1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

// SPDX-License-Identifier: Apache-2.0


//! `winit` integration.


use std::collections::HashSet;

use winit::window::Window;

use crate::prelude::v1_0::*;

/// Gets the required instance extensions for `winit` integration.

#[allow(deprecated)]
pub fn get_required_instance_extensions(
    entry: &Entry,
) -> VkResult<Vec<&'static vk::ExtensionName>> {
    let required = &[
        vk::EXT_METAL_SURFACE_EXTENSION,
        vk::KHR_ANDROID_SURFACE_EXTENSION,
        vk::KHR_GET_PHYSICAL_DEVICE_PROPERTIES2_EXTENSION,
        vk::KHR_GET_SURFACE_CAPABILITIES2_EXTENSION,
        vk::KHR_SURFACE_EXTENSION,
        vk::KHR_WAYLAND_SURFACE_EXTENSION,
        vk::KHR_WIN32_SURFACE_EXTENSION,
        vk::KHR_XCB_SURFACE_EXTENSION,
        vk::KHR_XLIB_SURFACE_EXTENSION,
        vk::MVK_IOS_SURFACE_EXTENSION,
        vk::MVK_MACOS_SURFACE_EXTENSION,
    ];

    let available = entry
        .enumerate_instance_extension_properties(None)?
        .into_iter()
        .map(|e| e.extension_name)
        .collect::<HashSet<_>>();

    Ok(required.iter().filter(|e| available.contains(*e)).collect())
}

/// Creates a surface for a `winit` window (Windows).

#[cfg(windows)]
pub fn create_surface(instance: &Instance, window: &Window) -> VkResult<vk::SurfaceKHR> {
    use vk::KhrWin32SurfaceExtension;
    use winit::platform::windows::WindowExtWindows;

    let info = vk::Win32SurfaceCreateInfoKHR::builder()
        .hinstance(window.hinstance())
        .hwnd(window.hwnd());
    instance.create_win32_surface_khr(&info, None)
}

/// Creates a surface for a `winit` window (Android).

#[cfg(target_os = "android")]
pub fn create_surface(instance: &Instance, window: &Window) -> VkResult<vk::SurfaceKHR> {
    unimplemented!()
}

/// Creates a surface for a `winit` window (iOS).

#[cfg(target_os = "ios")]
pub fn create_surface(instance: &Instance, window: &Window) -> VkResult<vk::SurfaceKHR> {
    unimplemented!()
}

/// Creates a surface for a `winit` window (macOS).

#[cfg(target_os = "macos")]
#[allow(deprecated)]
pub fn create_surface(instance: &Instance, window: &Window) -> VkResult<vk::SurfaceKHR> {
    use std::mem;
    use std::os::raw::c_void;

    use cocoa::appkit::{NSView, NSWindow};
    use cocoa::base::id;
    use metal::{CoreAnimationLayer, CoreAnimationLayerRef};
    use objc::runtime::YES;
    use vk::ExtMetalSurfaceExtension;
    use vk::MvkMacosSurfaceExtension;
    use winit::platform::macos::WindowExtMacOS;

    let (view, layer) = unsafe {
        let id = mem::transmute::<_, id>(window.ns_window());

        let view = id.contentView();

        let layer = CoreAnimationLayer::new();
        layer.set_contents_scale(view.backingScaleFactor());
        layer.set_edge_antialiasing_mask(0);
        layer.set_presents_with_transaction(false);
        layer.remove_all_animations();

        view.setLayer(mem::transmute(layer.as_ref()));
        view.setWantsLayer(YES);

        (&mut *window.ns_view(), layer)
    };

    if instance
        .extensions()
        .contains(&vk::EXT_METAL_SURFACE_EXTENSION)
    {
        // 1. Metal

        let layer = (layer.as_ref() as *const CoreAnimationLayerRef).cast::<c_void>();
        let info = vk::MetalSurfaceCreateInfoEXT::builder().layer(layer);
        instance.create_metal_surface_ext(&info, None)
    } else {
        // 2. macOS

        let info = vk::MacOSSurfaceCreateInfoMVK::builder().view(view);
        instance.create_mac_os_surface_mvk(&info, None)
    }
}

/// Creates a surface for a `winit` window (BSD / Linux).

#[cfg(all(
    unix,
    not(target_os = "android"),
    not(target_os = "ios"),
    not(target_os = "macos")
))]
pub fn create_surface(instance: &Instance, window: &Window) -> VkResult<vk::SurfaceKHR> {
    use vk::KhrWaylandSurfaceExtension;
    use vk::KhrXcbSurfaceExtension;
    use vk::KhrXlibSurfaceExtension;
    use winit::platform::unix::WindowExtUnix;

    match (window.wayland_display(), window.wayland_surface()) {
        (Some(display), Some(surface)) => {
            // 1. Wayland

            let info = vk::WaylandSurfaceCreateInfoKHR::builder()
                .display(display)
                .surface(surface);
            instance.create_wayland_surface_khr(&info, None)
        }
        _ => {
            if instance
                .extensions()
                .contains(&vk::KHR_XLIB_SURFACE_EXTENSION)
            {
                // 2. Xlib

                let info = vk::XlibSurfaceCreateInfoKHR::builder()
                    .dpy(unsafe { &mut (*(window.xlib_display().unwrap() as *mut _)) })
                    .window(window.xlib_window().unwrap());
                instance.create_xlib_surface_khr(&info, None)
            } else {
                // 3. XCB

                let info = vk::XcbSurfaceCreateInfoKHR::builder()
                    .connection(window.xcb_connection().unwrap())
                    .window(window.xlib_window().unwrap() as _);
                instance.create_xcb_surface_khr(&info, None)
            }
        }
    }
}