Struct Modifier 

pub struct Modifier(pub u64);

A DRM format modifier describing the memory layout of a buffer.

Getting this right is a bandwidth question, not a correctness one: falling back to Modifier::LINEAR when a vendor tiled or compressed layout was available can halve effective memory bandwidth on an embedded panel. The chosen modifier is therefore always logged, and a negotiation that cannot find a common non-linear layout is reported rather than silently accepted.

Tuple Fields

0: u64

Implementations

impl Modifier

pub const LINEAR: Self

Plain linear layout. Universally supported and universally slow.

pub const INVALID: Self

The “driver picks” sentinel, DRM_FORMAT_MOD_INVALID.

Valid only where no explicit modifier negotiation happened. It must never reach an atomic commit that was built from a negotiated set.

pub const fn is_linear(self) -> bool

pub const fn is_valid(self) -> bool

Trait Implementations

impl Clone for Modifier

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 Modifier

impl Debug for Modifier

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

Formats the value using the given formatter.

impl Display for Modifier

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

Formats the value using the given formatter.

impl Eq for Modifier

impl Hash for Modifier

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 Modifier

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 Modifier

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Modifier

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 StructuralPartialEq for Modifier