/Atrc

My path tracer

Primary LanguageC++MIT LicenseMIT

Atrc

Offline rendering lab based on ray tracing

Features

  • Volumetric path tracing with next event estimation
  • Volumetric particle tracing
  • Volumetric bidirectional path tracing
  • Stochastic progressive photon mapping
  • Primary sample space MLT on path tracing
  • ReSTIR renderer
  • Various material models: Disney principled BSDF, phong, DreamWorks fabric ...
  • Homogeneous/heterogeneous participating medium
  • Normalized diffusion BSSRDF
  • Almost all material properties can be specified with 2D/3D textures
  • Various geometry models: sphere, quad, triangle, disk, mesh
  • Two-level accelerating structure (SAH based BVH)
  • Importance sampled environment light
  • G-buffer output (albedo, normal, ...)
  • Depth of field
  • ACES tone mapping
  • Image sample space low-pass filter
  • (Optional) Integrated OIDN library
  • (Optional) Integrated Embree library
  • Interactive scene editor

Known Issues

  • Relation between inv gamma correction & linear sampler of image texture

Documentation

doc

Gallery

Editor:

pic

Food (rendered with bdpt) (scene ref here):

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Juice (rendered with vol_bdpt) (scene ref here):

pic

Classroom (rendered with vol_bdpt) (scene ref here):

pic

Materials: (rendered with pt):

pic

Fog (rendered with vol_bdpt):

pic

BSSRDF (rendered with pt):

pic

Bedroom (rendered with pt) (scene ref here):

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Dining Room (rendered with bdpt) (scene ref here):

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