rust_vulkan_test/build.rs

use std::process::Command;

fn main() {
    for shader in glob::glob("res/shaders/*").unwrap().filter_map(Result::ok) {
        if !shader.is_file() {
            continue;
        }

        let shader_file_name = shader.to_str().unwrap();

        let mut command = Command::new("glslc");
        command.arg(&shader);

        let out_file = match shader.extension().unwrap().to_str().unwrap() {
            "vert" => shader_file_name.replace(".vert", ".vert.spv"),
            "frag" => shader_file_name.replace(".frag", ".frag.spv"),
            _ => continue,
        };

        command.arg("-o");
        command.arg(out_file);
        command.output().unwrap();
    }
}