static Texture2D SaveTexture(Texture2D texture, string name)
{
var path = SceneLOD.GetSceneLODPath() + name;
path = Path.ChangeExtension(path, "PNG");
var assetPath = "Assets" + Path.DirectorySeparatorChar + path;
var dataPath = Application.dataPath + Path.DirectorySeparatorChar + path;
var dirPath = Path.GetDirectoryName(dataPath);
if (Directory.Exists(dirPath) == false)
{
Directory.CreateDirectory(dirPath);
}
byte[] binary = texture.EncodeToPNG();
File.WriteAllBytes(dataPath, binary);
AssetDatabase.ImportAsset(assetPath);
return(AssetDatabase.LoadAssetAtPath <Texture2D>(assetPath));
}
public void Destroy()
{
MonoBehaviourHelper.StartCoroutine(ObjectUtils.FindGameObject("HLODs",
root => { DestroyImmediate(root); }));
Utilities.FileUtils.DeleteDirectory(Application.dataPath + Path.DirectorySeparatorChar + SceneLOD.GetSceneLODPath());
AssetDatabase.Refresh();
}
public IEnumerator Batch(GameObject hlodRoot, System.Action <float> progress)
{
yield return(PackTextures(hlodRoot));
Dictionary <Texture2D, Material> createdMaterials = new Dictionary <Texture2D, Material>();
for (int childIndex = 0; childIndex < hlodRoot.transform.childCount; ++childIndex)
{
var child = hlodRoot.transform.GetChild(childIndex);
var go = child.gameObject;
var renderers = go.GetComponentsInChildren <Renderer>();
var materials = new HashSet <Material>(renderers.SelectMany(r => r.sharedMaterials));
TextureAtlas atlas = packer.GetAtlas(go);
var atlasLookup = new Dictionary <Texture2D, Rect>();
var atlasTextures = atlas.textures;
for (int i = 0; i < atlasTextures.Length; i++)
{
atlasLookup[atlasTextures[i]] = atlas.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 mesh = Object.Instantiate(sharedMesh);
var mr = mf.GetComponent <MeshRenderer>();
var sharedMaterials = mr.sharedMaterials;
var uv = mesh.uv;
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 = GetTexture(sharedMaterial);
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 = atlasLookup[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;
}
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;
}
}
}
mesh.uv = uv;
mesh.uv2 = null;
mesh.colors = colors;
for (int j = 0; j < subMeshCount; ++j)
{
var ci = new CombineInstance();
ci.mesh = mesh;
ci.subMeshIndex = j;
ci.transform = mf.transform.localToWorldMatrix;
combine.Add(ci);
}
mf.gameObject.SetActive(false);
}
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++)
{
Object.DestroyImmediate(meshFilters[i].gameObject);
}
var meshRenderer = go.AddComponent <MeshRenderer>();
Material material = null;
if (createdMaterials.ContainsKey(atlas.textureAtlas) == false)
{
if (option.BatchMaterial == null)
{
material = new Material(Shader.Find("Custom/AutoLOD/SimpleBatcher"));
}
else
{
material = new Material(option.BatchMaterial);
}
material.mainTexture = atlas.textureAtlas;
string matName = hlodRoot.name + "_" + createdMaterials.Count;
AssetDatabase.CreateAsset(material, "Assets/" + SceneLOD.GetSceneLODPath() + matName + ".mat");
createdMaterials.Add(atlas.textureAtlas, material);
}
else
{
material = createdMaterials[atlas.textureAtlas];
}
meshRenderer.sharedMaterial = material;
string assetName = hlodRoot.name + "_" + go.name;
AssetDatabase.CreateAsset(combinedMesh,
"Assets/" + SceneLOD.GetSceneLODPath() + assetName + ".asset");
AssetDatabase.SaveAssets();
if (progress != null)
{
progress((float)childIndex / (float)hlodRoot.transform.childCount);
}
yield return(null);
}
}