---
name: "rtcSetNewGeometryBuffer"
section: "3embree4"
platform: "linux"
package: "embree"
version: "4.4.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/rtcSetNewGeometryBuffer/3embree4"
---

# rtcSetNewGeometryBuffer(3embree4)

### NAME

-

  ```
  rtcSetNewGeometryBuffer - creates and assigns a new data buffer to
    the geometry
  ```

### SYNOPSIS

-

  ```
  #include <embree4/rtcore.h>
  void* rtcSetNewGeometryBuffer(
    RTCGeometry geometry,
    enum RTCBufferType type,
    unsigned int slot,
    enum RTCFormat format,
    size_t byteStride,
    size_t itemCount
  );
  ```

### DESCRIPTION

The `rtcSetNewGeometryBuffer` function creates a new data buffer of specified format (`format` argument), byte stride (`byteStride` argument), and number of items (`itemCount` argument), and assigns it to a geometry buffer slot (`type` and `slot` argument) of the specified geometry (`geometry` argument). The buffer data is managed internally and automatically freed when the geometry is destroyed.

The byte stride (`byteStride` argument) must be aligned to 4 bytes; otherwise the `rtcSetNewGeometryBuffer` function will fail.

The allocated buffer will be automatically over-allocated slightly when used as a vertex buffer, where a requirement is that each buffer element should be readable using 16-byte SSE load instructions.

### EXIT STATUS

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

### SEE ALSO

\[rtcSetGeometryBuffer\], \[rtcSetSharedGeometryBuffer\]