[picodrive.git] / Pico / cd / gfx_cd.c

// TODO...

// #include <string.h>
#include "../PicoInt.h"

#define rot_comp Pico_mcd->rot_comp

static const int Table_Rot_Time[] =
{
	0x00054000, 0x00048000, 0x00040000, 0x00036000,          //; 008-032               ; briefing - sprite
	0x0002E000, 0x00028000, 0x00024000, 0x00022000,          //; 036-064               ; arbre souvent
	0x00021000, 0x00020000, 0x0001E000, 0x0001B800,          //; 068-096               ; map thunderstrike
	0x00019800, 0x00017A00, 0x00015C00, 0x00013E00,          //; 100-128               ; logo défoncé

	0x00012000, 0x00011800, 0x00011000, 0x00010800,          //; 132-160               ; briefing - map
	0x00010000, 0x0000F800, 0x0000F000, 0x0000E800,          //; 164-192
	0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800,          //; 196-224
	0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800,          //; 228-256               ; batman visage

	0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00,          //; 260-288
	0x00009C00, 0x00009B00, 0x00009A00, 0x00009900,          //; 292-320
	0x00009800, 0x00009700, 0x00009600, 0x00009500,          //; 324-352
	0x00009400, 0x00009300, 0x00009200, 0x00009100,          //; 356-384

	0x00009000, 0x00008F00, 0x00008E00, 0x00008D00,          //; 388-416
	0x00008C00, 0x00008B00, 0x00008A00, 0x00008900,          //; 420-448
	0x00008800, 0x00008700, 0x00008600, 0x00008500,          //; 452-476
	0x00008400, 0x00008300, 0x00008200, 0x00008100,          //; 480-512
};


static void gfx_cd_start(void)
{
	int upd_len;

	dprintf("gfx_cd_start()");

	// rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4; // unused
	rot_comp.Function = (rot_comp.Reg_58 & 7) | (Pico_mcd->s68k_regs[3] & 0x18);	// Jmp_Adr
	// rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2; // unused?
	rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7;
	rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2;

	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
	upd_len = Table_Rot_Time[upd_len];
	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;

	rot_comp.Reg_58 |= 0x8000;	// Stamp_Size,  we start a new GFX operation

	switch (rot_comp.Reg_58 & 6)	// Scr_16?
	{
		case 0:	// ?
			rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2;
			break;
		case 2: // .Dot_32
			rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2;
			break;
		case 4: // .Scr_16
			rot_comp.Stamp_Map_Adr = 0x20000;
			break;
		case 6: // .Scr_16_Dot_32
			rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2;
			break;
	}

	gfx_cd_update();
}


static void gfx_completed(void)
{
	rot_comp.Reg_58 &= 0x7fff;	// Stamp_Size
	rot_comp.Reg_64  = 0;
	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	{
		dprintf("gfx_cd irq 1");
		SekInterruptS68k(1);
	}
}


static void gfx_do(unsigned int func, unsigned short *stamp_base, unsigned int H_Dot)
{
	unsigned int eax, ebx, ecx, edx, esi, edi, pixel;
	unsigned int XD, Buffer_Adr;
	int DYXS;

	XD = rot_comp.Reg_60 & 7;
	Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	ecx = *(unsigned int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	edx = ecx >> 16;
	ecx = (ecx & 0xffff) << 8;
	edx <<= 8;
	DYXS = *(int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
	rot_comp.Vector_Adr += 8;

	// MAKE_IMAGE_LINE
	while (H_Dot)
	{
		if (func & 2)		// mode 32x32 dot
		{
			if (func & 4)	// 16x16 screen
			{
				ebx = ((ecx >> (11+5)) & 0x007f) |
				      ((edx >> (11-2)) & 0x3f80);
			}
			else		// 1x1 screen
			{
				ebx = ((ecx >> (11+5)) & 0x07) |
				      ((edx >> (11+2)) & 0x38);
			}
		}
		else			// mode 16x16 dot
		{
			if (func & 4)	// 16x16 screen
			{
				ebx = ((ecx >> (11+4)) & 0x00ff) |
				      ((edx >> (11-4)) & 0xff00);
			}
			else		// 1x1 screen
			{
				ebx = ((ecx >> (11+4)) & 0x0f) |
				      ((edx >> (11+0)) & 0xf0);
			}
		}

		// MAKE_IMAGE_PIXEL
		if (!(func & 1))	// NOT TILED
		{
			int mask = (func & 4) ? 0x00800000 : 0x00f80000;
			if ((ecx | edx) & mask)
			{
				if (func & 0x18) goto Next_Pixel;
				pixel = 0;
				goto Pixel_Out;
			}
		}

		edi = stamp_base[ebx];// | (stamp_base[ebx+1] << 16);
		esi = (edi & 0x7ff) << 7;
		if (!esi) { pixel = 0; goto Pixel_Out; }
		edi >>= (11+1);
		edi &= (0x1c>>1);
		eax = ecx;
		ebx = edx;
		if (func & 2) edi |= 1;	// 32 dots?
		switch (edi)
		{
			case 0x00:	// No_Flip_0, 16x16 dots
				ebx = (ebx >> 9) & 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 8) & 0x40) + ebx;
				break;
			case 0x01:	// No_Flip_0, 32x32 dots
				ebx = (ebx >> 9) & 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 7) & 0x180) + ebx;
				break;
			case 0x02:	// No_Flip_90, 16x16 dots
				eax = (eax >> 9) & 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap
				eax += ((ebx >> 8) & 0x40) ^ 0x40;
				break;
			case 0x03:	// No_Flip_90, 32x32 dots
				eax = (eax >> 9) & 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap
				eax += ((ebx >> 7) & 0x180) ^ 0x180;
				break;
			case 0x04:	// No_Flip_180, 16x16 dots
				ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap and flip
				eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
				break;
			case 0x05:	// No_Flip_180, 32x32 dots
				ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap and flip
				eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
				break;
			case 0x06:	// No_Flip_270, 16x16 dots
				eax = ((eax >> 9) & 0x3c) ^ 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap
				eax += (ebx >> 8) & 0x40;
				break;
			case 0x07:	// No_Flip_270, 32x32 dots
				eax = ((eax >> 9) & 0x7c) ^ 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap
				eax += (ebx >> 7) & 0x180;
				break;
			case 0x08:	// Flip_0, 16x16 dots
				ebx = (ebx >> 9) & 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap, flip
				eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
				break;
			case 0x09:	// Flip_0, 32x32 dots
				ebx = (ebx >> 9) & 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap, flip
				eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
				break;
			case 0x0a:	// Flip_90, 16x16 dots
				eax = ((eax >> 9) & 0x3c) ^ 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap, flip
				eax += ((ebx >> 8) & 0x40) ^ 0x40;
				break;
			case 0x0b:	// Flip_90, 32x32 dots
				eax = ((eax >> 9) & 0x7c) ^ 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap, flip
				eax += ((ebx >> 7) & 0x180) ^ 0x180;
				break;
			case 0x0c:	// Flip_180, 16x16 dots
				ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 8) & 0x40) + ebx;
				break;
			case 0x0d:	// Flip_180, 32x32 dots
				ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 7) & 0x180) + ebx;
				break;
			case 0x0e:	// Flip_270, 16x16 dots
				eax = (eax >> 9) & 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap, flip
				eax += (ebx >> 8) & 0x40;
				break;
			case 0x0f:	// Flip_270, 32x32 dots
				eax = (eax >> 9) & 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap, flip
				eax += (ebx >> 7) & 0x180;
				break;
		}

		pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
		if (!(edi & 0x800)) pixel >>= 4;
		else pixel &= 0x0f;

Pixel_Out:
		if (!pixel && (func & 0x18)) goto Next_Pixel;
		esi = Buffer_Adr + ((XD>>1)^1);				// pixel addr
		eax = *(Pico_mcd->word_ram2M + esi);			// old pixel
		if (XD & 1)
		{
			if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
			*(Pico_mcd->word_ram2M + esi) = pixel | (eax & 0xf0);
		}
		else
		{
			if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
			*(Pico_mcd->word_ram2M + esi) = (pixel << 4) | (eax & 0xf);
		}


Next_Pixel:
		ecx += (DYXS << 16) >> 16;	// rot_comp.DXS;
		edx +=  DYXS >> 16;		// rot_comp.DYS;
		XD++;
		if (XD >= 8)
		{
			Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
			XD = 0;
		}
		H_Dot--;
	}
	// end while


// nothing_to_draw:
	rot_comp.YD++;
	// rot_comp.V_Dot--; // will be done by caller
}


void gfx_cd_update(void)
{
	int V_Dot = rot_comp.Reg_64 & 0xff;
	int jobs;

	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);

	if (!V_Dot)
	{
		gfx_completed();
		return;
	}

	jobs = rot_comp.Float_Part >> 16;

	if (!jobs)
	{
		rot_comp.Float_Part += rot_comp.Draw_Speed;
		return;
	}

	rot_comp.Float_Part &= 0xffff;
	rot_comp.Float_Part += rot_comp.Draw_Speed;

	if (PicoOpt & 0x1000)			// scale/rot enabled
	{
		unsigned int func = rot_comp.Function;
		unsigned int H_Dot = rot_comp.Reg_62 & 0x1ff;
		unsigned short *stamp_base = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr);

		while (jobs--)
		{
			gfx_do(func, stamp_base, H_Dot);	// jmp [Jmp_Adr]:

			V_Dot--;				// dec byte [V_Dot]
			if (V_Dot == 0)
			{
				// GFX_Completed:
				gfx_completed();
				return;
			}
		}
	}
	else
	{
		if (jobs >= V_Dot)
		{
			gfx_completed();
			return;
		}
		V_Dot -= jobs;
	}

	rot_comp.Reg_64 = V_Dot;
}


unsigned int gfx_cd_read(unsigned int a)
{
	unsigned int d = 0;

	switch (a) {
		case 0x58: d = rot_comp.Reg_58; break;
		case 0x5A: d = rot_comp.Reg_5A; break;
		case 0x5C: d = rot_comp.Reg_5C; break;
		case 0x5E: d = rot_comp.Reg_5E; break;
		case 0x60: d = rot_comp.Reg_60; break;
		case 0x62: d = rot_comp.Reg_62; break;
		case 0x64: d = rot_comp.Reg_64; break;
		case 0x66: break;
		default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
	}

	dprintf("gfx_cd_read(%02x) = %04x", a, d);

	return 0;
}

void gfx_cd_write16(unsigned int a, unsigned int d)
{
	dprintf("gfx_cd_write16(%x, %04x)", a, d);

	switch (a) {
		case 0x58: // .Reg_Stamp_Size
			rot_comp.Reg_58 = d & 7;
			return;

		case 0x5A: // .Reg_Stamp_Adr
			rot_comp.Reg_5A = d & 0xffe0;
			return;

		case 0x5C: // .Reg_IM_VCell_Size
			rot_comp.Reg_5C = d & 0x1f;
			return;

		case 0x5E: // .Reg_IM_Adr
			rot_comp.Reg_5E = d & 0xFFF8;
			return;

		case 0x60: // .Reg_IM_Offset
			rot_comp.Reg_60 = d & 0x3f;
			return;

		case 0x62: // .Reg_IM_HDot_Size
			rot_comp.Reg_62 = d & 0x1ff;
			return;

		case 0x64: // .Reg_IM_VDot_Size
			rot_comp.Reg_64 = d & 0xff;	// V_Dot, must be 32bit?
			return;

		case 0x66: // .Reg_Vector_Adr
			rot_comp.Reg_66 = d & 0xfffe;
			if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
			gfx_cd_start();
			return;

		default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
	}
}


void gfx_cd_reset(void)
{
	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
}


// --------------------------------

#include "cell_map.c"

typedef unsigned short u16;

// check: Heart of the alien, jaguar xj 220
void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
{
  unsigned char *base;
  unsigned int asrc, a2;
  u16 *r;

  base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];

  switch (Pico.video.type)
  {
    case 1: // vram
      r = Pico.vram;
      for(; len; len--)
      {
        asrc = cell_map(source >> 2) << 2;
        asrc |= source & 2;
        // if(a&1) d=(d<<8)|(d>>8); // ??
        r[a>>1] = *(u16 *)(base + asrc);
	source += 2;
        // AutoIncrement
        a=(u16)(a+inc);
      }
      rendstatus|=0x10;
      break;

    case 3: // cram
      Pico.m.dirtyPal = 1;
      r = Pico.cram;
      for(a2=a&0x7f; len; len--)
      {
        asrc = cell_map(source >> 2) << 2;
        asrc |= source & 2;
        r[a2>>1] = *(u16 *)(base + asrc);
	source += 2;
        // AutoIncrement
        a2+=inc;
        // good dest?
        if(a2 >= 0x80) break;
      }
      a=(a&0xff00)|a2;
      break;

    case 5: // vsram[a&0x003f]=d;
      r = Pico.vsram;
      for(a2=a&0x7f; len; len--)
      {
        asrc = cell_map(source >> 2) << 2;
        asrc |= source & 2;
        r[a2>>1] = *(u16 *)(base + asrc);
	source += 2;
        // AutoIncrement
        a2+=inc;
        // good dest?
        if(a2 >= 0x80) break;
      }
      a=(a&0xff00)|a2;
      break;
  }
  // remember addr
  Pico.video.addr=(u16)a;
}
Commit	Line	Data
cb4a513a	1	// TODO...
cb4a513a	2
51a902ae	3	// #include <string.h>
cb4a513a	4	#include "../PicoInt.h"
cb4a513a	5
d1df8786	6	#define rot_comp Pico_mcd->rot_comp
d1df8786	7
75736070	8	static const int Table_Rot_Time[] =
d1df8786	9	{
	10	0x00054000, 0x00048000, 0x00040000, 0x00036000, //; 008-032 ; briefing - sprite
	11	0x0002E000, 0x00028000, 0x00024000, 0x00022000, //; 036-064 ; arbre souvent
	12	0x00021000, 0x00020000, 0x0001E000, 0x0001B800, //; 068-096 ; map thunderstrike
	13	0x00019800, 0x00017A00, 0x00015C00, 0x00013E00, //; 100-128 ; logo défoncé
	14
	15	0x00012000, 0x00011800, 0x00011000, 0x00010800, //; 132-160 ; briefing - map
	16	0x00010000, 0x0000F800, 0x0000F000, 0x0000E800, //; 164-192
	17	0x0000E000, 0x0000D800, 0x0000D000, 0x0000C800, //; 196-224
	18	0x0000C000, 0x0000B800, 0x0000B000, 0x0000A800, //; 228-256 ; batman visage
	19
	20	0x0000A000, 0x00009F00, 0x00009E00, 0x00009D00, //; 260-288
	21	0x00009C00, 0x00009B00, 0x00009A00, 0x00009900, //; 292-320
	22	0x00009800, 0x00009700, 0x00009600, 0x00009500, //; 324-352
	23	0x00009400, 0x00009300, 0x00009200, 0x00009100, //; 356-384
	24
	25	0x00009000, 0x00008F00, 0x00008E00, 0x00008D00, //; 388-416
	26	0x00008C00, 0x00008B00, 0x00008A00, 0x00008900, //; 420-448
	27	0x00008800, 0x00008700, 0x00008600, 0x00008500, //; 452-476
	28	0x00008400, 0x00008300, 0x00008200, 0x00008100, //; 480-512
	29	};
	30
	31
cb4a513a	32	static void gfx_cd_start(void)
cb4a513a	33	{
d1df8786	34	int upd_len;
	35
	36	dprintf("gfx_cd_start()");
	37
528ec956	38	// rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4; // unused
a4030801	39	rot_comp.Function = (rot_comp.Reg_58 & 7) \| (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr
528ec956	40	// rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2; // unused?
a4030801	41	rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7;
	42	rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2;
	43
d1df8786	44	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
d1df8786	45	upd_len = Table_Rot_Time[upd_len];
d1df8786	46	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;
	47
	48	rot_comp.Reg_58 \|= 0x8000; // Stamp_Size, we start a new GFX operation
	49
a4030801	50	switch (rot_comp.Reg_58 & 6) // Scr_16?
	51	{
	52	case 0: // ?
	53	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2;
	54	break;
	55	case 2: // .Dot_32
	56	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2;
	57	break;
	58	case 4: // .Scr_16
	59	rot_comp.Stamp_Map_Adr = 0x20000;
	60	break;
	61	case 6: // .Scr_16_Dot_32
	62	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2;
	63	break;
	64	}
	65
d1df8786	66	gfx_cd_update();
	67	}
	68
	69
	70	static void gfx_completed(void)
	71	{
	72	rot_comp.Reg_58 &= 0x7fff; // Stamp_Size
	73	rot_comp.Reg_64 = 0;
cb4a513a	74	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	75	{
	76	dprintf("gfx_cd irq 1");
	77	SekInterruptS68k(1);
	78	}
	79	}
	80
d1df8786	81
00bd648e	82	static void gfx_do(unsigned int func, unsigned short *stamp_base, unsigned int H_Dot)
a4030801	83	{
528ec956	84	unsigned int eax, ebx, ecx, edx, esi, edi, pixel;
00bd648e	85	unsigned int XD, Buffer_Adr;
528ec956	86	int DYXS;
a4030801	87
528ec956	88	XD = rot_comp.Reg_60 & 7;
528ec956	89	Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
a4030801	90	ecx = (unsigned int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	91	edx = ecx >> 16;
	92	ecx = (ecx & 0xffff) << 8;
	93	edx <<= 8;
528ec956	94	DYXS = (int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
a4030801	95	rot_comp.Vector_Adr += 8;
a4030801	96
a4030801	97	// MAKE_IMAGE_LINE
528ec956	98	while (H_Dot)
a4030801	99	{
	100	if (func & 2) // mode 32x32 dot
	101	{
	102	if (func & 4) // 16x16 screen
	103	{
00bd648e	104	ebx = ((ecx >> (11+5)) & 0x007f) \|
00bd648e	105	((edx >> (11-2)) & 0x3f80);
a4030801	106	}
	107	else // 1x1 screen
	108	{
00bd648e	109	ebx = ((ecx >> (11+5)) & 0x07) \|
00bd648e	110	((edx >> (11+2)) & 0x38);
a4030801	111	}
	112	}
	113	else // mode 16x16 dot
	114	{
	115	if (func & 4) // 16x16 screen
	116	{
00bd648e	117	ebx = ((ecx >> (11+4)) & 0x00ff) \|
00bd648e	118	((edx >> (11-4)) & 0xff00);
a4030801	119	}
	120	else // 1x1 screen
	121	{
00bd648e	122	ebx = ((ecx >> (11+4)) & 0x0f) \|
00bd648e	123	((edx >> (11+0)) & 0xf0);
a4030801	124	}
a4030801	125	}
a4030801	126
a4030801	127	// MAKE_IMAGE_PIXEL
	128	if (!(func & 1)) // NOT TILED
	129	{
528ec956	130	int mask = (func & 4) ? 0x00800000 : 0x00f80000;
528ec956	131	if ((ecx \| edx) & mask)
a4030801	132	{
528ec956	133	if (func & 0x18) goto Next_Pixel;
	134	pixel = 0;
	135	goto Pixel_Out;
a4030801	136	}
a4030801	137	}
528ec956	138
00bd648e	139	edi = stamp_base[ebx];// \| (stamp_base[ebx+1] << 16);
00bd648e	140	esi = (edi & 0x7ff) << 7;
528ec956	141	if (!esi) { pixel = 0; goto Pixel_Out; }
00bd648e	142	edi >>= (11+1);
a4030801	143	edi &= (0x1c>>1);
	144	eax = ecx;
	145	ebx = edx;
	146	if (func & 2) edi \|= 1; // 32 dots?
	147	switch (edi)
	148	{
	149	case 0x00: // No_Flip_0, 16x16 dots
	150	ebx = (ebx >> 9) & 0x3c;
	151	ebx += esi;
	152	edi = (eax & 0x3800) ^ 0x1000; // bswap
	153	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	154	break;
	155	case 0x01: // No_Flip_0, 32x32 dots
	156	ebx = (ebx >> 9) & 0x7c;
	157	ebx += esi;
	158	edi = (eax & 0x3800) ^ 0x1000; // bswap
	159	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	160	break;
	161	case 0x02: // No_Flip_90, 16x16 dots
	162	eax = (eax >> 9) & 0x3c;
	163	eax += esi;
	164	edi = (ebx & 0x3800) ^ 0x2800; // bswap
	165	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	166	break;
	167	case 0x03: // No_Flip_90, 32x32 dots
	168	eax = (eax >> 9) & 0x7c;
	169	eax += esi;
	170	edi = (ebx & 0x3800) ^ 0x2800; // bswap
01bc6b19	171	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	172	break;
	173	case 0x04: // No_Flip_180, 16x16 dots
	174	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	175	ebx += esi;
	176	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	177	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	178	break;
	179	case 0x05: // No_Flip_180, 32x32 dots
	180	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	181	ebx += esi;
	182	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
	183	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	184	break;
	185	case 0x06: // No_Flip_270, 16x16 dots
	186	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	187	eax += esi;
	188	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	189	eax += (ebx >> 8) & 0x40;
a4030801	190	break;
	191	case 0x07: // No_Flip_270, 32x32 dots
	192	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	193	eax += esi;
	194	edi = (ebx & 0x3800) ^ 0x1000; // bswap
	195	eax += (ebx >> 7) & 0x180;
a4030801	196	break;
a4030801	197	case 0x08: // Flip_0, 16x16 dots
01bc6b19	198	ebx = (ebx >> 9) & 0x3c;
a4030801	199	ebx += esi;
	200	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	201	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
a4030801	202	break;
a4030801	203	case 0x09: // Flip_0, 32x32 dots
01bc6b19	204	ebx = (ebx >> 9) & 0x7c;
a4030801	205	ebx += esi;
	206	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
	207	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
a4030801	208	break;
	209	case 0x0a: // Flip_90, 16x16 dots
	210	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
	211	eax += esi;
	212	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	213	eax += ((ebx >> 8) & 0x40) ^ 0x40;
a4030801	214	break;
	215	case 0x0b: // Flip_90, 32x32 dots
	216	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
	217	eax += esi;
	218	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
	219	eax += ((ebx >> 7) & 0x180) ^ 0x180;
a4030801	220	break;
	221	case 0x0c: // Flip_180, 16x16 dots
	222	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
	223	ebx += esi;
	224	edi = (eax & 0x3800) ^ 0x1000; // bswap
	225	eax = ((eax >> 8) & 0x40) + ebx;
a4030801	226	break;
	227	case 0x0d: // Flip_180, 32x32 dots
	228	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
	229	ebx += esi;
	230	edi = (eax & 0x3800) ^ 0x1000; // bswap
	231	eax = ((eax >> 7) & 0x180) + ebx;
a4030801	232	break;
	233	case 0x0e: // Flip_270, 16x16 dots
	234	eax = (eax >> 9) & 0x3c;
	235	eax += esi;
	236	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	237	eax += (ebx >> 8) & 0x40;
a4030801	238	break;
	239	case 0x0f: // Flip_270, 32x32 dots
	240	eax = (eax >> 9) & 0x7c;
	241	eax += esi;
	242	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
	243	eax += (ebx >> 7) & 0x180;
a4030801	244	break;
	245	}
	246
01bc6b19	247	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
01bc6b19	248	if (!(edi & 0x800)) pixel >>= 4;
528ec956	249	else pixel &= 0x0f;
01bc6b19	250
a4030801	251	Pixel_Out:
a4030801	252	if (!pixel && (func & 0x18)) goto Next_Pixel;
528ec956	253	esi = Buffer_Adr + ((XD>>1)^1); // pixel addr
a4030801	254	eax = *(Pico_mcd->word_ram2M + esi); // old pixel
528ec956	255	if (XD & 1)
a4030801	256	{
	257	if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	258	*(Pico_mcd->word_ram2M + esi) = pixel \| (eax & 0xf0);
	259	}
	260	else
	261	{
	262	if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
	263	*(Pico_mcd->word_ram2M + esi) = (pixel << 4) \| (eax & 0xf);
	264	}
	265
	266
	267	Next_Pixel:
528ec956	268	ecx += (DYXS << 16) >> 16; // rot_comp.DXS;
	269	edx += DYXS >> 16; // rot_comp.DYS;
	270	XD++;
	271	if (XD >= 8)
a4030801	272	{
528ec956	273	Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
528ec956	274	XD = 0;
a4030801	275	}
528ec956	276	H_Dot--;
a4030801	277	}
528ec956	278	// end while
a4030801	279
a4030801	280
00bd648e	281	// nothing_to_draw:
a4030801	282	rot_comp.YD++;
	283	// rot_comp.V_Dot--; // will be done by caller
	284	}
d1df8786	285
d1df8786	286
cb4a513a	287	void gfx_cd_update(void)
cb4a513a	288	{
00bd648e	289	int V_Dot = rot_comp.Reg_64 & 0xff;
d1df8786	290	int jobs;
	291
	292	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
	293
00bd648e	294	if (!V_Dot)
d1df8786	295	{
d1df8786	296	gfx_completed();
	297	return;
	298	}
	299
	300	jobs = rot_comp.Float_Part >> 16;
	301
	302	if (!jobs)
	303	{
	304	rot_comp.Float_Part += rot_comp.Draw_Speed;
	305	return;
	306	}
	307
	308	rot_comp.Float_Part &= 0xffff;
	309	rot_comp.Float_Part += rot_comp.Draw_Speed;
	310
00bd648e	311	if (PicoOpt & 0x1000) // scale/rot enabled
d1df8786	312	{
00bd648e	313	unsigned int func = rot_comp.Function;
	314	unsigned int H_Dot = rot_comp.Reg_62 & 0x1ff;
	315	unsigned short stamp_base = (unsigned short ) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr);
a4030801	316
00bd648e	317	while (jobs--)
	318	{
	319	gfx_do(func, stamp_base, H_Dot); // jmp [Jmp_Adr]:
d1df8786	320
00bd648e	321	V_Dot--; // dec byte [V_Dot]
	322	if (V_Dot == 0)
	323	{
	324	// GFX_Completed:
	325	gfx_completed();
	326	return;
	327	}
	328	}
	329	}
	330	else
	331	{
	332	if (jobs >= V_Dot)
d1df8786	333	{
d1df8786	334	gfx_completed();
	335	return;
	336	}
00bd648e	337	V_Dot -= jobs;
d1df8786	338	}
00bd648e	339
00bd648e	340	rot_comp.Reg_64 = V_Dot;
cb4a513a	341	}
	342
	343
	344	unsigned int gfx_cd_read(unsigned int a)
	345	{
d1df8786	346	unsigned int d = 0;
	347
	348	switch (a) {
	349	case 0x58: d = rot_comp.Reg_58; break;
	350	case 0x5A: d = rot_comp.Reg_5A; break;
	351	case 0x5C: d = rot_comp.Reg_5C; break;
	352	case 0x5E: d = rot_comp.Reg_5E; break;
	353	case 0x60: d = rot_comp.Reg_60; break;
	354	case 0x62: d = rot_comp.Reg_62; break;
	355	case 0x64: d = rot_comp.Reg_64; break;
	356	case 0x66: break;
fa1e5e29	357	default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
d1df8786	358	}
	359
	360	dprintf("gfx_cd_read(%02x) = %04x", a, d);
cb4a513a	361
cb4a513a	362	return 0;
	363	}
	364
5c69a605	365	void gfx_cd_write16(unsigned int a, unsigned int d)
cb4a513a	366	{
5c69a605	367	dprintf("gfx_cd_write16(%x, %04x)", a, d);
cb4a513a	368
cb4a513a	369	switch (a) {
d1df8786	370	case 0x58: // .Reg_Stamp_Size
	371	rot_comp.Reg_58 = d & 7;
	372	return;
	373
	374	case 0x5A: // .Reg_Stamp_Adr
	375	rot_comp.Reg_5A = d & 0xffe0;
	376	return;
	377
	378	case 0x5C: // .Reg_IM_VCell_Size
	379	rot_comp.Reg_5C = d & 0x1f;
	380	return;
	381
	382	case 0x5E: // .Reg_IM_Adr
	383	rot_comp.Reg_5E = d & 0xFFF8;
	384	return;
	385
	386	case 0x60: // .Reg_IM_Offset
	387	rot_comp.Reg_60 = d & 0x3f;
	388	return;
	389
	390	case 0x62: // .Reg_IM_HDot_Size
	391	rot_comp.Reg_62 = d & 0x1ff;
	392	return;
	393
	394	case 0x64: // .Reg_IM_VDot_Size
	395	rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
	396	return;
	397
	398	case 0x66: // .Reg_Vector_Adr
	399	rot_comp.Reg_66 = d & 0xfffe;
cb4a513a	400	if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
	401	gfx_cd_start();
	402	return;
d1df8786	403
5c69a605	404	default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
cb4a513a	405	}
	406	}
	407
d1df8786	408
51a902ae	409	void gfx_cd_reset(void)
51a902ae	410	{
fa1e5e29	411	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
	412	}
	413
	414
	415	// --------------------------------
	416
	417	#include "cell_map.c"
	418
	419	typedef unsigned short u16;
	420
0a051f55	421	// check: Heart of the alien, jaguar xj 220
fa1e5e29	422	void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
	423	{
	424	unsigned char *base;
	425	unsigned int asrc, a2;
	426	u16 *r;
	427
	428	base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];
	429
	430	switch (Pico.video.type)
	431	{
	432	case 1: // vram
	433	r = Pico.vram;
	434	for(; len; len--)
	435	{
	436	asrc = cell_map(source >> 2) << 2;
	437	asrc \|= source & 2;
	438	// if(a&1) d=(d<<8)\|(d>>8); // ??
	439	r[a>>1] = (u16 )(base + asrc);
	440	source += 2;
	441	// AutoIncrement
	442	a=(u16)(a+inc);
	443	}
	444	rendstatus\|=0x10;
	445	break;
	446
	447	case 3: // cram
	448	Pico.m.dirtyPal = 1;
	449	r = Pico.cram;
	450	for(a2=a&0x7f; len; len--)
	451	{
	452	asrc = cell_map(source >> 2) << 2;
	453	asrc \|= source & 2;
	454	r[a2>>1] = (u16 )(base + asrc);
	455	source += 2;
	456	// AutoIncrement
	457	a2+=inc;
	458	// good dest?
	459	if(a2 >= 0x80) break;
	460	}
	461	a=(a&0xff00)\|a2;
	462	break;
	463
	464	case 5: // vsram[a&0x003f]=d;
	465	r = Pico.vsram;
	466	for(a2=a&0x7f; len; len--)
	467	{
	468	asrc = cell_map(source >> 2) << 2;
	469	asrc \|= source & 2;
	470	r[a2>>1] = (u16 )(base + asrc);
	471	source += 2;
	472	// AutoIncrement
	473	a2+=inc;
	474	// good dest?
	475	if(a2 >= 0x80) break;
	476	}
	477	a=(a&0xff00)\|a2;
	478	break;
	479	}
	480	// remember addr
	481	Pico.video.addr=(u16)a;
51a902ae	482	}
51a902ae	483