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Optimization ideas #1

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superctr opened this issue Apr 4, 2020 · 0 comments
Open
1 of 2 tasks

Optimization ideas #1

superctr opened this issue Apr 4, 2020 · 0 comments
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enhancement New feature or request

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@superctr
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superctr commented Apr 4, 2020 •
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  • Currently I measured the runtime to 10 lines if 4 FM channels are active but not updated
  • Trigger priority calculation based on channel allocation/deallocation rather than always doing it on each frame.
  • Skip pitch calculation routine when not needed. I think checking a bitmask of the following new flags:
    • pitch envelope active. Set by new note, cleared if pitch envelope is finished or not active.
    • portamento active. Set by new note, cleared if portamento is completed
    • pitch update triggered by new note, dtn or trs commands
@superctr superctr added the enhancement New feature or request label Apr 5, 2020
superctr added a commit that referenced this issue Jun 22, 2020
@superctr
#1 Optimize song and track update loops
f9148c9 
- Priority is only recalculated when tracks are started/stopped.
  Reduces cpu load by at least 20-30% when a lot of tracks are playing.

- Some minor CPU cycle shaving in the song and track update loops.
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