Atmospheric light scattering FAQ: Difference between revisions

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As usual, implementations are a tradeoff between visuals, performance footprint and implementation friendliness and it is impossible to maximize all three at the same time. The guideline for ALS has been to consistently allocate most performance for what is seen most during normal use of the sim (e.g. in cockpit visuals are more important than external visuals, views from the air are more important than close-up ground views,...) and that implementation friendliness is not a design criterion since this saves a lot of performance (aircraft maintainers are required to pre-compute effects rather than add a few lines of xml).
As usual, implementations are a tradeoff between visuals, performance footprint and implementation friendliness and it is impossible to maximize all three at the same time. The guideline for ALS has been to consistently allocate most performance for what is seen most during normal use of the sim (e.g. in cockpit visuals are more important than external visuals, views from the air are more important than close-up ground views,...) and that implementation friendliness is not a design criterion since this saves a lot of performance (aircraft maintainers are required to pre-compute effects rather than add a few lines of xml).


=== I think ALS really should have effect XY - what should I do? ===
== I think ALS really should have effect XY - what should I do? ==


Create a performance-friendly implementation of it and submit a patch providing the effect announcing it on the mailing list. Or, if you can't do that, try a polite question.
Create a performance-friendly implementation of it and submit a patch providing the effect announcing it on the mailing list. Or, if you can't do that, try a polite question.
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