raytracing in not exactly one weekend

https://raytracing.github.io/books/RayTracingInOneWeekend.html

current progress

run

use clojure

clojure -M:main

note

• still doesn't understand parallelism here, the faster is when I give it size 2 threadpool, why?

realm.raytracing

experimental

clojure -M:realm

raytracing2 + vec3i

vec3i = vector operation that lives on a single preallocated contiguous primitive array

I dont know if this is a good idea, gonna try and test my understanding

criterium/bench

raytracing-rd (NEW!)

Evaluation count : 120 in 60 samples of 2 calls.
             Execution time mean : 572.864456 ms
    Execution time std-deviation : 9.609870 ms
   Execution time lower quantile : 562.738897 ms ( 2.5%)
   Execution time upper quantile : 590.948235 ms (97.5%)
                   Overhead used : 5.644573 ns

Found 5 outliers in 60 samples (8.3333 %)
        low-severe       4 (6.6667 %)
        low-mild         1 (1.6667 %)
 Variance from outliers : 6.2554 % Variance is slightly inflated by outliers

wow! though this clojure is the least clojure codebase ever i dont even know if this is a feasible way to program, preallocated array, index-based memory location what even is this paradigm

but still, I wanna see this through

raytracing-i

Evaluation count : 60 in 60 samples of 1 calls.
             Execution time mean : 3.921437 sec
    Execution time std-deviation : 22.136790 ms
   Execution time lower quantile : 3.887313 sec ( 2.5%)
   Execution time upper quantile : 3.962837 sec (97.5%)
                   Overhead used : 5.663971 ns

Found 1 outliers in 60 samples (1.6667 %)
        low-severe       1 (1.6667 %)
 Variance from outliers : 1.6389 % Variance is slightly inflated by outliers

raytracing-rf

Evaluation count : 60 in 60 samples of 1 calls.
             Execution time mean : 3.336118 sec
    Execution time std-deviation : 88.058390 ms
   Execution time lower quantile : 3.258130 sec ( 2.5%)
   Execution time upper quantile : 3.586640 sec (97.5%)
                   Overhead used : 7.218311 ns

Found 3 outliers in 60 samples (5.0000 %)
        low-severe       3 (5.0000 %)
 Variance from outliers : 14.1590 % Variance is moderately inflated by outliers

raytracing-rd (old)

Evaluation count : 60 in 60 samples of 1 calls.
             Execution time mean : 3.421423 sec
    Execution time std-deviation : 61.079395 ms
   Execution time lower quantile : 3.357798 sec ( 2.5%)
   Execution time upper quantile : 3.548718 sec (97.5%)
                   Overhead used : 5.626911 ns

Found 1 outliers in 60 samples (1.6667 %)
        low-severe       1 (1.6667 %)
 Variance from outliers : 7.7659 % Variance is slightly inflated by outliers

double and float practically have the same perf huh? maybe all these works and the answer is probably gpu, blas, vectorz or something but I want to see this through and multithread this