fix alpha, remove sound for dbus toasts

src/backend/notifications.rs

@@ -158,7 +158,7 @@ impl NotificationManager {
 
                     let toast = Toast::new(msg.title, msg.content.unwrap_or_else(|| "".into()))
                         .with_timeout(msg.timeout.unwrap_or(5.))
-                        .with_sound(msg.volume.unwrap_or(0.) > 0.1);
+                        .with_sound(msg.volume.unwrap_or(-1.) >= 0.); // XSOverlay still plays at 0,
 
                     match sender.try_send(toast) {
                         Ok(_) => {}
@@ -187,9 +187,9 @@ fn parse_dbus(msg: &dbus::Message) -> anyhow::Result<Toast> {
     };
 
     Ok(Toast::new(title.into(), body.into())
-        .with_sound(true)
         .with_timeout(5.0)
         .with_opacity(1.0))
+    // leave the audio part to the desktop env
 }
 
 #[allow(non_snake_case)]

src/backend/openvr/mod.rs

@@ -173,8 +173,6 @@ pub fn openvr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
                         continue;
                     };
 
-                    log::info!("Creating overlay: {}", state.name);
-
                     overlays.add(OverlayData {
                         state,
                         backend,
@@ -183,7 +181,6 @@ pub fn openvr_run(running: Arc<AtomicBool>) -> Result<(), BackendError> {
                 }
                 TaskType::DropOverlay(sel) => {
                     if let Some(o) = overlays.mut_by_selector(&sel) {
-                        log::info!("Dropping overlay: {}", o.state.name);
                         o.destroy(&mut overlay_mngr);
                         overlays.drop_by_selector(&sel);
                     }

src/backend/openxr/swapchain.rs

@@ -7,6 +7,7 @@ use openxr as xr;
 use smallvec::SmallVec;
 use vulkano::{
     image::{sampler::Filter, sys::RawImage, view::ImageView, ImageCreateInfo, ImageUsage},
+    pipeline::graphics::color_blend::AttachmentBlend,
     Handle,
 };
 
@@ -38,6 +39,7 @@ pub(super) fn create_swapchain_render_data(
         shaders.get("vert_common").unwrap().clone(), // want panic
         shaders.get("frag_srgb").unwrap().clone(),   // want panic
         graphics.native_format,
+        Some(AttachmentBlend::alpha()),
     )?;
 
     let images = swapchain