pub struct TemporalAntiAliasSettings {
    pub reset: bool,
}
Expand description

Component to apply temporal anti-aliasing to a 3D perspective camera.

Temporal anti-aliasing (TAA) is a form of image smoothing/filtering, like multisample anti-aliasing (MSAA), or fast approximate anti-aliasing (FXAA). TAA works by blending (averaging) each frame with the past few frames.

§Tradeoffs

Pros:

  • Filters more types of aliasing than MSAA, such as textures and singular bright pixels (specular aliasing)
  • Cost scales with screen/view resolution, unlike MSAA which scales with number of triangles
  • Greatly increases the quality of stochastic rendering techniques such as SSAO, certain shadow map sampling methods, etc

Cons:

  • Chance of “ghosting” - ghostly trails left behind moving objects
  • Thin geometry, lighting detail, or texture lines may flicker noisily or disappear

Because TAA blends past frames with the current frame, when the frames differ too much (such as with fast moving objects or camera cuts), ghosting artifacts may occur.

Artifacts tend to be reduced at higher framerates and rendering resolution.

§Usage Notes

Requires that you add TemporalAntiAliasPlugin to your app, and add the DepthPrepass, MotionVectorPrepass, and TemporalJitter components to your camera.

Currently cannot be used with bevy_render::camera::OrthographicProjection.

Does not work well with alpha-blended meshes as it requires depth writing to determine motion.

It is very important that correct motion vectors are written for everything on screen. Failure to do so will lead to ghosting artifacts. For instance, if particle effects are added using a third party library, the library must either:

  1. Write particle motion vectors to the motion vectors prepass texture
  2. Render particles after TAA

If no MipBias component is attached to the camera, TAA will add a MipBias(-1.0) component.

Fields§

§reset: bool

Set to true to delete the saved temporal history (past frames).

Useful for preventing ghosting when the history is no longer representative of the current frame, such as in sudden camera cuts.

After setting this to true, it will automatically be toggled back to false at the end of the frame.

Trait Implementations§

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impl Clone for TemporalAntiAliasSettings

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fn clone(&self) -> TemporalAntiAliasSettings

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Component for TemporalAntiAliasSettings
where TemporalAntiAliasSettings: Send + Sync + 'static,

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const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table

A constant indicating the storage type used for this component.
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fn register_component_hooks(_hooks: &mut ComponentHooks)

Called when registering this component, allowing mutable access to its ComponentHooks.
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impl Default for TemporalAntiAliasSettings

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fn default() -> TemporalAntiAliasSettings

Returns the “default value” for a type. Read more
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impl FromReflect for TemporalAntiAliasSettings
where TemporalAntiAliasSettings: Any + Send + Sync, bool: FromReflect + TypePath + RegisterForReflection,

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fn from_reflect( reflect: &(dyn Reflect + 'static), ) -> Option<TemporalAntiAliasSettings>

Constructs a concrete instance of Self from a reflected value.
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fn take_from_reflect( reflect: Box<dyn Reflect>, ) -> Result<Self, Box<dyn Reflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails. Read more
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impl GetTypeRegistration for TemporalAntiAliasSettings
where TemporalAntiAliasSettings: Any + Send + Sync, bool: FromReflect + TypePath + RegisterForReflection,

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fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.
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fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type. Read more
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impl Reflect for TemporalAntiAliasSettings
where TemporalAntiAliasSettings: Any + Send + Sync, bool: FromReflect + TypePath + RegisterForReflection,

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fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
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fn into_any(self: Box<TemporalAntiAliasSettings>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.
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fn into_reflect(self: Box<TemporalAntiAliasSettings>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
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fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.
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fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
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fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
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fn try_apply( &mut self, value: &(dyn Reflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
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fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<TemporalAntiAliasSettings>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
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fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type). Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value. Read more
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fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl Struct for TemporalAntiAliasSettings
where TemporalAntiAliasSettings: Any + Send + Sync, bool: FromReflect + TypePath + RegisterForReflection,

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

Returns a reference to the value of the field named name as a &dyn Reflect.
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fn field_mut(&mut self, name: &str) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.
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fn field_at(&self, index: usize) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn Reflect.
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fn field_at_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.
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fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.
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fn field_len(&self) -> usize

Returns the number of fields in the struct.
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fn iter_fields(&self) -> FieldIter<'_>

Returns an iterator over the values of the reflectable fields for this struct.
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fn clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.
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impl TypePath for TemporalAntiAliasSettings

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fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
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fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
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Returns the name of the type, or None if it is anonymous. Read more
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Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
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impl Typed for TemporalAntiAliasSettings
where TemporalAntiAliasSettings: Any + Send + Sync, bool: FromReflect + TypePath + RegisterForReflection,

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fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

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