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If I set breakpoint in idCinematicFFMpeg::ImageForTime, the issue does not happen. I have traced the problem to method idSoundWorldLocal::AddChannelContribution, where finishedbuffers becomes zero no matter what, as the result sound is not queried from cinematics. Normally, finishedbuffers must be equal to the number of OpenAL buffers already played successfully and available for being reused (three OpenAL buffers are used in total). I suspect that this OpenAL implementation is not very reliable. Not to mention that there are almost not OpenAL error checks here =( |
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As a minor comment: when I flied through the training mission with noclip on my old PC, sometimes almost all the sound stopped playing. It may be related to this or not -- to be investigated. |
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Fixed in revision 6997. The OpenAL implementation is really not very good. It relies on the fact that some information won't change during the time interval when sound data is fetched and updated. I made a small change which should fix the problem. I think it might be good to rewrite it from scratch, but I don't want to test it afterwards =) |
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BTW, the problem with stopping sound was not fixed. Moved it into separate issue (see related). |
- Anonymous
