Enum BaseColorChannels 

pub enum BaseColorChannels {
    Rgba,
    Luminance,
    LuminanceAlpha,
}

How a sampled base-color texel expands into the fragment’s color.

Variants

Rgba

The texel is a color in all four channels.

Luminance

The texel is luminance: one channel, expanded into every color channel.

The sampled value is decoded from sRGB on the way, because a one-channel image cannot be uploaded in an sRGB format: WebGPU offers the transfer function only for the four-channel Rgba8UnormSrgb and Bgra8UnormSrgb, so a luminance texture carries the encoded value and the shader decodes it.

LuminanceAlpha

The texel is luminance and alpha: two channels holding l and a, sampled into the color and the alpha channel.

The luminance half decodes from sRGB exactly as Self::Luminance does; alpha is coverage, so it never converts.

Trait Implementations

impl Clone for BaseColorChannels

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 BaseColorChannels

impl Debug for BaseColorChannels

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

Formats the value using the given formatter.

impl Default for BaseColorChannels

fn default() -> Self

Returns the “default value” for a type.

impl Eq for BaseColorChannels

impl Hash for BaseColorChannels

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for BaseColorChannels

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BaseColorChannels