static void EncodeMesh(Mesh mesh, string directory)
{
Debug.Log($"Encode mesh {mesh.name} to {directory}");
if (!mesh.isReadable)
{
Debug.LogError($"Mesh {mesh.name} is not readable!");
return;
}
var dracoData = DracoEncoder.EncodeMesh(mesh);
if (dracoData.Length > 1)
{
var filename = string.IsNullOrEmpty(mesh.name) ? "Mesh-submesh-{0}.drc.bytes" : $"{mesh.name}-submesh-{{0}}.drc.bytes";
for (var submesh = 0; submesh < dracoData.Length; submesh++)
{
File.WriteAllBytes(Path.Combine(directory, string.Format(filename, submesh)), dracoData[submesh].data.ToArray());
dracoData[submesh].Dispose();
}
}
else
{
var filename = string.IsNullOrEmpty(mesh.name) ? "Mesh.drc.bytes" : $"{mesh.name}.drc.bytes";
File.WriteAllBytes(Path.Combine(directory, filename), dracoData[0].data.ToArray());
dracoData[0].Dispose();
}
}
static void CompressMeshFilters(MeshFilter[] meshFilters, string directory = null)
{
var instances = new Dictionary <TextAsset, DracoDecodeInstance>();
var meshDecoder = Object.FindObjectOfType <DracoDecoder>();
if (meshDecoder == null)
{
meshDecoder = new GameObject("MeshDecoder").AddComponent <DracoDecoder>();
}
directory = directory ?? $"Assets/{k_CompressedMeshesDirName}";
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
var dracoMeshes = new List <DracoMesh>();
var dracoFilesUpdated = false;
foreach (var meshFilter in meshFilters)
{
var mesh = meshFilter.sharedMesh;
if (mesh == null)
{
continue;
}
if (!mesh.isReadable)
{
Debug.LogError("Mesh is not readable!");
return;
}
var dracoMesh = new DracoMesh(meshFilter, directory);
var dracoFilesMissing = !dracoMesh.TryLoadDracoAssets();
if (dracoFilesMissing)
{
var scale = meshFilter.transform.localToWorldMatrix.lossyScale;
var dracoData = DracoEncoder.EncodeMesh(mesh, scale, .0001f);
if (dracoData != null && dracoData.Length > 0)
{
for (var submesh = 0; submesh < dracoData.Length; submesh++)
{
if (submesh > 0)
{
Debug.LogWarning("more than one submesh. not supported yet.");
}
File.WriteAllBytes(dracoMesh.GetSubmeshAssetPath(submesh), dracoData[submesh].data.ToArray());
dracoData[submesh].Dispose();
dracoFilesUpdated = true;
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}
}
else
{
Debug.LogError("Draco encoding failed");
return;
}
}
dracoMeshes.Add(dracoMesh);
}
if (dracoFilesUpdated)
{
foreach (var dracoMesh in dracoMeshes)
{
if (!dracoMesh.TryLoadDracoAssets())
{
Debug.LogError("Loading draco assets failed");
return;
}
}
}
foreach (var dracoMesh in dracoMeshes)
{
for (int submesh = 0; submesh < dracoMesh.submeshCount; submesh++)
{
// meshDecoder.AddTarget(dracoMesh.target,dracoMesh.dracoAssets[submesh]);
var dracoAsset = dracoMesh.dracoAssets[submesh];
if (instances.TryGetValue(dracoAsset, out var instance))
{
instance.AddTarget(dracoMesh.target);
}
else
{
var newInstance = ScriptableObject.CreateInstance <DracoDecodeInstance>();
var bounds = dracoMesh.target.sharedMesh.bounds;
newInstance.SetAsset(dracoAsset, bounds);
newInstance.AddTarget(dracoMesh.target);
instances[dracoAsset] = newInstance;
}
}
dracoMesh.target.mesh = null;
}
meshDecoder.instances = instances.Values.ToArray();
}