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NES: Fix MMC5 sprite display when using 8x16 mode with 8kb window and reduce sprite flicker enabled (#60)

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James Rowe 2024-05-09 04:39:12 -05:00 committed by GitHub
parent 5b69530ab0
commit 78130ed3bb
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1 changed files with 6 additions and 1 deletions
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7
Core/NES/NesPpu.cpp
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@ -913,13 +913,18 @@ template<class T> void NesPpu<T>::ProcessScanlineImpl()
//copy vertical scrolling value from t
_videoRamAddr = (_videoRamAddr & ~0x7BE0) | (_tmpVideoRamAddr & 0x7BE0);
}
// Load the extra sprites before tile loading starts (which matters for MMC5)
// The CHR banks are switched back to the bg tileset in LoadTileInfo on cycle 321
// and the extra sprites will potentially read from the wrong banks
if(_cycle == 320) {
LoadExtraSprites();
}
}
} else if(_cycle >= 321 && _cycle <= 336) {
LoadTileInfo();
if(_cycle == 321) {
if(IsRenderingEnabled()) {
LoadExtraSprites();
_oamCopybuffer = _secondarySpriteRam[0];
}
} else if(_prevRenderingEnabled && (_cycle == 328 || _cycle == 336)) {