void Start()
{
goList = new List <GPUInstancerPrefab>();
// Define the buffer to the Prefab Manager.
if (prefabManager != null && prefabManager.isActiveAndEnabled)
{
GPUInstancerAPI.DefinePrototypeVariationBuffer <Vector4>(prefabManager, prefab.prefabPrototype, bufferName);
}
// Generate instances inside a radius.
for (int i = 0; i < instances; i++)
{
GPUInstancerPrefab prefabInstance = Instantiate(prefab);
prefabInstance.transform.localPosition = Random.insideUnitSphere * 20;
prefabInstance.transform.SetParent(transform);
goList.Add(prefabInstance);
// Register the variation buffer for this instance.
prefabInstance.AddVariation(bufferName, (Vector4)Random.ColorHSV());
}
// Register the generated instances to the manager and initialize the manager.
if (prefabManager != null && prefabManager.isActiveAndEnabled)
{
GPUInstancerAPI.RegisterPrefabInstanceList(prefabManager, goList);
GPUInstancerAPI.InitializeGPUInstancer(prefabManager);
}
}
/// <summary>
/// <para>Updates the variation value for this prefab instance. The variation buffer for the prototype must be defined
/// with <see cref="DefinePrototypeVariationBuffer{T}"/> before using this.</para>
/// </summary>
/// <typeparam name="T">The type of variation buffer. Must be defined in the instance prototype's shader.</typeparam>
/// <param name="manager">The manager that defines the prototypes you want to GPU instance.</param>
/// <param name="prefabInstance">The prefab instance to update the variation at.</param>
/// <param name="bufferName">The name of the variation buffer in the prototype's shader.</param>
/// <param name="value">The value of the variation.</param>
public static void UpdateVariation <T>(GPUInstancerPrefabManager manager, GPUInstancerPrefab prefabInstance, string bufferName, T value)
{
prefabInstance.AddVariation(bufferName, value);
manager.UpdateVariationData(prefabInstance, bufferName, value);
}
/// <summary>
/// <para>Sets the variation value for this prefab instance. The variation buffer for the prototype must be defined
/// with <see cref="DefinePrototypeVariationBuffer{T}"/> before using this.</para>
/// </summary>
/// <typeparam name="T">The type of variation buffer. Must be defined in the instance prototype's shader.</typeparam>
/// <param name="prefabInstance">The prefab instance to add the variation to.</param>
/// <param name="bufferName">The name of the variation buffer in the prototype's shader.</param>
/// <param name="value">The value of the variation.</param>
public static void AddVariation <T>(GPUInstancerPrefab prefabInstance, string bufferName, T value)
{
prefabInstance.AddVariation(bufferName, value);
}
