Enum GpuUnavailable 

pub enum GpuUnavailable {
    NoAdapter(String),
    NoDevice(String),
}

Why we could not get a GPU on this machine.

This is a plain “no usable GPU” signal, not a rich diagnostic — callers that see it should stop trying the GPU and take the CPU path (that is exactly what crate::Executor does). The two ways it happens map to the two async wgpu steps that can fail with no hardware behind them.

Variants

NoAdapter(String)

wgpu found no adapter matching our request — i.e. no GPU (or no driver wgpu can talk to) is present at all. On Termux this is the common “no Vulkan ICD installed / immature Mali driver” case. String because wgpu’s own RequestAdapterError is not 'static-friendly to store; we keep its message for the log, not for matching on.

NoDevice(String)

An adapter existed but opening a logical device on it failed (driver in a bad state, limits we asked for unsupported, and so on).

Trait Implementations

impl Debug for GpuUnavailable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for GpuUnavailable

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for GpuUnavailable

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.