Expose the tonemap #90

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opened 2026-10-20 08:49:32 +00:00 by sermuns · 0 comments

sermuns commented

2026-10-20 08:49:32 +00:00

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tone_mapping is fixed ACES with no scale, and night is a hard-coded preset
(AMBIENT_COLOR, sun and moon intensities in liuverse/src/main.rs). The result is
a night that is very dark and a day that is flat, with no knob that fixes either
for a given display or a given weather.

Add an exposure scalar to Globals (there is padding in params) and apply it
before the ACES curve. Expose it as a setting in the pause menu and as a
--exposure / ?exposure= override, so a user can fix a bad monitor and a
screenshot can be taken deliberately.

Auto-exposure from a luminance reduction is the follow-up: the mip chain could
provide the average, but it needs the bloom/downsample work first.

Related: #7 is the revamp; #48 is weather that changes the right exposure.
#92 fades between presets and should fade this too.

`tone_mapping` is fixed ACES with no scale, and night is a hard-coded preset (`AMBIENT_COLOR`, sun and moon intensities in `liuverse/src/main.rs`). The result is a night that is very dark and a day that is flat, with no knob that fixes either for a given display or a given weather. Add an exposure scalar to `Globals` (there is padding in `params`) and apply it before the ACES curve. Expose it as a setting in the pause menu and as a `--exposure` / `?exposure=` override, so a user can fix a bad monitor and a screenshot can be taken deliberately. Auto-exposure from a luminance reduction is the follow-up: the mip chain could provide the average, but it needs the bloom/downsample work first. Related: #7 is the revamp; #48 is weather that changes the right exposure. #92 fades between presets and should fade this too.

sermuns added this to the Rendering milestone

2026-10-20 08:49:32 +00:00

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2026-10-20 08:49:32 +00:00

sermuns referenced this issue

2026-10-20 08:49:43 +00:00

Fade between day and night #92

sermuns referenced this issue from a commit

2026-10-21 10:01:13 +00:00