fixup: Address comments by Selene.

crates/bevy_render/src/camera/camera.rs

@@ -228,7 +228,7 @@ impl Camera {
     /// [`world_to_ndc`](Self::world_to_ndc).
     ///
     /// Returns `None` if any of these conditions occur:
-    /// - The computed coordinates are beyond the near or far plane
+    /// - The computed coordinates are beyond the near or far plane defined by the [`Projection`]
     /// - The logical viewport size cannot be computed. See [`logical_viewport_size`](Camera::logical_viewport_size)
     /// - The world coordinates cannot be mapped to the Normalized Device Coordinates. See [`world_to_ndc`](Camera::world_to_ndc)
     /// May also panic if `glam_assert` is enabled. See [`world_to_ndc`](Camera::world_to_ndc).
@@ -240,7 +240,7 @@ impl Camera {
     ) -> Option<Vec2> {
         let target_size = self.logical_viewport_size()?;
         let ndc_space_coords = self.world_to_ndc(camera_transform, world_position)?;
-        // NDC z-values outside of 0 < z < 1 are outside the (implicit) camera frustum and are thus not in viewport-space
+        // NDC z-values outside of 0 < z < 1 are outside the (implicit, defined by the projection) camera frustum and are thus not in viewport-space
         if ndc_space_coords.z < 0.0 || ndc_space_coords.z > 1.0 {
             return None;
         }
@@ -263,8 +263,9 @@ impl Camera {
     ///
     /// Returns `None` if any of these conditions occur:
     /// - The logical viewport size cannot be computed. See [`logical_viewport_size`](Camera::logical_viewport_size)
-    /// - The near or far plane cannot be computed. This can happen if the `camera_transform`, the `world_position`, or the projection matrix defined by [`CameraProjection`] contain `NAN`.
-    /// Panics if the projection matrix is null and `glam_assert` is enabled.
+    /// - The near or far plane cannot be computed. This can happen if the `camera_transform`, the `world_position`, or the
+    ///   projection matrix defined by [`CameraProjection`] contain `NAN`, or the projection matrix cannot be inverted.
+    /// Panics if the projection matrix cannot be inverted and `glam_assert` is enabled.
     pub fn viewport_to_world(
         &self,
         camera_transform: &GlobalTransform,
@@ -343,8 +344,9 @@ impl Camera {
     /// To get the world space coordinates with the viewport position, you should use
     /// [`world_to_viewport`](Self::world_to_viewport).
     ///
-    /// Returns `None` if the `camera_transform`, the `world_position`, or the projection matrix defined by [`CameraProjection`] contain `NAN`.
-    /// Panics if the projection matrix is null and `glam_assert` is enabled.
+    /// Returns `None` if the `camera_transform`, the `world_position`, or the projection matrix defined by
+    /// [`CameraProjection`] contain `NAN`, or the projection matrix cannot be inverted.
+    /// Panics if the projection matrix cannot be inverted and `glam_assert` is enabled.
     pub fn ndc_to_world(&self, camera_transform: &GlobalTransform, ndc: Vec3) -> Option<Vec3> {
         // Build a transformation matrix to convert from NDC to world space using camera data
         let ndc_to_world =