Implement importance sampling for NoHit

nonl4331 / raytracing-rust

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Implement importance sampling for NoHit #1

Closed nonl4331 closed 1 year ago

nonl4331 commented 2 years ago

Description Currently, only Primitives are able to be importance sampled. Also being able to sample NoHit which often is a source of lighting would help scenes converge faster.

Tasks

[x] Discrete 1D and 2D PDF sampling
[x] Tests for 1D and 2D Sampling
[x] Generate 2D (UV) PDF from Texture
[x] Implementation for Sky
[x] Tests for NoHit sampling (for Sky)
[ ] MIS code

nonl4331 commented 2 years ago

[ ] Investigate #2 This is low priority and should not block merging into the main branch.