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Refactor timing to allow sync/updates in the middle of a slice

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This commit is contained in:
Connor McLaughlin
2019-09-20 23:59:48 +10:00
parent ad316162f3
commit c988af453c
10 changed files with 74 additions and 36 deletions
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4
src/pse/gpu.cpp
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@ -256,7 +256,7 @@ void GPU::UpdateCRTCConfig()
void GPU::UpdateSliceTicks()
{
// the next event is at the end of the next scanline
#if 1
#if 0
const TickCount ticks_until_next_event = m_crtc_state.ticks_per_scanline - m_crtc_state.current_tick_in_scanline;
#else
// or at vblank. this will depend on the timer config..
@ -267,7 +267,7 @@ void GPU::UpdateSliceTicks()
// convert to master clock, rounding up as we want to overshoot not undershoot
const TickCount system_ticks = (ticks_until_next_event * 7 + 10) / 11;
m_system->SetSliceTicks(system_ticks);
m_system->SetDowncount(system_ticks);
}
void GPU::Execute(TickCount ticks)