Implemented Xorg initialization code

build.zig

@@ -51,13 +51,27 @@ pub fn build(b: *std.Build) void {
         }),
     });
     exe.root_module.addImport("sideros", sideros);
-    exe.root_module.addCSourceFile(.{ .file = b.path("ext/xdg-shell.c") });
-    exe.root_module.addIncludePath(b.path("ext"));
+    sideros.addIncludePath(b.path("ext"));
 
     exe.linkSystemLibrary("vulkan");
-    exe.linkSystemLibrary("wayland-client");
     exe.linkLibC();
 
+    const options = b.addOptions();
+
+    if (target.result.os.tag == .linux) {
+        const wayland = b.option(bool, "wayland", "Use Wayland to create the main window") orelse false;
+        if (wayland) {
+            exe.linkSystemLibrary("wayland-client");
+            exe.root_module.addCSourceFile(.{ .file = b.path("ext/xdg-shell.c") });
+        } else {
+            exe.linkSystemLibrary("xcb");
+            exe.linkSystemLibrary("xcb-icccm");
+        }
+        options.addOption(bool, "wayland", wayland);
+    }
+
+    sideros.addOptions("config", options);
+
     b.installArtifact(exe);
 
     const root_lib = b.addLibrary(.{

src/c.zig

@@ -1,4 +1,9 @@
 pub const c = @cImport({
     @cInclude("wayland-client.h");
     @cInclude("xdg-shell.h");
+    @cInclude("xcb/xcb.h");
+    @cInclude("vulkan/vulkan.h");
+    @cInclude("vulkan/vulkan_wayland.h");
+    @cInclude("vulkan/vulkan_xcb.h");
+    @cInclude("xcb/xcb_icccm.h");
 });

src/main.zig

@@ -1,11 +1,12 @@
 const std = @import("std");
-const config = @import("config");
+const config = @import("sideros").config;
 const math = @import("sideros").math;
 const Input = @import("sideros").Input;
 const mods = @import("sideros").mods;
 const ecs = @import("sideros").ecs;
-//const Renderer = @import("sideros").Renderer;
-const wayland = @import("wayland.zig");
+const builtin = @import("builtin");
+
+const platform = if (builtin.target.os.tag == .linux) (if (config.wayland) @import("wayland.zig") else @import("xorg.zig")) else @import("xorg.zig");
 
 //fn testSystem2(pool: *ecs.Pool) void {
 //    std.debug.print("{any}\n", .{pool.resources.input.isKeyDown(.a)});
@@ -66,5 +67,6 @@ pub fn main() !void {
     //     try pool.addComponent(entity, ecs.components.Position{ .x = 1.0, .y = 0.5, .z = 3.0 });
     //     try pool.addComponent(entity, ecs.components.Speed{ .speed = 5.0 });
     // }
-    try wayland.init(allocator);
+
+    try platform.init(allocator);
 }

src/renderer/Mesh.zig

@@ -1,4 +1,4 @@
-const c = @import("c.zig").c;
+const c = @import("sideros").c;
 const std = @import("std");
 const vk = @import("vulkan.zig");
 const gltf = @import("gltf.zig");

src/renderer/Renderer.zig

@@ -1,4 +1,4 @@
-const c = @import("c.zig");
+const c = @import("sideros").c;
 const ecs = @import("ecs");
 const std = @import("std");
 const vk = @import("vulkan.zig");
@@ -19,10 +19,10 @@ current_frame: u32,
 vertex_buffer: vk.Buffer,
 index_buffer: vk.Buffer,
 
-pub fn init(allocator: Allocator, display: ?*anyopaque, s: ?*anyopaque) !Renderer {
+pub fn init(comptime C: type, comptime S: type, allocator: Allocator, display: C, s: S) !Renderer {
     const instance = try vk.Instance.create(allocator);
 
-    const surface = try vk.Surface.create(instance, display, s);
+    const surface = try vk.Surface.create(C, S, instance, display, s);
 
     var physical_device = try vk.PhysicalDevice.pick(allocator, instance);
     const device = try physical_device.create_device(surface, allocator, 2);

src/renderer/Window.zig

@@ -1,4 +1,4 @@
-const c = @import("c.zig").c;
+const c = @import("sideros").c;
 const ecs = @import("ecs");
 const std = @import("std");
 

src/renderer/c.zig

@@ -1,5 +0,0 @@
-pub const c = @cImport({
-    @cInclude("vulkan/vulkan.h");
-    @cInclude("vulkan/vulkan_wayland.h");
-    @cInclude("wayland-client.h");
-});

src/renderer/vulkan.zig

@@ -1,5 +1,5 @@
 const std = @import("std");
-const c = @import("c.zig").c;
+const c = @import("sideros").c;
 const Window = @import("Window.zig");
 const Mesh = @import("Mesh.zig");
 const sideros = @import("sideros");
@@ -7,6 +7,7 @@ const Camera = @import("Camera.zig");
 const math = sideros.math;
 const Allocator = std.mem.Allocator;
 
+const config = sideros.config;
 const builtin = @import("builtin");
 const debug = (builtin.mode == .Debug);
 
@@ -73,8 +74,7 @@ pub const Instance = struct {
     handle: c.VkInstance,
 
     pub fn create(allocator: Allocator) !Instance {
-        const extensions = [_][*c]const u8 {c.VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME, c.VK_KHR_SURFACE_EXTENSION_NAME};
-        //const extensions = [_][:0]const u8 {"VK_KHR_wayland_surface\0", "VK_KHR_surface\0"};
+        const extensions = [_][*c]const u8 {if (config.wayland) c.VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME else c.VK_KHR_XCB_SURFACE_EXTENSION_NAME, c.VK_KHR_SURFACE_EXTENSION_NAME};
 
         // Querry avaliable extensions size
         var avaliableExtensionsCount: u32 = 0;
@@ -757,15 +757,25 @@ pub fn Swapchain(comptime n: usize) type {
 pub const Surface = struct {
     handle: c.VkSurfaceKHR,
 
-    pub fn create(instance: Instance, display: ?*anyopaque, surface: ?*anyopaque) !Surface {
+    pub fn create(comptime C: type, comptime S: type, instance: Instance, display: C, surface: S) !Surface {
         var handle: c.VkSurfaceKHR = undefined;
-        const create_info: c.VkWaylandSurfaceCreateInfoKHR = .{
-            .sType = c.VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR,
-            .display = @ptrCast(display),
-            .surface = @ptrCast(surface),
-        };
+        if (config.wayland) {
+            const create_info: c.VkWaylandSurfaceCreateInfoKHR = .{
+                .sType = c.VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR,
+                .display = display,
+                .surface = surface,
+            };
+
+            try mapError(c.vkCreateWaylandSurfaceKHR(instance.handle, &create_info, null, &handle));
+        } else {
+            const create_info: c.VkXcbSurfaceCreateInfoKHR = .{
+                .sType = c.VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR,
+                .connection = display,
+                .window = surface,
+            };
+            try mapError(c.vkCreateXcbSurfaceKHR(instance.handle, &create_info, null, &handle));
+        }
 
-        try mapError(c.vkCreateWaylandSurfaceKHR(instance.handle, &create_info, null, &handle));
         return .{
             .handle = handle,
         };

src/sideros.zig

@@ -3,3 +3,5 @@ pub const Input = @import("Input.zig");
 pub const mods = @import("mods");
 pub const ecs = @import("ecs");
 pub const Renderer = @import("renderer");
+pub const config = @import("config");
+pub const c = @import("c.zig").c;

src/wayland.zig

@@ -1,4 +1,4 @@
-const c = @import("c.zig").c;
+const c = @import("sideros").c;
 const std = @import("std");
 const Renderer = @import("sideros").Renderer;
 
@@ -136,7 +136,7 @@ pub fn init(allocator: std.mem.Allocator) !void {
         _ = c.wl_display_dispatch(display);
     }
 
-    var renderer = try Renderer.init(allocator, @ptrCast(display), @ptrCast(surface));
+    var renderer = try Renderer.init(@TypeOf(display), @TypeOf(surface), allocator, display, surface);
     defer renderer.deinit();
     try renderer.render();
 

src/xorg.zig

@@ -0,0 +1,39 @@
+const std = @import("std");
+const Renderer = @import("sideros").Renderer;
+const c = @import("sideros").c;
+
+pub fn init(allocator: std.mem.Allocator) !void {
+    const connection = c.xcb_connect(null, null);
+    defer c.xcb_disconnect(connection);
+
+    const setup = c.xcb_get_setup(connection);
+    const iter = c.xcb_setup_roots_iterator(setup);
+    const screen = iter.data;
+
+    const mask = c.XCB_CW_EVENT_MASK;
+    const value = c.XCB_EVENT_MASK_EXPOSURE;
+
+    const window = c.xcb_generate_id(connection);
+    _ = c.xcb_create_window(connection, c.XCB_COPY_FROM_PARENT, window, screen.*.root, 0, 0, 800, 600, 10, c.XCB_WINDOW_CLASS_INPUT_OUTPUT, screen.*.root_visual, mask, &value);
+
+    var hints: c.xcb_size_hints_t = undefined;
+    c.xcb_icccm_size_hints_set_min_size(&hints, 800, 600);
+    c.xcb_icccm_size_hints_set_max_size(&hints, 800, 600);
+    _ = c.xcb_icccm_set_wm_size_hints(connection, window, c.XCB_ATOM_WM_NORMAL_HINTS, &hints);
+
+    _ = c.xcb_map_window(connection, window);
+
+    _ = c.xcb_flush(connection);
+
+    var renderer = try Renderer.init(@TypeOf(connection), @TypeOf(window), allocator, connection, window);
+    defer renderer.deinit();
+
+    while (c.xcb_wait_for_event(connection)) |e| {
+        switch (e.*.response_type & ~@as(u32, 0x80)) {
+            else => {},
+        }
+
+        try renderer.render();
+        std.c.free(e);
+    }
+}