Mandelbrot's set optimisation with intrinsics

• Intrincics instruction set: AVX & AVX2 (mirror for Russia)
• Graphic library: raylib
• OS: Window 10

The Mandelbrot set is the set of complex numbers for which the function [f_c(z)=z^2 + c] does not diverge to infinity when iterated from z=0

In my case i considered as belonging to set all points that do not leave circle of radius R = 10 after 256 steps

I used raylib library to visualise it, thus i got:

Without optimization FPS oscillates about 10 FPS:

With AVX intinsics optimization FPS oscillates about 20 FPS:

both programs were compiled with g++ using further flags (f.ex for avx.cpp):

g++ avx.cpp -o avx.exe -O0 -Wall -Wno-missing-braces -I include/ -L lib/ -lraylib -lopengl32 -lgdi32 -lwinmm -mavx -mavx2

Also i computed "clear" benefit, not considering graphic drawing expenses:

• No-AVX: 13 FPS

• AVX: 50 FPS

In no_graphic way FPS = mean FPS considering 100 computing iterations