rtcGetSYCLDeviceFunctionPointer(3) Embree Ray Tracing Kernels 4 rtcGetSYCLDeviceFunctionPointer(3) 

rtcGetSYCLDeviceFunctionPointer - obtains a device side
  function pointer for some SYCL function


#include <embree4/rtcore.h>
template<auto F>
inline decltype(F) rtcGetSYCLDeviceFunctionPointer(sycl::queue& queue);

This function returns a device side function pointer for some function F. This function F must be defined using the RTC_SYCL_INDIRECTLY_CALLABLE attribute, e.g.:

RTC_SYCL_INDIRECTLY_CALLABLE void filter(
  const RTCFilterFunctionNArguments* args) { ... }
RTCFilterFunctionN fptr = rtcGetSYCLDeviceFunctionPointer<filter>(queue);

Such a device side function pointers of some filter callbacks can get assigned to a geometry using the rtcSetGeometryIntersectFilterFunction and rtcSetGeometryOccludedFilterFunction API functions.

Further, device side function pointers for user geometry callbacks can be assigned to geometries using the rtcSetGeometryIntersectFunction and rtcSetGeometryOccludedFunction API calls.

These geometry versions of the callback functions are disabled in SYCL by default, and we recommend not using them for performance reasons.

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

[rtcSetGeometryIntersectFunction], [rtcSetGeometryOccludedFunction], [rtcSetGeometryIntersectFilterFunction], [rtcSetGeometryOccludedFilterFunction]