/// <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);
}
/// <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);
}
/// <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;
}