Spherical Harmonics Exponentiation
Implementation of Real-time Soft Shadows in Dynamic Scenes using Spherical Harmonic Exponentiation. Supports static scene of diffuse objects and area / environment light.
Build & Run
Linux dependencies for glfw: xorg-dev libgl1-mesa-dev
build
mkdir build && cd build
cmake ..
make
run interactive
./playground
output single image then quit
./playground -s
To test at different SH order, edit shorder.hpp
To change scene configuration / SHEXP algorithm, edit main.cpp
Note: To obtain best results, theta_max and theta_min should be tuned.
Preprocess tools
util/envmap project θ-φ parameterized light probe image onto SH bases.
util/makelut precompute shlog of visibility functions & corresponding shexp OL coefficients.
gamma/src/makesparse tabulate SH tripling tensor
github.com/111116/sphere-set-approximation generate sphere representation of object.