RTCSETNEWGEOMETRYBUFFER(3embree3)

💖 rtcSetNewGeometryBuffer(3) 💖

okay bestie, so this one lives in the Embree Ray Tracing Kernels 3 manual — yes, the iconic ray tracing library — and it's about handing your geometry a shiny brand-new data buffer. she's giving buffer glow-up energy and honestly? obsessed. ✨

🌸 NAME 🌸

rtcSetNewGeometryBuffer — creates and assigns a new data buffer to the geometry 🎀

🦋 SYNOPSIS 🦋

#include <embree3/rtcore.h>

void* rtcSetNewGeometryBuffer(
  RTCGeometry geometry,
  enum RTCBufferType type,
  unsigned int slot,
  enum RTCFormat format,
  size_t byteStride,
  size_t itemCount
);

✨ DESCRIPTION ✨

so the way this works, bestie: rtcSetNewGeometryBuffer makes a brand new data buffer for you. you tell it the format (that's the format argument), the byte stride (that's byteStride, obviously 💅), and how many items you want in it (that's itemCount). then it assigns that fresh little buffer to a geometry buffer slot — the type and slot arguments decide which slot — of the geometry you passed in the geometry argument. 🫶

the buffer data is managed internally, no cap. and the second the geometry gets destroyed, the buffer is automatically freed. you don't have to lift a finger. she cleans up after herself. queen behaviour. 👑

now here's the part where you need to lock in 🔒 — the byte stride (the byteStride argument) must be aligned to 4 bytes. if it's not, rtcSetNewGeometryBuffer will straight up fail. no negotiation. not a vibe. 😭

also, when this buffer is used as a vertex buffer, it gets automatically over-allocated slightly. why? because there's a requirement that each buffer element should be readable using 16-byte SSE load instructions, and the over-allocation is what makes that work. it's giving "she prepared in advance so nothing crashes". iconic. 🌈

💀 EXIT STATUS 💀

if something goes wrong (yes, on failure 🙈), an error code gets set. you can go ask about it using rtcGetDeviceError. so like, if she's acting up, that's where the tea is. ☕

🔥 SEE ALSO 🔥

• [rtcSetGeometryBuffer]
• [rtcSetSharedGeometryBuffer]

and that's the whole page, bestie — no skips, no summaries, all the facts intact. 💜 this came straight from the Embree Ray Tracing Kernels 3 manual, rtcSetNewGeometryBuffer(3) edition. go forth and buffer responsibly. mwah. 💅✨🎀