Enum DevicePreference 

pub enum DevicePreference {
    Auto,
    Software,
    Index(usize),
}

Which physical device to use.

Variants

Auto

Prefer discrete, then integrated, then anything else.

Software

Prefer a software rasterizer.

The deterministic reference used for golden comparison: a CPU device produces the same pixels everywhere, which is what makes it usable as the oracle other backends are diffed against.

Index(usize)

A specific index into the enumeration order.

Trait Implementations

impl Clone for DevicePreference

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DevicePreference

impl Debug for DevicePreference

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

Formats the value using the given formatter.

impl Default for DevicePreference

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DevicePreference

impl PartialEq for DevicePreference

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DevicePreference