Struct MaterialSortKey 

pub struct MaterialSortKey(pub u64);

A compact sorting key for materials, used to minimize GPU state changes by batching objects with similar materials together.

Layout (64 bits):

• Bits 63..56: transparency flag (0=opaque, 1=transparent)
• Bits 55..48: material ID
• Bits 47..32: shader program handle (low 16 bits)
• Bits 31..16: albedo texture handle (low 16 bits)
• Bits 15..0: other texture handle (low 16 bits)

Tuple Fields

0: u64

Implementations

impl MaterialSortKey

pub fn new(key: u64) -> Self

pub fn from_material(mat: &PbrMaterial) -> Self

Build a sort key from a PBR material.

pub fn is_transparent(&self) -> bool

Extract the transparency flag.

pub fn material_id(&self) -> u8

Extract the material ID.

Trait Implementations

impl Clone for MaterialSortKey

fn clone(&self) -> MaterialSortKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaterialSortKey

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

Formats the value using the given formatter.

impl Default for MaterialSortKey

fn default() -> Self

Returns the “default value” for a type.

impl Hash for MaterialSortKey

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 Ord for MaterialSortKey

fn cmp(&self, other: &MaterialSortKey) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MaterialSortKey

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for MaterialSortKey

fn partial_cmp(&self, other: &MaterialSortKey) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for MaterialSortKey

impl Eq for MaterialSortKey

impl StructuralPartialEq for MaterialSortKey