25 years on, a stone-cold PC classic gets a fully path-traced upgrade.
The RT version builds on this by replacing the rendering portion with a Vulkan-driven path tracer.
If a scientist wanders in front of the lamp, they now get a matching shadow.
Gordon’s iconic crowbar is significantly shinier too, and also more geometrically complex.
Outside of metals, water and glass now produce realistic, perspective-correct reflections and refraction.
For example, the light rays visible in the original train ride sequence use hand-placed transparent geometry.
