Enum ConstantType 

pub enum ConstantType {
    Scalar(ScalarType),
    Vector(Value),
    Matrix {
        scalar: ScalarType,
        rows: u8,
        columns: u8,
        major: Majorness,
        stride: u32,
    },
    Array {
        element: Box<ConstantType>,
        count: u32,
        stride: u32,
    },
    Struct {
        members: Vec<Member>,
    },
}

The type of one constant, with the layout it has in its buffer written out: vectors are tightly packed lanes, every matrix line and array element sits at a stated stride, whatever packing rules (D3D, std140, std430, DX9 registers) put it there.

Variants

Scalar(ScalarType)

A single value.

Vector(Value)

Consecutive lanes of one scalar type with no padding between them.

Matrix

rows by columns of scalar. The matrix is stored as lines (rows for Majorness::Row, columns for Majorness::Column), stride bytes apart; each line’s lanes are consecutive.

Fields

scalar: ScalarType

The scalar type of every lane.

rows: u8

Number of rows.

columns: u8

Number of columns.

major: Majorness

Whether the stored lines are the rows or the columns.

stride: u32

Bytes from the start of one stored line to the start of the next.

Array

A run of equal elements.

Fields

element: Box<ConstantType>

The element type.

count: u32

Number of elements.

stride: u32

Bytes from the start of one element to the start of the next.

Struct

Named members at explicit offsets.

Fields

members: Vec<Member>

The members, in declaration order.

Implementations

impl ConstantType

pub fn size(&self) -> Option<u32>

Bytes from the start of a value of this type to the end of its last byte of data: no padding after the last matrix line, array element or member (a buffer whose rules pad an array’s tail states that in the buffer’s size). A value with no data (a matrix of no lines or lanes, an array of no elements) is 0. None if the layout overflows 32 bits.

pub fn members(&self) -> &[Member]

The members of a structure, or of the structure an array holds (those of its first element): empty for any other type.

Trait Implementations

impl Clone for ConstantType

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstantType

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

Formats the value using the given formatter.

impl Eq for ConstantType

impl Hash for ConstantType

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 ConstantType

fn cmp(&self, other: &Self) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ConstantType

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ConstantType

fn partial_cmp(&self, other: &Self) -> 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 Serialize for ConstantType

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ConstantType