RTCSETNEWGEOMETRYBUFFER(3embree4)

✨ rtcSetNewGeometryBuffer ✨

okay bestie, welcome to the Embree Ray Tracing Kernels 4 manual, page rtcSetNewGeometryBuffer(3) — yes it's a long name, yes it's iconic, let's go 💅

🌸 NAME 🌸

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

✨ SYNOPSIS ✨

#include <embree4/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 is: rtcSetNewGeometryBuffer makes you a brand new data buffer and hands it straight to a geometry. it's giving personal assistant energy fr fr 💖

you tell it the format (that's the format argument), the byte stride (that's byteStride), and how many items you want in there (that's itemCount). then it assigns that buffer to a geometry buffer slot — you pick which one with type and slot — on the geometry you passed in with geometry. no cap. 🫶

the best part?? the buffer data is managed internally and gets automatically freed when the geometry is destroyed. not me being obsessed with automatic cleanup 😭✨ no memory leaks, only vibes.

⚠️ okay but listen — the byte stride (byteStride argument) must be aligned to 4 bytes. if it isn't, rtcSetNewGeometryBuffer will straight up fail. periodt. 💀

and one more lil detail bestie, don't skip this: when the buffer is used as a vertex buffer, the allocated buffer gets automatically over-allocated slightly. why? because the requirement is that each buffer element should be readable using 16-byte SSE load instructions. slay for alignment, honestly 🌈

💀 EXIT STATUS 💀

if something goes wrong, an error code gets set — and you can go query it with rtcGetDeviceError. so if it's not working, that's where you look. iykyk 🔥

👑 SEE ALSO 👑

• rtcSetGeometryBuffer
• rtcSetSharedGeometryBuffer

okay that's the whole page bestie, you ate it, go build something gorgeous 🧚💜

this was rtcSetNewGeometryBuffer(3) from the Embree Ray Tracing Kernels 4 manual set — mwah, bye 💖🎀🦋