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

PPM (portable pixmap) format

https://en.wikipedia.org/wiki/Netpbm#PPM_example

display (ImageMagick)

MSYS2 (DOES NOT WORK):

pacman -S mingw-w64-x86_64-imagemagick

Step by step

    make step01
    ./step01 > step01.ppm
    display step01.ppm

    make step02
    ./step02 > step02.ppm
    display step02.ppm

    make step03
    ./step03 > step03.ppm
    display step03.ppm

    make step04
    ./step04 r > step04-red.ppm
    ./step04 b > step04-blue.ppm
    ./step04 g > step04-green.ppm
    display step04-blue.ppm
    display step04-green.ppm
    display step04-red.ppm

    make step05
    ./step05 r > step05-red.ppm
    ./step05 b > step05-blue.ppm
    ./step05 g > step05-green.ppm
    display step05-blue.ppm
    display step05-green.ppm
    display step05-red.ppm

    make step06
    ./step06 b > step06-blue.ppm
    display step06-blue.ppm

    make step07
    ./step07 b > step07-blue.ppm
    display step07-blue.ppm

    make step08
    ./step08 > step08-blue.ppm
    display step08-blue.ppm