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PPU: Fetch sprite color at render time (instead of during hblank)

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This commit is contained in:
Sour 2019-03-16 14:04:21 -04:00
parent 63f6de6a8e
commit 10b76545d6
1 changed files with 6 additions and 4 deletions
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10
Core/Ppu.cpp
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@ -288,7 +288,7 @@ void Ppu::EvaluateNextLineSprites()
if(color != 0) {
uint16_t paletteRamOffset = 256 + (((info.Palette << 4) + color) << 1);
_spritePixels[x] = _cgram[paletteRamOffset] | (_cgram[paletteRamOffset + 1] << 8);
_spritePixels[x] = paletteRamOffset;
_spritePriority[x] = info.Priority;
_spritePalette[x] = info.Palette;
}
@ -536,7 +536,8 @@ void Ppu::RenderSprites()
continue;
}
_mainScreenBuffer[x] = _spritePixels[x];
uint16_t paletteRamOffset = _spritePixels[x];
_mainScreenBuffer[x] = _cgram[paletteRamOffset] | (_cgram[paletteRamOffset + 1] << 8);
_rowPixelFlags[x] |= PixelFlags::Filled | (((_colorMathEnabled & 0x10) && _spritePalette[x] > 3) ? PixelFlags::AllowColorMath : 0);
}
}
@ -547,8 +548,9 @@ void Ppu::RenderSprites()
//This pixel was masked
continue;
}
_subScreenBuffer[x] = _spritePixels[x];
uint16_t paletteRamOffset = _spritePixels[x];
_subScreenBuffer[x] = _cgram[paletteRamOffset] | (_cgram[paletteRamOffset + 1] << 8);
_subScreenFilled[x] = true;
}
}