Crash when call zlaunch show

[naurissteins]

Crashing on VM and real hardvare, both running Arch Linux and installed zlaunch-bin.
AMD CPU and GPU

PC

 INFO RPC{rpc.trace_id=00 rpc.deadline=2026-02-17T09:30:47.037578214Z otel.kind="server" otel.name="ZlaunchService.show"}: CompleteRequest
 INFO RPC{rpc.trace_id=00 rpc.deadline=2026-02-17T09:30:47.037578214Z otel.kind="server" otel.name="ZlaunchService.show"}: BufferResponse
 INFO RPC{rpc.trace_id=00 rpc.deadline=2026-02-17T09:30:47.037578214Z otel.kind="server" otel.name="ZlaunchService.show"}: SendResponse
DEBUG configuring surface with SurfaceConfiguration { usage: TextureUsages(RENDER_ATTACHMENT), format: Bgra8Unorm, width: 5704, height: 4344, present_mode: Fifo, desired_maximum_frame_latency: 2, alpha_mode: PreMultiplied, view_formats: [] }
DEBUG configuring surface with SurfaceConfiguration { usage: TextureUsages(RENDER_ATTACHMENT), format: Bgra8Unorm, width: 8556, height: 6516, present_mode: Fifo, desired_maximum_frame_latency: 2, alpha_mode: PreMultiplied, view_formats: [] }
ERROR Handling wgpu errors as fatal by default

thread 'main' (214416) panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-28.0.0/src/backend/wgpu_core.rs:3865:18:
wgpu error: Validation Error

Caused by:
  In Surface::configure
    `Surface` width and height must be within the maximum supported texture size. Requested was (8556, 6516), maximum extent for either dimension is 8192.


note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

VM

thread 'main' (3878) panicked at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/wgpu-hal-28.0.0/src/gles/egl.rs:308:14:
called `Result::unwrap()` on an `Err` value: BadDisplay
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 INFO RPC{rpc.trace_id=00 rpc.deadline=2026-02-17T09:21:47.095031912Z otel.kind="server" otel.name="ZlaunchService.show"}: CompleteRequest
 INFO RPC{rpc.trace_id=00 rpc.deadline=2026-02-17T09:21:47.095031912Z otel.kind="server" otel.name="ZlaunchService.show"}: BufferResponse
 INFO RPC{rpc.trace_id=00 rpc.deadline=2026-02-17T09:21:47.095031912Z otel.kind="server" otel.name="ZlaunchService.show"}: SendResponse

[zortax]

Can you set the window size to something smaller than 8192 on both dimensions (I recommend just using your largest display's logical size for lower VRAM usage)?
e.g. in ~/.config/zlaunch.toml:

window_size = [1920.0, 1080.0]

Or alternatively just disable the window backdrop:

enable_backdrop = false

The default size was bigger than the max texture size for the new wgpu renderer. I will push a release that limits the size to something that doesn't crash.

[naurissteins]

Thanks!

enable_backdrop = false was already to set in my configs. I also played with window_size but it didn't solve the issue either.

[zortax]

Is that just in the VM though? It looks like wgpu is using the GLES backend which apparently has some issues on Wayland. Do you have vulkan available?

[naurissteins]

You're right, vulkan ware missing. My apologies.
enable_backdrop = false solved my previous issue.