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

# rtcSetGeometryVertexAttributeCount(3embree4)

### NAME

-

  ```
  rtcSetGeometryVertexAttributeCount - sets the number of vertex
    attributes of the geometry
  ```

### SYNOPSIS

-

  ```
  #include <embree4/rtcore.h>
  void rtcSetGeometryVertexAttributeCount(
    RTCGeometry geometry,
    unsigned int vertexAttributeCount
  );
  ```

### DESCRIPTION

The `rtcSetGeometryVertexAttributeCount` function sets the number of slots (`vertexAttributeCount` parameter) for vertex attribute buffers (`RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE`) that can be used for the specified geometry (`geometry` parameter).

This function is supported only for triangle meshes (`RTC_GEOMETRY_TYPE_TRIANGLE`), quad meshes (`RTC_GEOMETRY_TYPE_QUAD`), curves (`RTC_GEOMETRY_TYPE_CURVE`), points (`RTC_GEOMETRY_TYPE_POINT`), and subdivision geometries (`RTC_GEOMETRY_TYPE_SUBDIVISION`).

### EXIT STATUS

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

### SEE ALSO

\[rtcNewGeometry\], \[RTCBufferType\]