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BizHawk/wonderswan/gfx.cpp

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/* Cygne
*
* Copyright notice for this file:
* Copyright (C) 2002 Dox dox@space.pl
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "system.h"
#include <cstring>
namespace MDFN_IEN_WSWAN
{
GFX::GFX()
:LayerEnabled(7) // 1 = bg, 2 = fg, 4 = sprite
{
//SetPixelFormat();
}
void GFX::PaletteRAMWrite(uint32 ws_offset, uint8 data)
{
ws_offset=(ws_offset&0xfffe)-0xfe00;
wsCols[(ws_offset>>1)>>4][(ws_offset>>1)&15] = sys->memory.wsRAM[ws_offset+0xfe00] | ((sys->memory.wsRAM[ws_offset+0xfe01]&0x0f) << 8);
}
void GFX::Write(uint32 A, uint8 V)
{
if(A >= 0x1C && A <= 0x1F)
{
wsColors[(A - 0x1C) * 2 + 0] = 0xF - (V & 0xf);
wsColors[(A - 0x1C) * 2 + 1] = 0xF - (V >> 4);
}
else if(A >= 0x20 && A <= 0x3F)
{
wsMonoPal[(A - 0x20) >> 1][((A & 0x1) << 1) + 0] = V&7;
wsMonoPal[(A - 0x20) >> 1][((A & 0x1) << 1) | 1] = (V>>4)&7;
}
else switch(A)
{
case 0x00: DispControl = V; break;
case 0x01: BGColor = V; break;
case 0x03: LineCompare = V; break;
case 0x04: SPRBase = V & 0x3F; break;
case 0x05: SpriteStart = V; break;
case 0x06: SpriteCount = V; break;
case 0x07: FGBGLoc = V; break;
case 0x08: FGx0 = V; break;
case 0x09: FGy0 = V; break;
case 0x0A: FGx1 = V; break;
case 0x0B: FGy1 = V; break;
case 0x0C: SPRx0 = V; break;
case 0x0D: SPRy0 = V; break;
case 0x0E: SPRx1 = V; break;
case 0x0F: SPRy1 = V; break;
case 0x10: BGXScroll = V; break;
case 0x11: BGYScroll = V; break;
case 0x12: FGXScroll = V; break;
case 0x13: FGYScroll = V; break;
case 0x14: LCDControl = V; break; // if((!(wsIO[0x14]&1))&&(data&1)) { wsLine=0; }break; /* LCD off ??*/
case 0x15: LCDIcons = V; break;
case 0x60: VideoMode = V;
SetVideo(V>>5, false);
//printf("VideoMode: %02x, %02x\n", V, V >> 5);
break;
case 0xa2: if((V & 0x01) && !(BTimerControl & 0x01))
HBCounter = HBTimerPeriod;
if((V & 0x04) && !(BTimerControl & 0x04))
VBCounter = VBTimerPeriod;
BTimerControl = V;
//printf("%04x:%02x\n", A, V);
break;
case 0xa4: HBTimerPeriod &= 0xFF00; HBTimerPeriod |= (V << 0); /*printf("%04x:%02x, %d\n", A, V, wsLine);*/ break;
case 0xa5: HBTimerPeriod &= 0x00FF; HBTimerPeriod |= (V << 8); HBCounter = HBTimerPeriod; /*printf("%04x:%02x, %d\n", A, V, wsLine);*/ break;
case 0xa6: VBTimerPeriod &= 0xFF00; VBTimerPeriod |= (V << 0); /*printf("%04x:%02x, %d\n", A, V, wsLine);*/ break;
case 0xa7: VBTimerPeriod &= 0x00FF; VBTimerPeriod |= (V << 8); VBCounter = VBTimerPeriod; /*printf("%04x:%02x, %d\n", A, V, wsLine);*/ break;
//default: printf("%04x:%02x\n", A, V); break;
}
}
uint8 GFX::Read(uint32 A)
{
if(A >= 0x1C && A <= 0x1F)
{
uint8 ret = 0;
ret |= 0xF - wsColors[(A - 0x1C) * 2 + 0];
ret |= (0xF - wsColors[(A - 0x1C) * 2 + 1]) << 4;
return(ret);
}
else if(A >= 0x20 && A <= 0x3F)
{
uint8 ret = wsMonoPal[(A - 0x20) >> 1][((A & 0x1) << 1) + 0] | (wsMonoPal[(A - 0x20) >> 1][((A & 0x1) << 1) | 1] << 4);
return(ret);
}
else switch(A)
{
case 0x00: return(DispControl);
case 0x01: return(BGColor);
case 0x02: return(wsLine);
case 0x03: return(LineCompare);
case 0x04: return(SPRBase);
case 0x05: return(SpriteStart);
case 0x06: return(SpriteCount);
case 0x07: return(FGBGLoc);
case 0x08: return(FGx0); break;
case 0x09: return(FGy0); break;
case 0x0A: return(FGx1); break;
case 0x0B: return(FGy1); break;
case 0x0C: return(SPRx0); break;
case 0x0D: return(SPRy0); break;
case 0x0E: return(SPRx1); break;
case 0x0F: return(SPRy1); break;
case 0x10: return(BGXScroll);
case 0x11: return(BGYScroll);
case 0x12: return(FGXScroll);
case 0x13: return(FGYScroll);
case 0x14: return(LCDControl);
case 0x15: return(LCDIcons);
case 0x60: return(VideoMode);
case 0xa0: return(wsc ? 0x87 : 0x86);
case 0xa2: return(BTimerControl);
case 0xa4: return((HBTimerPeriod >> 0) & 0xFF);
case 0xa5: return((HBTimerPeriod >> 8) & 0xFF);
case 0xa6: return((VBTimerPeriod >> 0) & 0xFF);
case 0xa7: return((VBTimerPeriod >> 8) & 0xFF);
case 0xa8: /*printf("%04x\n", A);*/ return((HBCounter >> 0) & 0xFF);
case 0xa9: /*printf("%04x\n", A);*/ return((HBCounter >> 8) & 0xFF);
case 0xaa: /*printf("%04x\n", A);*/ return((VBCounter >> 0) & 0xFF);
case 0xab: /*printf("%04x\n", A);*/ return((VBCounter >> 8) & 0xFF);
default: return(0);
//default: printf("GfxRead: %04x\n", A); return(0);
}
}
bool GFX::ExecuteLine(uint32 *surface, bool skip)
{
bool ret = false; // true if we finish frame here
if(wsLine < 144)
{
if(!skip)
{
if (sys->rotate)
Scanline(surface + 223 * 144 + wsLine);
else
Scanline(surface + wsLine * 224);
}
}
sys->memory.CheckSoundDMA();
// Update sprite data table
if(wsLine == 142)
{
SpriteCountCache = SpriteCount;
if(SpriteCountCache > 0x80)
SpriteCountCache = 0x80;
memcpy(SpriteTable, &sys->memory.wsRAM[(SPRBase << 9) + (SpriteStart << 2)], SpriteCountCache << 2);
}
if(wsLine == 144)
{
ret = true;
sys->interrupt.DoInterrupt(WSINT_VBLANK);
//printf("VBlank: %d\n", wsLine);
}
if(HBCounter && (BTimerControl & 0x01))
{
HBCounter--;
if(!HBCounter)
{
// Loop mode?
if(BTimerControl & 0x02)
HBCounter = HBTimerPeriod;
sys->interrupt.DoInterrupt(WSINT_HBLANK_TIMER);
}
}
// CPU ==========================
sys->cpu.execute(224);
// CPU ==========================
wsLine = (wsLine + 1) % 159;
if(wsLine == LineCompare)
{
sys->interrupt.DoInterrupt(WSINT_LINE_HIT);
//printf("Line hit: %d\n", wsLine);
}
// CPU ==========================
sys->cpu.execute(32);
// CPU ==========================
sys->rtc.Clock(256);
if(!wsLine)
{
if(VBCounter && (BTimerControl & 0x04))
{
VBCounter--;
if(!VBCounter)
{
if(BTimerControl & 0x08) // Loop mode?
VBCounter = VBTimerPeriod;
sys->interrupt.DoInterrupt(WSINT_VBLANK_TIMER);
}
}
wsLine = 0;
}
return ret;
}
void GFX::SetLayerEnableMask(uint32 mask)
{
LayerEnabled = mask;
}
void GFX::SetBWPalette(const uint32 *colors)
{
std::memcpy(ColorMapG, colors, sizeof(ColorMapG));
}
void GFX::SetColorPalette(const uint32 *colors)
{
std::memcpy(ColorMap, colors, sizeof(ColorMap));
}
/*
void GFX::SetPixelFormat()
{
for(int r = 0; r < 16; r++)
{
for(int g = 0; g < 16; g++)
{
for(int b = 0; b < 16; b++)
{
uint32 neo_r, neo_g, neo_b;
neo_r = r * 17;
neo_g = g * 17;
neo_b = b * 17;
ColorMap[(r << 8) | (g << 4) | (b << 0)] = 0xff000000 | neo_r << 16 | neo_g << 8 | neo_b << 0;
}
for(int i = 0; i < 16; i++)
{
uint32 neo_r, neo_g, neo_b;
neo_r = (i) * 17;
neo_g = (i) * 17;
neo_b = (i) * 17;
ColorMapG[i] = 0xff000000 | neo_r << 16 | neo_g << 8 | neo_b << 0;
}
}
}
}*/
void GFX::Scanline(uint32 *target)
{
uint32 start_tile_n,map_a,startindex,adrbuf,b1,b2,j,t,l;
char ys2;
uint8 b_bg[256];
uint8 b_bg_pal[256];
const uint8 *ram = sys->memory.wsRAM;
if(!wsVMode)
memset(b_bg, wsColors[BGColor&0xF]&0xF, 256);
else
{
memset(&b_bg[0], BGColor & 0xF, 256);
memset(&b_bg_pal[0], (BGColor>>4) & 0xF, 256);
}
start_tile_n=(wsLine+BGYScroll)&0xff;/*First line*/
map_a=(((uint32)(FGBGLoc&0xF))<<11)+((start_tile_n&0xfff8)<<3);
startindex = BGXScroll >> 3; /*First tile in row*/
adrbuf = 7-(BGXScroll&7); /*Pixel in tile*/
if((DispControl & 0x01) && (LayerEnabled & 0x01)) /*BG layer*/
{
for(t=0;t<29;t++)
{
b1=ram[map_a+(startindex<<1)];
b2=ram[map_a+(startindex<<1)+1];
uint32 palette=(b2>>1)&15;
b2=(b2<<8)|b1;
GetTile(b2&0x1ff,start_tile_n&7,b2&0x8000,b2&0x4000,b2&0x2000);
if(wsVMode)
{
if(wsVMode & 0x2)
{
for(int x = 0; x < 8; x++)
if(wsTileRow[x])
{
b_bg[adrbuf + x] = wsTileRow[x];
b_bg_pal[adrbuf + x] = palette;
}
}
else
{
for(int x = 0; x < 8; x++)
if(wsTileRow[x] || !(palette & 0x4))
{
b_bg[adrbuf + x] = wsTileRow[x];
b_bg_pal[adrbuf + x] = palette;
}
}
}
else
{
for(int x = 0; x < 8; x++)
if(wsTileRow[x] || !(palette & 4))
{
b_bg[adrbuf + x] = wsColors[wsMonoPal[palette][wsTileRow[x]]];
}
}
adrbuf += 8;
startindex=(startindex + 1)&31;
} // end for(t = 0 ...
} // End BG layer drawing
if((DispControl & 0x02) && (LayerEnabled & 0x02))/*FG layer*/
{
uint8 windowtype = DispControl&0x30;
bool in_window[256 + 8*2];
if(windowtype)
{
memset(in_window, 0, sizeof(in_window));
if(windowtype == 0x20) // Display FG only inside window
{
if((wsLine >= FGy0) && (wsLine < FGy1))
for(j = FGx0; j <= FGx1 && j < 224; j++)
in_window[7 + j] = 1;
}
else if(windowtype == 0x30) // Display FG only outside window
{
for(j = 0; j < 224; j++)
{
if(!(j >= FGx0 && j < FGx1) || !((wsLine >= FGy0) && (wsLine < FGy1)))
in_window[7 + j] = 1;
}
}
else
{
Debug::puts("Bad windowtype??");
}
}
else
memset(in_window, 1, sizeof(in_window));
start_tile_n=(wsLine+FGYScroll)&0xff;
map_a=(((uint32)((FGBGLoc>>4)&0xF))<<11)+((start_tile_n>>3)<<6);
startindex = FGXScroll >> 3;
adrbuf = 7-(FGXScroll&7);
for(t=0; t<29; t++)
{
b1=ram[map_a+(startindex<<1)];
b2=ram[map_a+(startindex<<1)+1];
uint32 palette=(b2>>1)&15;
b2=(b2<<8)|b1;
GetTile(b2&0x1ff,start_tile_n&7,b2&0x8000,b2&0x4000,b2&0x2000);
if(wsVMode)
{
if(wsVMode & 0x2)
for(int x = 0; x < 8; x++)
{
if(wsTileRow[x] && in_window[adrbuf + x])
{
b_bg[adrbuf + x] = wsTileRow[x] | 0x10;
b_bg_pal[adrbuf + x] = palette;
}
}
else
for(int x = 0; x < 8; x++)
{
if((wsTileRow[x] || !(palette & 0x4)) && in_window[adrbuf + x])
{
b_bg[adrbuf + x] = wsTileRow[x] | 0x10;
b_bg_pal[adrbuf + x] = palette;
}
}
}
else
{
for(int x = 0; x < 8; x++)
if((wsTileRow[x] || !(palette & 4)) && in_window[adrbuf + x])
{
b_bg[adrbuf + x] = wsColors[wsMonoPal[palette][wsTileRow[x]]] | 0x10;
}
}
adrbuf += 8;
startindex=(startindex + 1)&31;
} // end for(t = 0 ...
} // end FG drawing
if((DispControl & 0x04) && SpriteCountCache && (LayerEnabled & 0x04))/*Sprites*/
{
int xs,ts,as,ys,ysx,h;
bool in_window[256 + 8*2];
if(DispControl & 0x08)
{
memset(in_window, 0, sizeof(in_window));
if((wsLine >= SPRy0) && (wsLine < SPRy1))
for(j = SPRx0; j < SPRx1 && j < 256; j++)
in_window[7 + j] = 1;
}
else
memset(in_window, 1, sizeof(in_window));
for(h = SpriteCountCache - 1; h >= 0; h--)
{
ts = SpriteTable[h][0];
as = SpriteTable[h][1];
ysx = SpriteTable[h][2];
ys2 = (int8)SpriteTable[h][2];
xs = SpriteTable[h][3];
if(xs >= 249) xs -= 256;
if(ysx > 150)
ys = ys2;
else
ys = ysx;
ys = wsLine - ys;
if(ys >= 0 && ys < 8 && xs < 224)
{
uint32 palette = ((as >> 1) & 0x7);
ts |= (as&1) << 8;
GetTile(ts, ys, as & 0x80, as & 0x40, 0);
if(wsVMode)
{
if(wsVMode & 0x2)
{
for(int x = 0; x < 8; x++)
if(wsTileRow[x])
{
if((as & 0x20) || !(b_bg[xs + x + 7] & 0x10))
{
bool drawthis = 0;
if(!(DispControl & 0x08))
drawthis = TRUE;
else if((as & 0x10) && !in_window[7 + xs + x])
drawthis = TRUE;
else if(!(as & 0x10) && in_window[7 + xs + x])
drawthis = TRUE;
if(drawthis)
{
b_bg[xs + x + 7] = wsTileRow[x] | (b_bg[xs + x + 7] & 0x10);
b_bg_pal[xs + x + 7] = 8 + palette;
}
}
}
}
else
{
for(int x = 0; x < 8; x++)
if(wsTileRow[x] || !(palette & 0x4))
{
if((as & 0x20) || !(b_bg[xs + x + 7] & 0x10))
{
bool drawthis = 0;
if(!(DispControl & 0x08))
drawthis = TRUE;
else if((as & 0x10) && !in_window[7 + xs + x])
drawthis = TRUE;
else if(!(as & 0x10) && in_window[7 + xs + x])
drawthis = TRUE;
if(drawthis)
{
b_bg[xs + x + 7] = wsTileRow[x] | (b_bg[xs + x + 7] & 0x10);
b_bg_pal[xs + x + 7] = 8 + palette;
}
}
}
}
}
else
{
for(int x = 0; x < 8; x++)
if(wsTileRow[x] || !(palette & 4))
{
if((as & 0x20) || !(b_bg[xs + x + 7] & 0x10))
{
bool drawthis = 0;
if(!(DispControl & 0x08))
drawthis = TRUE;
else if((as & 0x10) && !in_window[7 + xs + x])
drawthis = TRUE;
else if(!(as & 0x10) && in_window[7 + xs + x])
drawthis = TRUE;
if(drawthis)
//if((as & 0x10) || in_window[7 + xs + x])
{
b_bg[xs + x + 7] = wsColors[wsMonoPal[8 + palette][wsTileRow[x]]] | (b_bg[xs + x + 7] & 0x10);
}
}
}
}
}
}
} // End sprite drawing
const int hinc = sys->rotate ? -144 : 1;
if(wsVMode)
{
for(l=0;l<224;l++)
{
target[0] = ColorMap[wsCols[b_bg_pal[l+7]][b_bg[(l+7)]&0xf]];
target += hinc;
}
}
else
{
for(l=0;l<224;l++)
{
target[0] = ColorMapG[(b_bg[l+7])&15];
target += hinc;
}
}
}
void GFX::Init(bool color)
{
wsc = color;
}
void GFX::Reset()
{
wsLine = 145; // all frames same length
SetVideo(0, true);
std::memset(SpriteTable, 0, sizeof(SpriteTable));
SpriteCountCache = 0;
DispControl = 0;
BGColor = 0;
LineCompare = 0xBB;
SPRBase = 0;
SpriteStart = 0;
SpriteCount = 0;
FGBGLoc = 0;
FGx0 = 0;
FGy0 = 0;
FGx1 = 0;
FGy1 = 0;
SPRx0 = 0;
SPRy0 = 0;
SPRx1 = 0;
SPRy1 = 0;
BGXScroll = BGYScroll = 0;
FGXScroll = FGYScroll = 0;
LCDControl = 0;
LCDIcons = 0;
BTimerControl = 0;
HBTimerPeriod = 0;
VBTimerPeriod = 0;
HBCounter = 0;
VBCounter = 0;
std::memset(wsCols, 0, sizeof(wsCols));
}
SYNCFUNC(GFX)
{
// TCACHE stuff. we invalidate the cache instead of saving it
if (isReader)
{
std::memset(wsTCacheUpdate, 0, sizeof(wsTCacheUpdate));
std::memset(wsTCacheUpdate2, 0, sizeof(wsTCacheUpdate2));
}
/*
NSS(tiles);
NSS(wsTCache);
NSS(wsTCache2);
NSS(wsTCacheFlipped);
NSS(wsTCacheFlipped2);
NSS(wsTCacheUpdate);
NSS(wsTCacheUpdate2);
NSS(wsTileRow);
*/
NSS(wsVMode);
NSS(wsMonoPal);
NSS(wsColors);
NSS(wsCols);
/* non-sync settings related to output
NSS(ColorMapG); // b&w color output
NSS(ColorMap); // color color output
NSS(LayerEnabled); // layer enable mask
*/
NSS(wsLine);
NSS(SpriteTable);
NSS(SpriteCountCache);
NSS(DispControl);
NSS(BGColor);
NSS(LineCompare);
NSS(SPRBase);
NSS(SpriteStart);
NSS(SpriteCount);
NSS(FGBGLoc);
NSS(FGx0);
NSS(FGy0);
NSS(FGx1);
NSS(FGy1);
NSS(SPRx0);
NSS(SPRy0);
NSS(SPRx1);
NSS(SPRy1);
NSS(BGXScroll);
NSS(BGYScroll);
NSS(FGXScroll);
NSS(FGYScroll);
NSS(LCDControl);
NSS(LCDIcons);
NSS(BTimerControl);
NSS(HBTimerPeriod);
NSS(VBTimerPeriod);
NSS(HBCounter);
NSS(VBCounter);
NSS(VideoMode);
NSS(wsc); // mono / color
}
}
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