# BatchRendererGroup > A BatchRendererGroup is an object that lets you perform customizable high performance rendering. ## Definition * **Type:** Class * **Namespace:** [UnityEngine.Rendering](/engine/6000.7/script-reference/unityengine/rendering.md) * **Assembly:** UnityEngine.CoreModule * **Implements:** [IDisposable](https://learn.microsoft.com/dotnet/api/system.idisposable) ```csharp public class BatchRendererGroup : IDisposable ``` ## Remarks You can set up batches in advance to set up groups of instances with shared metadata values that describe how to load Material properties. Whenever Unity renders a `BatchRendererGroup`, it invokes the `OnPerformCulling` callback to perform visibility culling and to generate a variable sized list of draw commands that describe how to render the visible parts of the `BatchRendererGroup`. Each draw command instructs Unity to render a group of instances from a given batch with a specific Mesh and Material. ## Constructors | Constructor | Description | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------- | | [BatchRendererGroup(UnityEngine.Rendering.BatchRendererGroup.OnPerformCulling,System.IntPtr)](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/ctor.md#batchrenderergroup\(onperformculling-intptr\)) | Constructor for a BatchRendererGroup object. | | [BatchRendererGroup(UnityEngine.Rendering.BatchRendererGroupCreateInfo)](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/ctor.md#batchrenderergroup\(batchrenderergroupcreateinfo\)) | Constructor for a BatchRendererGroup object. | ## Static Properties | Property | Description | | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [BufferTarget](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/buffertarget.md) | The buffer target [BatchRendererGroup.AddBatch](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/addbatch.md) accepts for the active graphics API. | ## Methods | Method | Description | | ------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [AddBatch](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/addbatch.md) | Create a draw command batch that shares a single set of metadata values and a single `GraphicsBuffer`. | | [Dispose](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/dispose.md) | Deletes a group. | | [GetRegisteredMaterial](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/getregisteredmaterial.md) | Returns the previously registered Material associated with this MaterialID. | | [GetRegisteredMesh](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/getregisteredmesh.md) | Returns the previously registered Mesh associated with this MeshID. | | [GetThreadedBatchContext](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/getthreadedbatchcontext.md) | Get the thread-safe API for interacting with a [BatchRendererGroup](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup.md) from Burst jobs. | | [RegisterMaterial](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/registermaterial.md) | Registers a Material in `BatchRendererGroup` and returns its `BatchMaterialID`. Each registration of a specific Material increases its number of owners by 1. | | [RegisterMesh](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/registermesh.md) | Registers a mesh in `BatchRendererGroup` and returns its `BatchMeshID`. Each registration of a specific mesh increases its number of owners by 1. | | [RemoveBatch](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/removebatch.md) | Delete a batch that was previously created with `AddBatch`. | | [SetBatchBuffer](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/setbatchbuffer.md) | Change the `GraphicsBuffer` associated with the given batch. | | [SetEnabledViewTypes](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/setenabledviewtypes.md) | Set the combination of [BatchCullingViewType](/engine/6000.7/script-reference/unityengine/rendering/batchcullingviewtype.md) for which this [BatchRendererGroup](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup.md) should receive an `OnPerformCulling` callback. | | [SetErrorMaterial](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/seterrormaterial.md) | Set the error material for the `BatchRendererGroup`. This material will be used internally by Unity to render the draw commands referring to erroneous shaders. You can also pass 'null' to this method to unset the material. | | [SetGlobalBounds](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/setglobalbounds.md) | Set the bounds of the `BatchRendererGroup`. The bounds should encapsulate the render bounds of every object rendered with this `BatchRendererGroup`. Unity uses these bounds internally for culling. | | [SetLoadingMaterial](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/setloadingmaterial.md) | Set the loading material for the `BatchRendererGroup`. | | [SetPickingMaterial](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/setpickingmaterial.md) | Set the material that Unity uses to render object picking data using the draw commands in the Scene view. | | [UnregisterMaterial](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/unregistermaterial.md) | Unregister the Material ID associated with `BatchRendererGroup`. Each deregistration of a specific Material reduces its number of owners by 1. | | [UnregisterMesh](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/unregistermesh.md) | Unregister the mesh ID associated with `BatchRendererGroup`. Each deregistration of a specific mesh reduces its number of owners by 1. | ## Static Methods | Method | Description | | -------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- | | [GetConstantBufferMaxWindowSize](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/getconstantbuffermaxwindowsize.md) | Defines the maxiumum amount (in bytes) the BatchRendererGroup constant buffer window size is visible from the shader. | ## Delegates | Delegate | Description | | ------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------- | | [BatchRendererGroup.OnFinishedCulling](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/onfinishedculling.md) | Finished culling callback function. | | [BatchRendererGroup.OnPerformCulling](/engine/6000.7/script-reference/unityengine/rendering/batchrenderergroup/onperformculling.md) | Culling callback function. |