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|
use serde::{Deserialize, Serialize};
use std::{env, fs, path::Path};
#[derive(Hash, PartialEq, Eq, Serialize, Deserialize)]
enum Stage {
Vertex,
Fragment,
Compute,
}
#[derive(Hash, PartialEq, Eq, Serialize, Deserialize)]
struct BindSource {
stage: Stage,
group: u32,
binding: u32,
}
#[derive(Serialize, Deserialize)]
struct BindTarget {
#[serde(default)]
buffer: Option<u8>,
#[serde(default)]
texture: Option<u8>,
#[serde(default)]
sampler: Option<u8>,
#[serde(default)]
mutable: bool,
}
#[derive(Default, Serialize, Deserialize)]
struct Parameters {
#[serde(default)]
spv_flow_dump_prefix: String,
metal_bindings: naga::FastHashMap<BindSource, BindTarget>,
}
fn main() {
env_logger::init();
let args = env::args().collect::<Vec<_>>();
if args.len() <= 1 {
println!("Call with <input> <output>");
return;
}
let param_path = std::path::PathBuf::from(&args[1]).with_extension("param.ron");
let params = match fs::read_to_string(param_path) {
Ok(string) => ron::de::from_str(&string).unwrap(),
Err(_) => Parameters::default(),
};
let module = match Path::new(&args[1])
.extension()
.expect("Input has no extension?")
.to_str()
.unwrap()
{
#[cfg(feature = "spv-in")]
"spv" => {
let options = naga::front::spv::Options {
flow_graph_dump_prefix: if params.spv_flow_dump_prefix.is_empty() {
None
} else {
Some(params.spv_flow_dump_prefix.into())
},
};
let input = fs::read(&args[1]).unwrap();
naga::front::spv::parse_u8_slice(&input, &options).unwrap()
}
#[cfg(feature = "wgsl-in")]
"wgsl" => {
let input = fs::read_to_string(&args[1]).unwrap();
naga::front::wgsl::parse_str(&input).unwrap()
}
#[cfg(feature = "glsl-in")]
"vert" => {
let input = fs::read_to_string(&args[1]).unwrap();
naga::front::glsl::parse_str(
&input,
"main",
naga::ShaderStage::Vertex,
Default::default(),
)
.unwrap()
}
#[cfg(feature = "glsl-in")]
"frag" => {
let input = fs::read_to_string(&args[1]).unwrap();
naga::front::glsl::parse_str(
&input,
"main",
naga::ShaderStage::Fragment,
Default::default(),
)
.unwrap()
}
#[cfg(feature = "glsl-in")]
"comp" => {
let input = fs::read_to_string(&args[1]).unwrap();
naga::front::glsl::parse_str(
&input,
"main",
naga::ShaderStage::Compute,
Default::default(),
)
.unwrap()
}
#[cfg(feature = "deserialize")]
"ron" => {
let mut input = fs::File::open(&args[1]).unwrap();
ron::de::from_reader(&mut input).unwrap()
}
other => {
if true {
// prevent "unreachable_code" warnings
panic!("Unknown input extension: {}", other);
}
naga::Module::generate_empty()
}
};
if args.len() <= 2 {
println!("{:#?}", module);
return;
}
match Path::new(&args[2])
.extension()
.expect("Output has no extension?")
.to_str()
.unwrap()
{
#[cfg(feature = "msl-out")]
"metal" => {
use naga::back::msl;
let mut binding_map = msl::BindingMap::default();
for (key, value) in params.metal_bindings {
binding_map.insert(
msl::BindSource {
stage: match key.stage {
Stage::Vertex => naga::ShaderStage::Vertex,
Stage::Fragment => naga::ShaderStage::Fragment,
Stage::Compute => naga::ShaderStage::Compute,
},
group: key.group,
binding: key.binding,
},
msl::BindTarget {
buffer: value.buffer,
texture: value.texture,
sampler: value.sampler,
mutable: value.mutable,
},
);
}
let options = msl::Options {
lang_version: (1, 0),
spirv_cross_compatibility: false,
binding_map,
};
let msl = msl::write_string(&module, &options).unwrap();
fs::write(&args[2], msl).unwrap();
}
#[cfg(feature = "spv-out")]
"spv" => {
use naga::back::spv;
let debug_flag = args.get(3).map_or(spv::WriterFlags::DEBUG, |arg| {
if arg.parse().unwrap() {
spv::WriterFlags::DEBUG
} else {
spv::WriterFlags::NONE
}
});
let spv = spv::Writer::new(&module.header, debug_flag).write(&module);
let bytes = spv
.iter()
.fold(Vec::with_capacity(spv.len() * 4), |mut v, w| {
v.extend_from_slice(&w.to_le_bytes());
v
});
fs::write(&args[2], bytes.as_slice()).unwrap();
}
#[cfg(feature = "glsl-out")]
stage @ "vert" | stage @ "frag" | stage @ "comp" => {
use naga::{
back::glsl::{self, Options, Version},
ShaderStage,
};
let version = match args.get(3).map(|p| p.as_str()) {
Some("core") => {
Version::Desktop(args.get(4).and_then(|v| v.parse().ok()).unwrap_or(330))
}
Some("es") => {
Version::Embedded(args.get(4).and_then(|v| v.parse().ok()).unwrap_or(310))
}
Some(_) => panic!("Unknown profile"),
_ => Version::Embedded(310),
};
let options = Options {
version,
entry_point: (
match stage {
"vert" => ShaderStage::Vertex,
"frag" => ShaderStage::Fragment,
"comp" => ShaderStage::Compute,
_ => unreachable!(),
},
String::from("main"),
),
};
let file = fs::OpenOptions::new()
.write(true)
.truncate(true)
.create(true)
.open(&args[2])
.unwrap();
let mut writer = glsl::Writer::new(file, &module, &options).unwrap();
writer
.write()
.map_err(|e| {
fs::remove_file(&args[2]).unwrap();
e
})
.unwrap();
}
#[cfg(feature = "serialize")]
"ron" => {
let config = ron::ser::PrettyConfig::new()
.with_enumerate_arrays(true)
.with_decimal_floats(true);
let output = ron::ser::to_string_pretty(&module, config).unwrap();
fs::write(&args[2], output).unwrap();
}
other => {
let _ = params;
panic!(
"Unknown output extension: {}, forgot to enable a feature?",
other
);
}
}
}
|
