Fledge Renderer

A simple scene with some artifacts. This geometry is from Ariel simulator.

Description

Originally A small physically based render to implement volumetric algorithms. Currently, a platform to implement seemingly non-trivial or non-conventional but (probably) useless render architectures and algorithms.

The ultimate and not yet achieved goal for this render is to integrate as diverse techniques within a consistent, fast, aggressive, yet elegant structure as possible ;) In a word, going a step further from conventional PBRT practice!

Anyway, this is solely a personal project aiming to have fun and simultaneously practice my coding skills.

Usage

Unix Makefile is recommended. Use make help to get more information.

Code Structure

• src/:
  • common/: Some header files that could be used in both CPU and GPU backends.
  • experimental/: Some files that perform some unstable optimizations.
  • external/: Those libraries that could optimize some portions of the renderer.
  • gpu/: Some code that implements the interface specified in common/.
  • main/: A directory that contains the executables.
  • materials/: Some material implementations that have the common interface.
  • optix/: OptiX backend
• assets/: Some scene settings for both mitsuba and this renderer.
• tests/: Unit tests

TODO

• Integrate Embree as leaf nodes to accelerate intersection.
• Support XML scene loading
• Integrate OpenImageDenoise
• Add low-discrepancy sampler
• Add naive OptiX backend(WIP)
• Replace OpenVDB with NanoVDB to implement other tracking methods.(WIP)
• Add vectorized code generated by ispc to optimize extremity calculations, e.g., EstimateDirect(), BRDF evaluations, Light Sampling.
• Implement some BVH algos.
• Add Path Guiding Integrator