mirror of
https://github.com/dborth/vbagx.git
synced 2024-11-29 22:14:17 +01:00
586 lines
15 KiB
C++
586 lines
15 KiB
C++
#include <string.h>
|
|
#include "../common/Types.h"
|
|
#include "../Util.h"
|
|
#include "gbGlobals.h"
|
|
#include "gbSGB.h"
|
|
|
|
u8 gbInvertTab[256] = {
|
|
0x00,0x80,0x40,0xc0,0x20,0xa0,0x60,0xe0,
|
|
0x10,0x90,0x50,0xd0,0x30,0xb0,0x70,0xf0,
|
|
0x08,0x88,0x48,0xc8,0x28,0xa8,0x68,0xe8,
|
|
0x18,0x98,0x58,0xd8,0x38,0xb8,0x78,0xf8,
|
|
0x04,0x84,0x44,0xc4,0x24,0xa4,0x64,0xe4,
|
|
0x14,0x94,0x54,0xd4,0x34,0xb4,0x74,0xf4,
|
|
0x0c,0x8c,0x4c,0xcc,0x2c,0xac,0x6c,0xec,
|
|
0x1c,0x9c,0x5c,0xdc,0x3c,0xbc,0x7c,0xfc,
|
|
0x02,0x82,0x42,0xc2,0x22,0xa2,0x62,0xe2,
|
|
0x12,0x92,0x52,0xd2,0x32,0xb2,0x72,0xf2,
|
|
0x0a,0x8a,0x4a,0xca,0x2a,0xaa,0x6a,0xea,
|
|
0x1a,0x9a,0x5a,0xda,0x3a,0xba,0x7a,0xfa,
|
|
0x06,0x86,0x46,0xc6,0x26,0xa6,0x66,0xe6,
|
|
0x16,0x96,0x56,0xd6,0x36,0xb6,0x76,0xf6,
|
|
0x0e,0x8e,0x4e,0xce,0x2e,0xae,0x6e,0xee,
|
|
0x1e,0x9e,0x5e,0xde,0x3e,0xbe,0x7e,0xfe,
|
|
0x01,0x81,0x41,0xc1,0x21,0xa1,0x61,0xe1,
|
|
0x11,0x91,0x51,0xd1,0x31,0xb1,0x71,0xf1,
|
|
0x09,0x89,0x49,0xc9,0x29,0xa9,0x69,0xe9,
|
|
0x19,0x99,0x59,0xd9,0x39,0xb9,0x79,0xf9,
|
|
0x05,0x85,0x45,0xc5,0x25,0xa5,0x65,0xe5,
|
|
0x15,0x95,0x55,0xd5,0x35,0xb5,0x75,0xf5,
|
|
0x0d,0x8d,0x4d,0xcd,0x2d,0xad,0x6d,0xed,
|
|
0x1d,0x9d,0x5d,0xdd,0x3d,0xbd,0x7d,0xfd,
|
|
0x03,0x83,0x43,0xc3,0x23,0xa3,0x63,0xe3,
|
|
0x13,0x93,0x53,0xd3,0x33,0xb3,0x73,0xf3,
|
|
0x0b,0x8b,0x4b,0xcb,0x2b,0xab,0x6b,0xeb,
|
|
0x1b,0x9b,0x5b,0xdb,0x3b,0xbb,0x7b,0xfb,
|
|
0x07,0x87,0x47,0xc7,0x27,0xa7,0x67,0xe7,
|
|
0x17,0x97,0x57,0xd7,0x37,0xb7,0x77,0xf7,
|
|
0x0f,0x8f,0x4f,0xcf,0x2f,0xaf,0x6f,0xef,
|
|
0x1f,0x9f,0x5f,0xdf,0x3f,0xbf,0x7f,0xff
|
|
};
|
|
|
|
u16 gbLineMix[160];
|
|
u16 gbWindowColor[160];
|
|
extern int inUseRegister_WY;
|
|
extern int layerSettings;
|
|
|
|
void gbRenderLine()
|
|
{
|
|
memset(gbLineMix, 0, sizeof(gbLineMix));
|
|
u8 * bank0;
|
|
u8 * bank1;
|
|
if(gbCgbMode) {
|
|
bank0 = &gbVram[0x0000];
|
|
bank1 = &gbVram[0x2000];
|
|
} else {
|
|
bank0 = &gbMemory[0x8000];
|
|
bank1 = NULL;
|
|
}
|
|
|
|
int tile_map = 0x1800;
|
|
if((register_LCDC & 8) != 0)
|
|
tile_map = 0x1c00;
|
|
|
|
int tile_pattern = 0x0800;
|
|
|
|
if((register_LCDC & 16) != 0)
|
|
tile_pattern = 0x0000;
|
|
|
|
int x = 0;
|
|
int y = register_LY;
|
|
|
|
if(y >= 144)
|
|
return;
|
|
|
|
int SpritesTicks = gbSpritesTicks[x]*(gbSpeed ? 2 : 4);
|
|
int sx = gbSCXLine[(gbSpeed ? 0 : 4)+SpritesTicks];
|
|
int sy = gbSCYLine[(gbSpeed ? 11 : 5)+SpritesTicks];
|
|
|
|
sy+=y;
|
|
|
|
sy &= 255;
|
|
|
|
int tx = sx >> 3;
|
|
int ty = sy >> 3;
|
|
|
|
int bx = 1 << (7 - (sx & 7));
|
|
int by = sy & 7;
|
|
|
|
int tile_map_line_y = tile_map + ty * 32;
|
|
|
|
int tile_map_address = tile_map_line_y + tx;
|
|
|
|
u8 attrs = 0;
|
|
if(bank1 != NULL)
|
|
attrs = bank1[tile_map_address];
|
|
|
|
u8 tile = bank0[tile_map_address];
|
|
|
|
tile_map_address++;
|
|
|
|
if(!(register_LCDC & 0x10))
|
|
tile ^= 0x80;
|
|
|
|
int tile_pattern_address = tile_pattern + tile * 16 + by*2;
|
|
|
|
if(register_LCDC & 0x80) {
|
|
if((register_LCDC & 0x01 || gbCgbMode) && (layerSettings & 0x0100)) {
|
|
while(x < 160) {
|
|
|
|
|
|
|
|
u8 tile_a = 0;
|
|
u8 tile_b = 0;
|
|
|
|
if(attrs & 0x40) {
|
|
tile_pattern_address = tile_pattern + tile * 16 + (7-by)*2;
|
|
}
|
|
|
|
if(attrs & 0x08) {
|
|
tile_a = bank1[tile_pattern_address++];
|
|
tile_b = bank1[tile_pattern_address];
|
|
} else {
|
|
tile_a = bank0[tile_pattern_address++];
|
|
tile_b = bank0[tile_pattern_address];
|
|
}
|
|
|
|
if(attrs & 0x20) {
|
|
tile_a = gbInvertTab[tile_a];
|
|
tile_b = gbInvertTab[tile_b];
|
|
}
|
|
|
|
while(bx > 0) {
|
|
u8 c = (tile_a & bx) ? 1 : 0;
|
|
c += ((tile_b & bx) ? 2 : 0);
|
|
|
|
gbLineBuffer[x] = c; // mark the gbLineBuffer color
|
|
|
|
if(attrs & 0x80)
|
|
gbLineBuffer[x] |= 0x300;
|
|
|
|
if(gbCgbMode) {
|
|
c = c + (attrs & 7)*4;
|
|
} else {
|
|
c = (gbBgpLine[x+(gbSpeed ? 5 : 11)+SpritesTicks]>>(c<<1)) &3;
|
|
if(gbSgbMode && !gbCgbMode) {
|
|
int dx = x >> 3;
|
|
int dy = y >> 3;
|
|
|
|
int palette = gbSgbATF[dy * 20 + dx];
|
|
|
|
if(c == 0)
|
|
palette = 0;
|
|
|
|
c = c + 4*palette;
|
|
}
|
|
}
|
|
gbLineMix[x] = gbColorOption ? gbColorFilter[gbPalette[c] & 0x7FFF] :
|
|
gbPalette[c] & 0x7FFF;
|
|
x++;
|
|
if(x >= 160)
|
|
break;
|
|
bx >>= 1;
|
|
}
|
|
|
|
bx = 128;
|
|
|
|
SpritesTicks = gbSpritesTicks[x]*(gbSpeed ? 2 : 4);
|
|
|
|
sx = gbSCXLine[x+(gbSpeed ? 0 : 4)+SpritesTicks];
|
|
|
|
sy = gbSCYLine[x+(gbSpeed ? 11 : 5)+SpritesTicks];
|
|
|
|
|
|
tx = ((sx+x)>>3) & 0x1f;
|
|
|
|
sy+=y;
|
|
|
|
sy &= 255;
|
|
|
|
ty = sy >> 3;
|
|
|
|
by = sy & 7;
|
|
|
|
tile_pattern_address = tile_pattern + tile * 16 + by * 2;
|
|
|
|
tile_map_line_y = tile_map + ty * 32;
|
|
|
|
tile_map_address = tile_map_line_y + tx;
|
|
|
|
if(bank1)
|
|
attrs = bank1[tile_map_line_y + tx];
|
|
|
|
tile = bank0[tile_map_line_y + tx];
|
|
|
|
if(!(register_LCDC & 0x10))
|
|
tile ^= 0x80;
|
|
|
|
tile_pattern_address = tile_pattern + tile * 16 + by * 2;
|
|
}
|
|
} else {
|
|
// Use gbBgp[0] instead of 0 (?)
|
|
// (this fixes white flashes on Last Bible II)
|
|
// Also added the gbColorOption (fixes Dracula Densetsu II color problems)
|
|
for(int i = 0; i < 160; i++)
|
|
{
|
|
u16 color = gbColorOption ? gbColorFilter[0x7FFF] :
|
|
0x7FFF;
|
|
if (!gbCgbMode)
|
|
color = gbColorOption ? gbColorFilter[gbPalette[gbBgpLine[i+(gbSpeed ? 5 : 11)+gbSpritesTicks[i]*(gbSpeed ? 2 : 4)]&3] & 0x7FFF] :
|
|
gbPalette[gbBgpLine[i+(gbSpeed ? 5 : 11)+gbSpritesTicks[i]*(gbSpeed ? 2 : 4)]&3] & 0x7FFF;
|
|
gbLineMix[i] = color;
|
|
gbLineBuffer[i] = 0;
|
|
}
|
|
}
|
|
|
|
// do the window display
|
|
// LCDC.0 also enables/disables the window in !gbCgbMode ?!?!
|
|
// (tested on real hardware)
|
|
// This fixes Last Bible II & Zankurou Musouken
|
|
if((register_LCDC & 0x01 || gbCgbMode) && (register_LCDC & 0x20) &&
|
|
(layerSettings & 0x2000) && (gbWindowLine != -2)) {
|
|
int i = 0;
|
|
// Fix (accurate emulation) for most of the window display problems
|
|
// (ie. Zen - Intergalactic Ninja, Urusei Yatsura...).
|
|
if ((gbWindowLine == -1) || (gbWindowLine>144))
|
|
{
|
|
inUseRegister_WY = oldRegister_WY;
|
|
if (register_LY>oldRegister_WY)
|
|
gbWindowLine = 146;
|
|
// for (i = 0; i<160; i++)
|
|
// gbWindowColor[i] = gbLineMix[i];
|
|
}
|
|
|
|
int wy = inUseRegister_WY;
|
|
|
|
if(y >= inUseRegister_WY) {
|
|
|
|
if (gbWindowLine == -1)
|
|
gbWindowLine = 0;
|
|
|
|
int wx = register_WX;
|
|
int swx = 0;
|
|
wx -= 7;
|
|
|
|
if( wx <= 159 && gbWindowLine <= 143) {
|
|
|
|
tile_map = 0x1800;
|
|
|
|
if((register_LCDC & 0x40) != 0)
|
|
tile_map = 0x1c00;
|
|
|
|
|
|
tx = 0;
|
|
ty = gbWindowLine >> 3;
|
|
|
|
bx = 128;
|
|
by = gbWindowLine & 7;
|
|
|
|
// Tries to emulate the 'window scrolling bug' when wx == 0 (ie. wx-7 == -7).
|
|
// Nothing close to perfect, but good enought for now...
|
|
if (wx == -7)
|
|
{
|
|
swx = 7-((gbSCXLine[0]-1) & 7);
|
|
bx >>= ((gbSCXLine[0]+((swx != 1) ? 1 : 0)) & 7);
|
|
if (swx == 1)
|
|
swx = 2;
|
|
|
|
//bx >>= ((gbSCXLine[0]+(((swx>1) && (swx != 7)) ? 1 : 0)) & 7);
|
|
|
|
if ((swx == 7))
|
|
{
|
|
//wx = 0;
|
|
if ((gbWindowLine>0) || (wy == 0))
|
|
swx = 0;
|
|
}
|
|
}
|
|
else
|
|
if(wx < 0) {
|
|
bx >>= (-wx);
|
|
wx = 0;
|
|
}
|
|
|
|
tile_map_line_y = tile_map + ty * 32;
|
|
|
|
tile_map_address = tile_map_line_y + tx;
|
|
|
|
x = wx;
|
|
|
|
tile = bank0[tile_map_address];
|
|
u8 attrs = 0;
|
|
if(bank1)
|
|
attrs = bank1[tile_map_address];
|
|
tile_map_address++;
|
|
|
|
if((register_LCDC & 16) == 0) {
|
|
if(tile < 128) tile += 128;
|
|
else tile -= 128;
|
|
}
|
|
|
|
tile_pattern_address = tile_pattern + tile * 16 + by*2;
|
|
|
|
if (wx)
|
|
for (i = 0; i<swx; i++)
|
|
gbLineMix[i] = gbWindowColor[i];
|
|
|
|
while(x < 160) {
|
|
u8 tile_a = 0;
|
|
u8 tile_b = 0;
|
|
|
|
if(attrs & 0x40) {
|
|
tile_pattern_address = tile_pattern + tile * 16 + (7-by)*2;
|
|
}
|
|
|
|
if(attrs & 0x08) {
|
|
tile_a = bank1[tile_pattern_address++];
|
|
tile_b = bank1[tile_pattern_address];
|
|
} else {
|
|
tile_a = bank0[tile_pattern_address++];
|
|
tile_b = bank0[tile_pattern_address];
|
|
}
|
|
|
|
if(attrs & 0x20) {
|
|
tile_a = gbInvertTab[tile_a];
|
|
tile_b = gbInvertTab[tile_b];
|
|
}
|
|
|
|
while(bx > 0) {
|
|
u8 c = (tile_a & bx) != 0 ? 1 : 0;
|
|
c += ((tile_b & bx) != 0 ? 2 : 0);
|
|
|
|
if (x>=0)
|
|
{
|
|
if(attrs & 0x80)
|
|
gbLineBuffer[x] = 0x300 + c;
|
|
else
|
|
gbLineBuffer[x] = 0x100 + c;
|
|
|
|
if(gbCgbMode) {
|
|
c = c + (attrs & 7) * 4;
|
|
} else {
|
|
c = (gbBgpLine[x+(gbSpeed ? 5 : 11)+gbSpritesTicks[x]*(gbSpeed ? 2 : 4)]>>(c<<1)) &3;
|
|
if(gbSgbMode && !gbCgbMode) {
|
|
int dx = x >> 3;
|
|
int dy = y >> 3;
|
|
|
|
int palette = gbSgbATF[dy * 20 + dx];
|
|
|
|
if(c == 0)
|
|
palette = 0;
|
|
|
|
c = c + 4*palette;
|
|
}
|
|
}
|
|
gbLineMix[x] = gbColorOption ? gbColorFilter[gbPalette[c] & 0x7FFF] :
|
|
gbPalette[c] & 0x7FFF;
|
|
}
|
|
x++;
|
|
if(x >= 160)
|
|
break;
|
|
bx >>= 1;
|
|
}
|
|
tx++;
|
|
if(tx == 32)
|
|
tx = 0;
|
|
bx = 128;
|
|
tile = bank0[tile_map_line_y + tx];
|
|
if(bank1)
|
|
attrs = bank1[tile_map_line_y + tx];
|
|
|
|
if((register_LCDC & 16) == 0) {
|
|
if(tile < 128) tile += 128;
|
|
else tile -= 128;
|
|
}
|
|
tile_pattern_address = tile_pattern + tile * 16 + by * 2;
|
|
}
|
|
|
|
//for (i = swx; i<160; i++)
|
|
// gbLineMix[i] = gbWindowColor[i];
|
|
gbWindowLine++;
|
|
}
|
|
}
|
|
}
|
|
else if (gbWindowLine == -2)
|
|
{
|
|
inUseRegister_WY = oldRegister_WY;
|
|
if (register_LY>oldRegister_WY)
|
|
gbWindowLine = 146;
|
|
else
|
|
gbWindowLine = 0;
|
|
}
|
|
} else {
|
|
u16 color = gbColorOption ? gbColorFilter[0x7FFF] :
|
|
0x7FFF;
|
|
if (!gbCgbMode)
|
|
color = gbColorOption ? gbColorFilter[gbPalette[0] & 0x7FFF] :
|
|
gbPalette[0] & 0x7FFF;
|
|
for(int i = 0; i < 160; i++)
|
|
{
|
|
gbLineMix[i] = color;
|
|
gbLineBuffer[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void gbDrawSpriteTile(int tile, int x,int y,int t, int flags,
|
|
int size,int spriteNumber)
|
|
{
|
|
u8 * bank0;
|
|
u8 * bank1;
|
|
if(gbCgbMode) {
|
|
if(register_VBK & 1) {
|
|
bank0 = &gbVram[0x0000];
|
|
bank1 = &gbVram[0x2000];
|
|
} else {
|
|
bank0 = &gbVram[0x0000];
|
|
bank1 = &gbVram[0x2000];
|
|
}
|
|
} else {
|
|
bank0 = &gbMemory[0x8000];
|
|
bank1 = NULL;
|
|
}
|
|
|
|
int init = 0x0000;
|
|
|
|
for (int i = 0; i<4; i++)
|
|
{
|
|
gbObp0[i] = (gbObp0Line[x+11+gbSpritesTicks[x]*(gbSpeed ? 2 : 4)]>>(i<<1)) & 3;
|
|
gbObp1[i] = (gbObp1Line[x+11+gbSpritesTicks[x]*(gbSpeed ? 2 : 4)]>>(i<<1)) & 3;
|
|
}
|
|
u8 *pal = gbObp0;
|
|
|
|
int flipx = (flags & 0x20);
|
|
int flipy = (flags & 0x40);
|
|
|
|
if((flags & 0x10))
|
|
pal = gbObp1;
|
|
|
|
if(flipy) {
|
|
t = (size ? 15 : 7) - t;
|
|
}
|
|
|
|
int prio = flags & 0x80;
|
|
|
|
int address = init + tile * 16 + 2*t;
|
|
int a = 0;
|
|
int b = 0;
|
|
|
|
if(gbCgbMode && (flags & 0x08)) {
|
|
a = bank1[address++];
|
|
b = bank1[address++];
|
|
} else {
|
|
a = bank0[address++];
|
|
b = bank0[address++];
|
|
}
|
|
|
|
for(int xx = 0; xx < 8; xx++) {
|
|
u8 mask = 1 << (7-xx);
|
|
u8 c = 0;
|
|
if( (a & mask))
|
|
c++;
|
|
if( (b & mask))
|
|
c+=2;
|
|
|
|
if(c==0) continue;
|
|
|
|
int xxx = xx+x;
|
|
if(flipx)
|
|
xxx = (7-xx+x);
|
|
|
|
if(xxx < 0 || xxx > 159)
|
|
continue;
|
|
|
|
u16 color = gbLineBuffer[xxx];
|
|
|
|
// Fixes OAM-BG priority
|
|
if(prio && (register_LCDC & 1)) {
|
|
if(color < 0x200 && ((color & 0xFF) != 0))
|
|
continue;
|
|
}
|
|
// Fixes OAM-BG priority for Moorhuhn 2
|
|
if(color >= 0x300 && color != 0x300 && (register_LCDC & 1))
|
|
continue;
|
|
else if(color >= 0x200 && color < 0x300) {
|
|
int sprite = color & 0xff;
|
|
|
|
int spriteX = gbMemory[0xfe00 + 4 * sprite + 1] - 8;
|
|
|
|
if(spriteX == x) {
|
|
if(sprite < spriteNumber)
|
|
continue;
|
|
} else {
|
|
if(gbCgbMode) {
|
|
if(sprite < spriteNumber)
|
|
continue;
|
|
} else {
|
|
// Fixes GB sprites priorities (was '< x + 8' before)
|
|
// ('A boy and his blob...' sprites' emulation is now correct)
|
|
if(spriteX < x)
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
gbLineBuffer[xxx] = 0x200 + spriteNumber;
|
|
|
|
// make sure that sprites will work even in CGB mode
|
|
if(gbCgbMode) {
|
|
c = c + (flags & 0x07)*4 + 32;
|
|
} else {
|
|
c = pal[c];
|
|
|
|
if(gbSgbMode && !gbCgbMode) {
|
|
int dx = xxx >> 3;
|
|
int dy = y >> 3;
|
|
|
|
int palette = gbSgbATF[dy * 20 + dx];
|
|
|
|
if(c == 0)
|
|
palette = 0;
|
|
|
|
c = c + 4*palette;
|
|
} else {
|
|
c += 4;
|
|
}
|
|
}
|
|
|
|
gbLineMix[xxx] = gbColorOption ? gbColorFilter[gbPalette[c] & 0x7FFF] :
|
|
gbPalette[c] & 0x7FFF;
|
|
}
|
|
}
|
|
|
|
void gbDrawSprites(bool draw)
|
|
{
|
|
int x = 0;
|
|
int y = 0;
|
|
int count = 0;
|
|
|
|
int size = (register_LCDC & 4);
|
|
|
|
if (!draw)
|
|
memset (gbSpritesTicks, 0, sizeof(gbSpritesTicks));
|
|
|
|
if(!(register_LCDC & 0x80))
|
|
return;
|
|
|
|
if((register_LCDC & 2) && (layerSettings & 0x1000)) {
|
|
int yc = register_LY;
|
|
|
|
int address = 0xfe00;
|
|
for(int i = 0; i < 40; i++) {
|
|
y = gbMemory[address++];
|
|
x = gbMemory[address++];
|
|
int tile = gbMemory[address++];
|
|
if(size)
|
|
tile &= 254;
|
|
int flags = gbMemory[address++];
|
|
|
|
if(x > 0 && y > 0 && x < 168 && y < 160) {
|
|
// check if sprite intersects current line
|
|
int t = yc -y + 16;
|
|
if((size && t >=0 && t < 16) || (!size && t >= 0 && t < 8)) {
|
|
if (draw)
|
|
gbDrawSpriteTile(tile,x-8,yc,t,flags,size,i);
|
|
else
|
|
{
|
|
for (int j = x-8; j<300; j++)
|
|
if (j>=0)
|
|
{
|
|
if (gbSpeed)
|
|
gbSpritesTicks[j] += 5;
|
|
else
|
|
gbSpritesTicks[j] += 2+(count&1);
|
|
}
|
|
}
|
|
count++;
|
|
}
|
|
}
|
|
// sprite limit reached!
|
|
if(count >= 10)
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
}
|