Enum SamplerFallback

pub enum SamplerFallback {
    White,
    Normal,
    Black,
    Volume,
}

A fallback value for the sampler.

Notes

Sometimes you don’t want to set a value to a sampler, or you even don’t have the appropriate one. There is fallback value that helps you with such situations, it defines a values that will be fetched from a sampler when there is no texture.

For example, standard shader has a lot of samplers defined: diffuse, normal, height, emission, mask, metallic, roughness, etc. In some situations you may not have all the textures, you have only diffuse texture, to keep rendering correct, each other property has appropriate fallback value. Normal sampler - a normal vector pointing up (+Y), height - zero, emission - zero, etc.

Fallback value is also helpful to catch missing textures, you’ll definitely know the texture is missing by very specific value in the fallback texture.

Variants

White

A 1x1px white texture.

Normal

A 1x1px texture with (0, 1, 0) vector.

Black

A 1x1px black texture.

Volume

A 1x1x1 volume texture with 1 black pixel.

Trait Implementations

impl AsRef<str> for SamplerFallback

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for SamplerFallback

fn clone(&self) -> SamplerFallback

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SamplerFallback

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

Formats the value using the given formatter.

impl Default for SamplerFallback

fn default() -> SamplerFallback

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SamplerFallback

fn deserialize<__D>( __deserializer: __D, ) -> Result<SamplerFallback, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FromStr for SamplerFallback

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str( s: &str, ) -> Result<SamplerFallback, <SamplerFallback as FromStr>::Err>

Parses a string s to return a value of this type.

impl PartialEq for SamplerFallback

fn eq(&self, other: &SamplerFallback) -> 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 Reflect for SamplerFallback

where SamplerFallback: 'static,

fn source_path() -> &'static str

fn type_name(&self) -> &'static str

fn doc(&self) -> &'static str

fn assembly_name(&self) -> &'static str

Returns a parent assembly name of the type that implements this trait. WARNING: You should use proc-macro (#[derive(Reflect)]) to ensure that this method will return correct assembly name. In other words - there’s no guarantee, that any implementation other than proc-macro will return a correct name of the assembly. Alternatively, you can use env!("CARGO_PKG_NAME") as an implementation.

fn type_assembly_name() -> &'static str

Returns a parent assembly name of the type that implements this trait. WARNING: You should use proc-macro (#[derive(Reflect)]) to ensure that this method will return correct assembly name. In other words - there’s no guarantee, that any implementation other than proc-macro will return a correct name of the assembly. Alternatively, you can use env!("CARGO_PKG_NAME") as an implementation.

fn fields_info(&self, func: &mut dyn FnMut(&[FieldInfo<'_, '_>]))

fn into_any(self: Box<SamplerFallback>) -> Box<dyn Any>

fn set( &mut self, value: Box<dyn Reflect>, ) -> Result<Box<dyn Reflect>, Box<dyn Reflect>>

fn as_any(&self, func: &mut dyn FnMut(&(dyn Any + 'static)))

fn as_any_mut(&mut self, func: &mut dyn FnMut(&mut (dyn Any + 'static)))

fn as_reflect(&self, func: &mut dyn FnMut(&(dyn Reflect + 'static)))

fn as_reflect_mut(&mut self, func: &mut dyn FnMut(&mut (dyn Reflect + 'static)))

fn fields(&self, func: &mut dyn FnMut(&[&(dyn Reflect + 'static)]))

fn fields_mut( &mut self, func: &mut dyn FnMut(&mut [&mut (dyn Reflect + 'static)]), )

fn field( &self, name: &str, func: &mut dyn FnMut(Option<&(dyn Reflect + 'static)>), )

fn field_mut( &mut self, name: &str, func: &mut dyn FnMut(Option<&mut (dyn Reflect + 'static)>), )

fn set_field( &mut self, field: &str, value: Box<dyn Reflect>, func: &mut dyn FnMut(Result<Box<dyn Reflect>, Box<dyn Reflect>>), )

Calls user method specified with #[reflect(setter = ..)] or falls back to Reflect::field_mut

fn as_array(&self, func: &mut dyn FnMut(Option<&(dyn ReflectArray + 'static)>))

fn as_array_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectArray + 'static)>), )

fn as_list(&self, func: &mut dyn FnMut(Option<&(dyn ReflectList + 'static)>))

fn as_list_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectList + 'static)>), )

fn as_inheritable_variable( &self, func: &mut dyn FnMut(Option<&(dyn ReflectInheritableVariable + 'static)>), )

fn as_inheritable_variable_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectInheritableVariable + 'static)>), )

fn as_hash_map( &self, func: &mut dyn FnMut(Option<&(dyn ReflectHashMap + 'static)>), )

fn as_hash_map_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectHashMap + 'static)>), )

impl Serialize for SamplerFallback

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&str> for SamplerFallback

type Error = ParseError

The type returned in the event of a conversion error.

fn try_from( s: &str, ) -> Result<SamplerFallback, <SamplerFallback as TryFrom<&str>>::Error>

Performs the conversion.

impl TypeUuidProvider for SamplerFallback

fn type_uuid() -> Uuid

Return type UUID.

impl VariantNames for SamplerFallback

const VARIANTS: &'static [&'static str]

Names of the variants of this enum

impl Visit for SamplerFallback

fn visit(&mut self, name: &str, visitor: &mut Visitor) -> Result<(), VisitError>

Read or write this value, depending on whether Visitor::is_reading() is true or false.

impl Copy for SamplerFallback

impl Eq for SamplerFallback

impl StructuralPartialEq for SamplerFallback