feat: detect nvidia gpu; if detected and monado vk layers not found show warning

src/ui/about_dialog.rs

@@ -5,7 +5,7 @@ use crate::{
     },
     device_prober::PhysicalXRDevice,
     linux_distro::LinuxDistro,
-    vulkaninfo::gpu_names,
+    vulkaninfo::VulkanInfo,
     xdg::XDG,
 };
 use relm4::prelude::*;
@@ -25,7 +25,7 @@ pub fn create_about_dialog() -> adw::AboutDialog {
         .build()
 }
 
-pub fn populate_debug_info(dialog: &adw::AboutDialog) {
+pub fn populate_debug_info(dialog: &adw::AboutDialog, vkinfo: Option<&VulkanInfo>) {
     if dialog.debug_info().len() > 0 {
         return;
     }
@@ -58,9 +58,14 @@ pub fn populate_debug_info(dialog: &adw::AboutDialog) {
             ),
             format!(
                 "GPUs: {}",
-                unsafe { gpu_names() }
-                    .ok()
-                    .map(|names| names.join(", "))
+                vkinfo
+                    .map(|i| i.gpu_names.join(", "))
+                    .unwrap_or("unknown".into())
+            ),
+            format!(
+                "Monado Vulkan Layers: {}",
+                vkinfo
+                    .map(|i| i.has_monado_vulkan_layers.to_string())
                     .unwrap_or("unknown".into())
             ),
             format!("Detected XR Devices: {}", {

src/ui/app.rs

@@ -47,6 +47,7 @@ use crate::{
         restore_runtime_entrypoint, set_runtime_entrypoint_launch_opts_from_profile,
     },
     util::file_utils::{setcap_cap_sys_nice_eip, setcap_cap_sys_nice_eip_cmd},
+    vulkaninfo::VulkanInfo,
     xr_devices::XRDevice,
 };
 use adw::{prelude::*, ResponseAppearance};
@@ -86,6 +87,7 @@ pub struct App {
     configure_wivrn_action: gtk::gio::SimpleAction,
     openxr_prober_worker: Option<JobWorker>,
     xrservice_ready: bool,
+    vkinfo: Option<VulkanInfo>,
 }
 
 #[derive(Debug)]
@@ -861,6 +863,16 @@ impl AsyncComponent for App {
         };
         let selected_profile = config.get_selected_profile(&profiles);
 
+        let vkinfo = {
+            match VulkanInfo::get() {
+                Ok(info) => Some(info),
+                Err(e) => {
+                    eprintln!("Failed to get Vulkan info: {e:#?}");
+                    None
+                }
+            }
+        };
+
         let mut model = App {
             application: init.application,
             app_win: root.clone(),
@@ -870,6 +882,7 @@ impl AsyncComponent for App {
                     config: config.clone(),
                     selected_profile: selected_profile.clone(),
                     root_win: root.clone().into(),
+                    vkinfo: vkinfo.clone(),
                 })
                 .forward(sender.input_sender(), |message| match message {
                     MainViewOutMsg::DoStartStopXRService => Msg::DoStartStopXRService,
@@ -879,6 +892,7 @@ impl AsyncComponent for App {
                     MainViewOutMsg::SaveProfile(p) => Msg::SaveProfile(p),
                     MainViewOutMsg::OpenLibsurviveSetup => Msg::OpenLibsurviveSetup,
                 }),
+            vkinfo,
             debug_view: DebugView::builder()
                 .launch(DebugViewInit {
                     profile: selected_profile,
@@ -926,8 +940,10 @@ impl AsyncComponent for App {
                 model.about_dialog,
                 #[strong(rename_to = app_win)]
                 model.app_win,
+                #[strong(rename_to = vkinfo)]
+                model.vkinfo,
                 move |_| {
-                    populate_debug_info(&about_dialog);
+                    populate_debug_info(&about_dialog, vkinfo.as_ref());
                     about_dialog.present(Some(&app_win));
                 }
             )

src/ui/main_view.rs

@@ -19,8 +19,11 @@ use crate::{
     paths::{get_data_dir, get_home_dir},
     profile::{LighthouseDriver, Profile, XRServiceType},
     stateless_action,
-    util::file_utils::{get_writer, mount_has_nosuid},
-    util::steamvr_utils::chaperone_info_exists,
+    util::{
+        file_utils::{get_writer, mount_has_nosuid},
+        steamvr_utils::chaperone_info_exists,
+    },
+    vulkaninfo::VulkanInfo,
     xr_devices::XRDevice,
 };
 use adw::{prelude::*, ResponseAppearance};
@@ -65,6 +68,8 @@ pub struct MainView {
     #[tracker::do_not_track]
     profile_export_action: gtk::gio::SimpleAction,
     xrservice_ready: bool,
+    #[tracker::do_not_track]
+    vkinfo: Option<VulkanInfo>,
 }
 
 #[derive(Debug)]
@@ -104,6 +109,7 @@ pub struct MainViewInit {
     pub config: Config,
     pub selected_profile: Profile,
     pub root_win: gtk::Window,
+    pub vkinfo: Option<VulkanInfo>,
 }
 
 impl MainView {
@@ -328,6 +334,34 @@ impl SimpleComponent for MainView {
                                 set_wrap_mode: gtk::pango::WrapMode::Word,
                             }
                         },
+                        gtk::Box {
+                            set_orientation: gtk::Orientation::Vertical,
+                            set_hexpand: true,
+                            set_vexpand: false,
+                            set_spacing: 12,
+                            add_css_class: "card",
+                            add_css_class: "padded",
+                            set_visible: model
+                                .vkinfo
+                                .as_ref()
+                                .is_some_and(
+                                    |i| i.has_nvidia_gpu && !i.has_monado_vulkan_layers
+                                ),
+                            warning_heading(),
+                            gtk::Label {
+                                set_label: concat!(
+                                    "An Nvidia GPU has been detected, but it ",
+                                    "seems you don't have the Monado Vulkan Layers ",
+                                    "installed on your system.\n\nInstall the ",
+                                    "Monado Vulkan Layers or your XR session will ",
+                                    "crash."
+                                ),
+                                add_css_class: "warning",
+                                set_xalign: 0.0,
+                                set_wrap: true,
+                                set_wrap_mode: gtk::pango::WrapMode::Word,
+                            }
+                        },
                         gtk::Box {
                             set_orientation: gtk::Orientation::Vertical,
                             set_hexpand: true,
@@ -812,6 +846,7 @@ impl SimpleComponent for MainView {
             xrservice_ready: false,
             profile_delete_action,
             profile_export_action,
+            vkinfo: init.vkinfo,
             tracker: 0,
         };
         let widgets = view_output!();

src/vulkaninfo.rs

@@ -3,27 +3,62 @@ use ash::{
     Entry,
 };
 
-/// # Safety
-///
-/// Dlopens the vulkan library, so this is inherently unsafe. Should be fine in
-/// most circumstances
-pub unsafe fn gpu_names() -> anyhow::Result<Vec<String>> {
-    let entry = Entry::load()?;
-    let instance = entry.create_instance(
-        &InstanceCreateInfo::default().application_info(&ApplicationInfo::default()),
-        None,
-    )?;
-    let names = instance
-        .enumerate_physical_devices()?
-        .into_iter()
-        .filter_map(|d| {
-            instance
-                .get_physical_device_properties(d)
-                .device_name_as_c_str()
-                .ok()
-                .map(|cs| cs.to_string_lossy().to_string())
-        })
-        .collect();
-    instance.destroy_instance(None);
-    Ok(names)
+#[derive(Debug, Clone)]
+pub struct VulkanInfo {
+    pub has_nvidia_gpu: bool,
+    pub has_monado_vulkan_layers: bool,
+    pub gpu_names: Vec<String>,
+}
+
+const NVIDIA_VENDOR_ID: u32 = 0x10de;
+
+impl VulkanInfo {
+    /// # Safety
+    ///
+    /// Dlopens the vulkan library, so this is inherently unsafe. Should be fine in
+    /// most circumstances
+    pub fn get() -> anyhow::Result<Self> {
+        let entry = unsafe { Entry::load() }?;
+        let instance = unsafe {
+            entry.create_instance(
+                &InstanceCreateInfo::default().application_info(&ApplicationInfo::default()),
+                None,
+            )
+        }?;
+        let mut has_nvidia_gpu = false;
+        let mut has_monado_vulkan_layers = false;
+        let gpu_names = unsafe { instance.enumerate_physical_devices() }?
+            .into_iter()
+            .filter_map(|d| {
+                let props = unsafe { instance.get_physical_device_properties(d) };
+                if props.vendor_id == NVIDIA_VENDOR_ID {
+                    has_nvidia_gpu = true;
+                }
+                if !has_monado_vulkan_layers {
+                    has_monado_vulkan_layers =
+                        unsafe { instance.enumerate_device_layer_properties(d) }
+                            .ok()
+                            .map(|layerprops| {
+                                layerprops.iter().any(|lp| {
+                                    lp.layer_name_as_c_str().is_ok_and(|name| {
+                                        name.to_string_lossy()
+                                            == "VK_LAYER_MND_enable_timeline_semaphore"
+                                    })
+                                })
+                            })
+                            == Some(true);
+                }
+                props
+                    .device_name_as_c_str()
+                    .ok()
+                    .map(|cs| cs.to_string_lossy().to_string())
+            })
+            .collect();
+        unsafe { instance.destroy_instance(None) };
+        Ok(Self {
+            gpu_names,
+            has_nvidia_gpu,
+            has_monado_vulkan_layers,
+        })
+    }
 }