Batch meshes at runtime

For more information about batching, refer to Introduction to batching meshes.

Note: Unity uses additional CPU memory to store the combined meshes, even if the meshes are the same. For example, marking trees as static in a dense forest environment can have a large impact on memory. If static batching uses too much memory, combine meshes manually instead.

Batch static GameObjects at runtime

To batch static GameObjects at runtime, for example GameObjects you create procedurally, follow these steps:

Select each mesh you want to batch, then in the Inspector window enable Read/Write enabled.
Use the StaticBatchingUtility API to batch the meshes. The StaticBatchingUtility.Combine method combines GameObjects and prepares them for static batching.

Note: To avoid the read/write mesh using double the amount of memory, you can now delete one copy of the mesh by calling the Mesh.UploadMeshData API with markNoLongerReadable set to true.

You don’t need to enable the static batching setting in the URP asset, HDRP asset, or Player Settings.

If a mesh is culled because it’s outside the camera view, Unity might split the batch into two batches, to avoid a gap in the combined vertex buffers.

You can only change the position, rotation, and scale of the whole batch at runtime, not the individual meshes.

Batch moving GameObjects at runtime

Important: The Built-In Render Pipeline is deprecated and will be made obsolete in a future release.
It remains supported, including bug fixes and maintenance, through the full Unity 6.7 LTS lifecycle.
For more information on migration, refer to Migrating from the Built-In Render Pipeline to the Universal Render Pipeline and Render pipeline feature comparison.

To batch moving GameObjects, enable dynamic batching.

Note: Dynamic batching is deprecated. Refer to Choose a draw call optimization method instead.

Follow these steps in the Built-In Render Pipeline:

Go to Edit > Project Settings > Player.
In the Other Settings section, enable Dynamic Batching.

Dynamic batching transforms all geometry into world space. To disable dynamic batching in a custom shader so you can access object space, enable Disable batching in the Shader Import Settings window of the shader.

You can also disable batching by setting the DisableBatching tag to True in the subshader block of a shader. For example:

    SubShader {
        Tags { "DisableBatching" = "True" }
        ...
    }

Additional resources

SubShader tags in ShaderLab reference

Batch static meshes at build time

Combine meshes manually