fix: replace the 3.x sky with a vulkan setup (fixes performance issue)

game/Spatial_simple.tscn

@@ -1,12 +1,11 @@
-[gd_scene load_steps=9 format=3 uid="uid://do1x8k5fq0jtp"]
+[gd_scene load_steps=8 format=3 uid="uid://do1x8k5fq0jtp"]
 
 [ext_resource type="PackedScene" uid="uid://bh5qfdgmv1k1t" path="res://roads/road_segment_straight.tscn" id="1"]
 [ext_resource type="PackedScene" uid="uid://e6fhyicompkr" path="res://roads/road_segment.tscn" id="2"]
-[ext_resource type="Environment" path="res://dynamic_env.tres" id="3"]
+[ext_resource type="Script" path="res://vulkan sky/daynight.gd" id="2_r7md2"]
+[ext_resource type="Environment" uid="uid://c56vuaipcdg3k" path="res://vulkan sky/vulkan_sky_env.tres" id="3_6h6kk"]
 [ext_resource type="PackedScene" path="res://roads/intersection.tscn" id="4"]
-[ext_resource type="Script" path="res://scripts/WorldEnvironment.gd" id="7"]
 [ext_resource type="PackedScene" uid="uid://caucweey32fbc" path="res://car/kinematics/kinematic_car_base.tscn" id="9"]
-[ext_resource type="PackedScene" path="res://dynamic_sky/scene.tscn" id="10"]
 
 [sub_resource type="BoxShape3D" id="1"]
 size = Vector3(400, 0.1, 400)
@@ -24,14 +23,14 @@ shape = SubResource( "1" )
 
 [node name="city" type="Node3D" parent="."]
 
-[node name="scene" parent="city" instance=ExtResource( "10" )]
+[node name="scene" type="Node3D" parent="city"]
+script = ExtResource( "2_r7md2" )
 
-[node name="WorldEnvironment" type="WorldEnvironment" parent="city"]
-environment = ExtResource( "3" )
-script = ExtResource( "7" )
+[node name="WorldEnvironment" type="WorldEnvironment" parent="city/scene"]
+environment = ExtResource( "3_6h6kk" )
 
-[node name="DirectionalLight3D" type="DirectionalLight3D" parent="city"]
-transform = Transform3D(1, 0, 0, 0, -0.766044, 0.642788, 0, -0.642788, -0.766044, 0, 18.629, 0)
+[node name="DirectionalLight3D" type="DirectionalLight3D" parent="city/scene"]
+transform = Transform3D(1, 0, 0, 0, 0.866025, 0.5, 0, -0.5, 0.866025, 0, 18.629, 0)
 shadow_enabled = true
 shadow_bias = 0.0
 shadow_reverse_cull_face = true

game/vulkan sky/Node3D.tscn

@@ -1,48 +1,17 @@
-[gd_scene load_steps=7 format=3 uid="uid://cdnw34xyuxbh1"]
+[gd_scene load_steps=3 format=3 uid="uid://cdnw34xyuxbh1"]
 
-[ext_resource type="Texture2D" uid="uid://ds5nliexnxvyd" path="res://vulkan sky/textures/noise.png" id="1_5uyfw"]
 [ext_resource type="Script" path="res://vulkan sky/daynight.gd" id="1_7qdev"]
-[ext_resource type="Shader" uid="uid://btotycw2uifv3" path="res://vulkan sky/sky_custom.tres" id="1_xbnim"]
-
-[sub_resource type="ShaderMaterial" id="ShaderMaterial_n3wus"]
-shader = ExtResource( "1_xbnim" )
-shader_param/sky_top_color = Color(0.35, 0.46, 0.71, 1)
-shader_param/sky_horizon_color = Color(0.55, 0.69, 0.81, 1)
-shader_param/sky_curve = 0.09
-shader_param/sky_energy = 1.0
-shader_param/ground_bottom_color = Color(0.12, 0.12, 0.13, 1)
-shader_param/ground_horizon_color = Color(0.37, 0.33, 0.31, 1)
-shader_param/ground_curve = 0.02
-shader_param/ground_energy = 1.0
-shader_param/sun_angle_max = 1.74
-shader_param/sun_curve = 0.05
-shader_param/COVERAGE = 0.535
-shader_param/clouds_tex = ExtResource( "1_5uyfw" )
-
-[sub_resource type="Sky" id="Sky_y75us"]
-sky_material = SubResource( "ShaderMaterial_n3wus" )
-process_mode = 3
-radiance_size = 0
-
-[sub_resource type="Environment" id="Environment_r1ciq"]
-background_mode = 2
-sky = SubResource( "Sky_y75us" )
-ambient_light_color = Color(1, 1, 1, 1)
-glow_hdr_threshold = 2.2
-fog_light_color = Color(0.0221679, 0.0337797, 0.0744209, 1)
+[ext_resource type="Environment" uid="uid://c56vuaipcdg3k" path="res://vulkan sky/vulkan_sky_env.tres" id="2_46w70"]
 
 [node name="Node3D" type="Node3D"]
 script = ExtResource( "1_7qdev" )
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
-environment = SubResource( "Environment_r1ciq" )
-script = null
+environment = ExtResource( "2_46w70" )
 
 [node name="DirectionalLight3D" type="DirectionalLight3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 0.866024, 0.499999, 0, -0.499999, 0.866024, 0, 0, 0)
 light_color = Color(1, 0.878431, 0.329412, 1)
-script = null
 
 [node name="Camera3D" type="Camera3D" parent="."]
 transform = Transform3D(-1, 0, -8.74228e-08, 0, 1, 0, 8.74228e-08, 0, -1, 0, 1, 0)
-script = null

game/vulkan sky/vulkan_sky_env.tres

@@ -0,0 +1,31 @@
+[gd_resource type="Environment" load_steps=5 format=3 uid="uid://c56vuaipcdg3k"]
+
+[ext_resource type="Shader" uid="uid://btotycw2uifv3" path="res://vulkan sky/sky_custom.tres" id="1_jwecp"]
+[ext_resource type="Texture2D" uid="uid://ds5nliexnxvyd" path="res://vulkan sky/textures/noise.png" id="2_v4vqf"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_n3wus"]
+shader = ExtResource( "1_jwecp" )
+shader_param/sky_top_color = Color(0.35, 0.46, 0.71, 1)
+shader_param/sky_horizon_color = Color(0.55, 0.69, 0.81, 1)
+shader_param/sky_curve = 0.09
+shader_param/sky_energy = 1.0
+shader_param/ground_bottom_color = Color(0.12, 0.12, 0.13, 1)
+shader_param/ground_horizon_color = Color(0.37, 0.33, 0.31, 1)
+shader_param/ground_curve = 0.02
+shader_param/ground_energy = 1.0
+shader_param/sun_angle_max = 1.74
+shader_param/sun_curve = 0.05
+shader_param/COVERAGE = 0.535
+shader_param/clouds_tex = ExtResource( "2_v4vqf" )
+
+[sub_resource type="Sky" id="Sky_y75us"]
+sky_material = SubResource( "ShaderMaterial_n3wus" )
+process_mode = 3
+radiance_size = 0
+
+[resource]
+background_mode = 2
+sky = SubResource( "Sky_y75us" )
+ambient_light_color = Color(1, 1, 1, 1)
+glow_hdr_threshold = 2.2
+fog_light_color = Color(0.0221679, 0.0337797, 0.0744209, 1)