1use std::{
2 env,
3 path::{Path, PathBuf},
4 process::{self, Command},
5};
6
7use cbindgen::Config;
8
9fn main() {
10 generate_dispatch_bindings();
11 let header_path = generate_shader_bindings();
12 compile_metal_shaders(&header_path);
13}
14
15fn generate_dispatch_bindings() {
16 println!("cargo:rustc-link-lib=framework=System");
17 println!("cargo:rerun-if-changed=src/platform/mac/dispatch.h");
18
19 let bindings = bindgen::Builder::default()
20 .header("src/platform/mac/dispatch.h")
21 .allowlist_var("_dispatch_main_q")
22 .allowlist_var("DISPATCH_QUEUE_PRIORITY_DEFAULT")
23 .allowlist_function("dispatch_get_global_queue")
24 .allowlist_function("dispatch_async_f")
25 .parse_callbacks(Box::new(bindgen::CargoCallbacks))
26 .layout_tests(false)
27 .generate()
28 .expect("unable to generate bindings");
29
30 let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
31 bindings
32 .write_to_file(out_path.join("dispatch_sys.rs"))
33 .expect("couldn't write dispatch bindings");
34}
35
36fn generate_shader_bindings() -> PathBuf {
37 let output_path = PathBuf::from(env::var("OUT_DIR").unwrap()).join("scene.h");
38 let crate_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
39 let mut config = Config::default();
40 config.include_guard = Some("SCENE_H".into());
41 config.language = cbindgen::Language::C;
42 config.export.include.extend([
43 "Bounds".into(),
44 "Corners".into(),
45 "Edges".into(),
46 "Size".into(),
47 "Pixels".into(),
48 "PointF".into(),
49 "Hsla".into(),
50 "ContentMask".into(),
51 "Uniforms".into(),
52 "AtlasTile".into(),
53 "ShadowInputIndex".into(),
54 "Shadow".into(),
55 "QuadInputIndex".into(),
56 "Underline".into(),
57 "UnderlineInputIndex".into(),
58 "Quad".into(),
59 "SpriteInputIndex".into(),
60 "MonochromeSprite".into(),
61 "PolychromeSprite".into(),
62 ]);
63 config.no_includes = true;
64 config.enumeration.prefix_with_name = true;
65 cbindgen::Builder::new()
66 .with_src(crate_dir.join("src/scene.rs"))
67 .with_src(crate_dir.join("src/geometry.rs"))
68 .with_src(crate_dir.join("src/color.rs"))
69 .with_src(crate_dir.join("src/window.rs"))
70 .with_src(crate_dir.join("src/platform.rs"))
71 .with_src(crate_dir.join("src/platform/mac/metal_renderer.rs"))
72 .with_config(config)
73 .generate()
74 .expect("Unable to generate bindings")
75 .write_to_file(&output_path);
76
77 output_path
78}
79
80fn compile_metal_shaders(header_path: &Path) {
81 let shader_path = "./src/platform/mac/shaders.metal";
82 let air_output_path = PathBuf::from(env::var("OUT_DIR").unwrap()).join("shaders.air");
83 let metallib_output_path = PathBuf::from(env::var("OUT_DIR").unwrap()).join("shaders.metallib");
84
85 println!("cargo:rerun-if-changed={}", header_path.display());
86 println!("cargo:rerun-if-changed={}", shader_path);
87
88 let output = Command::new("xcrun")
89 .args([
90 "-sdk",
91 "macosx",
92 "metal",
93 "-gline-tables-only",
94 "-mmacosx-version-min=10.15.7",
95 "-MO",
96 "-c",
97 shader_path,
98 "-include",
99 &header_path.to_str().unwrap(),
100 "-o",
101 ])
102 .arg(&air_output_path)
103 .output()
104 .unwrap();
105
106 if !output.status.success() {
107 eprintln!(
108 "metal shader compilation failed:\n{}",
109 String::from_utf8_lossy(&output.stderr)
110 );
111 process::exit(1);
112 }
113
114 let output = Command::new("xcrun")
115 .args(["-sdk", "macosx", "metallib"])
116 .arg(air_output_path)
117 .arg("-o")
118 .arg(metallib_output_path)
119 .output()
120 .unwrap();
121
122 if !output.status.success() {
123 eprintln!(
124 "metallib compilation failed:\n{}",
125 String::from_utf8_lossy(&output.stderr)
126 );
127 process::exit(1);
128 }
129}