From 93457ecdcf2a759168ad59fa8b4fb15237136d5a Mon Sep 17 00:00:00 2001
From: griffi-gh <prasol258@gmail.com>
Date: Thu, 9 Mar 2023 00:31:19 +0100
Subject: [PATCH] Disable `parallel` feature by default, recalc camera matrix

---
 kubi-shared/Cargo.toml      |  2 +-
 kubi/Cargo.toml             |  3 ++-
 kubi/src/camera/matrices.rs | 21 ++++++++++++++-------
 3 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/kubi-shared/Cargo.toml b/kubi-shared/Cargo.toml
index 90617c0..a63255d 100644
--- a/kubi-shared/Cargo.toml
+++ b/kubi-shared/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 
 [dependencies]
 glam = { version = "0.23", features = ["debug-glam-assert", "fast-math", "serde"] }
-shipyard = { git = "https://github.com/leudz/shipyard", rev = "eb189f66" }
+shipyard = { git = "https://github.com/leudz/shipyard", rev = "eb189f66", default-features = false, features = ["std"] }
 strum = { version = "0.24", features = ["derive"] }
 postcard = { version = "1.0", features = ["alloc"] }
 serde = { version = "1.0", default-features = false, features = ["alloc", "derive"] }
diff --git a/kubi/Cargo.toml b/kubi/Cargo.toml
index 743daf8..f2ca9d0 100644
--- a/kubi/Cargo.toml
+++ b/kubi/Cargo.toml
@@ -14,7 +14,7 @@ image = { version = "0.24", default_features = false, features = ["png"] }
 strum = { version = "0.24", features = ["derive"] }
 hashbrown = "0.13"
 rayon = "1.6"
-shipyard = { git = "https://github.com/leudz/shipyard", rev = "eb189f66", features = ["thread_local"] }
+shipyard = { git = "https://github.com/leudz/shipyard", rev = "eb189f66", default-features = false, features = ["std", "proc", "thread_local"] }
 nohash-hasher = "0.2.0"
 anyhow = "1.0"
 flume = "0.10"
@@ -27,4 +27,5 @@ winapi = { version = "0.3" }
 
 [features]
 default = []
+parallel = ["shipyard/parallel"]
 nightly = ["glam/core-simd", "kubi-shared/nightly"]
diff --git a/kubi/src/camera/matrices.rs b/kubi/src/camera/matrices.rs
index 109c3de..b6ded27 100644
--- a/kubi/src/camera/matrices.rs
+++ b/kubi/src/camera/matrices.rs
@@ -1,6 +1,6 @@
 use glam::{Vec3, Mat4};
-use shipyard::{ViewMut, View, IntoIter, Workload, IntoWorkload, track};
-use crate::{transform::Transform, events::WindowResizedEvent};
+use shipyard::{ViewMut, View, IntoIter, Workload, IntoWorkload, track, UniqueView, SystemModificator};
+use crate::{transform::Transform, rendering::WindowSize, events::WindowResizedEvent};
 use super::Camera;
 
 //maybe parallelize these two?
@@ -18,11 +18,8 @@ fn update_view_matrix(
 
 fn update_perspective_matrix(
   mut vm_camera: ViewMut<Camera>,
-  resize: View<WindowResizedEvent>,
+  size: UniqueView<WindowSize>,
 ) {
-  let Some(&size) = resize.iter().next() else {
-    return
-  };
   for mut camera in (&mut vm_camera).iter() {
     camera.perspective_matrix = Mat4::perspective_rh_gl(
       camera.fov, 
@@ -33,9 +30,19 @@ fn update_perspective_matrix(
   }
 }
 
+fn need_perspective_calc(
+  v_camera: View<Camera>,
+  resize_event: View<WindowResizedEvent>,
+) -> bool {
+  (resize_event.len() > 0) ||
+  (v_camera.iter().any(|camera| {
+    camera.perspective_matrix == Mat4::default()
+  }))
+}
+
 pub fn update_matrices() -> Workload {
   (
     update_view_matrix, 
-    update_perspective_matrix,
+    update_perspective_matrix.run_if(need_perspective_calc),
   ).into_workload()
 }