From a23c2e7da774f5134afc5e4a16501cb675c31db2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vojt=C4=9Bch=20Struh=C3=A1r?= <vojtechstruhar@gmail.com>
Date: Wed, 12 Feb 2025 14:21:19 +0100
Subject: [PATCH] Tonemapping fix

---
 level_3_rooms.tscn                | 10 +++++++++-
 portal_environment_adapter.gd     | 17 +++++++++++++++++
 portal_environment_adapter.gd.uid |  1 +
 3 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 portal_environment_adapter.gd
 create mode 100644 portal_environment_adapter.gd.uid

diff --git a/level_3_rooms.tscn b/level_3_rooms.tscn
index 391e4ab..b2ef611 100644
--- a/level_3_rooms.tscn
+++ b/level_3_rooms.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=11 format=3 uid="uid://27pb62xwsqd8"]
+[gd_scene load_steps=12 format=3 uid="uid://27pb62xwsqd8"]
 
 [ext_resource type="MeshLibrary" uid="uid://bedqgubx1g1uf" path="res://prototypes.tres" id="1_mqqdr"]
 [ext_resource type="Script" uid="uid://d2bvvjsibau8c" path="res://addons/simple-portal-system/scripts/portal.gd" id="2_b14t7"]
@@ -6,6 +6,7 @@
 [ext_resource type="PackedScene" uid="uid://cgdlowfuuorvi" path="res://player.tscn" id="3_b0o0q"]
 [ext_resource type="Script" uid="uid://bkv7t4hw21byg" path="res://addons/simple-portal-system/scripts/simple_portal_teleport.gd" id="4_snwvi"]
 [ext_resource type="PackedScene" uid="uid://b5x7fmpwck335" path="res://hud.tscn" id="6_phjvl"]
+[ext_resource type="Script" uid="uid://cili3lyodjqel" path="res://portal_environment_adapter.gd" id="7_xcmjo"]
 
 [sub_resource type="ProceduralSkyMaterial" id="ProceduralSkyMaterial_b0o0q"]
 sky_horizon_color = Color(0.662243, 0.671743, 0.686743, 1)
@@ -17,6 +18,8 @@ sky_material = SubResource("ProceduralSkyMaterial_b0o0q")
 [sub_resource type="Environment" id="Environment_snwvi"]
 background_mode = 2
 sky = SubResource("Sky_cgnft")
+tonemap_mode = 3
+tonemap_exposure = 1.5
 glow_enabled = true
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_cgnft"]
@@ -97,3 +100,8 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 3, 3, 3)
 light_color = Color(0.887552, 0.489512, 0.22965, 1)
 light_energy = 3.0
 omni_range = 4.0
+
+[node name="PortalEnvironmentAdapter" type="Node" parent="." node_paths=PackedStringArray("base", "portals")]
+script = ExtResource("7_xcmjo")
+base = NodePath("../WorldEnvironment")
+portals = [NodePath("../Portal_red"), NodePath("../Portal_orange")]
diff --git a/portal_environment_adapter.gd b/portal_environment_adapter.gd
new file mode 100644
index 0000000..3e4c0e8
--- /dev/null
+++ b/portal_environment_adapter.gd
@@ -0,0 +1,17 @@
+extends Node
+
+## Fixes the tonemapping being applied twice when looking through a portal.
+##
+## It copies the original environment (sky and stuff) and just puts in a noop
+## tonemapping (linear with exposure 1).
+
+@export var base: WorldEnvironment
+@export var portals: Array[Portal] = []
+
+func _ready() -> void:
+	var adapted_env: Environment = base.environment.duplicate(false)
+	adapted_env.tonemap_mode = Environment.TONE_MAPPER_LINEAR
+	adapted_env.tonemap_exposure = 1
+	
+	for p in portals:
+		p.exit_environment = adapted_env
diff --git a/portal_environment_adapter.gd.uid b/portal_environment_adapter.gd.uid
new file mode 100644
index 0000000..2497279
--- /dev/null
+++ b/portal_environment_adapter.gd.uid
@@ -0,0 +1 @@
+uid://cili3lyodjqel