Changes

• Added enums for GpuInfo.backend and GpuInfo.device_type fields to reflect options supported by wgpu crate
• Marked GpuInfo.driver and GpuInfo.driver_info fields as optional

Source(s)

GpuInfo is a trimmed-down lua conversion of the wgpu::AdapterInfo struct.

The enum fields of the struct, backend and device_type are defined as follows:

#[repr(u8)]
pub enum Backend {
    Noop = 0,
    Vulkan = 1,
    Metal = 2,
    Dx12 = 3,
    Gl = 4,
    BrowserWebGpu = 5,
}

#[repr(u8)]
pub enum DeviceType {
    Other = 0,
    IntegratedGpu = 1,
    DiscreteGpu = 2,
    VirtualGpu = 3,
    Cpu = 4,
}

In the new enums GpuInfo.Backend and GpuInfo.DeviceType, I've omitted a few fields that wgpu accepts, but WezTerm never uses.

• Backend::Noop - a dummy backend for dev/testing purposes (ref)
• Backend::BrowserWebGpu - when using WebGPU in the browser
• DeviceType::VirtualGpu - for virtual/hosted gpus (ref)

And marked driver and driver_info fields as optional, as they may be nil if those fields contain an empty string in the original wgpu::AdapterInfo struct.

https://github.com/wezterm/wezterm/blob/577474d89ee61aef4a48145cdec82a638d874751/wezterm-gui/src/termwindow/webgpu.rs#L171-L189