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SPU: Move voice key off/on outside sample loop 

Should be a very tiny performance boost with no difference in behaviour.
This commit is contained in:
Connor McLaughlin 2021-01-20 12:32:36 +10:00
parent 8c8f29c047
commit 4e802e90ca
1 changed files with 24 additions and 15 deletions
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39
src/core/spu.cpp
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@ -1745,10 +1745,6 @@ void SPU::Execute(TickCount ticks)
s32 reverb_in_left = 0;
s32 reverb_in_right = 0;
u32 key_on_register = m_key_on_register;
m_key_on_register = 0;
u32 key_off_register = m_key_off_register;
m_key_off_register = 0;
u32 reverb_on_register = m_reverb_on_register;
for (u32 voice = 0; voice < NUM_VOICES; voice++)
@ -1763,17 +1759,6 @@ void SPU::Execute(TickCount ticks)
reverb_in_right += right;
}
reverb_on_register >>= 1;
if (key_off_register & 1u)
m_voices[voice].KeyOff();
key_off_register >>= 1;
if (key_on_register & 1u)
{
m_endx_register &= ~(1u << voice);
m_voices[voice].KeyOn();
}
key_on_register >>= 1;
}
if (!m_SPUCNT.mute_n)
@ -1823,6 +1808,30 @@ void SPU::Execute(TickCount ticks)
WriteToCaptureBuffer(2, static_cast<s16>(Clamp16(m_voices[1].last_volume)));
WriteToCaptureBuffer(3, static_cast<s16>(Clamp16(m_voices[3].last_volume)));
IncrementCaptureBufferPosition();
// Key off/on voices after the first frame.
if (i == 0 && (m_key_off_register != 0 || m_key_on_register != 0))
{
u32 key_off_register = m_key_off_register;
m_key_off_register = 0;
u32 key_on_register = m_key_on_register;
m_key_on_register = 0;
for (u32 voice = 0; voice < NUM_VOICES; voice++)
{
if (key_off_register & 1u)
m_voices[voice].KeyOff();
key_off_register >>= 1;
if (key_on_register & 1u)
{
m_endx_register &= ~(1u << voice);
m_voices[voice].KeyOn();
}
key_on_register >>= 1;
}
}
}
if (m_dump_writer)