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AxibugEmuOnline/AxibugEmuOnline.Client/Assets/VirtualNes.Core/PPU.cs

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Mapper补全
2024-08-05 11:52:43 +08:00
using System;
namespace VirtualNes.Core
VirtuaNesCore翻译中
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{
public class PPU
{
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public const int SCREEN_WIDTH = 256 + 16;
public const int SCREEN_HEIGHT = 240;
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private static byte[][] CreateCOLORMAP()
{
byte[][] res = new byte[5][];
res[0] = new byte[64]
{ 0x35, 0xFF, 0x16, 0x22, 0x1C, 0xFF, 0xFF, 0x15,
0xFF, 0x00, 0x27, 0x05, 0x04, 0x27, 0x08, 0x30,
0x21, 0xFF, 0xFF, 0x29, 0x3C, 0xFF, 0x36, 0x12,
0xFF, 0x2B, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01,
0xFF, 0x31, 0xFF, 0x2A, 0x2C, 0x0C, 0xFF, 0xFF,
0xFF, 0x07, 0x34, 0x06, 0x13, 0xFF, 0x26, 0x0F,
0xFF, 0x19, 0x10, 0x0A, 0xFF, 0xFF, 0xFF, 0x17,
0xFF, 0x11, 0x09, 0xFF, 0xFF, 0x25, 0x18, 0xFF
};
res[1] = new byte[64]
{ 0xFF, 0x27, 0x18, 0xFF, 0x3A, 0x25, 0xFF, 0x31,
0x16, 0x13, 0x38, 0x34, 0x20, 0x23, 0x31, 0x1A,
0xFF, 0x21, 0x06, 0xFF, 0x1B, 0x29, 0xFF, 0x22,
0xFF, 0x24, 0xFF, 0xFF, 0xFF, 0x08, 0xFF, 0x03,
0xFF, 0x36, 0x26, 0x33, 0x11, 0xFF, 0x10, 0x02,
0x14, 0xFF, 0x00, 0x09, 0x12, 0x0F, 0xFF, 0x30,
0xFF, 0xFF, 0x2A, 0x17, 0x0C, 0x01, 0x15, 0x19,
0xFF, 0x2C, 0x07, 0x37, 0xFF, 0x05, 0xFF, 0xFF
};
res[2] = new byte[64]
{ 0xFF, 0xFF, 0xFF, 0x10, 0x1A, 0x30, 0x31, 0x09,
0x01, 0x0F, 0x36, 0x08, 0x15, 0xFF, 0xFF, 0xF0,
0x22, 0x1C, 0xFF, 0x12, 0x19, 0x18, 0x17, 0xFF,
0x00, 0xFF, 0xFF, 0x02, 0x16, 0x06, 0xFF, 0x35,
0x23, 0xFF, 0x8B, 0xF7, 0xFF, 0x27, 0x26, 0x20,
0x29, 0xFF, 0x21, 0x24, 0x11, 0xFF, 0xEF, 0xFF,
0x2C, 0xFF, 0xFF, 0xFF, 0x07, 0xF9, 0x28, 0xFF,
0x0A, 0xFF, 0x32, 0x37, 0x13, 0xFF, 0xFF, 0x0C
};
res[3] = new byte[64]
{ 0x18, 0xFF, 0x1C, 0x89, 0x0F, 0xFF, 0x01, 0x17, // 00-07
0x10, 0x0F, 0x2A, 0xFF, 0x36, 0x37, 0x1A, 0xFF, // 08-0F
0x25, 0xFF, 0x12, 0xFF, 0x0F, 0xFF, 0xFF, 0x26, // 10-17
0xFF, 0xFF, 0x22, 0xFF, 0xFF, 0x0F, 0x3A, 0x21, // 18-1F
0x05, 0x0A, 0x07, 0xC2, 0x13, 0xFF, 0x00, 0x15, // 20-27
0x0C, 0xFF, 0x11, 0xFF, 0xFF, 0x38, 0xFF, 0xFF, // 28-2F
0xFF, 0xFF, 0x08, 0x16, 0xFF, 0xFF, 0x30, 0x3C, // 30-37
0x0F, 0x27, 0xFF, 0x60, 0x29, 0xFF, 0x30, 0x09 // 38-3F
};
res[4] = new byte[64]
{
// Super Xevious/Gradius
0x35, 0xFF, 0x16, 0x22, 0x1C, 0x09, 0xFF, 0x15, // 00-07
0x20, 0x00, 0x27, 0x05, 0x04, 0x28, 0x08, 0x30, // 08-0F
0x21, 0xFF, 0xFF, 0x29, 0x3C, 0xFF, 0x36, 0x12, // 10-17
0xFF, 0x2B, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, // 18-1F
0xFF, 0x31, 0xFF, 0x2A, 0x2C, 0x0C, 0x1B, 0xFF, // 20-27
0xFF, 0x07, 0x34, 0x06, 0xFF, 0x25, 0x26, 0x0F, // 28-2F
0xFF, 0x19, 0x10, 0x0A, 0xFF, 0xFF, 0xFF, 0x17, // 30-37
0xFF, 0x11, 0x1A, 0xFF, 0x38, 0xFF, 0x18, 0x3A, // 38-3F
};
return res;
}
private static byte[][] VSColorMap = CreateCOLORMAP();
翻译中
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// PPU Control Register #1 PPU #0
public const byte PPU_VBLANK_BIT = 0x80;
public const byte PPU_SPHIT_BIT = 0x40; // 堘偆丠
public const byte PPU_SP16_BIT = 0x20;
public const byte PPU_BGTBL_BIT = 0x10;
public const byte PPU_SPTBL_BIT = 0x08;
public const byte PPU_INC32_BIT = 0x04;
public const byte PPU_NAMETBL_BIT = 0x03;
// PPU Control Register #2 PPU #1
public const byte PPU_BGCOLOR_BIT = 0xE0;
public const byte PPU_SPDISP_BIT = 0x10;
public const byte PPU_BGDISP_BIT = 0x08;
public const byte PPU_SPCLIP_BIT = 0x04;
public const byte PPU_BGCLIP_BIT = 0x02;
public const byte PPU_COLORMODE_BIT = 0x01;
// PPU Status Register PPU #2
public const byte PPU_VBLANK_FLAG = 0x80;
public const byte PPU_SPHIT_FLAG = 0x40;
public const byte PPU_SPMAX_FLAG = 0x20;
public const byte PPU_WENABLE_FLAG = 0x10;
// SPRITE Attribute
public const byte SP_VMIRROR_BIT = 0x80;
public const byte SP_HMIRROR_BIT = 0x40;
public const byte SP_PRIORITY_BIT = 0x20;
public const byte SP_COLOR_BIT = 0x03;
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private NES nes;
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private bool bExtLatch; // For MMC5
private bool bChrLatch; // For MMC2/MMC4
private bool bExtNameTable; // For Super Monkey no Dai Bouken
private bool bExtMono; // For Final Fantasy
private ushort loopy_y;
private ushort loopy_shift;
VirtuaNesCore翻译中
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private byte[] lpScreen;
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/// <summary> 作为lpScreen数组的索引 </summary>
private int lpScanline;
private int ScanlineNo;
VirtuaNesCore翻译中
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private byte[] lpColormode;
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VirtuaNesCore翻译中
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private bool bVSMode;
private int nVSColorMap;
private byte VSSecurityData;
private byte[] Bit2Rev = new byte[256];
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翻译中
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VirtuaNesCore翻译中
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public PPU(NES nes)
{
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this.nes = nes;
VirtuaNesCore翻译中
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lpScreen = null;
lpColormode = null;
bVSMode = false;
nVSColorMap = -1;
VSSecurityData = 0;
for (int i = 0; i < 256; i++)
{
byte m = 0x80;
byte c = 0;
for (int j = 0; j < 8; j++)
{
if ((i & (1 << j)) > 0) c |= m;
m >>= 1;
}
Bit2Rev[i] = c;
}
}
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迭代
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public void Dispose() { }
翻译中
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翻译中
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internal byte Read(ushort addr)
{
byte data = 0x00;
switch (addr)
{
// Write only Register
case 0x2000: // PPU Control Register #1(W)
case 0x2001: // PPU Control Register #2(W)
case 0x2003: // SPR-RAM Address Register(W)
case 0x2005: // PPU Scroll Register(W2)
case 0x2006: // VRAM Address Register(W2)
data = MMU.PPU7_Temp; // 懡暘
break;
// Read/Write Register
case 0x2002: // PPU Status Register(R)
//DEBUGOUT( "2002 RD L:%3d C:%8d\n", ScanlineNo, nes->cpu->GetTotalCycles() );
data = (byte)(MMU.PPUREG[2] | VSSecurityData);
MMU.PPU56Toggle = 0;
byte temp = unchecked((byte)~PPU_VBLANK_FLAG);
MMU.PPUREG[2] &= temp;
break;
case 0x2004: // SPR_RAM I/O Register(RW)
data = MMU.SPRAM[MMU.PPUREG[3]++];
break;
case 0x2007: // VRAM I/O Register(RW)
addr = (ushort)(MMU.loopy_v & 0x3FFF);
data = MMU.PPU7_Temp;
if ((MMU.PPUREG[0] & PPU_INC32_BIT) != 0) MMU.loopy_v += 32;
else MMU.loopy_v++;
if (addr >= 0x3000)
{
if (addr >= 0x3F00)
{
// data &= 0x3F;
if ((addr & 0x0010) == 0)
{
return MMU.BGPAL[addr & 0x000F];
}
else
{
return MMU.SPPAL[addr & 0x000F];
}
}
addr &= 0xEFFF;
}
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MMU.PPU7_Temp = MMU.PPU_MEM_BANK[addr >> 10][addr & 0x03FF];
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break;
}
return data;
}
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internal void SetRenderScanline(int scanline)
{
ScanlineNo = scanline;
if (scanline < 240)
{
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lpScanline = (SCREEN_WIDTH) * scanline;
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}
}
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internal void Write(ushort addr, byte data)
{
if (bVSMode && VSSecurityData != 0)
{
if (addr == 0x2000)
{
addr = 0x2001;
}
else if (addr == 0x2001)
{
addr = 0x2000;
}
}
switch (addr)
{
// Read only Register
case 0x2002: // PPU Status register(R)
break;
// Write Register
case 0x2000: // PPU Control Register #1(W)
// NameTable select
// t:0000110000000000=d:00000011
MMU.loopy_t = (ushort)((MMU.loopy_t & 0xF3FF) | ((data & 0x03) << 10));
if ((data & 0x80) != 0 && (MMU.PPUREG[0] & 0x80) == 0 && (MMU.PPUREG[2] & 0x80) != 0)
{
nes.cpu.NMI(); // hmm...
}
MMU.PPUREG[0] = data;
break;
case 0x2001: // PPU Control Register #2(W)
MMU.PPUREG[1] = data;
break;
case 0x2003: // SPR-RAM Address Register(W)
MMU.PPUREG[3] = data;
break;
case 0x2004: // SPR_RAM I/O Register(RW)
MMU.SPRAM[MMU.PPUREG[3]++] = data;
break;
case 0x2005: // PPU Scroll Register(W2)
//DEBUGOUT( "SCR WRT L:%3d C:%8d\n", ScanlineNo, nes->cpu->GetTotalCycles() );
if (MMU.PPU56Toggle == 0)
{
// First write
// tile X t:0000000000011111=d:11111000
MMU.loopy_t = (ushort)((MMU.loopy_t & 0xFFE0) | ((data) >> 3));
// scroll offset X x=d:00000111
MMU.loopy_x = (ushort)(data & 0x07);
}
else
{
// Second write
// tile Y t:0000001111100000=d:11111000
MMU.loopy_t = (ushort)((MMU.loopy_t & 0xFC1F) | (((data) & 0xF8) << 2));
// scroll offset Y t:0111000000000000=d:00000111
MMU.loopy_t = (ushort)((MMU.loopy_t & 0x8FFF) | (((data) & 0x07) << 12));
}
MMU.PPU56Toggle = (byte)(MMU.PPU56Toggle == 0 ? 1 : 0);
break;
case 0x2006: // VRAM Address Register(W2)
if (MMU.PPU56Toggle == 0)
{
// First write
// t:0011111100000000=d:00111111
// t:1100000000000000=0
MMU.loopy_t = (ushort)((MMU.loopy_t & 0x00FF) | (((data) & 0x3F) << 8));
}
else
{
// Second write
// t:0000000011111111=d:11111111
MMU.loopy_t = (ushort)((MMU.loopy_t & 0xFF00) | data);
// v=t
MMU.loopy_v = MMU.loopy_t;
nes.mapper.PPU_Latch(MMU.loopy_v);
}
MMU.PPU56Toggle = (byte)(MMU.PPU56Toggle == 0 ? 1 : 0);
break;
case 0x2007: // VRAM I/O Register(RW)
ushort vaddr = (ushort)(MMU.loopy_v & 0x3FFF);
if ((MMU.PPUREG[0] & PPU_INC32_BIT) != 0) MMU.loopy_v += 32;
else MMU.loopy_v++;
if (vaddr >= 0x3000)
{
if (vaddr >= 0x3F00)
{
data &= 0x3F;
if (bVSMode && nVSColorMap != -1)
{
byte temp = VSColorMap[nVSColorMap][data];
if (temp != 0xFF)
{
data = (byte)(temp & 0x3F);
}
}
if ((vaddr & 0x000F) == 0)
{
MMU.BGPAL[0] = MMU.SPPAL[0] = data;
}
else if ((vaddr & 0x0010) == 0)
{
MMU.BGPAL[vaddr & 0x000F] = data;
}
else
{
MMU.SPPAL[vaddr & 0x000F] = data;
}
MMU.BGPAL[0x04] = MMU.BGPAL[0x08] = MMU.BGPAL[0x0C] = MMU.BGPAL[0x00];
MMU.SPPAL[0x00] = MMU.SPPAL[0x04] = MMU.SPPAL[0x08] = MMU.SPPAL[0x0C] = MMU.BGPAL[0x00];
return;
}
vaddr &= 0xEFFF;
}
if (MMU.PPU_MEM_TYPE[vaddr >> 10] != MMU.BANKTYPE_VROM)
{
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MMU.PPU_MEM_BANK[vaddr >> 10][vaddr & 0x03FF] = data;
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}
break;
}
}
internal void DMA(byte data)
{
ushort addr = (ushort)(data << 8);
for (ushort i = 0; i < 256; i++)
{
MMU.SPRAM[i] = nes.Read((ushort)(addr + i));
}
}
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internal void Reset()
{
bExtLatch = false;
bChrLatch = false;
bExtNameTable = false;
bExtMono = false;
MMU.PPUREG[0] = MMU.PPUREG[1] = 0;
MMU.PPU56Toggle = 0;
MMU.PPU7_Temp = 0xFF; // VS Excitebike偱偍偐偟偔側傞($2006傪撉傒偵峴偔僶僌偑偁傞)
// PPU7_Temp = 0;
MMU.loopy_v = MMU.loopy_t = 0;
MMU.loopy_x = loopy_y = 0;
loopy_shift = 0;
if (lpScreen != null)
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MemoryUtility.memset(lpScreen, 0x3F, SCREEN_WIDTH * SCREEN_HEIGHT);
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if (lpColormode != null)
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MemoryUtility.memset(lpColormode, 0, SCREEN_HEIGHT);
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}
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internal void FrameStart()
{
if ((MMU.PPUREG[1] & (PPU_SPDISP_BIT | PPU_BGDISP_BIT)) != 0)
{
MMU.loopy_v = MMU.loopy_t;
loopy_shift = MMU.loopy_x;
loopy_y = (ushort)((MMU.loopy_v & 0x7000) >> 12);
}
if (lpScreen != null)
{
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MemoryUtility.memset(lpScreen, 0x3F, SCREEN_WIDTH);
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}
if (lpColormode != null)
{
lpColormode[0] = 0;
}
}
internal void ScanlineNext()
{
if ((MMU.PPUREG[1] & (PPU_BGDISP_BIT | PPU_SPDISP_BIT)) != 0)
{
if ((MMU.loopy_v & 0x7000) == 0x7000)
{
MMU.loopy_v &= 0x8FFF;
if ((MMU.loopy_v & 0x03E0) == 0x03A0)
{
MMU.loopy_v ^= 0x0800;
MMU.loopy_v &= 0xFC1F;
}
else
{
if ((MMU.loopy_v & 0x03E0) == 0x03E0)
{
MMU.loopy_v &= 0xFC1F;
}
else
{
MMU.loopy_v += 0x0020;
}
}
}
else
{
MMU.loopy_v += 0x1000;
}
loopy_y = (ushort)((MMU.loopy_v & 0x7000) >> 12);
}
}
internal void ScanlineStart()
{
if ((MMU.PPUREG[1] & (PPU_BGDISP_BIT | PPU_SPDISP_BIT)) != 0)
{
MMU.loopy_v = (ushort)((MMU.loopy_v & 0xFBE0) | (MMU.loopy_t & 0x041F));
loopy_shift = MMU.loopy_x;
loopy_y = (ushort)((MMU.loopy_v & 0x7000) >> 12);
nes.mapper.PPU_Latch((ushort)(0x2000 + (MMU.loopy_v & 0x0FFF)));
}
}
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private byte[] BGwrite = new byte[33 + 1];
private byte[] BGmono = new byte[33 + 1];
private byte[] SPwrite = new byte[33 + 1];
internal void Scanline(int scanline, bool bMax, bool bLeftClip)
{
int pScn = 0;
int pBGw = 0;
byte chr_h = 0, chr_l = 0, attr = 0;
MemoryUtility.ZEROMEMORY(BGwrite, BGwrite.Length);
MemoryUtility.ZEROMEMORY(BGmono, BGmono.Length);
// Linecolor mode
lpColormode[scanline] = (byte)(((MMU.PPUREG[1] & PPU_BGCOLOR_BIT) >> 5) | ((MMU.PPUREG[1] & PPU_COLORMODE_BIT) << 7));
// Render BG
if ((MMU.PPUREG[1] & PPU_BGDISP_BIT) == 0)
{
MemoryUtility.memset(lpScreen, lpScanline, MMU.BGPAL[0], SCREEN_WIDTH);
if (nes.GetRenderMethod() == EnumRenderMethod.TILE_RENDER)
{
nes.EmulationCPU(NES.FETCH_CYCLES * 4 * 32);
}
}
else
{
if (nes.GetRenderMethod() != EnumRenderMethod.TILE_RENDER)
{
if (!bExtLatch)
{
// Without Extension Latch
pScn = lpScanline + (8 - loopy_shift);
pBGw = 0;
int tileofs = (MMU.PPUREG[0] & PPU_BGTBL_BIT) << 8;
int ntbladr = 0x2000 + (MMU.loopy_v & 0x0FFF);
int attradr = 0x23C0 + (MMU.loopy_v & 0x0C00) + ((MMU.loopy_v & 0x0380) >> 4);
int ntbl_x = ntbladr & 0x001F;
int attrsft = (ntbladr & 0x0040) >> 4;
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var pNTBL = MMU.PPU_MEM_BANK[ntbladr >> 10];
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int tileadr;
int cache_tile = unchecked((int)(0xFFFF0000));
byte cache_attr = 0xFF;
chr_h = chr_l = attr = 0;
attradr &= 0x3FF;
for (int i = 0; i < 33; i++)
{
tileadr = tileofs + pNTBL[ntbladr & 0x03FF] * 0x10 + loopy_y;
attr = (byte)(((pNTBL[attradr + (ntbl_x >> 2)] >> ((ntbl_x & 2) + attrsft)) & 3) << 2);
if (cache_tile == tileadr && cache_attr == attr)
{
lpScreen[pScn + 0] = lpScreen[pScn - 8];
lpScreen[pScn + 0 + 1] = lpScreen[pScn - 8 + 1];
lpScreen[pScn + 0 + 2] = lpScreen[pScn - 8 + 2];
lpScreen[pScn + 0 + 3] = lpScreen[pScn - 8 + 3];
lpScreen[pScn + 4] = lpScreen[pScn - 4];
lpScreen[pScn + 4 + 1] = lpScreen[pScn - 4 + 1];
lpScreen[pScn + 4 + 2] = lpScreen[pScn - 4 + 2];
lpScreen[pScn + 4 + 3] = lpScreen[pScn - 4 + 3];
BGwrite[pBGw + 0] = BGwrite[pBGw - 1];
}
else
{
cache_tile = tileadr;
cache_attr = attr;
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chr_l = MMU.PPU_MEM_BANK[tileadr >> 10][tileadr & 0x03FF];
chr_h = MMU.PPU_MEM_BANK[tileadr >> 10][(tileadr & 0x03FF) + 8];
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BGwrite[pBGw] = (byte)(chr_h | chr_l);
int pBGPAL = attr;
{
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
lpScreen[pScn + 0] = MMU.BGPAL[pBGPAL + (c1 >> 6)];
lpScreen[pScn + 4] = MMU.BGPAL[pBGPAL + ((c1 >> 2) & 3)];
lpScreen[pScn + 1] = MMU.BGPAL[pBGPAL + ((c1 >> 6))];
lpScreen[pScn + 5] = MMU.BGPAL[pBGPAL + ((c2 >> 2) & 3)];
lpScreen[pScn + 2] = MMU.BGPAL[pBGPAL + ((c1 >> 4) & 3)];
lpScreen[pScn + 6] = MMU.BGPAL[pBGPAL + (c1 & 3)];
lpScreen[pScn + 3] = MMU.BGPAL[pBGPAL + ((c2 >> 4) & 3)];
lpScreen[pScn + 7] = MMU.BGPAL[pBGPAL + (c2 & 3)];
}
}
pScn += 8;
pBGw++;
// Character latch(For MMC2/MMC4)
if (bChrLatch)
{
nes.mapper.PPU_ChrLatch((ushort)(tileadr));
}
if (++ntbl_x == 32)
{
ntbl_x = 0;
ntbladr ^= 0x41F;
attradr = 0x03C0 + ((ntbladr & 0x0380) >> 4);
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pNTBL = MMU.PPU_MEM_BANK[ntbladr >> 10];
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}
else
{
ntbladr++;
}
}
}
else
{
// With Extension Latch(For MMC5)
pScn = lpScanline + (8 - loopy_shift);
pBGw = 0;
int ntbladr = 0x2000 + (MMU.loopy_v & 0x0FFF);
int ntbl_x = ntbladr & 0x1F;
int cache_tile = unchecked((int)(0xFFFF0000));
byte cache_attr = 0xFF;
byte exattr = 0;
chr_h = chr_l = attr = 0;
for (int i = 0; i < 33; i++)
{
nes.mapper.PPU_ExtLatchX(i);
nes.mapper.PPU_ExtLatch((ushort)ntbladr, ref chr_l, ref chr_h, ref exattr);
attr = (byte)(exattr & 0x0C);
if (cache_tile != ((chr_h << 8) + chr_l) || cache_attr != attr)
{
cache_tile = ((chr_h << 8) + chr_l);
cache_attr = attr;
BGwrite[pBGw] = (byte)(chr_h | chr_l);
int pBGPAL = attr;
{
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
lpScreen[pScn + 0] = MMU.BGPAL[pBGPAL + (c1 >> 6)];
lpScreen[pScn + 4] = MMU.BGPAL[pBGPAL + ((c1 >> 2) & 3)];
lpScreen[pScn + 1] = MMU.BGPAL[pBGPAL + (c2 >> 6)];
lpScreen[pScn + 5] = MMU.BGPAL[pBGPAL + ((c2 >> 2) & 3)];
lpScreen[pScn + 2] = MMU.BGPAL[pBGPAL + ((c1 >> 4) & 3)];
lpScreen[pScn + 6] = MMU.BGPAL[pBGPAL + (c1 & 3)];
lpScreen[pScn + 3] = MMU.BGPAL[pBGPAL + ((c2 >> 4) & 3)];
lpScreen[pScn + 7] = MMU.BGPAL[pBGPAL + (c2 & 3)];
}
}
else
{
lpScreen[pScn + 0] = lpScreen[pScn - 8];
lpScreen[pScn + 0 + 1] = lpScreen[pScn - 8 + 1];
lpScreen[pScn + 0 + 2] = lpScreen[pScn - 8 + 2];
lpScreen[pScn + 0 + 3] = lpScreen[pScn - 8 + 3];
lpScreen[pScn + 4] = lpScreen[pScn - 4];
lpScreen[pScn + 4 + 1] = lpScreen[pScn - 4 + 1];
lpScreen[pScn + 4 + 2] = lpScreen[pScn - 4 + 2];
lpScreen[pScn + 4 + 3] = lpScreen[pScn - 4 + 3];
BGwrite[pBGw + 0] = BGwrite[pBGw - 1];
}
pScn += 8;
pBGw++;
if (++ntbl_x == 32)
{
ntbl_x = 0;
ntbladr ^= 0x41F;
}
else
{
ntbladr++;
}
}
}
}
else
{
if (!bExtLatch)
{
// Without Extension Latch
if (!bExtNameTable)
{
pScn = lpScanline + (8 - loopy_shift);
pBGw = 0;
int ntbladr = 0x2000 + (MMU.loopy_v & 0x0FFF);
int attradr = 0x03C0 + ((MMU.loopy_v & 0x0380) >> 4);
int ntbl_x = ntbladr & 0x001F;
int attrsft = (ntbladr & 0x0040) >> 4;
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var pNTBL = MMU.PPU_MEM_BANK[ntbladr >> 10];
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int tileadr = 0;
int cache_tile = unchecked((int)(0xFFFF0000));
byte cache_attr = 0xFF;
chr_h = chr_l = attr = 0;
for (int i = 0; i < 33; i++)
{
tileadr = ((MMU.PPUREG[0] & PPU_BGTBL_BIT) << 8) + pNTBL[ntbladr & 0x03FF] * 0x10 + loopy_y;
if (i != 0)
{
nes.EmulationCPU(NES.FETCH_CYCLES * 4);
}
attr = (byte)(((pNTBL[attradr + (ntbl_x >> 2)] >> ((ntbl_x & 2) + attrsft)) & 3) << 2);
if (cache_tile != tileadr || cache_attr != attr)
{
cache_tile = tileadr;
cache_attr = attr;
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chr_l = MMU.PPU_MEM_BANK[tileadr >> 10][tileadr & 0x03FF];
chr_h = MMU.PPU_MEM_BANK[tileadr >> 10][(tileadr & 0x03FF) + 8];
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lpScreen[pBGw] = (byte)(chr_l | chr_h);
int pBGPAL = attr;
{
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
lpScreen[pScn + 0] = MMU.BGPAL[pBGPAL + (c1 >> 6)];
lpScreen[pScn + 4] = MMU.BGPAL[pBGPAL + ((c1 >> 2) & 3)];
lpScreen[pScn + 1] = MMU.BGPAL[pBGPAL + ((c2 >> 6))];
lpScreen[pScn + 5] = MMU.BGPAL[pBGPAL + ((c2 >> 2) & 3)];
lpScreen[pScn + 2] = MMU.BGPAL[pBGPAL + ((c1 >> 4) & 3)];
lpScreen[pScn + 6] = MMU.BGPAL[pBGPAL + (c1 & 3)];
lpScreen[pScn + 3] = MMU.BGPAL[pBGPAL + ((c2 >> 4) & 3)];
lpScreen[pScn + 7] = MMU.BGPAL[pBGPAL + (c2 & 3)];
}
}
else
{
lpScreen[pScn + 0] = lpScreen[pScn - 8];
lpScreen[pScn + 0 + 1] = lpScreen[pScn - 8 + 1];
lpScreen[pScn + 0 + 2] = lpScreen[pScn - 8 + 2];
lpScreen[pScn + 0 + 3] = lpScreen[pScn - 8 + 3];
lpScreen[pScn + 4] = lpScreen[pScn - 4];
lpScreen[pScn + 4 + 1] = lpScreen[pScn - 4 + 1];
lpScreen[pScn + 4 + 2] = lpScreen[pScn - 4 + 2];
lpScreen[pScn + 4 + 3] = lpScreen[pScn - 4 + 3];
BGwrite[pBGw + 0] = BGwrite[pBGw - 1];
}
pScn += 8;
pBGw++;
// Character latch(For MMC2/MMC4)
if (bChrLatch)
{
nes.mapper.PPU_ChrLatch((ushort)(tileadr));
}
if (++ntbl_x == 32)
{
ntbl_x = 0;
ntbladr ^= 0x41F;
attradr = 0x03C0 + ((ntbladr & 0x0380) >> 4);
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pNTBL = MMU.PPU_MEM_BANK[ntbladr >> 10];
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}
else
{
ntbladr++;
}
}
}
else
{
pScn = lpScanline + (8 - loopy_shift);
pBGw = 0;
int ntbladr;
int tileadr;
int cache_tile = unchecked((int)(0xFFFF0000));
byte cache_attr = 0xFF;
chr_h = chr_l = attr = 0;
ushort loopy_v_tmp = MMU.loopy_v;
for (int i = 0; i < 33; i++)
{
if (i != 0)
{
nes.EmulationCPU(NES.FETCH_CYCLES * 4);
}
ntbladr = 0x2000 + (MMU.loopy_v & 0x0FFF);
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tileadr = ((MMU.PPUREG[0] & PPU_BGTBL_BIT) << 8) + MMU.PPU_MEM_BANK[ntbladr >> 10][ntbladr & 0x03FF] * 0x10 + ((MMU.loopy_v & 0x7000) >> 12);
attr = (byte)(((MMU.PPU_MEM_BANK[ntbladr >> 10][0x03C0 + ((ntbladr & 0x0380) >> 4) + ((ntbladr & 0x001C) >> 2)] >> (((ntbladr & 0x40) >> 4) + (ntbladr & 0x02))) & 3) << 2);
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if (cache_tile != tileadr || cache_attr != attr)
{
cache_tile = tileadr;
cache_attr = attr;
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chr_l = MMU.PPU_MEM_BANK[tileadr >> 10][tileadr & 0x03FF];
chr_h = MMU.PPU_MEM_BANK[tileadr >> 10][(tileadr & 0x03FF) + 8];
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BGwrite[pBGw] = (byte)(chr_l | chr_h);
int pBGPAL = attr;
{
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
lpScreen[pScn + 0] = MMU.BGPAL[pBGPAL + (c1 >> 6)];
lpScreen[pScn + 4] = MMU.BGPAL[pBGPAL + ((c1 >> 2) & 3)];
lpScreen[pScn + 1] = MMU.BGPAL[pBGPAL + (c2 >> 6)];
lpScreen[pScn + 5] = MMU.BGPAL[pBGPAL + ((c2 >> 2) & 3)];
lpScreen[pScn + 2] = MMU.BGPAL[pBGPAL + ((c1 >> 4) & 3)];
lpScreen[pScn + 6] = MMU.BGPAL[pBGPAL + (c1 & 3)];
lpScreen[pScn + 3] = MMU.BGPAL[pBGPAL + ((c2 >> 4) & 3)];
lpScreen[pScn + 7] = MMU.BGPAL[pBGPAL + (c2 & 3)];
}
}
else
{
lpScreen[pScn + 0] = lpScreen[pScn - 8];
lpScreen[pScn + 0 + 1] = lpScreen[pScn - 8 + 1];
lpScreen[pScn + 0 + 2] = lpScreen[pScn - 8 + 2];
lpScreen[pScn + 0 + 3] = lpScreen[pScn - 8 + 3];
lpScreen[pScn + 4] = lpScreen[pScn - 4];
lpScreen[pScn + 4 + 1] = lpScreen[pScn - 4 + 1];
lpScreen[pScn + 4 + 2] = lpScreen[pScn - 4 + 2];
lpScreen[pScn + 4 + 3] = lpScreen[pScn - 4 + 3];
BGwrite[pBGw + 0] = BGwrite[pBGw - 1];
}
pScn += 8;
pBGw++;
// Character latch(For MMC2/MMC4)
if (bChrLatch)
{
nes.mapper.PPU_ChrLatch((ushort)tileadr);
}
if ((MMU.loopy_v & 0x1F) == 0x1F)
{
MMU.loopy_v ^= 0x041F;
}
else
{
MMU.loopy_v++;
}
}
MMU.loopy_v = loopy_v_tmp;
}
}
else
{
// With Extension Latch(For MMC5)
pScn = lpScanline + (8 - loopy_shift);
pBGw = 0;
int ntbladr = 0x2000 + (MMU.loopy_v & 0x0FFF);
int ntbl_x = ntbladr & 0x1F;
int cache_tile = unchecked((int)0xFFFF0000);
byte cache_attr = 0xFF;
byte exattr = 0;
chr_h = chr_l = attr = 0;
for (int i = 0; i < 33; i++)
{
if (i != 0)
{
nes.EmulationCPU(NES.FETCH_CYCLES * 4);
}
nes.mapper.PPU_ExtLatchX(i);
nes.mapper.PPU_ExtLatch((ushort)ntbladr, ref chr_l, ref chr_h, ref exattr);
attr = (byte)(exattr & 0x0C);
if (cache_tile != ((chr_h << 8) + chr_l) || cache_attr != attr)
{
cache_tile = ((chr_h << 8) + chr_l);
cache_attr = attr;
BGwrite[pBGw] = (byte)(chr_l | chr_h);
int pBGPAL = attr;
{
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
lpScreen[pScn + 0] = MMU.BGPAL[pBGPAL + ((c1 >> 6))];
lpScreen[pScn + 4] = MMU.BGPAL[pBGPAL + ((c1 >> 2) & 3)];
lpScreen[pScn + 1] = MMU.BGPAL[pBGPAL + ((c2 >> 6))];
lpScreen[pScn + 5] = MMU.BGPAL[pBGPAL + ((c2 >> 2) & 3)];
lpScreen[pScn + 2] = MMU.BGPAL[pBGPAL + ((c1 >> 4) & 3)];
lpScreen[pScn + 6] = MMU.BGPAL[pBGPAL + (c1 & 3)];
lpScreen[pScn + 3] = MMU.BGPAL[pBGPAL + ((c2 >> 4) & 3)];
lpScreen[pScn + 7] = MMU.BGPAL[pBGPAL + (c2 & 3)];
}
}
else
{
lpScreen[pScn + 0] = lpScreen[pScn - 8];
lpScreen[pScn + 0 + 1] = lpScreen[pScn - 8 + 1];
lpScreen[pScn + 0 + 2] = lpScreen[pScn - 8 + 2];
lpScreen[pScn + 0 + 3] = lpScreen[pScn - 8 + 3];
lpScreen[pScn + 4] = lpScreen[pScn - 4];
lpScreen[pScn + 4 + 1] = lpScreen[pScn - 4 + 1];
lpScreen[pScn + 4 + 2] = lpScreen[pScn - 4 + 2];
lpScreen[pScn + 4 + 3] = lpScreen[pScn - 4 + 3];
BGwrite[pBGw + 0] = BGwrite[pBGw - 1];
}
pScn += 8;
pBGw++;
if (++ntbl_x == 32)
{
ntbl_x = 0;
ntbladr ^= 0x41F;
}
else
{
ntbladr++;
}
}
}
}
if ((MMU.PPUREG[1] & PPU_BGCLIP_BIT) == 0 && bLeftClip)
{
pScn = lpScanline + 8;
for (int i = 0; i < 8; i++)
{
lpScreen[i] = MMU.BGPAL[0];
}
}
}
// Render sprites
var temp = ~PPU_SPMAX_FLAG;
MMU.PPUREG[2] = (byte)(MMU.PPUREG[2] & temp);
// 昞帵婜娫奜偱偁傟偽僉儍儞僙儖
if (scanline > 239)
return;
if ((MMU.PPUREG[1] & PPU_SPDISP_BIT) == 0)
{
return;
}
int spmax = 0;
int spraddr = 0, sp_y = 0, sp_h = 0;
chr_h = chr_l = 0;
pBGw = 0;
int pSPw = 0;
int pBit2Rev = 0;
MemoryUtility.ZEROMEMORY(SPwrite, SPwrite.Length);
spmax = 0;
Sprite sp = new Sprite(MMU.SPRAM, 0);
sp_h = (MMU.PPUREG[0] & PPU_SP16_BIT) != 0 ? 15 : 7;
// Left clip
if (bLeftClip && ((MMU.PPUREG[1] & PPU_SPCLIP_BIT) == 0))
{
SPwrite[0] = 0xFF;
}
for (int i = 0; i < 64; i++, sp.AddOffset(1))
{
sp_y = scanline - (sp.y + 1);
// 僗僉儍儞儔僀儞撪偵SPRITE偑懚嵼偡傞偐傪僠僃僢僋
if (sp_y != (sp_y & sp_h))
continue;
if ((MMU.PPUREG[0] & PPU_SP16_BIT) == 0)
{
// 8x8 Sprite
spraddr = ((MMU.PPUREG[0] & PPU_SPTBL_BIT) << 9) + (sp.tile << 4);
if ((sp.attr & SP_VMIRROR_BIT) == 0)
spraddr += sp_y;
else
spraddr += 7 - sp_y;
}
else
{
// 8x16 Sprite
spraddr = ((sp.tile & 1) << 12) + ((sp.tile & 0xFE) << 4);
if ((sp.attr & SP_VMIRROR_BIT) == 0)
spraddr += ((sp_y & 8) << 1) + (sp_y & 7);
else
spraddr += ((~sp_y & 8) << 1) + (7 - (sp_y & 7));
}
// Character pattern
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chr_l = MMU.PPU_MEM_BANK[spraddr >> 10][spraddr & 0x3FF];
chr_h = MMU.PPU_MEM_BANK[spraddr >> 10][(spraddr & 0x3FF) + 8];
迭代中
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// Character latch(For MMC2/MMC4)
if (bChrLatch)
{
nes.mapper.PPU_ChrLatch((ushort)spraddr);
}
// pattern mask
if ((sp.attr & SP_HMIRROR_BIT) != 0)
{
chr_l = Bit2Rev[pBit2Rev + chr_l];
chr_h = Bit2Rev[pBit2Rev + chr_h];
}
byte SPpat = (byte)(chr_l | chr_h);
// Sprite hitcheck
if (i == 0 && (MMU.PPUREG[2] & PPU_SPHIT_FLAG) == 0)
{
int BGpos = ((sp.x & 0xF8) + ((loopy_shift + (sp.x & 7)) & 8)) >> 3;
int BGsft = 8 - ((loopy_shift + sp.x) & 7);
var temp1 = BGwrite[pBGw + BGpos + 0] << 8;
var temp2 = BGwrite[pBGw + BGpos + 1];
byte BGmsk = (byte)((temp1 | temp2) >> BGsft);
if ((SPpat & BGmsk) != 0)
{
MMU.PPUREG[2] |= PPU_SPHIT_FLAG;
}
}
// Sprite mask
int SPpos = sp.x / 8;
int SPsft = 8 - (sp.x & 7);
byte SPmsk = (byte)((SPwrite[pSPw + SPpos + 0] << 8 | SPwrite[pSPw + SPpos + 1]) >> SPsft);
ushort SPwrt = (ushort)(SPpat << SPsft);
SPwrite[pSPw + SPpos + 0] = (byte)(SPwrite[pSPw + SPpos + 0] | SPwrt >> 8);
SPwrite[pSPw + SPpos + 1] = (byte)(SPwrite[pSPw + SPpos + 1] | SPwrt & 0xFF);
SPpat = (byte)(SPpat & ~SPmsk);
if ((sp.attr & SP_PRIORITY_BIT) != 0)
{
// BG > SP priority
int BGpos = ((sp.x & 0xF8) + ((loopy_shift + (sp.x & 7)) & 8)) >> 3;
int BGsft = 8 - ((loopy_shift + sp.x) & 7);
byte BGmsk = (byte)(((BGwrite[pBGw + BGpos + 0] << 8) | BGwrite[pBGw + BGpos + 1]) >> BGsft);
SPpat = (byte)(SPpat & ~BGmsk);
}
// Attribute
int pSPPAL = (sp.attr & SP_COLOR_BIT) << 2;
// Ptr
pScn = lpScanline + sp.x + 8;
if (!bExtMono)
{
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
if ((SPpat & 0x80) != 0) lpScreen[pScn + 0] = MMU.SPPAL[pSPPAL + (c1 >> 6)];
if ((SPpat & 0x08) != 0) lpScreen[pScn + 4] = MMU.SPPAL[pSPPAL + ((c1 >> 2) & 3)];
if ((SPpat & 0x40) != 0) lpScreen[pScn + 1] = MMU.SPPAL[pSPPAL + ((c2 >> 6))];
if ((SPpat & 0x04) != 0) lpScreen[pScn + 5] = MMU.SPPAL[pSPPAL + ((c2 >> 2) & 3)];
if ((SPpat & 0x20) != 0) lpScreen[pScn + 2] = MMU.SPPAL[pSPPAL + ((c1 >> 4) & 3)];
if ((SPpat & 0x02) != 0) lpScreen[pScn + 6] = MMU.SPPAL[pSPPAL + (c1 & 3)];
if ((SPpat & 0x10) != 0) lpScreen[pScn + 3] = MMU.SPPAL[pSPPAL + ((c2 >> 4) & 3)];
if ((SPpat & 0x01) != 0) lpScreen[pScn + 7] = MMU.SPPAL[pSPPAL + (c2 & 3)];
}
else
{
// Monocrome effect (for Final Fantasy)
byte mono = BGmono[((sp.x & 0xF8) + ((loopy_shift + (sp.x & 7)) & 8)) >> 3];
int c1 = ((chr_l >> 1) & 0x55) | (chr_h & 0xAA);
int c2 = (chr_l & 0x55) | ((chr_h << 1) & 0xAA);
if ((SPpat & 0x80) != 0) lpScreen[pScn + 0] = (byte)(MMU.SPPAL[pSPPAL + (c1 >> 6)] | mono);
if ((SPpat & 0x08) != 0) lpScreen[pScn + 4] = (byte)(MMU.SPPAL[pSPPAL + ((c1 >> 2) & 3)] | mono);
if ((SPpat & 0x40) != 0) lpScreen[pScn + 1] = (byte)(MMU.SPPAL[pSPPAL + (c2 >> 6)] | mono);
if ((SPpat & 0x04) != 0) lpScreen[pScn + 5] = (byte)(MMU.SPPAL[pSPPAL + ((c2 >> 2) & 3)] | mono);
if ((SPpat & 0x20) != 0) lpScreen[pScn + 2] = (byte)(MMU.SPPAL[pSPPAL + ((c1 >> 4) & 3)] | mono);
if ((SPpat & 0x02) != 0) lpScreen[pScn + 6] = (byte)(MMU.SPPAL[pSPPAL + (c1 & 3)] | mono);
if ((SPpat & 0x10) != 0) lpScreen[pScn + 3] = (byte)(MMU.SPPAL[pSPPAL + ((c2 >> 4) & 3)] | mono);
if ((SPpat & 0x01) != 0) lpScreen[pScn + 7] = (byte)(MMU.SPPAL[pSPPAL + (c2 & 3)] | mono);
}
if (++spmax > 8 - 1)
{
if (!bMax)
break;
}
}
if (spmax > 8 - 1)
{
MMU.PPUREG[2] |= PPU_SPMAX_FLAG;
}
}
internal bool IsSprite0(int scanline)
{
// 僗僾儔僀僩orBG旕昞帵偼僉儍儞僙儖(僸僢僩偟側偄)
if ((MMU.PPUREG[1] & (PPU_SPDISP_BIT | PPU_BGDISP_BIT)) != (PPU_SPDISP_BIT | PPU_BGDISP_BIT))
return false;
// 婛偵僸僢僩偟偰偄偨傜僉儍儞僙儖
if ((MMU.PPUREG[2] & PPU_SPHIT_FLAG) != 0)
return false;
if ((MMU.PPUREG[0] & PPU_SP16_BIT) == 0)
{
// 8x8
if ((scanline < MMU.SPRAM[0] + 1) || (scanline > (MMU.SPRAM[0] + 7 + 1)))
return false;
}
else
{
// 8x16
if ((scanline < MMU.SPRAM[0] + 1) || (scanline > (MMU.SPRAM[0] + 15 + 1)))
return false;
}
return true;
}
internal void DummyScanline(int scanline)
{
int i;
int spmax;
int sp_h;
MMU.PPUREG[2] = (byte)(MMU.PPUREG[2] & ~PPU_SPMAX_FLAG);
// 僗僾儔僀僩旕昞帵偼僉儍儞僙儖
if ((MMU.PPUREG[1] & PPU_SPDISP_BIT) == 0)
return;
// 昞帵婜娫奜偱偁傟偽僉儍儞僙儖
if (scanline < 0 || scanline > 239)
return;
Sprite sp = new Sprite(MMU.SPRAM, 0);
sp_h = (MMU.PPUREG[0] & PPU_SP16_BIT) != 0 ? 15 : 7;
spmax = 0;
// Sprite Max check
for (i = 0; i < 64; i++, sp.AddOffset(1))
{
// 僗僉儍儞儔僀儞撪偵SPRITE偑懚嵼偡傞偐傪僠僃僢僋
if ((scanline < sp.y + 1) || (scanline > (sp.y + sp_h + 1)))
{
continue;
}
if (++spmax > 8 - 1)
{
MMU.PPUREG[2] |= PPU_SPMAX_FLAG;
break;
}
}
}
internal void VBlankEnd()
{
MMU.PPUREG[2] = (byte)(MMU.PPUREG[2] & ~PPU_VBLANK_FLAG);
// VBlank扙弌帪偵僋儕傾偝傟傞
// 僄僉僒僀僩僶僀僋偱廳梫
MMU.PPUREG[2] = (byte)(MMU.PPUREG[2] & ~PPU_SPHIT_FLAG);
}
internal void VBlankStart()
{
MMU.PPUREG[2] |= PPU_VBLANK_FLAG;
}
public byte[] GetScreenPtr()
翻译中
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{
迭代中
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return lpScreen;
}
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public byte[] GetLineColorMode()
{
return lpColormode;
}
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internal void SetScreenPtr(byte[] screenBuffer, byte[] colormode)
{
lpScreen = screenBuffer;
lpColormode = colormode;
}
123
2024-07-30 18:53:36 +08:00
迭代中
2024-07-30 11:57:09 +08:00
internal bool IsDispON()
{
return (MMU.PPUREG[1] & (PPU_BGDISP_BIT | PPU_SPDISP_BIT)) != 0;
Mapper补全
2024-08-05 11:52:43 +08:00
}
internal void SetExtLatchMode(bool bMode)
{
bExtLatch = bMode;
}
internal ushort GetPPUADDR()
{
return MMU.loopy_v;
}
internal ushort GetTILEY()
{
return loopy_y;
}
internal void SetChrLatchMode(bool bMode)
{
bChrLatch = bMode;
ROMDB提交,Mapper修復
2024-08-06 13:49:24 +08:00
}
internal void SetExtNameTableMode(bool bMode)
{
bExtNameTable = bMode;
}
internal void SetExtMonoMode(bool bMode)
{
bExtMono = bMode;
迭代中
2024-07-30 11:57:09 +08:00
}
public struct Sprite
{
public byte y
{
get => raw[offset + 0];
set => raw[offset + 0] = value;
}
public byte tile
{
get => raw[offset + 1];
set => raw[offset + 1] = value;
}
public byte attr
{
get => raw[offset + 2];
set => raw[offset + 2] = value;
}
public byte x
{
get => raw[offset + 3];
set => raw[offset + 3] = value;
}
private byte[] raw;
private int offset;
public Sprite(byte[] raw, int offset)
{
this.raw = raw;
this.offset = offset * 4;
}
public void AddOffset(int offset)
{
this.offset += offset * 4;
}
翻译中
2024-07-25 11:03:58 +08:00
}
VirtuaNesCore翻译中
2024-07-23 18:31:59 +08:00
}
}
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