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// NOTE: If you are getting errors of the sort that say something like:
// "The type or namespace name `PostProcessing' does not exist in the namespace"
// it is because the Post Processing Stack V2 module has not been installed in your project.
//
// To make the errors go away, you can either:
// 1 - Download PostProcessing V2 and install it into your project
// or
// 2 - Delete the CinemachinePostProcessingV2 folder from your project
//
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Rendering.PostProcessing;
namespace Cinemachine.PostFX
{
/// <summary>
/// This behaviour is a liaison between Cinemachine with the Post-Processing v2 module. You must
/// have the Post-Processing V2 stack asset store package installed in order to use this behaviour.
///
/// As a component on the Virtual Camera, it holds
/// a Post-Processing Profile asset that will be applied to the Unity camera whenever
/// the Virtual camera is live. It also has the optional functionality of animating
/// the Focus Distance and DepthOfField properties of the Camera State, and
/// applying them to the current Post-Processing profile, provided that profile has a
/// DepthOfField effect that is enabled.
/// </summary>
[DocumentationSorting(DocumentationSortingAttribute.Level.UserRef)]
[ExecuteInEditMode]
[AddComponentMenu("")] // Hide in menu
[SaveDuringPlay]
public class CinemachinePostProcessing : CinemachineExtension
{
[Tooltip("If checked, then the Focus Distance will be set to the distance between the camera and the LookAt target. Requires DepthOfField effect in the Profile")]
public bool m_FocusTracksTarget;
[Tooltip("Offset from target distance, to be used with Focus Tracks Target. Offsets the sharpest point away from the LookAt target.")]
public float m_FocusOffset;
[Tooltip("This Post-Processing profile will be applied whenever this virtual camera is live")]
public PostProcessProfile m_Profile;
bool mCachedProfileIsInvalid = true;
PostProcessProfile mProfileCopy;
public PostProcessProfile Profile { get { return mProfileCopy != null ? mProfileCopy : m_Profile; } }
/// <summary>True if the profile is enabled and nontrivial</summary>
public bool IsValid { get { return m_Profile != null && m_Profile.settings.Count > 0; } }
/// <summary>Called by the editor when the shared asset has been edited</summary>
public void InvalidateCachedProfile() { mCachedProfileIsInvalid = true; }
void CreateProfileCopy()
{
DestroyProfileCopy();
PostProcessProfile profile = ScriptableObject.CreateInstance<PostProcessProfile>();
if (m_Profile != null)
{
foreach (var item in m_Profile.settings)
{
var itemCopy = Instantiate(item);
profile.settings.Add(itemCopy);
}
}
mProfileCopy = profile;
mCachedProfileIsInvalid = false;
}
void DestroyProfileCopy()
{
if (mProfileCopy != null)
RuntimeUtility.DestroyObject(mProfileCopy);
mProfileCopy = null;
}
protected override void OnDestroy()
{
base.OnDestroy();
DestroyProfileCopy();
}
protected override void PostPipelineStageCallback(
CinemachineVirtualCameraBase vcam,
CinemachineCore.Stage stage, ref CameraState state, float deltaTime)
{
//UnityEngine.Profiling.Profiler.BeginSample("CinemachinePostProcessing.PostPipelineStageCallback");
// Set the focus after the camera has been fully positioned.
// GML todo: what about collider?
if (stage == CinemachineCore.Stage.Aim)
{
if (!IsValid)
DestroyProfileCopy();
else
{
// Handle Follow Focus
if (!m_FocusTracksTarget)
DestroyProfileCopy();
else
{
if (mProfileCopy == null || mCachedProfileIsInvalid)
CreateProfileCopy();
DepthOfField dof;
if (mProfileCopy.TryGetSettings(out dof))
{
float focusDistance = m_FocusOffset;
if (state.HasLookAt)
focusDistance += (state.FinalPosition - state.ReferenceLookAt).magnitude;
dof.focusDistance.value = Mathf.Max(0, focusDistance);
}
}
// Apply the post-processing
state.AddCustomBlendable(new CameraState.CustomBlendable(this, 1));
}
}
//UnityEngine.Profiling.Profiler.EndSample();
}
static void OnCameraCut(CinemachineBrain brain)
{
// Debug.Log("Camera cut event");
PostProcessLayer postFX = GetPPLayer(brain);
if (postFX != null)
postFX.ResetHistory();
}
static void ApplyPostFX(CinemachineBrain brain)
{
//UnityEngine.Profiling.Profiler.BeginSample("CinemachinePostProcessing.ApplyPostFX");
PostProcessLayer ppLayer = GetPPLayer(brain);
if (ppLayer == null || !ppLayer.enabled || ppLayer.volumeLayer == 0)
return;
CameraState state = brain.CurrentCameraState;
int numBlendables = state.NumCustomBlendables;
List<PostProcessVolume> volumes = GetDynamicBrainVolumes(brain, ppLayer, numBlendables);
for (int i = 0; i < volumes.Count; ++i)
{
volumes[i].weight = 0;
volumes[i].sharedProfile = null;
volumes[i].profile = null;
}
PostProcessVolume firstVolume = null;
int numPPblendables = 0;
for (int i = 0; i < numBlendables; ++i)
{
var b = state.GetCustomBlendable(i);
CinemachinePostProcessing src = b.m_Custom as CinemachinePostProcessing;
if (!(src == null)) // in case it was deleted
{
PostProcessVolume v = volumes[i];
if (firstVolume == null)
firstVolume = v;
v.sharedProfile = src.Profile;
v.isGlobal = true;
v.priority = float.MaxValue-(numBlendables-i)-1;
v.weight = b.m_Weight;
++numPPblendables;
}
#if true // set this to true to force first weight to 1
// If more than one volume, then set the frst one's weight to 1
if (numPPblendables > 1)
firstVolume.weight = 1;
#endif
}
//UnityEngine.Profiling.Profiler.EndSample();
}
static string sVolumeOwnerName = "__CMVolumes";
static List<PostProcessVolume> sVolumes = new List<PostProcessVolume>();
static List<PostProcessVolume> GetDynamicBrainVolumes(
CinemachineBrain brain, PostProcessLayer ppLayer, int minVolumes)
{
//UnityEngine.Profiling.Profiler.BeginSample("CinemachinePostProcessing.GetDynamicBrainVolumes");
// Locate the camera's child object that holds our dynamic volumes
GameObject volumeOwner = null;
Transform t = brain.transform;
int numChildren = t.childCount;
sVolumes.Clear();
for (int i = 0; volumeOwner == null && i < numChildren; ++i)
{
GameObject child = t.GetChild(i).gameObject;
if (child.hideFlags == HideFlags.HideAndDontSave)
{
child.GetComponents(sVolumes);
if (sVolumes.Count > 0)
volumeOwner = child;
}
}
if (minVolumes > 0)
{
if (volumeOwner == null)
{
volumeOwner = new GameObject(sVolumeOwnerName);
volumeOwner.hideFlags = HideFlags.HideAndDontSave;
volumeOwner.transform.parent = t;
}
// Update the volume's layer so it will be seen
int mask = ppLayer.volumeLayer.value;
for (int i = 0; i < 32; ++i)
{
if ((mask & (1 << i)) != 0)
{
volumeOwner.layer = i;
break;
}
}
while (sVolumes.Count < minVolumes)
sVolumes.Add(volumeOwner.gameObject.AddComponent<PostProcessVolume>());
}
//UnityEngine.Profiling.Profiler.EndSample();
return sVolumes;
}
static Dictionary<CinemachineBrain, PostProcessLayer> mBrainToLayer
= new Dictionary<CinemachineBrain, PostProcessLayer>();
static PostProcessLayer GetPPLayer(CinemachineBrain brain)
{
PostProcessLayer layer = null;
if (mBrainToLayer.TryGetValue(brain, out layer))
{
#if UNITY_EDITOR
// Maybe they added it since we last checked
if (layer != null || Application.isPlaying)
#endif
return layer;
}
layer = brain.GetComponent<PostProcessLayer>();
mBrainToLayer[brain] = layer;
if (layer != null)
brain.m_CameraCutEvent.AddListener(OnCameraCut);
else
brain.m_CameraCutEvent.RemoveListener(OnCameraCut);
return layer;
}
#if UNITY_EDITOR
[UnityEditor.InitializeOnLoad]
class EditorInitialize { static EditorInitialize() { InitializeModule(); } }
#endif
[RuntimeInitializeOnLoadMethod]
static void InitializeModule()
{
// Afetr the brain pushes the state to the camera, hook in to the PostFX
CinemachineCore.CameraUpdatedEvent.RemoveListener(ApplyPostFX);
CinemachineCore.CameraUpdatedEvent.AddListener(ApplyPostFX);
}
}
}