Struct DeviceCapabilities 

pub struct DeviceCapabilities {
    base_vertex: bool,
}

The downlevel capabilities a frame is recorded against.

See the module documentation for why this is captured rather than read from the device.

Fields

base_vertex: bool

Whether an indexed draw may offset its indices by a non-zero base_vertex.

Implementations

impl DeviceCapabilities

pub const WEBGPU: Self

Everything the WebGPU baseline requires.

What a device assumed rather than asked about gets: the built-in pipeline then takes its fastest path, which is the only path a full-featured device needs.

pub const WEBGL2: Self

What a WebGL2 device has.

WebGL2 is GLES 3.0, and base_vertex needs GLES 3.2, so an indexed draw there must keep base_vertex at zero.

pub fn from_adapter(adapter: &Adapter) -> Self

Read the capabilities of adapter.

pub fn base_vertex(&self) -> bool

Whether an indexed draw may offset its indices by a non-zero base_vertex.

Where this is missing, a mesh cannot name its vertices through the draw’s base_vertex — the backend would have to call a GL entry point that does not exist — so its indices are offset at upload instead. The mesh source is what decides which of the two a mesh’s indices get; the addressing the draw then reads is the metadata entry’s vertex_offset.

Trait Implementations

impl Clone for DeviceCapabilities

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 DeviceCapabilities

impl Debug for DeviceCapabilities

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

Formats the value using the given formatter.

impl Default for DeviceCapabilities

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DeviceCapabilities

impl PartialEq for DeviceCapabilities

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DeviceCapabilities