Latest tasks for AdaPT

[Enigmatisms]

The latest tasks for AdaPT:

• Making the geometry more variable and look smooth. Normal mapping / bump mapping / vertex normal should be done. (task for 1.4.0, highest priority)
• Making python->taichi loading faster (1000 prims per second, too slow) (task for 1.4.0, highest priority)
• Making rendering faster (careful code optimization) (task for 1.4.0, 2nd priority)
• More BSDF and emitter:
  • For BSDF, there are three things I wanna do: (1) plastic material implementation. (2) refactoring for mod-phong (possibly-wrong implementation) and det-refract (unable to control the reflected ratio on surface). (3) Oren and Nayar rough diffusive BSDF. (2nd priority)
• Image reconstruction filter and advanced sampling methods (like equiangular sampling, forward-scattering sampling) (3rd priority)
• KD-tree accelerator: this is just for training purpose (C++ / pybind / algorithm) (4th priority)
• Logic check for single-sided mesh BRDF (we can actually hit both sides if the mesh is not closed, and standard is_mi checking will fail) (highest priority)

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Done

• Texture mapping and shading normal should be implemented. This will make AdaPT fully usable for producing realistic scene rendering. (1.3.0)
• Emitter: Implement spot light source. I think..., spot source (limited angular distribution) can be applied to a wider range like area sources?

After tasks with equal-to and higher-than 3rd-level priority being finished, check the rendering result (against PBRT and mitsuba again). Then v1.3.0 can be released.

[Enigmatisms]

To better configure the scene (before rendering, especially to examine albedo), scene_viz.py should be modified to support albedo visualization.

[Enigmatisms]

1.3.0 will be release with:

• Texture packing and texture mapping
• Rendering checkpoint
• rich console support

Since this is not appropriate for a minor version to release that many features.

[Enigmatisms]

Staled tasks.