rtcGetBufferData(3)

💖 rtcGetBufferData — bestie edition (section 3 of the manual, Embree Ray Tracing Kernels 4, iykyk) 💖

✨ NAME ✨

rtcGetBufferData — literally just hands you a pointer to the buffer data. that's it. that's the whole job. 🫶

🌸 SYNOPSIS 🌸

#include <embree4/rtcore.h>

void* rtcGetBufferData(RTCBuffer buffer);

🎀 DESCRIPTION 🎀

okay so. rtcGetBufferData gives you back a pointer to the buffer data of whatever buffer object you pass in — that's the buffer argument, bestie, she's the main character here. 💅

⚠️ BUT. listen. if that buffer was created using rtcNewBufferHostDevice and the SYCL device has no host unified memory, then this pointer is only valid on the host. like, host-only. don't be taking it anywhere else. 😭

and in that specific case, if what you actually wanted was a device pointer? you gotta go get it with rtcGetBufferDataDevice instead. slay, different function, different vibe. ✨

💀 EXIT STATUS 💀

if it fails, an error code gets set, and you can go interrogate it with rtcGetDeviceError. not me checking the error code like it's a read receipt 🙈

🦋 SEE ALSO 🦋

• rtcGetBufferDataDevice
• rtcNewBuffer
• rtcNewBufferHostDevice

that's the whole page, no cap. this was rtcGetBufferData(3) from the Embree Ray Tracing Kernels 4 era, and it said so right there at the bottom of the page — iconic of it, honestly. go get your buffer data, bestie, you got this 👑💜