[Scummvm-tracker] [ScummVM] #10370: Mac PPC 2.0.0 release has MT-32 stutter issue

g5ppc trac at scummvm.org
Tue Dec 19 17:08:53 CET 2017


#10370: Mac PPC 2.0.0 release has MT-32 stutter issue
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  Reporter:  g5ppc   |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  normal  |  Component:  --Unset--
Resolution:          |   Keywords:
      Game:          |
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Comment (by g5ppc):

 I don't think MUNT was built for Mac PPC; I can't seem to find it.

 I tried setting audio_buffer_size to the minimum, 256.  This gave the best
 response.  I assume lower values were being rejected.

 I compared CPU load as shown in Activity Monitor while loading and
 changing between a few screens in KQ6.  The Aug2016 daily very closely
 matched 2.0, but never breaks up.  Interestingly, Aug2016 actually
 registered 105% CPU at a couple points.  If forced to guess, I think any
 shortfall was in what you might call frame-rate, as the Sierra fadeout is
 slower than the real thing.  The CPU loads between the two are so close, I
 can only repeat what should have been obvious on the win32 version of this
 bug:

 I think there is something wrong in how much CPU time the MT32 routines
 are given or when it is given.  I think the build-optimization factor was
 just covering up an underlying issue.

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Ticket URL: <https://bugs.scummvm.org/ticket/10370#comment:2>
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