GPU: Fix missing sync when hblank is pending

4 years ago · ef7d135492
parent 9d80c48d6f
commit ef7d135492
1 changed files with 3 additions and 2 deletions
--- a/src/core/gpu.cpp
+++ b/src/core/gpu.cpp
@ -772,7 +772,8 @@ void GPU::UpdateCRTCTickEvent()

 bool GPU::IsCRTCScanlinePending() const
 {
-  return (GetPendingCRTCTicks() + m_crtc_state.current_tick_in_scanline) >= m_crtc_state.horizontal_total;
+  const TickCount ticks = (GetPendingCRTCTicks() + m_crtc_state.current_tick_in_scanline);
+  return (ticks >= (m_crtc_state.in_hblank ? m_crtc_state.horizontal_total : m_crtc_state.horizontal_sync_start));
 }

 bool GPU::IsCommandCompletionPending() const