apply pipewire transforms to screens

src/backend/openvr/lines.rs

@@ -11,7 +11,9 @@ use vulkano::format::Format;
 use vulkano::image::view::ImageView;
 use vulkano::image::ImageLayout;
 
-use crate::backend::overlay::{OverlayData, OverlayRenderer, OverlayState, SplitOverlayBackend};
+use crate::backend::overlay::{
+    FrameTransform, OverlayData, OverlayRenderer, OverlayState, SplitOverlayBackend,
+};
 use crate::graphics::WlxGraphics;
 use crate::state::AppState;
 
@@ -189,7 +191,10 @@ impl OverlayRenderer for StaticRenderer {
     fn view(&mut self) -> Option<Arc<ImageView>> {
         Some(self.view.clone())
     }
-    fn extent(&mut self) -> Option<[u32; 3]> {
-        Some(self.view.image().extent())
+    fn frame_transform(&mut self) -> Option<FrameTransform> {
+        Some(FrameTransform {
+            extent: self.view.image().extent(),
+            ..Default::default()
+        })
     }
 }

src/backend/openvr/overlay.rs

@@ -188,7 +188,7 @@ impl OverlayData<OpenVrOverlayData> {
     }
 
     pub(super) fn upload_transform(
-        &self,
+        &mut self,
         universe: ETrackingUniverseOrigin,
         overlay: &mut OverlayManager,
     ) {
@@ -197,7 +197,14 @@ impl OverlayData<OpenVrOverlayData> {
             return;
         };
 
-        let transform = Matrix3x4::from_affine(&self.state.transform);
+        let effective = self.state.transform
+            * self
+                .backend
+                .frame_transform()
+                .map(|f| f.transform)
+                .unwrap_or_default();
+
+        let transform = Matrix3x4::from_affine(&effective);
 
         if let Err(e) = overlay.set_transform_absolute(handle, universe, &transform) {
             log::error!(