this post was submitted on 23 Jun 2025
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Depends on how you define "accurate". Even full ray tracing is just an approximation based on relatively few light rays (on an order of magnitude that doesn't even begin to approach reality) that is deemed to be close enough where increasing the simulation complexity doesn't meaningfully improve visual fidelity, interpolated and passed through a denoising algorithm. You can do close enough with a clever application of light probes, screenspace effects, or using a second camera to render the scene onto a surface (at an appropriate resolution).
That's true, but after a few frames RT (especially with nvidia's ray reconstruction) will usually converge to 'visually indistinguishable from reference' while light probes and such will really never converge. I think that's a pretty significant difference.