realist's Introduction

rtiow

This is my implementation of the excellent RTIOW ray tracing book in C, C++, V, Odin, Rust and Go

realist

Simple, naive, C++ ray-tracer

rayXX

Simple ray-tracer benchmark to compare between C, C++, Vlang and golang.

To run the benchmark :

$ make clobber bench BENCH_SIZE=10000
gcc -Wall -Werror -Wextra -g -pipe -std=c99 -O3  -pipe  rayc.c  -lm -o rayc
g++ -Wall -Werror -Wextra -g -pipe -std=c++11 -O3 -I.  -pipe  raycpp.cpp  -lm -o raycpp
cd ray_v ; ../v/v  -o ../rayv_v.c . ; cd ..
gcc -Wall -Werror -Wextra -g -pipe -std=c99 -O3  -pipe rayv_v.c -lm -o rayv -w
GOPATH=`pwd`/ray_go go build -o raygo ray_go/raygo.go
/usr/bin/time ./rayc 10000 10000 rayc.ppm && md5sum rayc.ppm
7.67user 0.20system 0:07.88elapsed 99%CPU (0avgtext+0avgdata 294688maxresident)k
0inputs+585944outputs (0major+764minor)pagefaults 0swaps
0ae8911109ff4a32f471bd704829a44c  rayc.ppm
/usr/bin/time ./rayv 10000 10000 rayv.ppm && md5sum rayv.ppm
11.37user 0.21system 0:11.60elapsed 99%CPU (0avgtext+0avgdata 294684maxresident)k
0inputs+585944outputs (0major+762minor)pagefaults 0swaps
0ae8911109ff4a32f471bd704829a44c  rayv.ppm
/usr/bin/time ./raycpp 10000 10000 raycpp.ppm && md5sum raycpp.ppm
12.09user 0.21system 0:12.32elapsed 99%CPU (0avgtext+0avgdata 296096maxresident)k
0inputs+585944outputs (0major+819minor)pagefaults 0swaps
0ae8911109ff4a32f471bd704829a44c  raycpp.ppm
/usr/bin/time ./raygo 10000 10000 raygo.ppm && md5sum raygo.ppm
15.55user 0.23system 0:15.87elapsed 99%CPU (0avgtext+0avgdata 309420maxresident)k
0inputs+585944outputs (0major+898minor)pagefaults 0swaps
0ae8911109ff4a32f471bd704829a44c  raygo.ppm

Acknowledgements

Many thanks to Aurélie Alvet for her significant Rust optimization and the Rust community for help with my initial Rust rampup. Many thanks to Cieric for his C/C++ PCG implementation. Many thanks to Delyan Angelov for his significant V optimization done to the V port (both perfs and accuracy). Many thanks to Amaury for initial rust port.

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