fredholm

Research oriented GPU offline renderer.

Requirements

• C++ 17
• CUDA 11.7
• OptiX 7.5
• OpenGL 4.6(for GUI app, optional)

Features

• Path tracing integrator with multi importance sampling
• Arnold Standard Surface
• Correlated Multi Jittered Sampling
• Hosek Sky Model
• .obj, .gltf scene file
• Post process kernels(Bloom, Chromatic aberration, Tone mapping)

Build

git submodule update --init
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
make

Run

cd build
./app/gui

References

• Arnold Standard Surface
• Estevez, A. C., & Kulla, C. (2017). Production Friendly Microfacet Sheen BRDF. ACM SIGGRAPH 2017.
• Gulbrandsen, O. (2014). Artist friendly metallic fresnel. Journal of Computer Graphics Techniques, 3(4).
• Heitz, E. (2018). Sampling the GGX distribution of visible normals. Journal of Computer Graphics Techniques (JCGT), 7(4), 1-13.
• Hosek, L., & Wilkie, A. (2012). An analytic model for full spectral sky-dome radiance. ACM Transactions on Graphics (TOG), 31(4), 1-9.
• Kensler, A. (2013). Correlated multi-jittered sampling.
• https://www.shadertoy.com/view/wl2SDt
• https://www.shadertoy.com/view/llXyWr
• https://github.com/ingowald/optix7course