Merge changes from main (#892)

* repair ScriptableShader.shader = null (#877)

* optimize updateInput (#878)

* optimize updateInput

* resize optimize

* __notePerStrum optimize

* Update StrumLine.hx

* NoteGroup optimize (#881)

* NoteGroup optimize

* CoolUtil.bound faster

* makes commit with github desktop W FRAKITS

* Use fastSinCos for notes (#889)

* Update Strum.hx

* Update Strum.hx

---------

Co-authored-by: HEIHUAa <112499486+HEIHUAa@users.noreply.github.com>
Co-authored-by: Frakits <90983918+Frakits@users.noreply.github.com>

source/funkin/backend/shaders/ScriptableShader.hx

@@ -30,6 +30,8 @@ class ScriptableShader extends FlxBasic implements IHScriptCustomBehaviour {
 			if((shader is CustomShader)) scriptName = cast(shader, CustomShader).fileName;
 			else throw "Missing name for shader script, please provide a scriptName, or use CustomShader";
 
+		this.shader = shader;
+
 		script = Script.create(Paths.script('shaders/$scriptName'));
 		script.setParent(shader);
 		script.set("shader", shader);