Godot Version
4.6.3-stable
Question
Getting a severe stutter (~430ms) when a material that has been preloaded from a resource file is first seen in the viewport. When the same material is applied the second, third or n-th time, it works instantly.
I must be misunderstanding what preload does apprently. This is how I’m trying to use it:
class_name InteractionComponent extends Node
var parent : Node = null
var mesh : MeshInstance3D = null
# Preloading the material from a resource file
var highlight_material : ShaderMaterial = preload("res://assets/materials/interactable_highlight_shader.tres")
func _ready() -> void:
parent = get_parent()
connect_parent()
set_default_mesh()
# "focused" signal is emitted when a raycast extended from the center of the
# camera finds a collider. In other words, when the player is looking at an
# object. In this case the MeshInstance3D that this script is attached to.
func connect_parent() -> void:
parent.add_user_signal("focused")
parent.connect("focused", Callable(self, "in_range"))
# Finds the MeshInstance3D that will receive the material
func set_default_mesh() -> void:
if mesh:
pass
else:
for i in parent.get_children():
if i is MeshInstance3D:
mesh = i
# Applies a material to the overlay slot
func in_range() -> void:
mesh.material_overlay = highlight_material
This script is attached to a plain node which is a sibling of the MeshInstance3D that its targeting.
The ShaderMaterial in question is dead simple:
shader_type spatial;
void fragment() {
EMISSION = vec3(0.1, 0.99, 0.12);
ALPHA = 0.25;
}
I constructed this following a tutorial from stayathomedev and in his demonstration, it does not appear to cause any stuttering. Perhaps my computer is just crap or maybe its movie magic.
So the actual question is an appeal to the big brains here - how to load a (shader) material on demand in such a way that it does not cause stuttering the first time it is used?
