Enum BackendPreference 

pub enum BackendPreference {
    Cpu,
    PreferGpu,
    RequireGpu,
}

Which backend SceneRenderer::try_new should build (QE.7b — replaces RenderOptions.want_gpu: bool, which couldn’t express “GPU or fail”: headless CI rigs and benchmarks silently fell back to a software render and measured the wrong thing).

Variants

Cpu

The CPU renderer, unconditionally (the pre-QE.7 want_gpu: false). The default.

PreferGpu

Try the GPU; fall back to CPU with a logged warn when WGPU init fails (the pre-QE.7 want_gpu: true).

RequireGpu

GPU or RenderError::GpuInit — no silent software fallback. (The wasm constructor has no Result channel and treats this as PreferGpu.)

Trait Implementations

impl Clone for BackendPreference

fn clone(&self) -> BackendPreference

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BackendPreference

impl Debug for BackendPreference

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

Formats the value using the given formatter.

impl Default for BackendPreference

fn default() -> BackendPreference

Returns the “default value” for a type.

impl Eq for BackendPreference

impl PartialEq for BackendPreference

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BackendPreference