107 lines
2.9 KiB
C#
107 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Profiling;
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namespace Coffee.UIExtensions
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{
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internal static class MeshHelper
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{
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public static long activeMeshIndices { get; private set; }
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private static readonly List<CombineInstanceEx> s_CachedInstance;
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private static int count;
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public static void Init()
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{
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}
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static MeshHelper()
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{
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s_CachedInstance = new List<CombineInstanceEx>(8);
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for (var i = 0; i < 8; i++)
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{
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s_CachedInstance.Add(new CombineInstanceEx());
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}
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}
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private static CombineInstanceEx Get(int index, long hash)
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{
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if (0 < count && s_CachedInstance[count - 1].hash == hash)
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return s_CachedInstance[count - 1];
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if (s_CachedInstance.Count <= count)
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{
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var newInst = new CombineInstanceEx();
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s_CachedInstance.Add(newInst);
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}
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var inst = s_CachedInstance[count];
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inst.hash = hash;
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if (inst.index != -1) return inst;
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inst.index = index;
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count++;
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return inst;
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}
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public static Mesh GetTemporaryMesh()
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{
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return MeshPool.Rent();
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}
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public static void Push(int index, long hash, Mesh mesh, Matrix4x4 transform)
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{
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if (mesh.vertexCount <= 0)
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{
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DiscardTemporaryMesh(mesh);
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return;
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}
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Profiler.BeginSample("[UIParticle] MeshHelper > Get CombineInstanceEx");
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var inst = Get(index, hash);
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Profiler.EndSample();
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Profiler.BeginSample("[UIParticle] MeshHelper > Push To Mesh Helper");
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inst.Push(mesh, transform);
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Profiler.EndSample();
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activeMeshIndices |= (long) 1 << inst.index;
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}
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public static void Clear()
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{
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count = 0;
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activeMeshIndices = 0;
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foreach (var inst in s_CachedInstance)
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{
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inst.Clear();
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}
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}
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public static void CombineMesh(Mesh result)
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{
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if (count == 0) return;
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for (var i = 0; i < count; i++)
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{
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Profiler.BeginSample("[UIParticle] MeshHelper > Combine Mesh Internal");
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s_CachedInstance[i].Combine();
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Profiler.EndSample();
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}
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Profiler.BeginSample("[UIParticle] MeshHelper > Combine Mesh");
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var cis = CombineInstanceArrayPool.Get(s_CachedInstance, count);
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result.CombineMeshes(cis, false, true);
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cis.Clear();
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Profiler.EndSample();
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result.RecalculateBounds();
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}
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public static void DiscardTemporaryMesh(Mesh mesh)
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{
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MeshPool.Return(mesh);
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}
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}
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}
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