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Batching rework and optimization

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This commit is contained in:
Nahuel Rocchetti 2023-08-01 03:42:47 -03:00
parent 1c7589027c
commit cca1ae128b
2 changed files with 41 additions and 53 deletions
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90
Assets/Scripts/OpenTS2/Rendering/Batching.cs
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@ -12,14 +12,26 @@ namespace OpenTS2.Rendering
{
public Material Material;
public Mesh Mesh;
public MeshRenderer Renderer;
public Transform Transform;
public int SubMesh;
public BatchCandidate(Material material, Mesh mesh, Transform transform, int submesh)
public BatchCandidate(Material material, Mesh mesh, MeshRenderer renderer, Transform transform)
{
Material = material;
Mesh = mesh;
Transform = transform;
SubMesh = submesh;
Renderer = renderer;
}
}
public class BatchResult
{
public GameObject BatchedObjectsParent;
public List<MeshRenderer> DisabledRenderers = new List<MeshRenderer>();
public void RestoreVisibility()
{
foreach (var renderer in DisabledRenderers)
renderer.enabled = true;
}
}
@ -61,49 +73,44 @@ namespace OpenTS2.Rendering
/// <param name="parent">Parent transform that contains all meshes.</param>
/// <param name="flipFaces">Whether to flip faces. Set this to true if the meshes are using TS2's coordinate system.</param>
/// <returns>Parent GameObject containing all batched meshes.</returns>
public static GameObject Batch(Transform parent, bool flipFaces = false)
public static BatchResult Batch(Transform parent, bool flipFaces = false)
{
var result = new BatchResult();
// TODO - Maybe make this function multithreaded.
var candidatesByMaterial = new Dictionary<Material, List<BatchCandidate>>();
var nonBatchedCandidates = new List<BatchCandidate>();
var renderers = parent.GetComponentsInChildren<MeshRenderer>();
foreach (var element in renderers)
foreach (var renderer in renderers)
{
var filter = element.GetComponent<MeshFilter>();
var filter = renderer.GetComponent<MeshFilter>();
if (filter == null)
continue;
var materials = element.sharedMaterials;
for (var i = 0; i < materials.Length; i++)
if (filter.sharedMesh == null)
continue;
if (renderer.sharedMaterial == null)
continue;
if (filter.sharedMesh.subMeshCount > 1)
continue;
var mesh = filter.sharedMesh;
var material = renderer.sharedMaterial;
if (!CanBatchShader(material.shader))
continue;
var candidate = new BatchCandidate(material, mesh, renderer, filter.transform);
if (!candidatesByMaterial.TryGetValue(material, out List<BatchCandidate> candidates))
{
var mat = materials[i];
if (filter.sharedMesh.subMeshCount <= i)
continue;
var candidate = new BatchCandidate(mat, filter.sharedMesh, filter.transform, i);
if (!CanBatchShader(mat.shader))
{
nonBatchedCandidates.Add(candidate);
continue;
}
if (!candidatesByMaterial.TryGetValue(mat, out List<BatchCandidate> candidates))
{
candidates = new List<BatchCandidate>();
candidatesByMaterial[mat] = candidates;
}
candidates.Add(candidate);
candidates = new List<BatchCandidate>();
candidatesByMaterial[material] = candidates;
}
candidates.Add(candidate);
}
var finalGameObject = new GameObject("Batched Objects");
result.BatchedObjectsParent = finalGameObject;
foreach (var material in candidatesByMaterial)
{
if (material.Value.Count == 1)
{
MakeNonBatched(material.Value[0].Transform, material.Value[0].Mesh, material.Key);
continue;
}
var mesh = new Mesh();
var vertAmount = 0;
foreach(var candidate in material.Value)
foreach (var candidate in material.Value)
{
vertAmount += candidate.Mesh.vertexCount;
}
@ -127,18 +134,20 @@ namespace OpenTS2.Rendering
foreach (var candidate in batchCandidates)
{
result.DisabledRenderers.Add(candidate.Renderer);
candidate.Renderer.enabled = false;
var vertices = new List<Vector3>();
var normals = new List<Vector3>();
var uv = new List<Vector2>();
candidate.Mesh.GetVertices(vertices);
var triangles = candidate.Mesh.GetTriangles(candidate.SubMesh);
var triangles = candidate.Mesh.GetTriangles(0);
candidate.Mesh.GetNormals(normals);
candidate.Mesh.GetUVs(0, uv);
for (var i = 0; i < vertices.Count; i++)
{
vertices[i] = candidate.Transform.TransformPoint(vertices[i]);
}
for(var i=0;i<normals.Count;i++)
for (var i = 0; i < normals.Count; i++)
{
normals[i] = candidate.Transform.TransformDirection(normals[i]);
}
@ -161,24 +170,7 @@ namespace OpenTS2.Rendering
mesh.RecalculateBounds();
mesh.Optimize();
}
foreach(var nonBatched in nonBatchedCandidates)
{
MakeNonBatched(nonBatched.Transform, nonBatched.Mesh, nonBatched.Material);
}
return finalGameObject;
void MakeNonBatched(Transform transform, Mesh mesh, Material material)
{
var candidateGameObject = new GameObject($"Non-Batched: {material.name}", typeof(MeshRenderer), typeof(MeshFilter));
candidateGameObject.transform.SetParent(finalGameObject.transform);
candidateGameObject.transform.position = transform.position;
candidateGameObject.transform.rotation = transform.rotation;
candidateGameObject.transform.localScale = transform.lossyScale;
var renderer = candidateGameObject.GetComponent<MeshRenderer>();
var filter = candidateGameObject.GetComponent<MeshFilter>();
renderer.sharedMaterial = material;
filter.sharedMesh = mesh;
}
return result;
}
}
}

4
Assets/Scripts/OpenTS2/Scenes/NeighborhoodDecorations.cs
View file

@ -61,10 +61,6 @@ namespace OpenTS2.Scenes
var batchedDeco = Batching.Batch(_decorationsParent, flipFaces: true);
var batchedLots = Batching.Batch(_lotsParent, flipFaces: true);
var batchedRoads = Batching.Batch(_roadsParent, flipFaces: false);
_decorationsParent.gameObject.SetActive(false);
_roadsParent.gameObject.SetActive(false);
_lotsParent.gameObject.SetActive(false);
}
// Clean up the road materials we created. Textures should get garbage collected.