Enum gfx_core::texture::FilterMethod

pub enum FilterMethod {
    Scale,
    Mipmap,
    Bilinear,
    Trilinear,
    Anisotropic(u8),
}

How to filter the texture when sampling. They correspond to increasing levels of quality, but also cost. Mipmap, trilinear and anisotropic filtering require mipmapping, but the other filtering methods do not.

These names are somewhat poor, in that “bilinear” is really just doing linear filtering on each axis, and it is only bilinear in the case of 2D textures. Similarly for trilinear, it is really Quadralinear(?) for 3D textures. Alas, these names are simple, and match certain intuitions ingrained by many years of public use of inaccurate terminology.

Variants

Scale

The dumbest filtering possible, nearest-neighbor interpolation.

Mipmap

Add simple mipmapping.

Bilinear

Sample multiple texels within a single mipmap level to increase quality.

Trilinear

Sample multiple texels across two mipmap levels to increase quality.

Anisotropic(u8)

Anisotropic filtering with a given “max”, must be between 1 and 16, inclusive.

Trait Implementations

impl Clone for FilterMethod

fn clone(&self) -> FilterMethod

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for FilterMethod

impl Debug for FilterMethod

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

Formats the value using the given formatter.

impl Eq for FilterMethod

impl Hash for FilterMethod

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Ord for FilterMethod

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

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<FilterMethod> for FilterMethod

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<FilterMethod> for FilterMethod

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

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

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

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

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

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

impl StructuralEq for FilterMethod

impl StructuralPartialEq for FilterMethod