Add render scaling option

Assets/Prefabs/Player/Player.prefab

@@ -758,7 +758,7 @@ Camera:
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     m_Bits: 4294967295
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@@ -874,6 +874,7 @@ Transform:
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@@ -1244,6 +1245,96 @@ SphereCollider:
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   m_Radius: 0.5
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+  m_LensShift: {x: 0, y: 0}
+  m_FocalLength: 50
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+  far clip plane: 1
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+  orthographic size: 1
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+  m_OcclusionCulling: 0
+  m_StereoConvergence: 10
+  m_StereoSeparation: 0.022
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Assets/Prefabs/UI/Pause Menu.prefab

@@ -1190,6 +1190,79 @@ MonoBehaviour:
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   m_UseSpriteMesh: 0
   m_PixelsPerUnitMultiplier: 1
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+  m_SizeDelta: {x: 0, y: 0}
+  m_Pivot: {x: 0.5, y: 0.5}
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@@ -1762,12 +1835,12 @@ RectTransform:
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+  m_RootOrder: 8
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   m_AnchorMin: {x: 0, y: 0.5}
   m_AnchorMax: {x: 1, y: 0.5}
-  m_AnchoredPosition: {x: 25, y: -150}
+  m_AnchoredPosition: {x: 25, y: -125}
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+  m_SizeDelta: {x: -25, y: 40}
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@@ -1804,8 +1877,81 @@ RectTransform:
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   m_AnchorMax: {x: 1, y: 0.5}
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-  m_SizeDelta: {x: 0, y: 50}
+  m_SizeDelta: {x: 0, y: 40}
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@@ -2330,8 +2476,8 @@ RectTransform:
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   m_AnchorMax: {x: 1, y: 0.5}
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@@ -2876,6 +3022,78 @@ MonoBehaviour:
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@@ -3095,6 +3313,7 @@ MonoBehaviour:
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+  RenderScale: {fileID: 4201047697799753434}
   MasterVolume: {fileID: 8445847009848297359}
   CampfireVolume: {fileID: 5289447238612992950}
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@@ -3112,6 +3331,106 @@ MonoBehaviour:
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Assets/Scripts/Options.cs

@@ -5,6 +5,7 @@ public class Options : MonoBehaviour {
     public bool InvertMouseY { get; set; }
     public bool CameraBobbing { get; set; }
     public float MouseSensitivity { get; set; }
+    public float RenderScale { get; set; }
     public float MasterVolume { get; set; }
     public float CampfireVolume { get; set; }
     public float AmbientVolume { get; set; }
@@ -16,6 +17,7 @@ public class Options : MonoBehaviour {
         InvertMouseY = false;
         CameraBobbing = true;
         MouseSensitivity = 2f;
+        RenderScale = 1f;
         MasterVolume = 0.3f;
         CampfireVolume = 1f;
         AmbientVolume = 1f;

Assets/Scripts/PauseMenu.cs

@@ -10,6 +10,7 @@ public class PauseMenu : MonoBehaviour {
     public Toggle InvertMouseY;
     public Toggle CameraBobbing;
     public Slider MouseSensitivity;
+    public Slider RenderScale;
     public Slider MasterVolume;
     public Slider CampfireVolume;
     public Slider AmbientVolume;
@@ -32,6 +33,7 @@ public class PauseMenu : MonoBehaviour {
         InvertMouseY.isOn = Options.InvertMouseY;
         CameraBobbing.isOn = Options.CameraBobbing;
         MouseSensitivity.value = Options.MouseSensitivity;
+        RenderScale.value = Options.RenderScale;
         MasterVolume.value = Options.MasterVolume;
         CampfireVolume.value = Options.CampfireVolume;
         AmbientVolume.value = Options.AmbientVolume;

Assets/Scripts/RenderScaler.cs

@@ -0,0 +1,48 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+/**
+ * <summary>
+ *  Blits a RenderTexture on the Camera in this GameObject.
+ *  The RenderingCamera field controls which Camera's render target is blitted.
+ *  The render target of RenderingCamera is scaled according to Options.RenderScale.
+ * </summary>
+ */
+[RequireComponent(typeof(Camera))]
+public class RenderScaler : MonoBehaviour {
+    public Options Options;
+    public Camera RenderingCamera;
+    public float CurrentRenderScale = -1f;
+
+    // 100ms between texture recreation should lessen the gpu load a bit
+    // when moving the slider around, but still give realtime (enough) feedback.
+    public float RenderScaleChangeCooldown = 0.1f;
+
+    private RenderTexture CameraTarget;
+    private float LastChange = 0;
+
+    private void Start() {
+        UpdateRenderTexture();
+    }
+
+    private void Update() {
+        if (Time.unscaledTime - LastChange > RenderScaleChangeCooldown && CurrentRenderScale != Options.RenderScale) {
+            LastChange = Time.unscaledTime;
+            UpdateRenderTexture();
+        }
+    }
+
+    private void UpdateRenderTexture() {
+        CurrentRenderScale = Options.RenderScale;
+        RenderingCamera.targetTexture.Release();
+        RenderingCamera.targetTexture.width = (int)(Screen.width * CurrentRenderScale);
+        RenderingCamera.targetTexture.height = (int)(Screen.height * CurrentRenderScale);
+        RenderingCamera.targetTexture.Create();
+    }
+
+    private void OnRenderImage(RenderTexture src, RenderTexture dst) {
+        Graphics.Blit(RenderingCamera.targetTexture, dst);
+    }
+
+}

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