/lib64/ccache:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin"
2025-01-11T15:39:58.91879899+01:00 [INFO] attempting to start language server "rust-analyzer", path: "/home/ekolesni/Devel/xxx", id: 1
2025-01-11T15:39:58.954576076+01:00 [INFO] using project environment variables shell launched in "/home/ekolesni/Devel/xxx". PATH="/home/ekolesni/.cargo/bin:/home/ekolesni/.local/bin:/home/ekolesni/bin:/usr/lib64/ccache:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin"
2025-01-11T15:39:58.954723767+01:00 [INFO] found rust-analyzer in PATH. trying to run `rust-analyzer --help`
2025-01-11T15:39:59.385760839+01:00 [ERROR] failed to run rust-analyzer after detecting it in PATH: binary: "/home/ekolesni/.cargo/bin/rust-analyzer": exit status: 1, stdout: "", stderr: "error: Unknown binary 'rust-analyzer' in official toolchain 'stable-x86_64-unknown-linux-gnu'.\n"
2025-01-11T15:39:59.38590473+01:00 [INFO] fetching latest version of language server "rust-analyzer"
2025-01-11T15:40:00.213121647+01:00 [INFO] downloading language server "rust-analyzer"
2025-01-11T15:40:00.220410532+01:00 [INFO] starting language server process. binary path: "/home/ekolesni/.local/share/zed/languages/rust-analyzer/rust-analyzer-2025-01-08", working directory: "/home/ekolesni/Devel/xxx", args: []