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Minor refactoring, be more tolerant w.r.t. vsync timings -> fixes Acid Drop.

This commit is contained in:
Christian Speckner 2017-10-17 22:24:40 +02:00
parent 20c21177ea
commit 86e789a6cf
3 changed files with 3 additions and 5 deletions
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2
src/emucore/tia/TIA.cxx
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@ -1116,7 +1116,7 @@ void TIA::onFrameStart()
{ {
// Only activate it when necessary, since changing colours in // Only activate it when necessary, since changing colours in
// the graphical object forces the TIA cached line to be flushed // the graphical object forces the TIA cached line to be flushed
if (myFrameManager->scanlineCountTransitioned()) if (myFrameManager->scanlineParityChanged())
{ {
myColorLossActive = myFrameManager->scanlinesLastFrame() & 0x1; myColorLossActive = myFrameManager->scanlinesLastFrame() & 0x1;

4
src/emucore/tia/frame-manager/AbstractFrameManager.hxx
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@ -92,10 +92,8 @@ class AbstractFrameManager : public Serializable
/** /**
* Did the number of scanlines switch between even / odd (used for color loss * Did the number of scanlines switch between even / odd (used for color loss
* emulation). * emulation).
*
* TODO: Crappy name, find something better.
*/ */
bool scanlineCountTransitioned() const { bool scanlineParityChanged() const {
return (myPreviousFrameFinalLines & 0x1) != (myCurrentFrameFinalLines & 0x1); return (myPreviousFrameFinalLines & 0x1) != (myCurrentFrameFinalLines & 0x1);
} }

2
src/emucore/tia/frame-manager/FrameManager.cxx
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@ -29,7 +29,7 @@ enum Metrics: uInt32 {
overscanNTSC = 30, overscanNTSC = 30,
overscanPAL = 36, overscanPAL = 36,
vsync = 3, vsync = 3,
maxLinesVsync = 32, maxLinesVsync = 50,
visibleOverscan = 20, visibleOverscan = 20,
tvModeDetectionTolerance = 20, tvModeDetectionTolerance = 20,
initialGarbageFrames = TIAConstants::initialGarbageFrames, initialGarbageFrames = TIAConstants::initialGarbageFrames,