---
name: "rtcSetGeometryInstancedScenes"
section: "3"
platform: "linux"
package: "libembree-dev"
version: "4.3.3+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/rtcSetGeometryInstancedScenes"
---

# rtcSetGeometryInstancedScenes(3)

### NAME

-

  ```
  rtcSetGeometryInstancedScenes - sets an array of scenes that can be
  instanced by an instance array geometry
  ```

### SYNOPSIS

-

  ```
  #include <embree4/rtcore.h>
  void rtcSetGeometryInstancedScenes(
    RTCGeometry geometry,
    RTCScene* scene,
    size_t numScenes
  );
  ```

### DESCRIPTION

The `rtcSetGeometryInstancedScenes` function sets an array of type `RTCScene` with `numScenes` elements that the specified instance geometry (`geometry` argument) can instance. This call also requires setting an index buffer using either `rtcSetSharedGeometryBuffer` or `rtcSetNewGeometryBuffer` (similar to index buffers for triangle meshes), that specifies which instance of the instance array instances which scene in the scene array. If only one scene should be instanced the call `rtcSetGeometryInstancedScene` should be preferred.

### EXIT STATUS

On failure an error code is set that can be queried using `rtcGetDeviceError`.

### SEE ALSO

\[RTC\_GEOMETRY\_TYPE\_INSTANCE\_ARRAY\], \[rtcSetNewGeometryBuffer\], \[rtcSetSharedGeometryBuffer\], \[rtcSetGeometryInstancedScene\]