/// <summary>
/// Can be used to change the mesh of a prototype at runtime
/// </summary>
/// <param name="manager">GPUI Manager</param>
/// <param name="prototype">GPUI Prototype</param>
/// <param name="mesh">New mesh to set on the renderer</param>
/// <param name="lodLevel">LOD level</param>
/// <param name="rendererIndex">Renderer index on the LOD level</param>
/// <param name="subMeshIndex">Submesh index of the renderer</param>
public static void ChangeMesh(GPUInstancerManager manager, GPUInstancerPrototype prototype, Mesh mesh, int lodLevel = 0, int rendererIndex = 0, int subMeshIndex = 0)
{
GPUInstancerRuntimeData runtimeData = manager.GetRuntimeData(prototype, true);
if (runtimeData == null)
{
return;
}
GPUInstancerRenderer gpuiRenderer = runtimeData.instanceLODs[lodLevel].renderers[rendererIndex];
if (gpuiRenderer.mesh.subMeshCount != mesh.subMeshCount)
{
Debug.LogError("ChangeMesh method can not be used with a mesh that has different amount of submeshes than the original mesh.");
return;
}
if (gpuiRenderer.mesh.vertexCount != mesh.vertexCount)
{
int argsLastIndex = gpuiRenderer.argsBufferOffset;
// Setup the indirect renderer buffer:
for (int j = 0; j < gpuiRenderer.mesh.subMeshCount; j++)
{
runtimeData.args[argsLastIndex++] = gpuiRenderer.mesh.GetIndexCount(j); // index count per instance
runtimeData.args[argsLastIndex++] = 0; // (uint)runtimeData.bufferSize;
runtimeData.args[argsLastIndex++] = gpuiRenderer.mesh.GetIndexStart(j); // start index location
runtimeData.args[argsLastIndex++] = 0; // base vertex location
runtimeData.args[argsLastIndex++] = 0; // start instance location
}
runtimeData.argsBuffer.SetData(runtimeData.args);
}
gpuiRenderer.mesh = mesh;
}
/// <summary>
/// Can be used to change the material of a prototype at runtime
/// </summary>
/// <param name="manager">GPUI Manager</param>
/// <param name="prototype">GPUI Prototype</param>
/// <param name="material">New material to set on the renderer</param>
/// <param name="lodLevel">LOD level</param>
/// <param name="rendererIndex">Renderer index on the LOD level</param>
/// <param name="subMeshIndex">Submesh index of the renderer</param>
public static void ChangeMaterial(GPUInstancerManager manager, GPUInstancerPrototype prototype, Material material, int lodLevel = 0, int rendererIndex = 0, int subMeshIndex = 0)
{
GPUInstancerRuntimeData runtimeData = manager.GetRuntimeData(prototype, true);
if (runtimeData == null)
{
return;
}
GPUInstancerRenderer gpuiRenderer = runtimeData.instanceLODs[lodLevel].renderers[rendererIndex];
// Generate proxy GO with a Mesh Renderer to get material property blocks
GameObject proxyGameObject = new GameObject("ProxyGO");
MeshFilter meshFilter = proxyGameObject.AddComponent <MeshFilter>();
MeshRenderer proxyRenderer = proxyGameObject.AddComponent <MeshRenderer>();
// Set mesh to proxy GO
meshFilter.mesh = gpuiRenderer.mesh;
// Set new material to runtime data
gpuiRenderer.materials[subMeshIndex] = GPUInstancerConstants.gpuiSettings.shaderBindings.GetInstancedMaterial(material);
// Set new material to proxy GO
proxyRenderer.materials[subMeshIndex] = material;
// Get material property blocks
proxyRenderer.GetPropertyBlock(gpuiRenderer.mpb);
if (gpuiRenderer.shadowMPB != null)
{
proxyRenderer.GetPropertyBlock(gpuiRenderer.shadowMPB);
}
// Destroy proxy GO
GameObject.Destroy(proxyGameObject);
// Setup new materials for instancing
GPUInstancerUtility.SetAppendBuffers(runtimeData);
}
public GPUInstancerRuntimeData GetRuntimeData(GPUInstancerPrototype prototype, bool logError = false)
{
GPUInstancerRuntimeData runtimeData = null;
if (!runtimeDataDictionary.TryGetValue(prototype, out runtimeData) && logError)
{
Debug.LogError("Can not find runtime data for prototype: " + prototype + ". Please check if the prototype was added to the Manager and the initialize method was called.");
}
return(runtimeData);
}
public ComputeBuffer GetTransformDataBuffer(GPUInstancerPrototype prototype)
{
GPUInstancerRuntimeData runtimeData = GetRuntimeData(prototype);
if (runtimeData != null)
{
return(runtimeData.transformationMatrixVisibilityBuffer);
}
return(null);
}
/// <summary>
/// Returns the array that stores the transform data of the instances
/// </summary>
/// <param name="manager">GPUI Manager</param>
/// <param name="prototype">GPUI Prototype</param>
/// <returns>Instance data array</returns>
public static Matrix4x4[] GetInstanceDataArray(GPUInstancerManager manager, GPUInstancerPrototype prototype)
{
GPUInstancerRuntimeData runtimeData = manager.GetRuntimeData(prototype, true);
if (runtimeData == null)
{
return(null);
}
return(runtimeData.instanceDataArray);
}
public ComputeBuffer GetTransformDataBuffer(GPUInstancerPrototype prototype)
{
if (runtimeDataList != null && runtimeDataList.Count > 0)
{
GPUInstancerRuntimeData runtimeData = runtimeDataList.Find(rd => rd != null && rd.prototype == prototype);
if (runtimeData != null)
{
return(runtimeData.transformationMatrixVisibilityBuffer);
}
}
return(null);
}
/// <summary>
/// SetInstanceCount can be used to discard instances that are indexed higher than the given index count
/// </summary>
/// <param name="manager">GPUI Manager</param>
/// <param name="prototype">GPUI Prototype</param>
/// <param name="instanceCount">New instance count to set on the runtime data</param>
public static void SetInstanceCount(GPUInstancerManager manager, GPUInstancerPrototype prototype, int instanceCount)
{
GPUInstancerRuntimeData runtimeData = manager.GetRuntimeData(prototype, true);
if (runtimeData == null)
{
return;
}
if (instanceCount > runtimeData.bufferSize)
{
Debug.LogError("Instance count can not be higher than the buffer size.");
return;
}
runtimeData.instanceCount = instanceCount;
}
public virtual void SetupPrefabInstance(GPUInstancerRuntimeData runtimeData, bool forceNew = false)
{
}
// Wind workaround:
public static void AddTreeProxy(GPUInstancerPrototype treePrototype, GPUInstancerRuntimeData runtimeData)
{
switch (treePrototype.treeType)
{
case GPUInstancerTreeType.SpeedTree:
case GPUInstancerTreeType.SpeedTree8:
if (treeProxyParent == null)
{
treeProxyParent = new GameObject("GPUI Tree Manager Proxy");
if (treeProxyList != null)
{
treeProxyList.Clear();
}
}
if (treeProxyList == null)
{
treeProxyList = new Dictionary <GameObject, Transform>(); // Dict[TreePrefab, TreeProxyGO]
}
else if (treeProxyList.ContainsKey(treePrototype.prefabObject))
{
if (treeProxyList[treePrototype.prefabObject] == null)
{
treeProxyList.Remove(treePrototype.prefabObject);
}
else
{
return;
}
}
Mesh treeProxyMesh = new Mesh();
treeProxyMesh.name = "TreeProxyMesh";
GameObject treeProxyObjectParent = new GameObject(treeProxyList.Count + "_" + treePrototype.name);
treeProxyObjectParent.transform.SetParent(treeProxyParent.transform);
treeProxyObjectParent.transform.localPosition = Vector3.zero;
treeProxyObjectParent.transform.localRotation = Quaternion.identity;
treeProxyList.Add(treePrototype.prefabObject, treeProxyObjectParent.transform);
if (treePrototype.prefabObject.GetComponent <LODGroup>() != null)
{
LOD[] speedTreeLODs = treePrototype.prefabObject.GetComponent <LODGroup>().GetLODs();
for (int lod = 0; lod < speedTreeLODs.Length; lod++)
{
if (speedTreeLODs[lod].renderers[0].GetComponent <BillboardRenderer>())
{
continue;
}
Material[] treeProxyMaterial = new Material[1] {
new Material(Shader.Find(GPUInstancerConstants.SHADER_GPUI_TREE_PROXY))
};
InstantiateTreeProxyObject(speedTreeLODs[lod].renderers[0].gameObject, treeProxyObjectParent, treeProxyMaterial, treeProxyMesh, lod == 0);
}
}
else
{
Material[] treeProxyMaterial = new Material[1] {
new Material(Shader.Find(GPUInstancerConstants.SHADER_GPUI_TREE_PROXY))
};
InstantiateTreeProxyObject(treePrototype.prefabObject, treeProxyObjectParent, treeProxyMaterial, treeProxyMesh, true);
}
break;
case GPUInstancerTreeType.TreeCreatorTree:
// no need to create a TreeCreator proxy - setting the global wind vector instead
Shader.SetGlobalVector("_Wind", GetWindVector());
//Material[] treeCreatorProxyMaterials = new Material[2];
//treeCreatorProxyMaterials[0] = new Material(Shader.Find(GPUInstancerConstants.SHADER_GPUI_TREE_PROXY));
//treeCreatorProxyMaterials[1] = new Material(Shader.Find(GPUInstancerConstants.SHADER_GPUI_TREE_PROXY));
//InstantiateTreeProxyObject(treePrototype.prefabObject, treeProxyObjectParent, treeCreatorProxyMaterials, treeProxyMesh, true);
break;
}
}