naga/back/wgsl/
mod.rs

1/*!
2Backend for [WGSL][wgsl] (WebGPU Shading Language).
3
4[wgsl]: https://gpuweb.github.io/gpuweb/wgsl.html
5*/
6
7mod writer;
8
9use thiserror::Error;
10
11pub use writer::{Writer, WriterFlags};
12
13#[derive(Error, Debug)]
14pub enum Error {
15    #[error(transparent)]
16    FmtError(#[from] std::fmt::Error),
17    #[error("{0}")]
18    Custom(String),
19    #[error("{0}")]
20    Unimplemented(String), // TODO: Error used only during development
21    #[error("Unsupported math function: {0:?}")]
22    UnsupportedMathFunction(crate::MathFunction),
23    #[error("Unsupported relational function: {0:?}")]
24    UnsupportedRelationalFunction(crate::RelationalFunction),
25}
26
27pub fn write_string(
28    module: &crate::Module,
29    info: &crate::valid::ModuleInfo,
30    flags: WriterFlags,
31) -> Result<String, Error> {
32    let mut w = Writer::new(String::new(), flags);
33    w.write(module, info)?;
34    let output = w.finish();
35    Ok(output)
36}
37
38impl crate::AtomicFunction {
39    const fn to_wgsl(self) -> &'static str {
40        match self {
41            Self::Add => "Add",
42            Self::Subtract => "Sub",
43            Self::And => "And",
44            Self::InclusiveOr => "Or",
45            Self::ExclusiveOr => "Xor",
46            Self::Min => "Min",
47            Self::Max => "Max",
48            Self::Exchange { compare: None } => "Exchange",
49            Self::Exchange { .. } => "CompareExchangeWeak",
50        }
51    }
52}
naga/back/wgsl/mod.rs

naga/back/wgsl/
mod.rs
