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SNES: gain macro

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This commit is contained in:
tildearrow 2022-10-03 18:40:07 -05:00
parent 19be95f78a
commit 4eed3dbc4d
2 changed files with 42 additions and 6 deletions
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23
src/engine/platform/snes.cpp
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@ -161,6 +161,29 @@ void DivPlatformSNES::tick(bool sysTick) {
if (chan[i].std.vol.had || chan[i].std.panL.had || chan[i].std.panR.had || hasInverted) {
writeOutVol(i);
}
if (chan[i].std.ex2.had) {
if (chan[i].std.ex2.val&0x80) {
switch (chan[i].std.ex2.val&0x60) {
case 0x00:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LINEAR;
break;
case 0x20:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LOG;
break;
case 0x40:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_LINEAR;
break;
case 0x60:
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_INVLOG;
break;
}
chan[i].state.gain=chan[i].std.ex2.val&31;
} else {
chan[i].state.gainMode=DivInstrumentSNES::GAIN_MODE_DIRECT;
chan[i].state.gain=chan[i].std.ex2.val&127;
}
writeEnv(i);
}
if (chan[i].setPos) {
// force keyon
chan[i].keyOn=true;