[−][src]Enum naga::Expression

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pub enum Expression {
    Access {
        base: Handle<Expression>,
        index: Handle<Expression>,
    },
    AccessIndex {
        base: Handle<Expression>,
        index: u32,
    },
    Constant(Handle<Constant>),
    Compose {
        ty: Handle<Type>,
        components: Vec<Handle<Expression>>,
    },
    FunctionParameter(u32),
    GlobalVariable(Handle<GlobalVariable>),
    LocalVariable(Handle<LocalVariable>),
    Load {
        pointer: Handle<Expression>,
    },
    ImageSample {
        image: Handle<Expression>,
        sampler: Handle<Expression>,
        coordinate: Handle<Expression>,
        depth_ref: Option<Handle<Expression>>,
    },
    Unary {
        op: UnaryOperator,
        expr: Handle<Expression>,
    },
    Binary {
        op: BinaryOperator,
        left: Handle<Expression>,
        right: Handle<Expression>,
    },
    Intrinsic {
        fun: IntrinsicFunction,
        argument: Handle<Expression>,
    },
    DotProduct(Handle<Expression>, Handle<Expression>),
    CrossProduct(Handle<Expression>, Handle<Expression>),
    Derivative {
        axis: DerivativeAxis,
        expr: Handle<Expression>,
    },
    Call {
        origin: FunctionOrigin,
        arguments: Vec<Handle<Expression>>,
    },
}
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An expression that can be evaluated to obtain a value.

Variants

Access
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Array access with a computed index.

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Fields of Access

base: Handle<Expression>index: Handle<Expression>
AccessIndex
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Array access with a known index.

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Fields of AccessIndex

base: Handle<Expression>index: u32
Constant(Handle<Constant>)
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Constant value.

Compose
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Composite expression.

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Fields of Compose

ty: Handle<Type>components: Vec<Handle<Expression>>
FunctionParameter(u32)
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Reference a function parameter, by its index.

GlobalVariable(Handle<GlobalVariable>)
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Reference a global variable.

LocalVariable(Handle<LocalVariable>)
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Reference a local variable.

Load
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Load a value indirectly.

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Fields of Load

pointer: Handle<Expression>
ImageSample
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Sample a point from an image.

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Fields of ImageSample

image: Handle<Expression>sampler: Handle<Expression>coordinate: Handle<Expression>depth_ref: Option<Handle<Expression>>
Unary
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Apply an unary operator.

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Fields of Unary

op: UnaryOperatorexpr: Handle<Expression>
Binary
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Apply a binary operator.

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Fields of Binary

op: BinaryOperatorleft: Handle<Expression>right: Handle<Expression>
Intrinsic
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Call an intrinsic function.

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Fields of Intrinsic

fun: IntrinsicFunctionargument: Handle<Expression>
DotProduct(Handle<Expression>, Handle<Expression>)
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Dot product between two vectors.

CrossProduct(Handle<Expression>, Handle<Expression>)
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Cross product between two vectors.

Derivative
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Compute the derivative on an axis.

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Fields of Derivative

axis: DerivativeAxisexpr: Handle<Expression>
Call
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Call another function.

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Fields of Call

origin: FunctionOriginarguments: Vec<Handle<Expression>>

Trait Implementations

impl Clone for Expression[src][+]

impl Debug for Expression[src][+]

Auto Trait Implementations

impl RefUnwindSafe for Expression

impl Send for Expression

impl Sync for Expression

impl Unpin for Expression

impl UnwindSafe for Expression

Blanket Implementations

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

impl<T> Borrow<T> for T where
    T: ?Sized, [src][+]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src][+]

impl<T> From<T> for T[src][+]

impl<T, U> Into<U> for T where
    U: From<T>, [src][+]

impl<T> ToOwned for T where
    T: Clone, [src][+]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src][+]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src][+]

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

The type returned in the event of a conversion error.