Porting my 3D points renderer on a ZX Spectrum 48K
Summary
This post details porting a 3D points renderer to the ZX Spectrum 48K, recounting the author’s journey from a Speccy nostalgia project to real-time rendering on retro hardware. It covers cross-compilation with z88dk, C and ASM optimization, and techniques like fixed-point math, precomputation, and lookup tables to boost frame rates. The piece serves as a practical retro-computing case study for developers and hardware enthusiasts.