Enum Indirection

enum Indirection {
    Ordinary,
    Reference,
}

The WGSL form that write_expr_with_indirection should use to render a Naga expression.

Sometimes a Naga Expression alone doesn’t provide enough information to choose the right rendering for it in WGSL. For example, one natural WGSL rendering of a Naga LocalVariable(x) expression might be &x, since LocalVariable produces a pointer to the local variable’s storage. But when rendering a Store statement, the pointer operand must be the left hand side of a WGSL assignment, so the proper rendering is x.

The caller of write_expr_with_indirection must provide an Expected value to indicate how ambiguous expressions should be rendered.

Variants

Ordinary

Render pointer-construction expressions as WGSL ptr-typed expressions.

This is the right choice for most cases. Whenever a Naga pointer expression is not the pointer operand of a Load or Store, it must be a WGSL pointer expression.

Reference

Render pointer-construction expressions as WGSL reference-typed expressions.

For example, this is the right choice for the pointer operand when rendering a Store statement as a WGSL assignment.

Trait Implementations

impl Clone for Indirection

fn clone(&self) -> Indirection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Indirection

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

Formats the value using the given formatter.

impl Copy for Indirection