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feat: add the ability to use Sointu as a sync-tracker

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There is a new "sync" opcode that saves the top-most signal every 256 samples to the new "syncBuffer" output. Additionally, you can enable saving the current fractional row as sync[0], avoiding calculating the beat in the shader, but also calculating the beat correctly when the beat is modulated.
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vsariola
2021-03-09 23:47:27 +02:00
parent a3bdf565fd
commit 99dbdfe223
30 changed files with 375 additions and 88 deletions
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8
templates/amd64-386/patch.asm
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@ -14,6 +14,14 @@
;-------------------------------------------------------------------------------
{{.Func "su_run_vm"}}
{{- .PushRegs .CX "DelayWorkSpace" .DX "Synth" .COM "CommandStream" .WRK "Voice" .VAL "ValueStream" | indent 4}}
{{- if .RowSync}}
fild dword [{{.Stack "Sample"}}]
{{.Int .Song.SamplesPerRow | .Prepare | indent 8}}
fidiv dword [{{.Int .Song.SamplesPerRow | .Use}}]
fiadd dword [{{.Stack "Row"}}]
{{.Call "su_op_sync"}}
fstp st0
{{- end}}
su_run_vm_loop: ; loop until all voices done
movzx edi, byte [{{.COM}}] ; edi = command byte
inc {{.COM}} ; move to next instruction