static void HLODApply(bool stream, LODVolume node)
{
s_LODVolume.Clear();
s_LODVolume.Enqueue(node);
while (s_LODVolume.Count > 0)
{
LODVolume lodVolume = s_LODVolume.Dequeue();
foreach (var child in lodVolume.childVolumes)
{
if (child.combined == null && child.childVolumes.Count < 1)
{
continue;
}
s_LODVolume.Enqueue(child);
}
if (lodVolume.combined != null)
{
if (stream)
{
if (!lodVolume.combined.CheckState())
{
ChoiceQueue(lodVolume, lodVolume.combined);
}
continue;
}
lodVolume.combined.ApplyEnable();
}
}
}
static void SetHLODEnable(LODVolume node, bool bEnable)
{
if (node.combined != null)
{
SetLOGGroupEnable(node.combined, bEnable);
}
}
public static LODVolume Create(HLODGenerate hlodGenerate)
{
int volumeCount = hlodGenerate.m_LODVolumeCount++;
GameObject go = new GameObject(k_DefaultName + volumeCount, typeof(LODVolume));
LODVolume volume = go.GetComponent <LODVolume>();
volume.m_CurrHLODGenerate = hlodGenerate ? hlodGenerate : volume.m_CurrHLODGenerate;
return(volume);
}
static void SetLODEnable(LODVolume node, bool bEnable)
{
if (node.combined == null)
{
// 由于有一种情况是单个模型时，不会合并
// 所以这里如果没有合并的模型，就看看有没有单独的模型需要设置
foreach (var lodGroup in node.lodGroups)
{
SetLOGGroupEnable(lodGroup, bEnable);
}
}
}
//检查是否为所在树的贴图集
bool CheckInCurrLittleOctree(LODVolume lodVolume, TextureAtlasData rootData)
{
LODVolume[] parents = lodVolume.GetComponentsInParent <LODVolume>();
foreach (LODVolume p in parents)
{
if (p.gameObject == rootData.m_Root)//找到我是该大贴图的孩子
{
return(true);
}
}
return(false);
}
//选择卸载或加载队列
static void ChoiceQueue(LODVolume node, UnityLODGroupFast fast)
{
if (node.childTreeRoot == null)
{
node.childTreeRoot = node.gameObject.AddComponent <ChildTreeRoot>();
}
if (fast.EnabledVirtual)
{
node.childTreeRoot.AddLoadAsset(fast);
}
else
{
node.childTreeRoot.AddUnLoadAsset(fast);
}
}
/*生成SceneLOD接口,指定hlodGenerate*/
public void GenerateSceneLODByHLODGenerate(HLODGenerate hlodGenerate, Action <GameObject, GameObject> endCall = null)
{
m_CurrHLODGenerate = hlodGenerate;
#if UNITY_EDITOR
if (hlodGenerate.m_RootLODVolume)
{
m_RootVolume = hlodGenerate.m_RootLODVolume.GetComponent <LODVolume>();
}
else
{
m_RootVolume = null;
}
m_CreateRootVolumeForScene = SceneManager.GetActiveScene().name;
MonoBehaviourHelper.StartCoroutine(GenerateHLOD(hlodGenerate.m_Targets, endCall));
#endif
}
IEnumerator SetRootLODVolume()
{
if (m_RootVolume)
{
var rootVolumeTransform = m_RootVolume.transform;
var transformRoot = rootVolumeTransform.root;
if (transformRoot.GetComponent <HLODGenerate>())//已经是根节点
{
yield break;
}
// Handle the case where the BVH has grown
if (rootVolumeTransform != transformRoot)
{
m_RootVolume = transformRoot.GetComponent <LODVolume>();
}
yield break;
}
// Handle initialization or the case where the BVH has shrunk
LODVolume lodVolume = null;
var scene = SceneManager.GetActiveScene();
var rootGameObjects = scene.GetRootGameObjects();
foreach (var go in rootGameObjects)
{
if (!go)
{
continue;
}
lodVolume = go.GetComponent <LODVolume>();
if (lodVolume)
{
break;
}
yield return(null);
}
if (lodVolume)
{
m_RootVolume = lodVolume;
}
}
/*是否重新生成*/
bool IsReGenerate(LODVolume lodVolume, Texture2D[] textures, TextureAtlas atlas)
{
//父节点有使用不删除
Transform currParent = lodVolume.transform.parent;
LODVolume parentVolume = currParent.GetComponent <LODVolume>();
//自己是root，贴图数量不一样更新
//父节点没有合并，说明自己是子树的父节点，从自己开始
if (parentVolume == null || parentVolume.combined == null)
{
IEnumerable <Texture2D> residueOld = atlas.textures.Except(textures);
IEnumerable <Texture2D> residueNew = textures.Except(atlas.textures);
return(residueOld.Any() | residueNew.Any());
}
return(false);
}
//还原HLOD
public static void ComeBackHLODAsset(this HLODGenerate hlodGenerate, HLODGenerateEditor editor)
{
#if UNITY_EDITOR
if (hlodGenerate.m_RootLODVolume == null)
{
return;
}
#endif
Queue <LODVolume> queue = new Queue <LODVolume>();
#if UNITY_EDITOR
queue.Enqueue(hlodGenerate.m_RootLODVolume.GetComponent <LODVolume>());
#endif
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
foreach (var child in lodVolume.childVolumes)
{
queue.Enqueue(child);
}
if (lodVolume.combined == null)
{
continue;
}
GameObject obj = AssetDatabase.LoadAssetAtPath <GameObject>(lodVolume.combined._assetPath);
if (obj)
{
#if UNITY_EDITOR
obj = PrefabUtility.InstantiatePrefab(obj, hlodGenerate.m_HLODS.transform) as GameObject;
#endif
obj.transform.SetPositionAndRotation(lodVolume.combined.Pose.position, lodVolume.combined.Pose.rotation);
obj.transform.localScale = lodVolume.combined.Pose.scale;
obj.GetComponent <MeshRenderer>().enabled = false;
lodVolume.combined._hlodRoot = obj;
lodVolume.combined._lodGroup = obj.GetComponent <LODGroup>();
if (editor.m_DeleteStreamingAsset)
{
PrefabUtility.UnpackPrefabInstance(obj, PrefabUnpackMode.OutermostRoot, InteractionMode.AutomatedAction);
}
}
}
}
void SetChildDirty(LODVolume lv)
{
Queue <LODVolume> queue = new Queue <LODVolume>();
queue.Enqueue(lv);
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
foreach (LODVolume l in lodVolume.childVolumes)
{
if (l.lodGroups.Count <= 1)
{
continue;
}
l.dirty = true;
EditorUtility.DisplayProgressBar("设置需要更改的节点", l.name, 0.8f);
queue.Enqueue(l);
}
}
}
//还远原始资源
public static void ComeBackOriginalAsset(this HLODGenerate hlodGenerate)
{
#if UNITY_EDITOR
LODVolume root = hlodGenerate.m_RootLODVolume.GetComponent <LODVolume>();
foreach (var lodGroup in root.lodGroups)
{
GameObject obj = AssetDatabase.LoadAssetAtPath <GameObject>(lodGroup._assetPath);
if (obj)
{
obj = PrefabUtility.InstantiatePrefab(obj, hlodGenerate.m_HLODS.transform) as GameObject;
obj.transform.parent = lodGroup._hlodRoot.transform;//生成流式资源后_hlodRoot引用的是父节点
obj.transform.SetPositionAndRotation(lodGroup.Pose.position, lodGroup.Pose.rotation);
obj.transform.localScale = lodGroup.Pose.scale;
lodGroup._hlodRoot = obj;
lodGroup._lodGroup = obj.GetComponent <LODGroup>();
lodGroup.Enabled = true;
}
}
#endif
}
/*生成prefab*/
void GeneratePrefab(LODVolume lodVolume, string savePath)
{
if (lodVolume.combined._hlodRoot == null)
{
return;
}
string namePath = null;
if (PrefabUtility.GetPrefabAssetPathOfNearestInstanceRoot(lodVolume.combined._hlodRoot) == "")
{
lodVolume.combined._hlodRoot.GetComponent <MeshRenderer>().enabled = true;
namePath = Path.Combine(savePath, lodVolume.combined._hlodRoot.name + ".prefab");
PrefabUtility.SaveAsPrefabAsset(lodVolume.combined._hlodRoot, namePath);
lodVolume.combined._assetPath = namePath.Replace("\\", "/");
}
DestroyImmediate(lodVolume.combined._hlodRoot);
lodVolume.combined._hlodRoot = null;
lodVolume.combined._lodGroup = null;
}
IEnumerator ShrinkByLodGroup()
{
var populatedChildrenNodes = 0;
foreach (Transform child in transform)
{
var lodVolume = child.GetComponent <LODVolume>();
if (lodGroups != null && lodGroups.Count > 0 && lodGroups.Count(r => r != null) > 0)
{
populatedChildrenNodes++;
}
yield return(null);
}
if (populatedChildrenNodes <= 1)
{
var lodVolumes = GetComponentsInChildren <LODVolume>();
LODVolume newRootVolume = null;
if (lodVolumes.Length > 0)
{
newRootVolume = lodVolumes[lodVolumes.Length - 1];
newRootVolume.transform.parent = null;
}
// Clean up child HLODs before destroying the GameObject; Otherwise, we'd leak into the scene
foreach (var lodVolume in lodVolumes)
{
if (lodVolume != newRootVolume)
{
lodVolume.CleanupHLOD();
}
}
DestroyImmediate(gameObject);
if (newRootVolume)
{
yield return(newRootVolume.ShrinkByLodGroup());
}
}
}
/*将精细用资源地址引用，并删除,把自己的位置存放父节点，以便还原使用*/
void GenrateFineModelRef(LODVolume rootLODVolume)
{
foreach (var fast in rootLODVolume.lodGroups)
{
if (fast._hlodRoot == null)
{
continue;
}
string path = PrefabUtility.GetPrefabAssetPathOfNearestInstanceRoot(fast._hlodRoot);
if (path == "")
{
Debug.LogError("找不到预制体！！");
continue;
}
Transform parent = fast._hlodRoot.transform.parent;
DestroyImmediate(fast._hlodRoot);
fast._assetPath = path.Replace("\\", "/");
fast._hlodRoot = parent ? parent.gameObject : null;
fast._lodGroup = null;
fast.Enabled = false;
}
}
/*更新流式资源*/
void UpdataStreamingAsset(HLODGenerate hlodGenerate)
{
string savePath = Path.Combine(hlodGenerate.m_StreamingAssetPath, s_StreamingDirectory);
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
LODVolume rootLODVolume = hlodGenerate.m_RootLODVolume.GetComponent <LODVolume>();
Queue <LODVolume> queue = new Queue <LODVolume>();
queue.Enqueue(rootLODVolume);
AssetDatabase.StartAssetEditing();
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
foreach (var child in lodVolume.childVolumes)
{
queue.Enqueue(child);
}
if (lodVolume.combined == null)
{
continue;
}
//导出资源
GeneratePrefab(lodVolume, savePath);
}
AssetDatabase.StopAssetEditing();
GenrateFineModelRef(hlodGenerate.m_RootLODVolume.GetComponent <LODVolume>());
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}
/*更新合批网格*/
void UpdataCombineMesh(HLODGenerate hlodGenerate)
{
if (!hlodGenerate.m_IsExportMesh)
{
return;
}
if (hlodGenerate.m_MeshAssetPath == "")
{
EditorUtility.DisplayDialog("警告", "没有选择mesh路径，请先选择路径", "是");
hlodGenerate.m_IsExportMesh = false;
return;
}
Queue <LODVolume> queue = new Queue <LODVolume>();
queue.Enqueue(hlodGenerate.m_RootLODVolume.GetComponent <LODVolume>());
//AssetDatabase.StartAssetEditing();
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
if (lodVolume.combined != null && lodVolume.combined._hlodRoot != null)
{
string path = AssetDatabase.GetAssetPath(lodVolume.combined._hlodRoot.GetComponent <MeshFilter>().sharedMesh);
if (lodVolume.lodGroups.Count < 1)//删除多出来的资源
{
if (path == "")
{
path = Path.Combine(hlodGenerate.m_MeshAssetPath, ExportHLODsByMesh.s_DirectoryName, lodVolume.combined._hlodRoot.name);
path = Path.ChangeExtension(path, "asset");
}
DestroyImmediate(lodVolume.GetComponent <LODGroup>());
DestroyImmediate(lodVolume.combined._hlodRoot);
lodVolume.combined._hlodRoot = null;
if (path != "")
{
AssetDatabase.DeleteAsset(path);
}
}
else if (path == "")//更新资源
{
//ExportHLODsByMesh.PersistHLODs(lodVolume.hlodRoot.transform, hlodGenerate.m_MeshAssetPath);
ExportHLODsByMesh.PersistHLODOfFbx(lodVolume.combined._hlodRoot.transform, hlodGenerate.m_MeshAssetPath);
if (!hlodGenerate.StreamUpdate.Contains(lodVolume))
{
hlodGenerate.StreamUpdate.Add(lodVolume);
}
}
EditorUtility.SetDirty(lodVolume);
}
foreach (LODVolume lv in lodVolume.childVolumes)
{
queue.Enqueue(lv);
}
}
//AssetDatabase.StopAssetEditing();
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}
static void OnCameraPreCull(Camera camera)
{
if (!Application.isPlaying)
{
return;
}
if (camera.cameraType != CameraType.Game || camera.tag != "MainCamera")
{
return;
}
// 刷新间隔没到，不做任何处理
if (CullData.m_lastCullTime + s_CullInterval > Time.realtimeSinceStartup && s_delayEnable)
{
return;
}
CullData.m_lastCullTime = Time.realtimeSinceStartup;
//判断摄像机参数是否有变化
var cameraTransform = camera.transform;
var cameraPosition = cameraTransform.position;
var cameraRotation = cameraTransform.rotation;
if (CullData.m_LastCameraPosition != cameraPosition)
{
CullData.m_LastCameraPosition = cameraPosition;
m_SceneDirty = true;
}
/*
* if (CullData.m_LastCameraRotation != cameraRotation)
* {
* CullData.m_LastCameraRotation = cameraRotation;
* m_SceneDirty = true;
* }
*/
if (CullData.m_LastFOV != camera.fieldOfView)
{
CullData.m_LastFOV = camera.fieldOfView;
m_SceneDirty = true;
}
//判断LOD精度设置是否有变化
if (CullData.m_LastLODBias != UnityEngine.QualitySettings.lodBias)
{
CullData.m_LastLODBias = UnityEngine.QualitySettings.lodBias;
m_SceneDirty = true;
}
if (CullData.m_LastHLODBias != s_HLOD_Bias)
{
CullData.m_LastHLODBias = s_HLOD_Bias;
m_SceneDirty = true;
}
if (m_SceneDirty)
{
foreach (var tree in Alls)
{
//判断是否超过距离缓冲，超过了再改变状态
if (Vector3.Distance(tree.m_LastCameraPosition, cameraPosition) < tree.s_CacheDistance)
{
continue;
}
tree.m_LastCameraPosition = cameraPosition;
LODVolume rootLODVolume = tree.m_RootVolume;
if (rootLODVolume == null)
{
continue;
}
tree.HLODPreCull(camera, camera.transform.position);
HLODApply(tree.m_Stream, rootLODVolume);
foreach (var lodGroup in rootLODVolume.lodGroups)
{
if (tree.m_Stream)
{
if (!lodGroup.CheckState())
{
ChoiceQueue(lodGroup._lodVolume, lodGroup);
}
continue;
}
lodGroup.ApplyEnable();
}
}
CullData.m_LastCameraPosition = cameraPosition;
CullData.m_LastCameraRotation = cameraRotation;
m_SceneDirty = false;
}
}
//TODO 准备将这一步移植到Job System
void HLODPreCull(Camera camera, Vector3 cameraPos)
{
s_AuxStack.Clear();
List <LODVolume> backSort = m_BackSort;
if (!s_HLODEnabled)//不开HLOD
{
foreach (var lv in backSort)
{
if (lv.combined)
{
SetLOGGroupEnable(lv.combined, false);
}
}
foreach (var lodGroup in m_RootVolume.lodGroups)
{
SetLOGGroupEnable(lodGroup, true);
}
return;
}
for (int index = 0; index < backSort.Count - 1; index++)
{
LODVolume curLv = backSort[index];
LODVolume nextLv = backSort[index + 1];
s_AuxStack.Push(curLv);
if (curLv.deep <= nextLv.deep)
{
//表示后续遍历还没遍历到当前节点的父节点，继续入栈
continue;
}
bool parentVisible = true;
//下降，表示遍历到了父节点，把栈顶前面几个相同的兄弟节点处理，然后将当前节点入栈
while (s_AuxStack.Count > 0)
{
LODVolume node = s_AuxStack.Pop();
if (node.combined == null && node.childVolumes.Count > 0)
{
//遇到没有合并的父节点
continue;
}
bool allChildInvisible = false;
if (node.childVolumes.Count == 0)
{
foreach (var lodGroup in node.lodGroups)
{
if (lodGroup.GetCurrentLOD(camera, cameraPos) != lodGroup.lodCount - 1)
{
// 只要有一个显示最精细模型
// 就认为不能显示HLOD对象
allChildInvisible = true;
parentVisible = false;
break;
}
}
// 修改所有原始模型的显示状态
foreach (var lodGroup in node.lodGroups)
{
SetLOGGroupEnable(lodGroup, allChildInvisible);
}
//设置合批模型状态
if (node.combined)
{
SetLOGGroupEnable(node.combined, !allChildInvisible);
}
}
else if (parentVisible != false) //不是叶子节点，且兄弟节点没有显示
{
if (node.combined.EnabledVirtual) //如果当前节点显示就不管,否则自己显示了，那么父节点需要隐藏
{
continue;
}
parentVisible = false;
}
LODVolume who = null;
if (s_AuxStack.Count > 0)
{
who = s_AuxStack.Peek();
}
else
{
break;
}
//下一个是上层节点
if (who.deep != node.deep)
{
break;
}
}
if (nextLv.combined != null)
{
s_AuxStack.Push(nextLv);
if (parentVisible)
{
//孩子合批都显示，所以隐藏孩子显示自己
foreach (var child in nextLv.childVolumes)
{
SetHLODEnable(child, false);
}
}
else
{
//父节点不能显示，激活叶子没有合并的LODGroup
foreach (var child in nextLv.childVolumes)
{
SetLODEnable(child, true);
}
}
SetLOGGroupEnable(nextLv.combined, parentVisible);
}
}
}
public IEnumerator GetTextureAtlas(HLODGenerate hg, LODVolume lodVolume, Texture2D[] textures, Texture2D[] normals, Action <TextureAtlasData> callback)
{
TextureAtlasData atlasData = null;
List <TextureAtlasData> atlasesData = null;
GetTextureAtlasList(hg, out atlasesData);
yield return(null);
foreach (var a in atlasesData)
{
if (a.m_State == TextureAtlasData.State.Delete)
{
continue;
}
//检查是否为所在树的贴图集
if (!CheckInCurrLittleOctree(lodVolume, a))
{
continue;
}
//是否重新生成
if (IsReGenerate(lodVolume, textures, a.m_Atlases))
{
a.m_State = TextureAtlasData.State.Delete;
break;
}
// At a minimum the atlas should have all of the textures requested, but can be a superset
if (!textures.Except(a.m_Atlases.textures).Any())
{
atlasData = a;
break;
}
yield return(null);
}
//m_Atlases.Remove(deleteAtlas);
if (atlasData == null)//没有找到图集就创建一个
{
atlasData = new TextureAtlasData(null, TextureAtlasData.State.Add);
atlasData.m_Material = new Material(Shader.Find("Standard"));
/*先序遍历，所有根节点就是第一个创建的对象，子节点会找到这个图集而不会继续创建*/
atlasData.m_Root = lodVolume.gameObject;
}
if (!atlasData.m_Atlases)
{
atlasData.m_Atlases = ScriptableObject.CreateInstance <TextureAtlas>();
TextureReadableSetting(textures);
//TextureReadableSetting(normals);
CombineTexture(textures, atlasData.m_Atlases, false, callback);
//CombineTexture(normals, atlasData.m_Atlases, true, callback);
atlasData.m_Material.mainTexture = atlasData.m_Atlases.textureAtlas;
//material.SetTexture("_NormalMap", atlasData.m_Atlases.textureAtlas_N);
atlasesData.Add(atlasData);
yield return(null);
}
if (callback != null)
{
callback(atlasData);
}
}
/*更新BVH后一些检查操作*/
public IEnumerator CheckAfterBVHUpdata(int treeHeight)
{
Queue <LODVolume> queue = new Queue <LODVolume>();
//将没用合批的父节点dirty设置成false
queue.Enqueue(this);
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
int deep = lodVolume.ChildDeep();
if (lodVolume.combined != null || deep <= treeHeight)
{
continue;
}
lodVolume.dirty = false;
foreach (LODVolume lv in lodVolume.childVolumes)
{
queue.Enqueue(lv);
}
EditorUtility.DisplayProgressBar("剔除不必要更改的节点", lodVolume.name, 0.3f);
}
yield return(null);
/*剔除空引用,广度遍历*/
queue.Clear();
queue = new Queue <LODVolume>();
queue.Enqueue(this);
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
lodVolume.lodGroups.RemoveAll(r =>
{//有物体删除了
if (r == null)
{
if (lodVolume.combined != null)
{
lodVolume.deleteDirty = true;
}
return(true);
}
return(false);
});
if (lodVolume.deleteDirty || lodVolume.dirty)
{
EditorUtility.DisplayProgressBar("设置需要更改的节点", lodVolume.name, 0.5f);
lodVolume.dirty = true;
SetChildDirty(lodVolume);
}
if (lodVolume.lodGroups.Count <= 1 && !lodVolume.deleteDirty)
{
lodVolume.dirty = false;
continue;
}
lodVolume.deleteDirty = false;
foreach (LODVolume lv in lodVolume.childVolumes)
{
queue.Enqueue(lv);
}
}
}
IEnumerator UpdateOctreeByLodGroup(GameObject[] gameObjects = null)
{
if (gameObjects == null || gameObjects.Count() < 1)
{
yield break;
}
if (!m_RootVolume)
{
if (m_CreateRootVolumeForScene == SceneManager.GetActiveScene().name)
{
#if UNITY_EDITOR
m_RootVolume = LODVolume.Create(m_CurrHLODGenerate);
#endif
}
else
{
yield break;
}
}
var lodGroups = m_FoundLODGroups;
lodGroups.Clear();
foreach (var objRoot in gameObjects)
{
LODGroup [] childGroups = objRoot.GetComponentsInChildren <LODGroup>();
lodGroups.AddRange(childGroups);
}
// Remove any renderers that should not be there (e.g. HLODs)
lodGroups.RemoveAll(r =>
m_ExcludedLODGroups.Contains(r)
);
lodGroups.RemoveAll(l =>
{
if (l)
{
// Check against previous collection
if (m_ExcludedLODGroups.Contains(l))
{
return(false);
}
var rds = l.GetLODs()[0].renderers;
foreach (var r in rds)
{
if (r == null)
{
return(false);
}
var mf = r.GetComponent <MeshFilter>();
if (!mf || (mf.sharedMesh && mf.sharedMesh.GetTopology(0) != MeshTopology.Triangles))
{
m_ExcludedLODGroups.Add(l);
return(true);
}
#if UNITY_EDITOR
//根据包围盒直径进行剔除不需要计算的模型
if (m_CurrHLODGenerate.m_BVHDivide.m_Cull)
{
bool result = m_CurrHLODGenerate.m_BVHDivide.CullByMesh(r.transform);
if (result)
{
m_ExcludedLODGroups.Add(l);
return(true);
}
}
#endif
}
}
return(false);
});
var existingLODGroups = m_ExistingLODGroups;
existingLODGroups.Clear();
existingLODGroups.UnionWith(m_RootVolume.lodGroups.Select(l => l._lodGroup));
var removed = m_RemovedLODGroups;
removed.Clear();
removed.UnionWith(m_ExistingLODGroups);
removed.ExceptWith(lodGroups);
var added = m_AddedLODGroups;
added.Clear();
added.UnionWith(lodGroups);
added.ExceptWith(existingLODGroups);
int count = 1;
foreach (var l in removed)
{
if (existingLODGroups.Contains(l))
{
#if UNITY_EDITOR
yield return(m_RootVolume.RemoveLodGroup(l));
#endif
// Check if the BVH shrunk
yield return(SetRootLODVolume());
}
}
count = 1;
foreach (var l in added)
{
EditorUtility.DisplayProgressBar("网格划分", l.name, (float)count++ / added.Count);
if (!existingLODGroups.Contains(l))
{
UnityLODGroupFast lodGroupFast = CreateInstance <UnityLODGroupFast>();
#if UNITY_EDITOR
lodGroupFast.Init(l, l.gameObject);
//UnityLODGroupFast lodGroupFast = new UnityLODGroupFast(l, l.gameObject);
yield return(m_RootVolume.AddLodGroup(lodGroupFast));
#endif
l.transform.hasChanged = false;
// Check if the BVH grew
yield return(SetRootLODVolume());
}
}
}
public IEnumerator Batch(HLODGenerate hg, LODVolume lodVolume)
{
GameObject go = lodVolume.combined._hlodRoot;
var renderers = go.GetComponentsInChildren <Renderer>();
var materials = new HashSet <Material>(renderers.SelectMany(r => r.sharedMaterials));
List <Texture2D> textures = new List <Texture2D>();
List <Texture2D> normals = new List <Texture2D>();
textures = new HashSet <Texture2D>(materials.Select(m =>
{
if (m)
{
return(m.mainTexture as Texture2D);
}
return(null);
}).Where(t => t != null)).ToList();
textures.Add(whiteTexture);
/*
* foreach(var t2d in textures)
* {
* foreach(var rd in renderers)
* {
* if(rd.sharedMaterial.mainTexture == t2d)
* {
* Texture2D t = rd.sharedMaterial.GetTexture("_BumpMap") as Texture2D;
* if (t == null)
* {
* var texture = new Texture2D(rd.sharedMaterial.mainTexture.width, rd.sharedMaterial.mainTexture.height, TextureFormat.RGB24, false, PlayerSettings.colorSpace == ColorSpace.Linear);
*
* t = texture;
* //texture.Apply();
* }
* else if(t.width != rd.sharedMaterial.mainTexture.width || t.height != rd.sharedMaterial.mainTexture.height)
* {
* int width = rd.sharedMaterial.mainTexture.width;
* int height = rd.sharedMaterial.mainTexture.height;
* var texture = new Texture2D(rd.sharedMaterial.mainTexture.width, rd.sharedMaterial.mainTexture.height, t.format, false, PlayerSettings.colorSpace == ColorSpace.Linear);
*
*
* for(int i = 0; i < height; i++)
* {
* for(int j = 0; j <width; j++)
* {
* //EditorUtility.DisplayProgressBar("fsdfasd", (height * width).ToString(), (float)(i * j) / (height * width));
* // Color newColor = t.GetPixelBilinear(j / width, i / height);
* texture.SetPixel(j, i, Color.white);
* }
* }
* //EditorUtility.ClearProgressBar();
* texture.Apply();
* t = texture;
* }
* normals.Add(t);
* break;
* }
* }
* }
* normals.Add(whiteTexture);
*/
TextureAtlasData atlasData = null;
yield return(TextureAtlasModule.instance.GetTextureAtlas(hg, lodVolume, textures.ToArray(), normals.ToArray(), a => atlasData = a));
var mainAtlasLookup = new Dictionary <Texture2D, Rect>();
//var normalAtlasLookup = new Dictionary<Texture2D, Rect>();
var atlasTextures = atlasData.m_Atlases.textures;
for (int i = 0; i < atlasTextures.Length; i++)
{
mainAtlasLookup[atlasTextures[i]] = atlasData.m_Atlases.uvs[i];
}
MeshFilter[] meshFilters = go.GetComponentsInChildren <MeshFilter>();
var combine = new List <CombineInstance>();
for (int i = 0; i < meshFilters.Length; i++)
{
var mf = meshFilters[i];
var sharedMesh = mf.sharedMesh;
if (!sharedMesh)
{
continue;
}
if (!sharedMesh.isReadable)
{
var assetPath = AssetDatabase.GetAssetPath(sharedMesh);
if (!string.IsNullOrEmpty(assetPath))
{
var importer = AssetImporter.GetAtPath(assetPath) as ModelImporter;
if (importer)
{
importer.isReadable = true;
importer.SaveAndReimport();
}
}
}
var ci = new CombineInstance();
var mesh = UnityEngine.Object.Instantiate(sharedMesh);
var mr = mf.GetComponent <MeshRenderer>();
var sharedMaterials = mr.sharedMaterials;
var uv = mesh.uv;
if (uv == null)
{
uv = mesh.uv2;
}
var colors = mesh.colors;
if (colors == null || colors.Length == 0)
{
colors = new Color[uv.Length];
}
var updated = new bool[uv.Length];
var triangles = new List <int>();
// Some meshes have submeshes that either aren't expected to render or are missing a material, so go ahead and skip
var subMeshCount = Mathf.Min(mesh.subMeshCount, sharedMaterials.Length);
for (int j = 0; j < subMeshCount; j++)
{
var sharedMaterial = sharedMaterials[Mathf.Min(j, sharedMaterials.Length - 1)];
var mainTexture = whiteTexture;
var materialColor = Color.white;
if (sharedMaterial)
{
var texture = sharedMaterial.mainTexture as Texture2D;
//sharedMaterial.texture
if (texture)
{
mainTexture = texture;
}
if (sharedMaterial.HasProperty("_Color"))
{
materialColor = sharedMaterial.color;
}
}
if (mesh.GetTopology(j) != MeshTopology.Triangles)
{
Debug.LogWarning("Mesh must have triangles", mf);
continue;
}
triangles.Clear();
mesh.GetTriangles(triangles, j);
var uvOffset = mainAtlasLookup[mainTexture];
foreach (var t in triangles)
{
if (!updated[t])
{
var uvCoord = uv[t];
if (mainTexture == whiteTexture)
{
// Sample at center of white texture to avoid sampling edge colors incorrectly
uvCoord.x = 0.5f;
uvCoord.y = 0.5f;
}
while (uvCoord.x < 0)
{
uvCoord.x += 1;
}
while (uvCoord.y < 0)
{
uvCoord.y += 1;
}
while (uvCoord.x > 1)
{
uvCoord.x -= 1;
}
while (uvCoord.y > 1)
{
uvCoord.y -= 1;
}
uvCoord.x = Mathf.Lerp(uvOffset.xMin, uvOffset.xMax, uvCoord.x);
uvCoord.y = Mathf.Lerp(uvOffset.yMin, uvOffset.yMax, uvCoord.y);
uv[t] = uvCoord;
if (mainTexture == whiteTexture)
{
colors[t] = materialColor;
}
else
{
colors[t] = Color.white;
}
updated[t] = true;
}
}
yield return(null);
}
mesh.uv = uv;
mesh.uv2 = null;
mesh.colors = colors;
ci.mesh = mesh;
ci.transform = mf.transform.localToWorldMatrix;
combine.Add(ci);
mf.gameObject.SetActive(false);
yield return(null);
}
var combinedMesh = new Mesh();
#if UNITY_2017_3_OR_NEWER
combinedMesh.indexFormat = IndexFormat.UInt32;
#endif
combinedMesh.CombineMeshes(combine.ToArray(), true, true);
combinedMesh.RecalculateBounds();
var meshFilter = go.AddComponent <MeshFilter>();
meshFilter.sharedMesh = combinedMesh;
for (int i = 0; i < meshFilters.Length; i++)
{
UnityEngine.Object.DestroyImmediate(meshFilters[i].gameObject);
}
var meshRenderer = go.AddComponent <MeshRenderer>();
meshRenderer.sharedMaterial = atlasData.m_Material;
atlasData.m_MeshRenderers.Add(meshRenderer);
}
/*更新BVH，对生成的BVH做后处理，广度遍历*/
public IEnumerator UpdateRootVolume(Action <List <LODVolume> > action)
{
Queue <LODVolume> queue = new Queue <LODVolume>();
//给每个子树添加ChildTreeRoot
queue.Enqueue(this);
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
if (lodVolume.combined != null)
{
ChildTreeRoot treeRoot = lodVolume.gameObject.AddComponent <ChildTreeRoot>();
continue;
}
foreach (LODVolume lv in lodVolume.childVolumes)
{
queue.Enqueue(lv);
}
EditorUtility.DisplayProgressBar("添加ChildTreeRoot", lodVolume.name, 0.3f);
}
//叶子节点，给每个UnityLODGroup做引用，同时所有子树的节点引用ChildTreeRoot
queue.Enqueue(this);
while (queue.Count > 0)
{
LODVolume lodVolume = queue.Dequeue();
foreach (LODVolume lv in lodVolume.childVolumes)
{
queue.Enqueue(lv);
}
if (lodVolume.childVolumes.Count < 1)
{
foreach (var fast in lodVolume.lodGroups)
{
fast._lodVolume = lodVolume;
}
}
lodVolume.childTreeRoot = lodVolume.GetComponentInParent <ChildTreeRoot>();
EditorUtility.DisplayProgressBar("引用ChildTreeRoot", lodVolume.name, 0.6f);
}
//设置节点深度
int curLevelNum = 0; //当前层的节点数
int curLevel = 1; //层数
queue.Enqueue(this);
while (queue.Count > 0)
{
curLevelNum = queue.Count;
while (curLevelNum-- > 0)
{
LODVolume lodVolume = queue.Dequeue();
lodVolume.deep = curLevel;
foreach (LODVolume lv in lodVolume.childVolumes)
{
queue.Enqueue(lv);
}
EditorUtility.DisplayProgressBar("深度设置", lodVolume.name, 0.8f);
}
curLevel++;
}
//构造后续遍历列表
List <LODVolume> backSort = new List <LODVolume>();
Stack <LODVolume> stack = new Stack <LODVolume>();
stack.Push(this);
while (stack.Count > 0)
{
LODVolume lodVolume = stack.Pop();
backSort.Add(lodVolume);
foreach (LODVolume lv in lodVolume.childVolumes)
{
stack.Push(lv);
}
EditorUtility.DisplayProgressBar("构造后续遍历列表", lodVolume.name, 0.9f);
}
backSort.Reverse();
if (action != null)
{
action.Invoke(backSort);
}
yield return(null);
}