65 lines
1.9 KiB
Rust
65 lines
1.9 KiB
Rust
// Copyright 2016 Matthew Collins
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
use std::collections::HashMap;
|
|
|
|
#[derive(Default)]
|
|
pub struct Registry {
|
|
shaders: HashMap<String, String>,
|
|
}
|
|
|
|
impl Registry {
|
|
pub fn new() -> Registry {
|
|
Default::default()
|
|
}
|
|
|
|
pub fn register(&mut self, name: &str, source: &str) {
|
|
if self.shaders.contains_key(name) {
|
|
panic!("shader {} is already defined", name);
|
|
}
|
|
self.shaders
|
|
.insert(name.to_owned(), source.trim().to_owned());
|
|
}
|
|
|
|
pub fn get(&self, name: &str) -> String {
|
|
let mut out = String::new();
|
|
out.push_str("#version 150\n");
|
|
self.get_internal(&mut out, name);
|
|
out
|
|
}
|
|
|
|
pub fn get_define(&self, name: &str, define: &str) -> String {
|
|
let mut out = String::new();
|
|
out.push_str("#version 150\n");
|
|
out.push_str("#define ");
|
|
out.push_str(define);
|
|
out.push_str("\n");
|
|
self.get_internal(&mut out, name);
|
|
out
|
|
}
|
|
|
|
fn get_internal(&self, out: &mut String, name: &str) {
|
|
let src = self.shaders.get(name).unwrap();
|
|
for line in src.lines() {
|
|
if line.starts_with("#include ") {
|
|
let inc = line["#include ".len()..].trim();
|
|
self.get_internal(out, inc);
|
|
continue;
|
|
}
|
|
out.push_str(line);
|
|
out.push_str("\n");
|
|
}
|
|
}
|
|
}
|