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The technique is capable of producing a very high degree of visual realism, usually higher than that of typical scan line rendering methods,but at a grater computational cost.(Wikipedia [https://en.wikipedia.org/wiki/Ray_tracing_(graphics)]).
Source code taken from this location.[https://www.scratchapixel.com/code.php?id=3&origin=/lessons/3d-basic-rendering/introduction-to-ray-tracing]
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Compile using the following command -
g++ -O2 -std=c++0x -pg raytracer.cpp -o raytracer
Profile using the command
gprof -p -b ./raytracer gmon.out > raytracer.flt
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==Profile generated==
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls us/call us/call name
81.82 0.36 0.36 307200 1.17 1.17 trace(Vec3<float> const&, Vec3<float> const&, std::vector<Sphere, std::allocator<Sphere> > const&, int const&)
18.18 0.44 0.08 render(std::vector<Sphere, std::allocator<Sphere> > const&)
0.00 0.44 0.00 4 0.00 0.00 void std::vector<Sphere, std::allocator<Sphere> >::_M_insert_aux<Sphere>(__gnu_cxx::__normal_iterator<Sphere*, std::vector<Sphere, std::allocator<Sphere> > >, Sphere&&)
0.00 0.44 0.00 1 0.00 0.00 _GLOBAL__sub_I__Z3mixRKfS0_S0_
= Assignment 2 =
