Experiments with GraalVM (https://mattwarren.org/2019/03/01/Is-CSharp-a-low-level-language/ and http://fabiensanglard.net/postcard_pathtracer/index.html and http://fabiensanglard.net/postcard_pathtracer/formatted_full.html)

time-obfuscated-03

# shelajev at dhcp-10-175-173-166.vpn.oracle.com in ~/repo/postcard_pathtracer [19:13:07]
→ clang -o card2 -O3 raytracer.cpp

# shelajev at dhcp-10-175-173-166.vpn.oracle.com in ~/repo/postcard_pathtracer [19:13:23]
→ time ./card2 > pixar.ppm
./card2 > pixar.ppm  

195.15s user 1.35s system 97% cpu 3:21.85 total

unobfuscated-03

# shelajev at dhcp-10-175-219-24.vpn.oracle.com in ~/repo/postcard_pathtracer [19:43:21]
→ clang -o card2 -O3 raytracer_clear.cpp

# shelajev at dhcp-10-175-219-24.vpn.oracle.com in ~/repo/postcard_pathtracer [19:44:57]
→ time ./card2 > pixar_clear.ppm
./card2 > pixar_clear.ppm  

101.96s user 0.49s system 97% cpu 1:44.56 total