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VIC: Resolve background color registers separately to color matrix memory

This commit is contained in:
SaxxonPike 2019-07-09 06:55:55 -05:00
parent 9f733d3e7a
commit 89fa153477
3 changed files with 55 additions and 46 deletions
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67
BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.Parse.cs
View File

@ -46,6 +46,8 @@
private int _parsePixelDataIndex;
private int _parseSrData0;
private int _parseSrData1;
private int _parseSrShift;
private bool _parseSrColorEnable;
private void ParseCycle()
{
@ -106,8 +108,9 @@
}
// graphics data shift register
_srData1 &= ~(0xFF << (7 - _xScroll));
_srActive |= 0xFF << (7 - _xScroll);
_parseSrShift = 7 - _xScroll;
_srData1 &= ~(0xFF << _parseSrShift);
_srActive |= 0xFF << _parseSrShift;
if (_multicolorMode && (_bitmapMode || (_dataC & 0x800) != 0))
{
@ -119,13 +122,13 @@
_parseSrData0 = _bitmapMode ? 0 : _dataG;
_parseSrData1 = _dataG;
}
_srData1 |= _parseSrData1 << (7 - _xScroll);
_srData1 |= _parseSrData1 << _parseSrShift;
// graphics color shift register
_srColor0 &= ~(0xFF << (7 - _xScroll));
_srColor1 &= ~(0xFF << (7 - _xScroll));
_srColor2 &= ~(0xFF << (7 - _xScroll));
_srColor3 &= ~(0xFF << (7 - _xScroll));
_srColor0 &= ~(0xFF << _parseSrShift);
_srColor1 &= ~(0xFF << _parseSrShift);
_srColor2 &= ~(0xFF << _parseSrShift);
_srColor3 &= ~(0xFF << _parseSrShift);
for (_parsePixelDataIndex = 7; _parsePixelDataIndex >= 0; _parsePixelDataIndex--)
{
_parsePixelData = ((_parseSrData0 & 0x80) >> 7) | ((_parseSrData1 & 0x80) >> 6);
@ -133,24 +136,20 @@
{
case VideoMode000:
case VideoMode001:
switch (_parsePixelData)
if (_parsePixelData == 3)
{
case 0:
_pixel = _backgroundColor0;
break;
case 1:
_pixel = _idle ? 0 : _backgroundColor1;
break;
case 2:
_pixel = _idle ? 0 :_backgroundColor2;
break;
default:
_pixel = _idle ? 0 : (_multicolorMode ? _dataC & 0x700 : _dataC) >> 8;
break;
_pixel = _idle ? 0 : (_multicolorMode ? _dataC & 0x700 : _dataC) >> 8;
_parseSrColorEnable = true;
}
else
{
_pixel = _parsePixelData;
_parseSrColorEnable = false;
}
break;
case VideoMode010:
case VideoMode011:
_parseSrColorEnable = _parsePixelData != 0;
switch (_parsePixelData)
{
case 0:
@ -171,25 +170,12 @@
if (_parsePixelData != 0)
{
_pixel = _idle ? 0 : _dataC >> 8;
_parseSrColorEnable = true;
}
else
{
_pixel = (_dataC & 0xC0) >> 6;
switch (_pixel)
{
case 0:
_pixel = _backgroundColor0;
break;
case 1:
_pixel = _idle ? 0 : _backgroundColor1;
break;
case 2:
_pixel = _idle ? 0 : _backgroundColor2;
break;
default:
_pixel = _idle ? 0 : _backgroundColor3;
break;
}
_parseSrColorEnable = false;
}
break;
default:
@ -200,10 +186,11 @@
_parseSrData0 <<= 1;
_parseSrData1 <<= 1;
_srColor0 |= (_pixel & 1) << (7 - _xScroll + _parsePixelDataIndex);
_srColor1 |= ((_pixel >> 1) & 1) << (7 - _xScroll + _parsePixelDataIndex);
_srColor2 |= ((_pixel >> 2) & 1) << (7 - _xScroll + _parsePixelDataIndex);
_srColor3 |= ((_pixel >> 3) & 1) << (7 - _xScroll + _parsePixelDataIndex);
_srColor0 |= (_pixel & 1) << (_parseSrShift + _parsePixelDataIndex);
_srColor1 |= ((_pixel >> 1) & 1) << (_parseSrShift + _parsePixelDataIndex);
_srColor2 |= ((_pixel >> 2) & 1) << (_parseSrShift + _parsePixelDataIndex);
_srColor3 |= ((_pixel >> 3) & 1) << (_parseSrShift + _parsePixelDataIndex);
_srColorEnable |= (_parseSrColorEnable ? 1 : 0) << (_parseSrShift + _parsePixelDataIndex);
}
break;

33
BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.Render.cs
View File

@ -17,6 +17,7 @@
private int _srColor3;
private int _srData1;
private int _srActive;
private int _srColorEnable;
private int _videoMode;
private int _borderOnShiftReg;
@ -65,12 +66,31 @@
#endregion
// render graphics
_pixel = (_srActive & SrMask1) != 0
? ((_srColor0 & SrMask1) >> 18) |
((_srColor1 & SrMask1) >> 17) |
((_srColor2 & SrMask1) >> 16) |
((_srColor3 & SrMask1) >> 15)
: _backgroundColor0;
if ((_srColorEnable & SrMask1) != 0)
{
_pixel = ((_srColor0 & SrMask1) >> 18) |
((_srColor1 & SrMask1) >> 17) |
((_srColor2 & SrMask1) >> 16) |
((_srColor3 & SrMask1) >> 15);
}
else
{
switch (((_srColor0 & SrMask1) >> 18) | ((_srColor1 & SrMask1) >> 17))
{
case 1:
_pixel = _backgroundColor1;
break;
case 2:
_pixel = _backgroundColor2;
break;
case 3:
_pixel = _backgroundColor3;
break;
default:
_pixel = _backgroundColor0;
break;
}
}
// render sprites
_pixelOwner = -1;
@ -203,6 +223,7 @@
_srColor3 <<= 1;
_srData1 <<= 1;
_srActive <<= 1;
_srColorEnable <<= 1;
}
if (_pixBufferBorderIndex >= PixBorderBufferSize)

1
BizHawk.Emulation.Cores/Computers/Commodore64/MOS/Vic.State.cs
View File

@ -51,6 +51,7 @@ namespace BizHawk.Emulation.Cores.Computers.Commodore64.MOS
private int _rasterInterruptLine;
private bool _rasterInterruptTriggered;
private int _rasterLine;
private int _rasterLineInterruptCompare;
private int _rasterX;
private bool _rasterXHold;
private int _rc;