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Don’t create an AL source for every Sound #18

@linkmauve

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@linkmauve

The current Sound API creates one OpenAL source and one buffer on load.

This becomes an issue when a game tries to preload all of its sounds, as there is a hardcoded limit of 256 sources in OpenAL-Soft: https://github.com/kcat/openal-soft/blob/23259b48dd36ea91f3a2bddd32122b35b1469e4c/alc/alc.cpp#L3496

A possible solution would be to create the source on AudioController::play() and to destroy it on AudioController::stop() or at the end of the playback. Another would be to change the API to have a Sound and a SoundWithSource or whatever, with Into implemented, and only the latter would implement AudioController.

I can’t modify the game’s behaviour, and I think it’s actually valid to preload all of them in order to achieve the lowest latency possible at runtime.

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