--wait argument

wayvr/src/backend/openvr/mod.rs

@@ -15,7 +15,7 @@ use vulkano::{Handle, VulkanObject, device::physical::PhysicalDevice};
 use wlx_common::overlays::ToastTopic;
 
 use crate::{
-    FRAME_COUNTER, RUNNING,
+    Args, FRAME_COUNTER, RUNNING,
     backend::{
         BackendError, XrBackend,
         input::interact,
@@ -57,14 +57,12 @@ pub fn openvr_uninstall() {
 }
 
 #[allow(clippy::too_many_lines, clippy::cognitive_complexity)]
-pub fn openvr_run(
-    show_by_default: bool,
-    headless: bool,
-    no_autostart: bool,
-) -> Result<(), BackendError> {
+pub fn openvr_run(args: &Args) -> Result<(), BackendError> {
     let app_type = EVRApplicationType::VRApplication_Overlay;
     let Ok(context) = ovr_overlay::Context::init(app_type) else {
-        log::warn!("Will not use OpenVR: Context init failed");
+        if !args.wait {
+            log::warn!("Will not use OpenVR: Context init failed");
+        }
         return Err(BackendError::NotSupported);
     };
 
@@ -94,9 +92,9 @@ pub fn openvr_run(
         AppState::from_graphics(gfx, gfx_extras, XrBackend::OpenVR)?
     };
 
-    app.session.no_autostart = no_autostart;
+    app.session.no_autostart = args.no_autostart;
 
-    if show_by_default {
+    if args.show {
         app.session.config.tutorial_graduated = true;
         app.tasks.enqueue_at(
             TaskType::Overlay(OverlayTask::ShowHide),
@@ -116,7 +114,7 @@ pub fn openvr_run(
 
     let _ = install_manifest(&mut app_mgr);
 
-    let mut overlays = OverlayWindowManager::<OpenVrOverlayData>::new(&mut app, headless)?;
+    let mut overlays = OverlayWindowManager::<OpenVrOverlayData>::new(&mut app, args.headless)?;
 
     let mut playspace = playspace::PlayspaceMover::new();
     playspace.playspace_changed(&mut compositor_mgr, &mut chaperone_mgr);

wayvr/src/backend/openxr/mod.rs

@@ -13,7 +13,7 @@ use vulkano::{Handle, VulkanObject};
 use wlx_common::overlays::{StereoMode, ToastTopic};
 
 use crate::{
-    FRAME_COUNTER, RUNNING,
+    Args, FRAME_COUNTER, RUNNING,
     backend::{
         BackendError, XrBackend,
         input::interact,
@@ -52,15 +52,13 @@ struct XrState {
 }
 
 #[allow(clippy::too_many_lines, clippy::cognitive_complexity)]
-pub fn openxr_run(
-    show_by_default: bool,
-    headless: bool,
-    no_autostart: bool,
-) -> Result<(), BackendError> {
+pub fn openxr_run(args: &Args) -> Result<(), BackendError> {
     let (xr_instance, system) = match helpers::init_xr() {
         Ok((xr_instance, system)) => (xr_instance, system),
         Err(e) => {
-            log::warn!("Will not use OpenXR: {e}");
+            if !args.wait {
+                log::warn!("Will not use OpenXR: {e}");
+            }
             return Err(BackendError::NotSupported);
         }
     };
@@ -70,11 +68,11 @@ pub fn openxr_run(
         AppState::from_graphics(gfx, gfx_extras, XrBackend::OpenXR)?
     };
 
-    app.session.no_autostart = no_autostart;
+    app.session.no_autostart = args.no_autostart;
 
     let modes = xr_instance.enumerate_environment_blend_modes(system, VIEW_TYPE)?;
 
-    if show_by_default {
+    if args.show {
         app.session.config.tutorial_graduated = true;
         app.tasks.enqueue_at(
             TaskType::Overlay(OverlayTask::ShowHide),
@@ -82,7 +80,7 @@ pub fn openxr_run(
         );
     }
 
-    let mut overlays = OverlayWindowManager::<OpenXrOverlayData>::new(&mut app, headless)?;
+    let mut overlays = OverlayWindowManager::<OpenXrOverlayData>::new(&mut app, args.headless)?;
     let mut lines = LinePool::new(&app)?;
     let mut current_lines = Vec::with_capacity(2);
 

wayvr/src/main.rs

@@ -34,6 +34,7 @@ use std::{
     path::PathBuf,
     process::Command,
     sync::atomic::{AtomicBool, AtomicUsize, Ordering},
+    time::{Duration, Instant},
 };
 
 use clap::Parser;
@@ -68,6 +69,10 @@ struct Args {
     #[arg(long)]
     show: bool,
 
+    /// Wait for a runtime to be available instead of exiting
+    #[arg(long)]
+    wait: bool,
+
     /// Uninstall OpenVR manifest and exit
     #[arg(long)]
     uninstall: bool,
@@ -150,39 +155,54 @@ fn auto_run(args: Args, used_backend: &mut Option<XrBackend>) {
     let mut tried_xr = false;
     let mut tried_vr = false;
 
-    #[cfg(feature = "openxr")]
-    if !args_get_openvr(&args) {
-        use crate::backend::{BackendError, openxr::openxr_run};
-        tried_xr = true;
-        match openxr_run(args.show, args.headless, args.no_autostart) {
-            Ok(()) => {
-                used_backend.replace(XrBackend::OpenXR);
-                return;
-            }
-            Err(BackendError::NotSupported) => (),
-            Err(e) => {
-                used_backend.replace(XrBackend::OpenXR);
-                log::error!("{e:?}");
-                return;
+    loop {
+        #[cfg(feature = "openxr")]
+        if !args_get_openvr(&args) {
+            use crate::backend::{BackendError, openxr::openxr_run};
+            tried_xr = true;
+            match openxr_run(&args) {
+                Ok(()) => {
+                    used_backend.replace(XrBackend::OpenXR);
+                    return;
+                }
+                Err(BackendError::NotSupported) => (),
+                Err(e) => {
+                    used_backend.replace(XrBackend::OpenXR);
+                    log::error!("{e:?}");
+                    return;
+                }
             }
         }
-    }
 
-    #[cfg(feature = "openvr")]
-    if !args_get_openxr(&args) {
-        use crate::backend::{BackendError, openvr::openvr_run};
-        tried_vr = true;
-        match openvr_run(args.show, args.headless, args.no_autostart) {
-            Ok(()) => {
-                used_backend.replace(XrBackend::OpenVR);
-                return;
+        #[cfg(feature = "openvr")]
+        if !args_get_openxr(&args) {
+            use crate::backend::{BackendError, openvr::openvr_run};
+            tried_vr = true;
+            match openvr_run(&args) {
+                Ok(()) => {
+                    used_backend.replace(XrBackend::OpenVR);
+                    return;
+                }
+                Err(BackendError::NotSupported) => (),
+                Err(e) => {
+                    used_backend.replace(XrBackend::OpenVR);
+                    log::error!("{e:?}");
+                    return;
+                }
             }
-            Err(BackendError::NotSupported) => (),
-            Err(e) => {
-                used_backend.replace(XrBackend::OpenVR);
-                log::error!("{e:?}");
-                return;
+        }
+
+        if args.wait {
+            // wait 5s unless we get signaled
+            let deadline = Instant::now() + Duration::from_secs(5);
+            while Instant::now() < deadline {
+                if !RUNNING.load(Ordering::Relaxed) {
+                    return;
+                }
+                std::thread::sleep(Duration::from_millis(100));
             }
+        } else {
+            break;
         }
     }