RTCSETDEVICEERRORFUNCTION(3embree3)

✨ rtcSetDeviceErrorFunction ✨

okay bestie, gather round, because we're talking about rtcSetDeviceErrorFunction from the Embree Ray Tracing Kernels 3 manual, and it's genuinely such a useful little guy 🫶

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🌸 NAME 🌸

rtcSetDeviceErrorFunction — sets an error callback function for the device 💅

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🎀 SYNOPSIS 🎀

#include <embree3/rtcore.h>

typedef void (*RTCErrorFunction)(
  void* userPtr,
  RTCError code,
  const char* str
);

void rtcSetDeviceErrorFunction(
  RTCDevice device,
  RTCErrorFunction error,
  void* userPtr
);

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💖 DESCRIPTION 💖

so the whole vibe of rtcSetDeviceErrorFunction is: you get to register a callback function (that's the error argument) along with a little payload to carry around with it (that's userPtr), and Embree will call that function whenever an error happens on the device you specified (the device argument). it's giving "tell me when things go wrong, i want to know immediately" energy fr fr 😭

and here's the thing — only ONE callback function can be registered per device. like, monogamous callback situation. if you invoke this again, it just overwrites whatever callback you set before, no warning, no drama, it's just gone. bye 👋

also, if you pass NULL as the function pointer, that disables the registered callback function entirely. no callback, no problems (well, the problems still exist, you just won't be told about them 🙈).

when your registered callback does get invoked, it receives three things:

1. the user-defined payload — that's the userPtr argument you specified back at registration time 🎁
2. the error code — that's the code argument, describing which error actually occurred
3. a string — that's the str argument, and it describes the error in more detail, so you're not just staring at a number like 👁️👄👁️

and lowkey important: the error code is also set if an error callback function is registered. so it's not either/or, bestie, you get both 💅

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💀 EXIT STATUS 💀

on failure, an error code is set that you can query using rtcGetDeviceError. that's your receipts, keep them 📝

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👑 SEE ALSO 👑

• [rtcGetDeviceError]

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that's the whole page, no cap ✨ stay iconic, go catch those errors, and remember: one callback per device, NULL to disable, and the error code still gets set either way 🦋

rtcSetDeviceErrorFunction(3) — from the Embree Ray Tracing Kernels 3 manual, that's the version, mwah 💋