refactor(openxr): make environment blend modes a completely runtime feature, like it should and remove the fb_passthrough plugin from the default oxr plugins as quests now support blendmode based passthrough

Signed-off-by: Schmarni <marnistromer@gmail.com>

crates/bevy_openxr/src/openxr/features/fb_passthrough.rs

@@ -11,9 +11,9 @@ use crate::resources::*;
 use crate::session::OxrSession;
 use crate::types::Result as OxrResult;
 
-pub struct OxrPassthroughPlugin;
+pub struct OxrFbPassthroughPlugin;
 
-impl Plugin for OxrPassthroughPlugin {
+impl Plugin for OxrFbPassthroughPlugin {
     fn build(&self, app: &mut App) {
         if app
             .world()
@@ -94,12 +94,12 @@ pub fn supports_passthrough(instance: &OxrInstance, system: OxrSystemId) -> OxrR
         return Ok(false);
     }
     unsafe {
-        let mut hand = openxr::sys::SystemPassthroughProperties2FB {
+        let mut properties = openxr::sys::SystemPassthroughProperties2FB {
             ty: SystemPassthroughProperties2FB::TYPE,
             next: std::ptr::null(),
             capabilities: PassthroughCapabilityFlagsFB::PASSTHROUGH_CAPABILITY,
         };
-        let mut p = openxr::sys::SystemProperties::out(&mut hand as *mut _ as _);
+        let mut p = openxr::sys::SystemProperties::out(&mut properties as *mut _ as _);
         cvt((instance.fp().get_system_properties)(
             instance.as_raw(),
             system.0,
@@ -107,10 +107,10 @@ pub fn supports_passthrough(instance: &OxrInstance, system: OxrSystemId) -> OxrR
         ))?;
         bevy::log::info!(
             "From supports_passthrough: Passthrough capabilities: {:?}",
-            hand.capabilities
+            properties.capabilities
         );
         Ok(
-            (hand.capabilities & PassthroughCapabilityFlagsFB::PASSTHROUGH_CAPABILITY)
+            (properties.capabilities & PassthroughCapabilityFlagsFB::PASSTHROUGH_CAPABILITY)
                 == PassthroughCapabilityFlagsFB::PASSTHROUGH_CAPABILITY,
         )
     }

crates/bevy_openxr/src/openxr/features/mod.rs

@@ -1,4 +1,4 @@
 pub mod handtracking;
 #[cfg(feature = "passthrough")]
-pub mod passthrough;
+pub mod fb_passthrough;
 pub mod overlay;