Ambient Occlusion/Obscurance algorithm, with a bilateral filter as an edge-aware blur to smooth out the noise in thecalculated ambient occlusion factor.
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This effect is showing the light scattering. It’s implemented by Light Volume, not ray matching.
An HDR environment map to provide surround lighting.
A micro-facet BRDF to provide realistic surface lighting calculations
The mapping of a High-Dynamic-Range image onto a Low-Dynamic-Range device.
Blur shadow depth buffer and get a smooth shadow. Use computer shader to do the blur process.
Implemented CPU ray tracing. Path tracing, GGX, reflection, transmission, image based lighting(IBL) and constructive solid geometry(CSG).
Path tracing.
Reflection.
Transmission.
Image based lighting(IBL) and constructive solid geometry(CSG).