703 lines
25 KiB
C#
703 lines
25 KiB
C#
#if UNITY_2022_3_0 || UNITY_2022_3_1 || UNITY_2022_3_2 || UNITY_2022_3_3 || UNITY_2022_3_4 || UNITY_2022_3_5 || UNITY_2022_3_6 || UNITY_2022_3_7 || UNITY_2022_3_8 || UNITY_2022_3_9 || UNITY_2022_3_10
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#elif UNITY_2023_1_0 || UNITY_2023_1_1 || UNITY_2023_1_2 || UNITY_2023_1_3 || UNITY_2023_1_4 || UNITY_2023_1_5 || UNITY_2023_1_6 || UNITY_2023_1_7 || UNITY_2023_1_8 || UNITY_2023_1_9
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#elif UNITY_2023_1_10 || UNITY_2023_1_11 || UNITY_2023_1_12 || UNITY_2023_1_13 || UNITY_2023_1_14 || UNITY_2023_1_15 || UNITY_2023_1_16
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#elif UNITY_2022_3_OR_NEWER
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#define PS_BAKE_API_V2
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#endif
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using System;
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using System.Collections.Generic;
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using Coffee.UIParticleExtensions;
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using UnityEditor;
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using UnityEngine;
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using UnityEngine.Profiling;
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using UnityEngine.Rendering;
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using UnityEngine.UI;
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namespace Coffee.UIExtensions
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{
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[ExecuteAlways]
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[RequireComponent(typeof(RectTransform))]
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[RequireComponent(typeof(CanvasRenderer))]
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[AddComponentMenu("")]
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internal class UIParticleRenderer : MaskableGraphic
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{
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private static readonly List<Component> s_Components = new List<Component>();
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private static readonly CombineInstance[] s_CombineInstances = { new CombineInstance() };
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private static readonly List<Material> s_Materials = new List<Material>(2);
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private static MaterialPropertyBlock s_Mpb;
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private static readonly List<UIParticleRenderer> s_Renderers = new List<UIParticleRenderer>();
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private static readonly List<Color32> s_Colors = new List<Color32>();
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private static readonly Vector3[] s_Corners = new Vector3[4];
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private Material _currentMaterialForRendering;
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private bool _delay;
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private int _index;
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private bool _isTrail;
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private Bounds _lastBounds;
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private Material _modifiedMaterial;
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private UIParticle _parent;
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private ParticleSystem _particleSystem;
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private Vector3 _prevPsPos;
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private Vector3 _prevScale;
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private Vector2Int _prevScreenSize;
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private float _prevCanvasScale;
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private bool _prewarm;
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private ParticleSystemRenderer _renderer;
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public override Texture mainTexture
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{
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get { return _isTrail ? null : _particleSystem.GetTextureForSprite(); }
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}
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public override bool raycastTarget
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{
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get { return false; }
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}
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private Rect rootCanvasRect
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{
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get
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{
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s_Corners[0] = transform.TransformPoint(_lastBounds.min.x, _lastBounds.min.y, 0);
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s_Corners[1] = transform.TransformPoint(_lastBounds.min.x, _lastBounds.max.y, 0);
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s_Corners[2] = transform.TransformPoint(_lastBounds.max.x, _lastBounds.max.y, 0);
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s_Corners[3] = transform.TransformPoint(_lastBounds.max.x, _lastBounds.min.y, 0);
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if (canvas)
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{
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var worldToLocalMatrix = canvas.rootCanvas.transform.worldToLocalMatrix;
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for (var i = 0; i < 4; ++i)
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{
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s_Corners[i] = worldToLocalMatrix.MultiplyPoint(s_Corners[i]);
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}
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}
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var corner1 = (Vector2)s_Corners[0];
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var corner2 = (Vector2)s_Corners[0];
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for (var i = 1; i < 4; ++i)
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{
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if (s_Corners[i].x < corner1.x)
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{
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corner1.x = s_Corners[i].x;
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}
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else if (s_Corners[i].x > corner2.x)
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{
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corner2.x = s_Corners[i].x;
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}
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if (s_Corners[i].y < corner1.y)
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{
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corner1.y = s_Corners[i].y;
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}
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else if (s_Corners[i].y > corner2.y)
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{
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corner2.y = s_Corners[i].y;
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}
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}
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return new Rect(corner1, corner2 - corner1);
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}
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}
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public void Reset(int index = -1)
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{
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if (_renderer)
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{
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_renderer.enabled = true;
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}
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_parent = null;
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_particleSystem = null;
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_renderer = null;
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if (0 <= index)
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{
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_index = index;
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}
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//_emitter = null;
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if (this && isActiveAndEnabled)
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{
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material = null;
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workerMesh.Clear();
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canvasRenderer.SetMesh(workerMesh);
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_lastBounds = new Bounds();
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enabled = false;
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}
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else
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{
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ModifiedMaterial.Remove(_modifiedMaterial);
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_modifiedMaterial = null;
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_currentMaterialForRendering = null;
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}
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}
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protected override void OnEnable()
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{
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base.OnEnable();
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if (!s_CombineInstances[0].mesh)
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{
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s_CombineInstances[0].mesh = new Mesh
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{
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name = "[UIParticleRenderer] Combine Instance Mesh",
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hideFlags = HideFlags.HideAndDontSave
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};
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}
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_currentMaterialForRendering = null;
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}
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protected override void OnDisable()
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{
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base.OnDisable();
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ModifiedMaterial.Remove(_modifiedMaterial);
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_modifiedMaterial = null;
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_currentMaterialForRendering = null;
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}
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public static UIParticleRenderer AddRenderer(UIParticle parent, int index)
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{
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// Create renderer object.
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var go = new GameObject("[generated] UIParticleRenderer", typeof(UIParticleRenderer))
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{
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hideFlags = HideFlags.HideAndDontSave,
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layer = parent.gameObject.layer
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};
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// Set parent.
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var transform = go.transform;
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transform.SetParent(parent.transform, false);
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transform.localPosition = Vector3.zero;
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transform.localRotation = Quaternion.identity;
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transform.localScale = Vector3.one;
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// Add renderer component.
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var renderer = go.GetComponent<UIParticleRenderer>();
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renderer._parent = parent;
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renderer._index = index;
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return renderer;
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}
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/// <summary>
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/// Perform material modification in this function.
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/// </summary>
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public override Material GetModifiedMaterial(Material baseMaterial)
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{
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_currentMaterialForRendering = null;
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if (!IsActive() || !_parent)
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{
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ModifiedMaterial.Remove(_modifiedMaterial);
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_modifiedMaterial = null;
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return baseMaterial;
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}
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var modifiedMaterial = base.GetModifiedMaterial(baseMaterial);
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//
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var texture = mainTexture;
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if (texture == null && _parent.m_AnimatableProperties.Length == 0)
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{
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ModifiedMaterial.Remove(_modifiedMaterial);
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_modifiedMaterial = null;
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return modifiedMaterial;
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}
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//
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var id = _parent.m_AnimatableProperties.Length == 0 ? 0 : GetInstanceID();
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#if UNITY_EDITOR
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var props = EditorJsonUtility.ToJson(modifiedMaterial).GetHashCode();
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#else
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var props = 0;
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#endif
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modifiedMaterial = ModifiedMaterial.Add(modifiedMaterial, texture, id, props);
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ModifiedMaterial.Remove(_modifiedMaterial);
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_modifiedMaterial = modifiedMaterial;
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return modifiedMaterial;
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}
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public void Set(UIParticle parent, ParticleSystem ps, bool isTrail)
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{
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_parent = parent;
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maskable = parent.maskable;
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gameObject.layer = parent.gameObject.layer;
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_particleSystem = ps;
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_prewarm = _particleSystem.main.prewarm;
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#if UNITY_EDITOR
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if (Application.isPlaying)
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#endif
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{
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if (_particleSystem.isPlaying || _prewarm)
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{
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_particleSystem.Clear();
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_particleSystem.Pause();
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}
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}
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_renderer = ps.GetComponent<ParticleSystemRenderer>();
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_renderer.enabled = false;
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//_emitter = emitter;
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_isTrail = isTrail;
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_renderer.GetSharedMaterials(s_Materials);
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material = s_Materials[isTrail ? 1 : 0];
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s_Materials.Clear();
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// Support sprite.
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var tsa = ps.textureSheetAnimation;
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if (tsa.mode == ParticleSystemAnimationMode.Sprites && tsa.uvChannelMask == 0)
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{
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tsa.uvChannelMask = UVChannelFlags.UV0;
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}
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_prevScale = GetWorldScale();
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_prevPsPos = _particleSystem.transform.position;
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_prevScreenSize = new Vector2Int(Screen.width, Screen.height);
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_prevCanvasScale = canvas ? canvas.scaleFactor : 1f;
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_delay = true;
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canvasRenderer.SetTexture(null);
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enabled = true;
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}
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public void UpdateMesh(Camera bakeCamera)
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{
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// No particle to render: Clear mesh.
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if (
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!isActiveAndEnabled || !_particleSystem || !_parent
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|| !canvasRenderer || !canvas || !bakeCamera
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|| _parent.meshSharing == UIParticle.MeshSharing.Replica
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|| !transform.lossyScale.GetScaled(_parent.scale3DForCalc).IsVisible() // Scale is not visible.
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|| (!_particleSystem.IsAlive() && !_particleSystem.isPlaying) // No particle.
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|| (_isTrail && !_particleSystem.trails.enabled) // Trail, but it is not enabled.
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#if UNITY_2018_3_OR_NEWER
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|| canvasRenderer.GetInheritedAlpha() <
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0.01f // #102: Do not bake particle system to mesh when the alpha is zero.
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#endif
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)
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{
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Profiler.BeginSample("[UIParticleRenderer] Clear Mesh");
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workerMesh.Clear();
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canvasRenderer.SetMesh(workerMesh);
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_lastBounds = new Bounds();
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Profiler.EndSample();
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return;
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}
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var main = _particleSystem.main;
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var scale = GetWorldScale();
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var psPos = _particleSystem.transform.position;
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// Simulate particles.
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Profiler.BeginSample("[UIParticle] Bake Mesh > Simulate Particles");
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if (!_isTrail && _parent.canSimulate)
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{
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#if UNITY_EDITOR
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if (!Application.isPlaying)
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{
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SimulateForEditor(psPos - _prevPsPos, scale);
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}
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else
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#endif
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{
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ResolveResolutionChange(psPos, scale);
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Simulate(scale, _parent.isPaused || _delay);
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if (_delay && !_parent.isPaused)
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{
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Simulate(scale, _parent.isPaused);
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}
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// When the ParticleSystem simulation is complete, stop it.
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if (!main.loop
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&& main.duration <= _particleSystem.time
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&& (_particleSystem.IsAlive() || _particleSystem.particleCount == 0)
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)
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{
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_particleSystem.Stop(false);
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}
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}
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_prevScale = scale;
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_prevPsPos = psPos;
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_delay = false;
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}
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Profiler.EndSample();
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// Bake mesh.
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Profiler.BeginSample("[UIParticleRenderer] Bake Mesh");
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if (_isTrail && _parent.canSimulate && 0 < s_CombineInstances[0].mesh.vertexCount)
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{
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#if PS_BAKE_API_V2
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_renderer.BakeTrailsMesh(s_CombineInstances[0].mesh, bakeCamera, ParticleSystemBakeMeshOptions.BakeRotationAndScale);
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#else
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_renderer.BakeTrailsMesh(s_CombineInstances[0].mesh, bakeCamera, true);
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#endif
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}
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else if (_renderer.CanBakeMesh())
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{
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#if PS_BAKE_API_V2
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_renderer.BakeMesh(s_CombineInstances[0].mesh, bakeCamera, ParticleSystemBakeMeshOptions.BakeRotationAndScale);
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#else
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_renderer.BakeMesh(s_CombineInstances[0].mesh, bakeCamera, true);
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#endif
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}
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else
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{
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s_CombineInstances[0].mesh.Clear(false);
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}
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// Too many vertices to render.
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if (65535 <= s_CombineInstances[0].mesh.vertexCount)
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{
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s_CombineInstances[0].mesh.Clear(false);
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Debug.LogErrorFormat(this,
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"Too many vertices to render. index={0}, isTrail={1}, vertexCount={2}(>=65535)",
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_index,
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_isTrail,
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s_CombineInstances[0].mesh.vertexCount
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);
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s_CombineInstances[0].mesh.Clear(false);
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}
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Profiler.EndSample();
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// Combine mesh to transform. ([ParticleSystem local ->] world -> renderer local)
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Profiler.BeginSample("[UIParticleRenderer] Combine Mesh");
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if (_parent.canSimulate)
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{
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if (_parent.positionMode == UIParticle.PositionMode.Absolute)
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{
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s_CombineInstances[0].transform =
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canvasRenderer.transform.worldToLocalMatrix
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* GetWorldMatrix(psPos, scale);
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}
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else
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{
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var diff = _particleSystem.transform.position - _parent.transform.position;
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s_CombineInstances[0].transform =
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canvasRenderer.transform.worldToLocalMatrix
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* Matrix4x4.Translate(diff.GetScaled(scale - Vector3.one))
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* GetWorldMatrix(psPos, scale);
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}
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workerMesh.CombineMeshes(s_CombineInstances, true, true);
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workerMesh.RecalculateBounds();
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var bounds = workerMesh.bounds;
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var center = bounds.center;
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center.z = 0;
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bounds.center = center;
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var extents = bounds.extents;
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extents.z = 0;
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bounds.extents = extents;
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workerMesh.bounds = bounds;
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_lastBounds = bounds;
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// Convert linear color to gamma color.
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if (QualitySettings.activeColorSpace == ColorSpace.Linear)
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{
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Profiler.BeginSample("[UIParticleRenderer] Convert Linear to Gamma");
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workerMesh.GetColors(s_Colors);
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var count_c = s_Colors.Count;
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for (var i = 0; i < count_c; i++)
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{
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var c = s_Colors[i];
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c.r = c.r.LinearToGamma();
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c.g = c.g.LinearToGamma();
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c.b = c.b.LinearToGamma();
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s_Colors[i] = c;
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}
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workerMesh.SetColors(s_Colors);
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Profiler.EndSample();
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}
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GetComponents(typeof(IMeshModifier), s_Components);
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for (var i = 0; i < s_Components.Count; i++)
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{
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#pragma warning disable CS0618 // Type or member is obsolete
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((IMeshModifier)s_Components[i]).ModifyMesh(workerMesh);
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#pragma warning restore CS0618 // Type or member is obsolete
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}
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s_Components.Clear();
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}
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Profiler.EndSample();
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// Get grouped renderers.
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s_Renderers.Clear();
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if (_parent.useMeshSharing)
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{
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UIParticleUpdater.GetGroupedRenderers(_parent.groupId, _index, s_Renderers);
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}
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// Set mesh to the CanvasRenderer.
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Profiler.BeginSample("[UIParticleRenderer] Set Mesh");
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for (var i = 0; i < s_Renderers.Count; i++)
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{
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if (s_Renderers[i] == this) continue;
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s_Renderers[i].canvasRenderer.SetMesh(workerMesh);
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s_Renderers[i]._lastBounds = _lastBounds;
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}
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if (!_parent.canRender)
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{
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workerMesh.Clear();
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}
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canvasRenderer.SetMesh(workerMesh);
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Profiler.EndSample();
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// Update animatable material properties.
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Profiler.BeginSample("[UIParticleRenderer] Update Animatable Material Properties");
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#if UNITY_EDITOR
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if (_modifiedMaterial != material)
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{
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_renderer.GetSharedMaterials(s_Materials);
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material = s_Materials[_isTrail ? 1 : 0];
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s_Materials.Clear();
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SetMaterialDirty();
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}
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#endif
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UpdateMaterialProperties();
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if (_parent.useMeshSharing)
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{
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if (!_currentMaterialForRendering)
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{
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_currentMaterialForRendering = materialForRendering;
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}
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for (var i = 0; i < s_Renderers.Count; i++)
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{
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if (s_Renderers[i] == this) continue;
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s_Renderers[i].canvasRenderer.materialCount = 1;
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s_Renderers[i].canvasRenderer.SetMaterial(_currentMaterialForRendering, 0);
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}
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}
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Profiler.EndSample();
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s_Renderers.Clear();
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}
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/// <summary>
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/// Call to update the geometry of the Graphic onto the CanvasRenderer.
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/// </summary>
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protected override void UpdateGeometry()
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{
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}
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public override void Cull(Rect clipRect, bool validRect)
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{
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var cull = _lastBounds.extents == Vector3.zero
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|| !validRect
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|| !clipRect.Overlaps(rootCanvasRect, true);
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if (canvasRenderer.cull == cull) return;
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canvasRenderer.cull = cull;
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UISystemProfilerApi.AddMarker("MaskableGraphic.cullingChanged", this);
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onCullStateChanged.Invoke(cull);
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OnCullingChanged();
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}
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private Vector3 GetWorldScale()
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{
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Profiler.BeginSample("[UIParticleRenderer] GetWorldScale");
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var scale = _parent.scale3DForCalc.GetScaled(_parent.parentScale);
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Profiler.EndSample();
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return scale;
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}
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private Matrix4x4 GetWorldMatrix(Vector3 psPos, Vector3 scale)
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{
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var space = _particleSystem.GetActualSimulationSpace();
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if (_isTrail && _particleSystem.trails.worldSpace)
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{
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space = ParticleSystemSimulationSpace.World;
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}
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#if UNITY_EDITOR
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if (!Application.isPlaying)
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{
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switch (space)
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{
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case ParticleSystemSimulationSpace.World:
|
|
return Matrix4x4.Translate(psPos)
|
|
* Matrix4x4.Scale(scale)
|
|
* Matrix4x4.Translate(-psPos);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
switch (space)
|
|
{
|
|
case ParticleSystemSimulationSpace.Local:
|
|
return Matrix4x4.Translate(psPos)
|
|
* Matrix4x4.Scale(scale);
|
|
case ParticleSystemSimulationSpace.World:
|
|
return Matrix4x4.Scale(scale);
|
|
case ParticleSystemSimulationSpace.Custom:
|
|
return Matrix4x4.Translate(_particleSystem.main.customSimulationSpace.position.GetScaled(scale))
|
|
//* Matrix4x4.Translate(wpos)
|
|
* Matrix4x4.Scale(scale)
|
|
//* Matrix4x4.Translate(-wpos)
|
|
;
|
|
default:
|
|
throw new NotSupportedException();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// For world simulation, interpolate particle positions when the screen size is changed.
|
|
/// </summary>
|
|
/// <param name="psPos"></param>
|
|
/// <param name="scale"></param>
|
|
private void ResolveResolutionChange(Vector3 psPos, Vector3 scale)
|
|
{
|
|
var screenSize = new Vector2Int(Screen.width, Screen.height);
|
|
var isWorldSpace = _particleSystem.IsWorldSpace();
|
|
var canvasScale = _parent.canvas ? _parent.canvas.scaleFactor : 1f;
|
|
var resolutionChanged = _prevScreenSize != screenSize || _prevCanvasScale != canvasScale;
|
|
if (resolutionChanged && isWorldSpace)
|
|
{
|
|
// Update particle array size and get particles.
|
|
var size = _particleSystem.particleCount;
|
|
var particles = ParticleSystemExtensions.GetParticleArray(size);
|
|
_particleSystem.GetParticles(particles, size);
|
|
|
|
// Resolusion resolver:
|
|
// (psPos / scale) / (prevPsPos / prevScale) -> psPos * scale.inv * prevPsPos.inv * prevScale
|
|
var modifier = psPos.GetScaled(
|
|
scale.Inverse(),
|
|
_prevPsPos.Inverse(),
|
|
_prevScale);
|
|
for (var i = 0; i < size; i++)
|
|
{
|
|
var particle = particles[i];
|
|
particle.position = particle.position.GetScaled(modifier);
|
|
particles[i] = particle;
|
|
}
|
|
|
|
_particleSystem.SetParticles(particles, size);
|
|
|
|
// Delay: Do not progress in the frame where the resolution has been changed.
|
|
_delay = true;
|
|
_prevScale = scale;
|
|
_prevPsPos = psPos;
|
|
}
|
|
|
|
_prevCanvasScale = canvas ? canvas.scaleFactor : 1f;
|
|
_prevScreenSize = screenSize;
|
|
}
|
|
|
|
private void Simulate(Vector3 scale, bool paused)
|
|
{
|
|
var main = _particleSystem.main;
|
|
var deltaTime = paused
|
|
? 0
|
|
: main.useUnscaledTime
|
|
? Time.unscaledDeltaTime
|
|
: Time.deltaTime;
|
|
|
|
// Prewarm:
|
|
if (0 < deltaTime && _prewarm)
|
|
{
|
|
deltaTime += main.duration;
|
|
_prewarm = false;
|
|
}
|
|
|
|
// get world position.
|
|
var isLocalSpace = _particleSystem.IsLocalSpace();
|
|
var psTransform = _particleSystem.transform;
|
|
var originWorldPosition = psTransform.position;
|
|
var originWorldRotation = psTransform.rotation;
|
|
var emission = _particleSystem.emission;
|
|
var rateOverDistance = emission.enabled
|
|
&& 0 < emission.rateOverDistance.constant
|
|
&& 0 < emission.rateOverDistanceMultiplier;
|
|
if (rateOverDistance && !paused)
|
|
{
|
|
// (For rate-over-distance emission,) Move to previous scaled position, simulate (delta = 0).
|
|
var prevScaledPos = isLocalSpace
|
|
? _prevPsPos
|
|
: _prevPsPos.GetScaled(_prevScale.Inverse());
|
|
psTransform.SetPositionAndRotation(prevScaledPos, originWorldRotation);
|
|
_particleSystem.Simulate(0, false, false, false);
|
|
}
|
|
|
|
// Move to scaled position, simulate, revert to origin position.
|
|
var scaledPos = isLocalSpace
|
|
? originWorldPosition
|
|
: originWorldPosition.GetScaled(scale.Inverse());
|
|
psTransform.SetPositionAndRotation(scaledPos, originWorldRotation);
|
|
_particleSystem.Simulate(deltaTime, false, false, false);
|
|
psTransform.SetPositionAndRotation(originWorldPosition, originWorldRotation);
|
|
}
|
|
|
|
#if UNITY_EDITOR
|
|
private void SimulateForEditor(Vector3 diffPos, Vector3 scale)
|
|
{
|
|
// Extra world simulation.
|
|
var isWorldSpace = _particleSystem.IsWorldSpace();
|
|
if (isWorldSpace && 0 < Vector3.SqrMagnitude(diffPos))
|
|
{
|
|
Profiler.BeginSample("[UIParticle] Bake Mesh > Extra world simulation");
|
|
diffPos.x *= 1f - 1f / Mathf.Max(0.001f, scale.x);
|
|
diffPos.y *= 1f - 1f / Mathf.Max(0.001f, scale.y);
|
|
diffPos.z *= 1f - 1f / Mathf.Max(0.001f, scale.z);
|
|
|
|
var size = _particleSystem.particleCount;
|
|
var particles = ParticleSystemExtensions.GetParticleArray(size);
|
|
_particleSystem.GetParticles(particles, size);
|
|
for (var i = 0; i < size; i++)
|
|
{
|
|
var p = particles[i];
|
|
p.position += diffPos;
|
|
particles[i] = p;
|
|
}
|
|
|
|
_particleSystem.SetParticles(particles, size);
|
|
Profiler.EndSample();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
private void UpdateMaterialProperties()
|
|
{
|
|
if (_parent.m_AnimatableProperties.Length == 0) return;
|
|
|
|
if (s_Mpb == null)
|
|
{
|
|
s_Mpb = new MaterialPropertyBlock();
|
|
}
|
|
|
|
_renderer.GetPropertyBlock(s_Mpb);
|
|
if (s_Mpb.isEmpty) return;
|
|
|
|
// #41: Copy the value from MaterialPropertyBlock to CanvasRenderer
|
|
if (!_modifiedMaterial) return;
|
|
|
|
for (var i = 0; i < _parent.m_AnimatableProperties.Length; i++)
|
|
{
|
|
var ap = _parent.m_AnimatableProperties[i];
|
|
ap.UpdateMaterialProperties(_modifiedMaterial, s_Mpb);
|
|
}
|
|
|
|
s_Mpb.Clear();
|
|
}
|
|
}
|
|
}
|