/// <summary>
/// Create Foliage mesh instances for a certain index and foliage size.
/// </summary>
/// <param name="meshInstances"></param>
/// <param name="prototypeIndex"></param>
public static void GenerateFoliageMeshInstanceForIndex(int prototypeIndex, FoliageResolutions resolution)
{
Dictionary <int, GPUMesh> meshInstances = prototypeMeshInstances[resolution];
FoliagePrototype prototype = FoliageDB.sortedPrototypes[prototypeIndex];
if (!FoliageCore_MainManager.instance.enabled)
{
return;
}
bool prototypeMeshExists = prototypeMeshInstances != null && meshInstances.ContainsKey(prototypeIndex);
if (prototypeMeshExists)
{
meshInstances[prototypeIndex].Destroy();
meshInstances.Remove(prototypeIndex);
}
Mesh[] meshes = new Mesh[prototype.meshLodsCount];
int[] densities = new int[prototype.meshLodsCount];
List <UNPhysicsTemplate>[] physicsObjects = new List <UNPhysicsTemplate> [prototype.meshLodsCount];
for (int i = 0; i < prototype.meshLodsCount; i++)
{
meshes[i] = CreateNewMesh();
densities[i] = Mathf.FloorToInt((float)prototype.maxGeneratedDensity / (i + 1));
FoliageMeshInstance.CreateGPUMesh(prototype, meshes[i], densities[i]);
}
meshInstances.Add(prototypeIndex, new GPUMesh(meshes, densities, prototypeIndex, physicsObjects, resolution));
}
public static FoliageMeshInstance CreateFoliageMesh(FoliagePrototype prototype, Vector3 position, int maxInstancesPerMesh)
{
FoliageMeshInstance instance = new FoliageMeshInstance();
instance.prototype = prototype;
instance.position = position;
instance.maxInstancesPerMesh = maxInstancesPerMesh;
return(instance);
}
public GPUMesh(Mesh[] LODMeshes, int[] LODLevels, int prototypeIndex, List <UNPhysicsTemplate>[] physicsInformation, FoliageResolutions resolution)
{
if (LODMeshes.Length != LODLevels.Length)
{
Debug.LogError("uNature Foliage : Generating LODs Failed!, Array sizes are different!");
return;
}
LODMeshInstances = new FoliageMeshInstancesGroup[LODMeshes.Length];
for (int i = 0; i < LODMeshes.Length; i++)
{
meshes.Add(new GPUMeshLOD(LODMeshes[i], LODLevels[i], prototypeIndex, physicsInformation[i]));
LODMeshInstances[i] = FoliageMeshInstance.CreateFoliageInstances(prototypeIndex, LODLevels[i], resolution);
}
}
public static FoliageMeshInstancesGroup CreateFoliageInstances(int prototypeIndex, int density, FoliageResolutions resolution)
{
float resMultiplier = (float)resolution / FoliageCore_MainManager.FOLIAGE_INSTANCE_AREA_SIZE;
FoliagePrototype prototype = FoliageDB.sortedPrototypes[prototypeIndex];
int maxGenerationInstancesPerMesh = (int)(CalculatePerMeshInstances(prototype, density) / resMultiplier);
int generationAmountPerRadius = GENERATION_AMOUNT_PER_RADIUS(maxGenerationInstancesPerMesh);
FoliageMeshInstancesGroup meshGroup = new FoliageMeshInstancesGroup();
Vector3 position;
int gAmountX = generationAmountPerRadius - (int)prototype.meshInstancesGenerationOffset.x;
if (gAmountX == 0)
{
gAmountX = 1; // dont clamp, it can be minus
}
int gAmountZ = generationAmountPerRadius - (int)prototype.meshInstancesGenerationOffset.y;
if (gAmountZ == 0)
{
gAmountZ = 1; // dont clamp, it can be minus
}
for (int x = 0; x < gAmountX; x++)
{
for (int z = 0; z < gAmountZ; z++)
{
position = new Vector3(z * maxGenerationInstancesPerMesh, 0, x * maxGenerationInstancesPerMesh);
meshGroup.AddMeshInstance(FoliageMeshInstance.CreateFoliageMesh(prototype, position, maxGenerationInstancesPerMesh));
}
}
return(meshGroup);
}
public void OnDrawCamera(Camera camera)
{
if (!FoliageCore_MainManager.instance.enabled || prototypeMeshInstances == null)
{
return;
}
bool runCameraCheck = true;
FoliageReceiver receiver = null;
#if UNITY_EDITOR
runCameraCheck = !UnityEditor.SceneView.GetAllSceneCameras().Contains(camera);
#endif
if (runCameraCheck)
{
if (FoliageReceiver.FReceivers.Count == 0)
{
return;
}
for (int i = 0; i < FoliageReceiver.FReceivers.Count; i++)
{
if (camera == FoliageReceiver.FReceivers[i].playerCamera)
{
receiver = FoliageReceiver.FReceivers[i];
break;
}
if (i == FoliageReceiver.FReceivers.Count - 1)
{
return;
}
}
}
if (receiver != null && !receiver.isGrassReceiver)
{
return;
}
int areaSizeIntegral = FoliageCore_MainManager.FOLIAGE_INSTANCE_AREA_SIZE;
FoliageCore_Chunk[] targetedChunks = null;
FoliageCore_Chunk currentMChunk;
if (receiver == null)
{
targetedChunks = UNStandaloneUtility.GetFoliageChunksNeighbors(camera.transform.position - transform.position, targetedChunks);
latestManagerChunk = targetedChunks[4];
}
else
{
targetedChunks = receiver.neighbors;
latestManagerChunk = receiver.middleFoliageChunkFromNeighbors;
}
Vector3 normalizedCameraPosition;
FoliageManagerInstance mInstance;
FoliageSector sector;
FoliageChunk chunk;
float density = FoliageCore_MainManager.instance.density;
int instancesResolution = FoliageCore_MainManager.instance.instancesSectorResolution;
#region PER_INSTANCE
GPUMesh gpuInstance = null;
FoliageChunk currentInstanceChunk;
Vector3 pos;
Material mat;
int chunkIndex;
FoliageMeshInstancesGroup meshGroup;
FoliagePrototype prototype;
int maxDensity;
FoliageMeshInstance meshInstance;
Vector3 chunkPos;
int gpuMeshIndex = -1;
Camera renderCamera = Application.isPlaying ? camera : null;
List <FoliageChunk> chunks;
Mesh targetMesh;
Dictionary <int, GPUMesh> prototypeInstances;
bool useQualitySettingsShadows = FoliageCore_MainManager.instance.useQualitySettingsShadowDistance;
float shadowsDistance = FoliageCore_MainManager.instance.foliageShadowDistance;
#endregion
propertyBlock.SetVector("_StreamingAdjuster", UNStandaloneUtility.GetStreamingAdjuster());
if (receiver != null)
{
propertyBlock.SetFloat("_InteractionResolution", receiver.interactionMapResolutionIntegral);
}
for (int i = 0; i < targetedChunks.Length; i++)
{
currentMChunk = targetedChunks[i];
if (currentMChunk == null)
{
continue;
}
normalizedCameraPosition = camera.transform.position;
if (!currentMChunk.InBounds(normalizedCameraPosition, 100) || !currentMChunk.isFoliageInstanceAttached)
{
continue;
}
mInstance = currentMChunk.GetOrCreateFoliageManagerInstance();
normalizedCameraPosition -= mInstance.transform.position;
normalizedCameraPosition.x = Mathf.Clamp(normalizedCameraPosition.x, 0, areaSizeIntegral - 1);
normalizedCameraPosition.z = Mathf.Clamp(normalizedCameraPosition.z, 0, areaSizeIntegral - 1);
sector = mInstance.sector;
chunks = sector.FoliageChunks;
prototypeInstances = mInstance.meshInstances;
chunk = sector.getChunk(normalizedCameraPosition) as FoliageChunk;
if (chunk == null)
{
continue;
}
if (receiver != null)
{
propertyBlock.SetVector(PROPERTY_ID_FOLIAGE_INTERACTION_POSITION, chunk.position3D);
}
DEBUG_ResetValues();
mInstance.UpdateMaterialBlock(propertyBlock);
for (int prototypeIndex = 0; prototypeIndex < FoliageDB.unSortedPrototypes.Count; prototypeIndex++)
{
prototype = FoliageDB.unSortedPrototypes[prototypeIndex];
if (!prototype.enabled)
{
continue;
}
int chunkOffset = FoliageMeshInstance.GENERATION_RANGE_OFFSET(prototype);
int prototypeRadius = (int)prototype.FoliageGenerationRadius;
propertyBlock.SetTexture(PROPERTY_ID_GRASSMAP, mInstance.grassMaps[prototype].map);
//DEBUG
_lastRenderedPrototypes++;
try
{
gpuInstance = prototypeInstances[prototype.id];
}
catch (System.Exception ex)
{
Debug.LogError(ex.ToString());
return;
}
try
{
mat = prototype.FoliageInstancedMeshData.mat;
}
catch
{
// if Foliage db was deleted/ a detail was removed...
FoliageCore_MainManager.DestroyMeshInstance(prototype.id);
OnDrawCamera(camera);
return;
}
int xIndex;
int zIndex;
for (int x = 0; x < prototypeRadius; x++)
{
for (int z = 0; z < prototypeRadius; z++)
{
xIndex = chunk.x + (x - chunkOffset);
zIndex = chunk.z + (z - chunkOffset);
if (xIndex < 0 || zIndex < 0)
{
continue;
}
chunkIndex = xIndex + (zIndex * instancesResolution);
if (chunkIndex >= chunks.Count)
{
continue;
}
currentInstanceChunk = chunks[chunkIndex];
if (currentInstanceChunk != null)
{
chunkPos = currentInstanceChunk.position3D;
maxDensity = (int)(currentInstanceChunk.GetMaxDensityOnArea(prototype.id) * density);
gpuMeshIndex = gpuInstance.GetMesh(maxDensity);
if (gpuMeshIndex != -1)
{
//meshGroup = gpuInstance.LODMeshInstances[x, z, gpuMeshIndex];
meshGroup = gpuInstance.LODMeshInstances[gpuMeshIndex];
targetMesh = gpuInstance.meshes[gpuMeshIndex].mesh;
for (int j = 0; j < meshGroup.Count; j++)
{
meshInstance = meshGroup[j];
pos = meshInstance.GetPosition(chunkPos);
if (pos.x < 0 || pos.z < 0 || pos.x >= areaSizeIntegral || pos.z >= areaSizeIntegral)
{
continue;
}
propertyBlock.SetVector(PROPERTY_ID_WORLDPOSITION, pos);
//DEBUG
_lastRenderedVertices += targetMesh.vertexCount;
//DEBUG
_lastRenderedDrawCalls++;
meshInstance.DrawAndUpdate(pos, targetMesh, mat, renderCamera, normalizedCameraPosition, prototype, propertyBlock, useQualitySettingsShadows, shadowsDistance);
}
}
}
}
}
}
}
}
public void AddMeshInstance(FoliageMeshInstance instance)
{
meshInstances.Add(instance);
count = meshInstances.Count;
}