forked from itycodes/shaderc
parent
db7be30a7a
commit
6cf6beda27
GPG Key ID:
4E53F4CB69B2CC8D
@ -0,0 +1,213 @@
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use std::fmt::{self, Display, Write};
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use crate::{
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compiler::CompilerError,
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parser::{Location, ParseError},
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};
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pub fn print_error<E: FormattedLocatedError>(err: E, src: Option<&str>) {
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let mut buf = String::new();
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match src {
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Some(src) => {
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err.fmt_with_src(&mut buf, &src).unwrap();
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}
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None => err.fmt(&mut buf).unwrap(),
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}
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print!("{buf}");
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}
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pub trait FormattedLocatedError {
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fn fmt<W: fmt::Write>(&self, w: &mut W) -> fmt::Result;
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fn fmt_with_src<W: fmt::Write>(&self, w: &mut W, src: &str) -> fmt::Result;
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}
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impl Display for Location {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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Location::Char { line, col } => write!(f, "{line}:{col}"),
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Location::String { lines, cols } => write!(f, "{}:{}", lines.start(), cols.start()),
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Location::All => write!(f, "Entire file"),
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}
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}
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}
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impl FormattedLocatedError for ParseError {
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fn fmt<W: fmt::Write>(&self, w: &mut W) -> fmt::Result {
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match self {
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ParseError::UnexpectedParenClose(location) => {
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writeln!(w, "Unexpected closing paren at {location}")?
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}
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ParseError::UnexpectedEof => writeln!(w, "Unexpected end of file")?,
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}
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Ok(())
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}
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fn fmt_with_src<W: fmt::Write>(&self, w: &mut W, src: &str) -> fmt::Result {
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match self {
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ParseError::UnexpectedParenClose(location) => {
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writeln!(w, "Unexpected closing paren at {location}")?;
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here(location, src, Some("Unexpected ')'".to_string()), w)?;
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}
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ParseError::UnexpectedEof => writeln!(w, "Unexpected end of file")?,
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}
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Ok(())
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}
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}
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impl FormattedLocatedError for CompilerError {
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fn fmt<W: fmt::Write>(&self, w: &mut W) -> fmt::Result {
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match self {
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CompilerError::ExpectedSymbol(location) => {
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writeln!(
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w,
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"Expected a symbol but got a list or nothing at {location}"
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)
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}
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CompilerError::ExpectedList(location) => {
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writeln!(
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w,
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"Expected a list but got a symbol or nothing at {location}"
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)
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}
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CompilerError::UnknownKeyword(k, location) => {
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writeln!(w, "Got unexpected keyword {k} at {location}")?;
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writeln!(w, "Expected one of: module, import, bind, dec, entry, fun")
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}
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CompilerError::ExpectedOneOf(vec, k, location) => {
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writeln!(w, "Got unexpected token {k} at {location}")?;
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writeln!(w, "Expected one of: {}", vec.join(", "))
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}
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CompilerError::TrailingTokens(location) => {
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writeln!(w, "Got unexpected trailing tokens at {location}")?;
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writeln!(w, "Expected end of list")
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}
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CompilerError::UnknownBind(b, location) => {
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writeln!(w, "Got unexpected keyword {b} at {location}")?;
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writeln!(w, "Expected one of: BuiltIn, Location")
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}
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CompilerError::ExpectedType(location) => {
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writeln!(w, "Expected name:type but got name at {location}")
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}
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}
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}
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fn fmt_with_src<W: fmt::Write>(&self, w: &mut W, src: &str) -> fmt::Result {
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match self {
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CompilerError::ExpectedSymbol(location) => {
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writeln!(
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w,
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"Expected a symbol but got a list or nothing at {location}"
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)?;
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here(location, src, Some("Expected symbol".to_string()), w)
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}
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CompilerError::ExpectedList(location) => {
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writeln!(
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w,
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"Expected a list but got a symbol or nothing at {location}"
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)?;
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here(location, src, Some("Expected List".to_string()), w)
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}
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CompilerError::UnknownKeyword(k, location) => {
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writeln!(w, "Got unexpected keyword {k} at {location}")?;
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writeln!(w, "Expected one of: module, import, bind, dec, entry, fun")?;
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here(location, src, Some("Unexpected keyword".to_string()), w)
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}
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CompilerError::ExpectedOneOf(vec, k, location) => {
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writeln!(w, "Got unexpected token {k} at {location}")?;
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writeln!(w, "Expected one of: {}", vec.join(", "))?;
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here(location, src, Some("Unexpected token".to_string()), w)
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}
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CompilerError::TrailingTokens(location) => {
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writeln!(w, "Got unexpected trailing tokens at {location}")?;
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writeln!(w, "Expected end of list")?;
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here(location, src, Some("Unexpected token".to_string()), w)
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}
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CompilerError::UnknownBind(b, location) => {
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writeln!(w, "Got unexpected keyword {b} at {location}")?;
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writeln!(w, "Expected one of: BuiltIn, Location")?;
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here(location, src, Some("Unexpected keyword".to_string()), w)
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}
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CompilerError::ExpectedType(location) => {
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writeln!(w, "Expected name:type but got name at {location}")?;
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here(location, src, None, w)
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}
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}
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}
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}
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fn here<W: fmt::Write>(
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loc: &Location,
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src: &str,
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comment: Option<String>,
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w: &mut W,
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) -> fmt::Result {
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writeln!(w, "Here:")?;
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writeln!(
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w,
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"{}",
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annotate_src(&loc, src, comment.unwrap_or_default())
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)?;
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Ok(())
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}
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fn annotate_src(loc: &Location, src: &str, comment: String) -> String {
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let src_lines = src.split('\n').collect::<Vec<_>>();
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let mut buf = String::new();
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match loc {
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Location::Char { line, col } => {
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writeln!(buf, "{}|{}", line_num(*line - 1), src_lines[*line - 2]).unwrap();
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writeln!(buf, "{}|{}", line_num(*line), src_lines[*line - 1]).unwrap();
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writeln!(buf, "{}|{}^ {}", " ", " ".repeat(col - 1), comment).unwrap();
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writeln!(buf, "{}|{}", line_num(*line + 1), src_lines[*line]).unwrap();
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}
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Location::String { lines, cols } => {
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writeln!(
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buf,
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"{}|{}",
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line_num(*lines.start() - 1),
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src_lines[*lines.start() - 2]
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)
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.unwrap();
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writeln!(
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buf,
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"{}",
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src_lines[(lines.start() - 1)..*lines.end()]
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.iter()
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.zip(lines.clone())
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.map(|(l, n)| format!("{}|{}", line_num(n), l))
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.collect::<Vec<_>>()
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.join("\n")
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)
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.unwrap();
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writeln!(
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buf,
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"{}|{}{} {}",
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" ",
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" ".repeat(cols.start() - 1),
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"^".repeat(cols.end() - cols.start() + 1),
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comment
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)
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.unwrap();
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writeln!(
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buf,
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"{}|{}",
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line_num(*lines.end() + 1),
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src_lines[*lines.end()]
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)
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.unwrap();
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}
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Location::All => todo!(),
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}
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buf
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}
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fn line_num(num: usize) -> String {
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let num = format!("{num}");
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format!("{num}{}", " ".repeat(6 - num.len()))
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}
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@ -1,115 +1,219 @@
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use std::fmt::Write;
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use compiler::{backend::spirv_meta, meta_compile};
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use error::print_error;
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use std::{env, fs, path::PathBuf};
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use parser::parse_string;
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pub mod compiler;
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mod error;
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pub mod parser;
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#[derive(Debug, Default)]
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struct CompilerArgs {
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input: Option<PathBuf>,
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output: Option<PathBuf>,
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print_help: bool,
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print_version: bool,
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}
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const SPIRV_VERSION: &'static str = "1.0";
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fn main() {
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let mut ops: Vec<(Option<String>, Vec<String>)> = Vec::new();
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// OpMemoryModel Logical GLSL450
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// OpEntryPoint Fragment %main "main"
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// OpExecutionMode %main OriginUpperLeft
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// OpSource GLSL 450
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// OpSourceExtension "GL_GOOGLE_cpp_style_line_directive"
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// OpSourceExtension "GL_GOOGLE_include_directive"
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// OpName %main "main"
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//%void = OpTypeVoid
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//%3 = OpTypeFunction %void
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//%main = OpFunction %void None %3
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//%5 = OpLabel
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// OpReturn
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// OpFunctionEnd
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ops.push((None, vec!["OpCapability".to_string(), "Shader".to_string()]));
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ops.push((
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Some("%1".to_string()),
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vec![
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"OpExtInstImport".to_string(),
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"\"GLSL.std.450\"".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpMemoryModel".to_string(),
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"Logical".to_string(),
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"GLSL450".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpEntryPoint".to_string(),
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"Fragment".to_string(),
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"%main".to_string(),
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"\"main\"".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpExecutionMode".to_string(),
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"%main".to_string(),
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"OriginUpperLeft".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpSource".to_string(),
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"GLSL".to_string(),
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"450".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpSourceExtension".to_string(),
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"\"GL_GOOGLE_cpp_style_line_directive\"".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpSourceExtension".to_string(),
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"\"GL_GOOGLE_include_directive\"".to_string(),
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],
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));
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ops.push((
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None,
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vec![
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"OpName".to_string(),
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"%main".to_string(),
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"\"main\"".to_string(),
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],
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));
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ops.push((Some("%void".to_string()), vec!["OpTypeVoid".to_string()]));
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ops.push((
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Some("%3".to_string()),
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vec!["OpTypeFunction".to_string(), "%void".to_string()],
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));
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ops.push((
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Some("%main".to_string()),
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vec![
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"OpFunction".to_string(),
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"%void".to_string(),
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"None".to_string(),
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"%3".to_string(),
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],
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));
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ops.push((Some("%5".to_string()), vec!["OpLabel".to_string()]));
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ops.push((None, vec!["OpReturn".to_string()]));
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ops.push((None, vec!["OpFunctionEnd".to_string()]));
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let mut out: String = String::new();
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for op in ops {
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if op.0.is_some() {
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write!(out, "{} = ", op.0.unwrap()).unwrap();
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}
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for arg in op.1 {
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write!(out, "{} ", arg).unwrap();
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}
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writeln!(out).unwrap();
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}
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println!("{}", out);
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let args = parse_args();
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if args.print_version || args.print_help {
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if args.print_help {
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print_help();
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}
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if args.print_version {
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print_version();
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}
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return;
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}
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let Some(input) = args.input else {
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eprintln!("No input specified");
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return;
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};
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let output = args.output.unwrap_or(PathBuf::from("./out.spv"));
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let src = match fs::read_to_string(input) {
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Ok(i) => i,
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Err(e) => {
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eprintln!("{e}");
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return;
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}
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};
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let ast = match parse_string(&src) {
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Ok(i) => i,
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Err(e) => {
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print_error(e, Some(&src));
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return;
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}
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};
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let module = match meta_compile(ast) {
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Ok(m) => m,
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Err(e) => {
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print_error(e, Some(&src));
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return;
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}
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};
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let res = spirv_meta(module);
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fs::write(output, res).unwrap();
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}
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fn parse_args() -> CompilerArgs {
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let mut args = env::args();
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let _prog = args.next().unwrap();
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let mut parsed_args = CompilerArgs::default();
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while let Some(arg) = args.next() {
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if let Some(arg) = arg.strip_prefix("--") {
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match arg {
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"help" => parsed_args.print_help = true,
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"version" => parsed_args.print_version = true,
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"input" => {
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if parsed_args.input.is_none() {
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let Some(input) = args.next() else {
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eprintln!("input needs a file");
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eprintln!();
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parsed_args.print_help = true;
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return parsed_args;
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};
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parsed_args.input = Some(PathBuf::from(input));
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} else {
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eprintln!("input can be passed only once");
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eprintln!();
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parsed_args.print_help = true;
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return parsed_args;
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}
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}
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"output" => {
|
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if parsed_args.output.is_none() {
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let Some(output) = args.next() else {
|
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parsed_args.print_help = true;
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eprintln!("output needs a file");
|
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eprintln!();
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return parsed_args;
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};
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|
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parsed_args.output = Some(PathBuf::from(output));
|
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} else {
|
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eprintln!("output can be passed only once");
|
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eprintln!();
|
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parsed_args.print_help = true;
|
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return parsed_args;
|
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}
|
||||
}
|
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a => {
|
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eprintln!("unknown arg --{a}");
|
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eprintln!();
|
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parsed_args.print_help = true;
|
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return parsed_args;
|
||||
}
|
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}
|
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continue;
|
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}
|
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|
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if let Some(arg) = arg.strip_prefix("-") {
|
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let mut chars = arg.chars();
|
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while let Some(arg) = chars.next() {
|
||||
match arg {
|
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'i' => {
|
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if chars.next().is_some() {
|
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parsed_args.print_help = true;
|
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eprintln!("-i needs to be last in combined args");
|
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return parsed_args;
|
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}
|
||||
|
||||
if parsed_args.input.is_none() {
|
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let Some(input) = args.next() else {
|
||||
eprintln!("input needs a file");
|
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eprintln!();
|
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parsed_args.print_help = true;
|
||||
return parsed_args;
|
||||
};
|
||||
|
||||
parsed_args.input = Some(PathBuf::from(input));
|
||||
} else {
|
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eprintln!("input can be passed only once");
|
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eprintln!();
|
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parsed_args.print_help = true;
|
||||
return parsed_args;
|
||||
}
|
||||
}
|
||||
'o' => {
|
||||
if chars.next().is_some() {
|
||||
parsed_args.print_help = true;
|
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eprintln!("-o needs to be last in combined args");
|
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eprintln!();
|
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return parsed_args;
|
||||
}
|
||||
|
||||
if parsed_args.output.is_none() {
|
||||
let Some(output) = args.next() else {
|
||||
parsed_args.print_help = true;
|
||||
eprintln!("output needs a file");
|
||||
return parsed_args;
|
||||
};
|
||||
|
||||
parsed_args.output = Some(PathBuf::from(output));
|
||||
} else {
|
||||
eprintln!("output can be passed only once");
|
||||
eprintln!();
|
||||
parsed_args.print_help = true;
|
||||
return parsed_args;
|
||||
}
|
||||
}
|
||||
'h' => parsed_args.print_help = true,
|
||||
'v' => parsed_args.print_version = true,
|
||||
a => {
|
||||
eprintln!("unknown arg -{a}");
|
||||
eprintln!();
|
||||
parsed_args.print_help = true;
|
||||
return parsed_args;
|
||||
}
|
||||
}
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
eprintln!("unknown arg {arg}");
|
||||
eprintln!();
|
||||
parsed_args.print_help = true;
|
||||
return parsed_args;
|
||||
}
|
||||
|
||||
parsed_args
|
||||
}
|
||||
|
||||
fn print_help() {
|
||||
println!("-- ShaderC shader compiler --");
|
||||
println!();
|
||||
println!("Arguments:");
|
||||
println!("\t-i --input:");
|
||||
println!("\t\tThe shader to be parsed and compiled, manadory argument");
|
||||
println!();
|
||||
println!("\t-o --output:");
|
||||
println!("\t\tWhere to output the compiled spirv assembly to, default: out.spv");
|
||||
println!();
|
||||
println!("\t-h --help:");
|
||||
println!("\t\tPrint this and exit");
|
||||
println!("\t-v --version:");
|
||||
println!("\t\tPrint the compilers version");
|
||||
println!();
|
||||
}
|
||||
|
||||
fn print_version() {
|
||||
println!(
|
||||
"ShaderC version: {}; SPIR-V version: {}",
|
||||
env!("CARGO_PKG_VERSION"),
|
||||
SPIRV_VERSION
|
||||
)
|
||||
}
|
||||
|
||||
@ -0,0 +1,14 @@
|
||||
(module Shader Logical GLSL450)
|
||||
(import :std GLSL.std.450)
|
||||
(bind (frag-coord:*v4f32i) (BuiltIn FragCoord))
|
||||
(bind (out-color:*v4f32o) (Location 0))
|
||||
(dec frag-coord:*v4f32i Input)
|
||||
(decr out-color:*v4f32o Output)
|
||||
(entry main Fragment OriginUpperLeft (:frag-coord :out-color))
|
||||
(fun (main)
|
||||
(store-ptr (out-color)
|
||||
(v4f32i (/ (.xy (load-ptr frag-coord))
|
||||
(v2f32 1920.0 1080.0))
|
||||
1.0
|
||||
1.0)))
|
||||
|
||||
@ -0,0 +1,12 @@
|
||||
OpCapability Shader
|
||||
OpMemoryModel Logical GLSL450
|
||||
OpEntryPoint Fragment %main "main" %frag_coord %out_color
|
||||
OpExecutionMode %main OriginUpperLeft
|
||||
%f32 = OpTypeFloat 32
|
||||
%v4f32 = OpTypeVector %f32 4
|
||||
%pv4f32i = OpTypePointer Input %v4f32
|
||||
%frag_coord = OpVariable %pv4f32i Input
|
||||
OpDecorate %frag_coord BuiltIn FragCoord
|
||||
%pv4f32o = OpTypePointer Output %v4f32
|
||||
%out_color = OpVariable %pv4f32o Output
|
||||
OpDecorate %out_color Location 0
|
||||
Loading…
Reference in new issue