pub struct PushConstantItem {
    pub access_path: String,
    pub ty: Handle<Type>,
    pub offset: u32,
}
Expand description

All information to bind a single uniform value to the shader.

Push constants are emulated using traditional uniforms in OpenGL.

These are composed of a set of primitives (scalar, vector, matrix) that are given names. Because they are not backed by the concept of a buffer, we must do the work of calculating the offset of each primitive in the push constant block.

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§access_path: String

GL uniform name for the item. This name is the same as if you were to access it directly from a GLSL shader.

The with the following example, the following names will be generated, one name per GLSL uniform.

struct InnerStruct {
    value: f32,
}

struct PushConstant {
    InnerStruct inner;
    vec4 array[2];
}

uniform PushConstants _push_constant_binding_cs;
- _push_constant_binding_cs.inner.value
- _push_constant_binding_cs.array[0]
- _push_constant_binding_cs.array[1]
§ty: Handle<Type>

Type of the uniform. This will only ever be a scalar, vector, or matrix.

§offset: u32

The offset in the push constant memory block this uniform maps to.

The size of the uniform can be derived from the type.

Trait Implementations§

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impl Clone for PushConstantItem

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fn clone(&self) -> PushConstantItem

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 Debug for PushConstantItem

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.