renderer/metal: load shaders from precompiled lib

pkg/macos/dispatch/c.zig

@@ -0,0 +1,3 @@
+pub usingnamespace @cImport({
+    @cInclude("dispatch/dispatch.h");
+});

pkg/macos/dispatch/data.zig

@@ -0,0 +1,31 @@
+const std = @import("std");
+const foundation = @import("../foundation.zig");
+const c = @import("c.zig");
+
+pub const Data = opaque {
+    pub const DESTRUCTOR_DEFAULT = c.DISPATCH_DATA_DESTRUCTOR_DEFAULT;
+
+    pub fn create(
+        data: []const u8,
+        queue: ?*anyopaque,
+        destructor: ?*anyopaque,
+    ) !*Data {
+        return dispatch_data_create(
+            data.ptr,
+            data.len,
+            queue,
+            destructor,
+        ) orelse return error.OutOfMemory;
+    }
+
+    pub fn release(data: *Data) void {
+        foundation.c.CFRelease(data);
+    }
+};
+
+extern "c" fn dispatch_data_create(
+    data: [*]const u8,
+    len: usize,
+    queue: ?*anyopaque,
+    destructor: ?*anyopaque,
+) ?*Data;

pkg/macos/dispatch/queue.zig

@@ -0,0 +1,8 @@
+const std = @import("std");
+const c = @import("c.zig");
+
+pub const Queue = *anyopaque; // dispatch_queue_t
+
+pub fn getMain() Queue {
+    return c.dispatch_get_main_queue().?;
+}