this post was submitted on 05 Dec 2024
621 points (98.6% liked)
PC Gaming
8760 readers
720 users here now
For PC gaming news and discussion. PCGamingWiki
Rules:
- Be Respectful.
- No Spam or Porn.
- No Advertising.
- No Memes.
- No Tech Support.
- No questions about buying/building computers.
- No game suggestions, friend requests, surveys, or begging.
- No Let's Plays, streams, highlight reels/montages, random videos or shorts.
- No off-topic posts/comments, within reason.
- Use the original source, no clickbait titles, no duplicates. (Submissions should be from the original source if possible, unless from paywalled or non-english sources. If the title is clickbait or lacks context you may lightly edit the title.)
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
I've seen an awesome "kludge" method where, instead of simulating billions of photons bouncing in billions of directions off every surface in the entire world, they are taking extremely low resolution cube map snapshots from the perspective of surfaces on a "one per square(area)" basis once every couple frames and blending between them over distance to inform the diffuse lighting of a scene as if it were ambient light mapping rather than direct light. Which is cool because not only can it represent the brightness of emissive textures, but it also makes it less necessary to manually fill scenes with manually placed key lights, fill lights, and backlights.
I am not educated enough to understand this comment
Light probes, but they don't update well, because you have to render the world from their point of view frequently, so they're not suited for dynamic environments
They don't need to update well; they're a compromise to achieve slightly more reactive lighting than 'baked' ambient lights. Perhaps one could describe it as 'parbaked'. Only the ones directly affected by changes of scene conditions need to be updated, and some tentative precalculations for "likely" changes can be tackled in advance while pre-established probes contribute no additional process load because they aren't being updated unless, as previously stated, something acts on them. IF direct light changes and "sticks" long enough to affect the probes, any perceived 'lag' in the light changes will be glossed over by the player's brain as "oh, my characters' eyes are adjusting, neat how they accommodated for that."--even though it's not actually intentional but rather a drawback of the technology's limitations.