[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
};


#if 1*0
typedef struct
{
	unsigned int Reg_58;	// Stamp_Size
	unsigned int Reg_5A;
	unsigned int Reg_5C;
	unsigned int Reg_5E;
	unsigned int Reg_60;
	unsigned int Reg_62;
	unsigned int Reg_64;	// V_Dot
	unsigned int Reg_66;

	unsigned int Stamp_Map_Adr;
	unsigned int Buffer_Adr;
	unsigned int Vector_Adr;
	unsigned int Function;	// Jmp_Adr;
	unsigned int Float_Part;
	unsigned int Draw_Speed;

	unsigned int XS;
	unsigned int YS;
	/*unsigned*/ int DXS;
	/*unsigned*/ int DYS;
	unsigned int XD;
	unsigned int YD;
	unsigned int XD_Mul;
	unsigned int H_Dot;
} Rot_Comp;
#endif

static void gfx_cd_start(void)
{
	int upd_len;

	dprintf("gfx_cd_start()");

	rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4;
	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;
	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(void)
{
	unsigned int eax, ebx, ecx, edx, esi, edi, pixel = 0;
	unsigned int func = rot_comp.Function;
	unsigned short *ptrs;

	rot_comp.XD = rot_comp.Reg_60 & 7;
	rot_comp.Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	rot_comp.H_Dot = rot_comp.Reg_62 & 0x1ff;
	ecx = *(unsigned int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	edx = ecx >> 16;
	ecx = (ecx & 0xffff) << 8;
	edx <<= 8;
	rot_comp.DXS = *(int *)(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
	rot_comp.DYS =  rot_comp.DXS >> 16;
	rot_comp.DXS = (rot_comp.DXS << 16) >> 16; // sign extend
	rot_comp.Vector_Adr += 8;
	//if ((rot_comp.H_Dot & 0x1ff) == 0)
	//	goto nothing_to_draw;

	// MAKE_IMAGE_LINE
	while (rot_comp.H_Dot)
	{
		if (func & 2)		// mode 32x32 dot
		{
			if (func & 4)	// 16x16 screen
			{
				eax = (ecx >> (11+5)) & 0x7f;
				ebx = (edx >> (11-2)) & 0x3f80;
			}
			else		// 1x1 screen
			{
				eax = (ecx >> (11+5)) & 0x0f;
				ebx = (edx >> (11+2)) & 0x38;
			}
		}
		else			// mode 16x16 dot
		{
			if (func & 4)	// 16x16 screen
			{
				eax = (ecx >> (11+4)) & 0xff;
				ebx = (edx >> (11-4)) & 0xff00;
			}
			else		// 1x1 screen
			{
				eax = (ecx >> (11+4)) & 0x0f;
				ebx = (edx >> (11+0)) & 0xf0;
			}
		}
		ebx += eax;

		esi = rot_comp.Stamp_Map_Adr;
		ptrs = (unsigned short *) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr + ebx*2);
		edi = ptrs[0] | (ptrs[1] << 16);

		// MAKE_IMAGE_PIXEL
		if (!(func & 1))	// NOT TILED
		{
			if (func & 4)	// 16x16 screen
			{
				if ((edx & 0x00800000) || (ecx & 0x00800000)) goto Pixel_Out;
			}
			else		// 1x1 screen
			{
				if ((edx & 0x00f80000) || (ecx & 0x00f80000)) goto Pixel_Out;
			}
		}
		esi = edi;
		edi >>= (11+1);
		esi = (esi & 0x7ff) << 7;
		if (!esi) goto Pixel_Out;
		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;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x01:	// No_Flip_0, 32x32 dots
				ebx = (ebx >> 9) & 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 7) & 0x180) + ebx;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x02:	// No_Flip_90, 16x16 dots
				eax = (eax >> 9) & 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap
				eax += ((ebx >> 8) & 0x40) ^ 0x40;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x03:	// No_Flip_90, 32x32 dots
				eax = (eax >> 9) & 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x2800;		// bswap
				eax += (ebx >> 7) & 0x180;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				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;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				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;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x06:	// No_Flip_270, 16x16 dots
				eax = ((eax >> 9) & 0x3c) ^ 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap
				eax += (ebx >> 8) & 0x40;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x07:	// No_Flip_270, 32x32 dots
				eax = ((eax >> 9) & 0x7c) ^ 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap
				eax += (ebx >> 7) & 0x180;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x08:	// Flip_0, 16x16 dots
				ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap, flip
				eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x09:	// Flip_0, 32x32 dots
				ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x2800;		// bswap, flip
				eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				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;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				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;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x0c:	// Flip_180, 16x16 dots
				ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 8) & 0x40) + ebx;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x0d:	// Flip_180, 32x32 dots
				ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
				ebx += esi;
				edi = (eax & 0x3800) ^ 0x1000;		// bswap
				eax = ((eax >> 7) & 0x180) + ebx;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x0e:	// Flip_270, 16x16 dots
				eax = (eax >> 9) & 0x3c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap, flip
				eax += (ebx >> 8) & 0x40;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
			case 0x0f:	// Flip_270, 32x32 dots
				eax = (eax >> 9) & 0x7c;
				eax += esi;
				edi = (ebx & 0x3800) ^ 0x1000;		// bswap, flip
				eax += (ebx >> 7) & 0x180;
				pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
				if (!(edi & 0x800)) pixel >>= 4;
				break;
		}

Pixel_Out:
//		pixel = 0;
//Finish:
		pixel &= 0x0f;
		if (!pixel && (func & 0x18)) goto Next_Pixel;
		esi = rot_comp.Buffer_Adr + ((rot_comp.XD>>1)^1);	// pixel addr
		eax = *(Pico_mcd->word_ram2M + esi);			// old pixel
		if (rot_comp.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 += rot_comp.DXS;
		edx += rot_comp.DYS;
		rot_comp.XD++;
		if (rot_comp.XD >= 8)
		{
			rot_comp.Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
			rot_comp.XD = 0;
		}
		rot_comp.H_Dot--;
	}


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


void gfx_cd_update(void)
{
	unsigned char *V_Dot = (unsigned char *) &rot_comp.Reg_64;
	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;

	while (jobs--)
	{
		if (PicoOpt & 0x1000)
			gfx_do();	// jmp [Jmp_Adr]:

		(*V_Dot)--;		// dec byte [V_Dot]

		if (!*V_Dot)
		{
			// GFX_Completed:
			gfx_completed();
			return;
		}
	}
}


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
	32	#if 1*0
	33	typedef struct
	34	{
	35	unsigned int Reg_58; // Stamp_Size
	36	unsigned int Reg_5A;
	37	unsigned int Reg_5C;
	38	unsigned int Reg_5E;
	39	unsigned int Reg_60;
	40	unsigned int Reg_62;
	41	unsigned int Reg_64; // V_Dot
	42	unsigned int Reg_66;
	43
	44	unsigned int Stamp_Map_Adr;
	45	unsigned int Buffer_Adr;
	46	unsigned int Vector_Adr;
a4030801	47	unsigned int Function; // Jmp_Adr;
d1df8786	48	unsigned int Float_Part;
	49	unsigned int Draw_Speed;
	50
	51	unsigned int XS;
	52	unsigned int YS;
a4030801	53	/unsigned/ int DXS;
a4030801	54	/unsigned/ int DYS;
d1df8786	55	unsigned int XD;
	56	unsigned int YD;
	57	unsigned int XD_Mul;
	58	unsigned int H_Dot;
	59	} Rot_Comp;
	60	#endif
cb4a513a	61
	62	static void gfx_cd_start(void)
	63	{
d1df8786	64	int upd_len;
	65
	66	dprintf("gfx_cd_start()");
	67
a4030801	68	rot_comp.XD_Mul = ((rot_comp.Reg_5C & 0x1f) + 1) * 4;
	69	rot_comp.Function = (rot_comp.Reg_58 & 7) \| (Pico_mcd->s68k_regs[3] & 0x18); // Jmp_Adr
	70	rot_comp.Buffer_Adr = (rot_comp.Reg_5E & 0xfff8) << 2;
	71	rot_comp.YD = (rot_comp.Reg_60 >> 3) & 7;
	72	rot_comp.Vector_Adr = (rot_comp.Reg_66 & 0xfffe) << 2;
	73
d1df8786	74	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
d1df8786	75	upd_len = Table_Rot_Time[upd_len];
d1df8786	76	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;
	77
	78	rot_comp.Reg_58 \|= 0x8000; // Stamp_Size, we start a new GFX operation
	79
a4030801	80	switch (rot_comp.Reg_58 & 6) // Scr_16?
	81	{
	82	case 0: // ?
	83	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xff80) << 2;
	84	break;
	85	case 2: // .Dot_32
	86	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xffe0) << 2;
	87	break;
	88	case 4: // .Scr_16
	89	rot_comp.Stamp_Map_Adr = 0x20000;
	90	break;
	91	case 6: // .Scr_16_Dot_32
	92	rot_comp.Stamp_Map_Adr = (rot_comp.Reg_5A & 0xe000) << 2;
	93	break;
	94	}
	95
d1df8786	96	gfx_cd_update();
	97	}
	98
	99
	100	static void gfx_completed(void)
	101	{
	102	rot_comp.Reg_58 &= 0x7fff; // Stamp_Size
	103	rot_comp.Reg_64 = 0;
cb4a513a	104	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	105	{
	106	dprintf("gfx_cd irq 1");
	107	SekInterruptS68k(1);
	108	}
	109	}
	110
d1df8786	111
a4030801	112	static void gfx_do(void)
	113	{
	114	unsigned int eax, ebx, ecx, edx, esi, edi, pixel = 0;
	115	unsigned int func = rot_comp.Function;
	116	unsigned short *ptrs;
	117
	118	rot_comp.XD = rot_comp.Reg_60 & 7;
	119	rot_comp.Buffer_Adr = ((rot_comp.Reg_5E & 0xfff8) + rot_comp.YD) << 2;
	120	rot_comp.H_Dot = rot_comp.Reg_62 & 0x1ff;
	121	ecx = (unsigned int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr);
	122	edx = ecx >> 16;
	123	ecx = (ecx & 0xffff) << 8;
	124	edx <<= 8;
	125	rot_comp.DXS = (int )(Pico_mcd->word_ram2M + rot_comp.Vector_Adr + 4);
	126	rot_comp.DYS = rot_comp.DXS >> 16;
	127	rot_comp.DXS = (rot_comp.DXS << 16) >> 16; // sign extend
	128	rot_comp.Vector_Adr += 8;
	129	//if ((rot_comp.H_Dot & 0x1ff) == 0)
	130	// goto nothing_to_draw;
	131
	132	// MAKE_IMAGE_LINE
	133	while (rot_comp.H_Dot)
	134	{
	135	if (func & 2) // mode 32x32 dot
	136	{
	137	if (func & 4) // 16x16 screen
	138	{
	139	eax = (ecx >> (11+5)) & 0x7f;
	140	ebx = (edx >> (11-2)) & 0x3f80;
	141	}
	142	else // 1x1 screen
	143	{
	144	eax = (ecx >> (11+5)) & 0x0f;
	145	ebx = (edx >> (11+2)) & 0x38;
	146	}
	147	}
	148	else // mode 16x16 dot
	149	{
	150	if (func & 4) // 16x16 screen
	151	{
	152	eax = (ecx >> (11+4)) & 0xff;
	153	ebx = (edx >> (11-4)) & 0xff00;
	154	}
	155	else // 1x1 screen
	156	{
	157	eax = (ecx >> (11+4)) & 0x0f;
	158	ebx = (edx >> (11+0)) & 0xf0;
	159	}
	160	}
	161	ebx += eax;
	162
	163	esi = rot_comp.Stamp_Map_Adr;
	164	ptrs = (unsigned short ) (Pico_mcd->word_ram2M + rot_comp.Stamp_Map_Adr + ebx2);
	165	edi = ptrs[0] \| (ptrs[1] << 16);
	166
	167	// MAKE_IMAGE_PIXEL
	168	if (!(func & 1)) // NOT TILED
	169	{
	170	if (func & 4) // 16x16 screen
	171	{
	172	if ((edx & 0x00800000) \|\| (ecx & 0x00800000)) goto Pixel_Out;
	173	}
	174	else // 1x1 screen
	175	{
176	if ((edx & 0x00f80000) \|\| (ecx & 0x00f80000)) goto Pixel_Out;
177	}
178	}
179	esi = edi;
180	edi >>= (11+1);
181	esi = (esi & 0x7ff) << 7;
182	if (!esi) goto Pixel_Out;
183	edi &= (0x1c>>1);
184	eax = ecx;
185	ebx = edx;
186	if (func & 2) edi \|= 1; // 32 dots?
187	switch (edi)
188	{
189	case 0x00: // No_Flip_0, 16x16 dots
190	ebx = (ebx >> 9) & 0x3c;
191	ebx += esi;
192	edi = (eax & 0x3800) ^ 0x1000; // bswap
193	eax = ((eax >> 8) & 0x40) + ebx;
194	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
195	if (!(edi & 0x800)) pixel >>= 4;
196	break;
197	case 0x01: // No_Flip_0, 32x32 dots
198	ebx = (ebx >> 9) & 0x7c;
199	ebx += esi;
200	edi = (eax & 0x3800) ^ 0x1000; // bswap
201	eax = ((eax >> 7) & 0x180) + ebx;
202	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
203	if (!(edi & 0x800)) pixel >>= 4;
204	break;
205	case 0x02: // No_Flip_90, 16x16 dots
206	eax = (eax >> 9) & 0x3c;
207	eax += esi;
208	edi = (ebx & 0x3800) ^ 0x2800; // bswap
209	eax += ((ebx >> 8) & 0x40) ^ 0x40;
210	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
211	if (!(edi & 0x800)) pixel >>= 4;
212	break;
213	case 0x03: // No_Flip_90, 32x32 dots
214	eax = (eax >> 9) & 0x7c;
215	eax += esi;
216	edi = (ebx & 0x3800) ^ 0x2800; // bswap
217	eax += (ebx >> 7) & 0x180;
218	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
219	if (!(edi & 0x800)) pixel >>= 4;
220	break;
221	case 0x04: // No_Flip_180, 16x16 dots
222	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
223	ebx += esi;
224	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
225	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
226	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
227	if (!(edi & 0x800)) pixel >>= 4;
228	break;
229	case 0x05: // No_Flip_180, 32x32 dots
230	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
231	ebx += esi;
232	edi = (eax & 0x3800) ^ 0x2800; // bswap and flip
233	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
234	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
235	if (!(edi & 0x800)) pixel >>= 4;
236	break;
237	case 0x06: // No_Flip_270, 16x16 dots
238	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
239	eax += esi;
240	edi = (ebx & 0x3800) ^ 0x1000; // bswap
241	eax += (ebx >> 8) & 0x40;
242	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
243	if (!(edi & 0x800)) pixel >>= 4;
244	break;
245	case 0x07: // No_Flip_270, 32x32 dots
246	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
247	eax += esi;
248	edi = (ebx & 0x3800) ^ 0x1000; // bswap
249	eax += (ebx >> 7) & 0x180;
250	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
251	if (!(edi & 0x800)) pixel >>= 4;
252	break;
253	case 0x08: // Flip_0, 16x16 dots
254	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
255	ebx += esi;
256	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
257	eax = (((eax >> 8) & 0x40) ^ 0x40) + ebx;
258	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
259	if (!(edi & 0x800)) pixel >>= 4;
260	break;
261	case 0x09: // Flip_0, 32x32 dots
262	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
263	ebx += esi;
264	edi = (eax & 0x3800) ^ 0x2800; // bswap, flip
265	eax = (((eax >> 7) & 0x180) ^ 0x180) + ebx;
266	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
267	if (!(edi & 0x800)) pixel >>= 4;
268	break;
269	case 0x0a: // Flip_90, 16x16 dots
270	eax = ((eax >> 9) & 0x3c) ^ 0x3c;
271	eax += esi;
272	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
273	eax += ((ebx >> 8) & 0x40) ^ 0x40;
274	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
275	if (!(edi & 0x800)) pixel >>= 4;
276	break;
277	case 0x0b: // Flip_90, 32x32 dots
278	eax = ((eax >> 9) & 0x7c) ^ 0x7c;
279	eax += esi;
280	edi = (ebx & 0x3800) ^ 0x2800; // bswap, flip
281	eax += ((ebx >> 7) & 0x180) ^ 0x180;
282	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
283	if (!(edi & 0x800)) pixel >>= 4;
284	break;
285	case 0x0c: // Flip_180, 16x16 dots
286	ebx = ((ebx >> 9) & 0x3c) ^ 0x3c;
287	ebx += esi;
288	edi = (eax & 0x3800) ^ 0x1000; // bswap
289	eax = ((eax >> 8) & 0x40) + ebx;
290	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
291	if (!(edi & 0x800)) pixel >>= 4;
292	break;
293	case 0x0d: // Flip_180, 32x32 dots
294	ebx = ((ebx >> 9) & 0x7c) ^ 0x7c;
295	ebx += esi;
296	edi = (eax & 0x3800) ^ 0x1000; // bswap
297	eax = ((eax >> 7) & 0x180) + ebx;
298	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
299	if (!(edi & 0x800)) pixel >>= 4;
300	break;
301	case 0x0e: // Flip_270, 16x16 dots
302	eax = (eax >> 9) & 0x3c;
303	eax += esi;
304	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
305	eax += (ebx >> 8) & 0x40;
306	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
307	if (!(edi & 0x800)) pixel >>= 4;
308	break;
309	case 0x0f: // Flip_270, 32x32 dots
310	eax = (eax >> 9) & 0x7c;
311	eax += esi;
312	edi = (ebx & 0x3800) ^ 0x1000; // bswap, flip
313	eax += (ebx >> 7) & 0x180;
314	pixel = *(Pico_mcd->word_ram2M + (edi >> 12) + eax);
315	if (!(edi & 0x800)) pixel >>= 4;
316	break;
317	}
318
319	Pixel_Out:
320	// pixel = 0;
321	//Finish:
322	pixel &= 0x0f;
323	if (!pixel && (func & 0x18)) goto Next_Pixel;
324	esi = rot_comp.Buffer_Adr + ((rot_comp.XD>>1)^1); // pixel addr
325	eax = *(Pico_mcd->word_ram2M + esi); // old pixel
326	if (rot_comp.XD & 1)
327	{
328	if ((eax & 0x0f) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
329	*(Pico_mcd->word_ram2M + esi) = pixel \| (eax & 0xf0);
330	}
331	else
332	{
333	if ((eax & 0xf0) && (func & 0x18) == 0x08) goto Next_Pixel; // underwrite
334	*(Pico_mcd->word_ram2M + esi) = (pixel << 4) \| (eax & 0xf);
335	}
336
337
338	Next_Pixel:
339	ecx += rot_comp.DXS;
340	edx += rot_comp.DYS;
341	rot_comp.XD++;
342	if (rot_comp.XD >= 8)
343	{
344	rot_comp.Buffer_Adr += ((rot_comp.Reg_5C & 0x1f) + 1) << 5;
345	rot_comp.XD = 0;
346	}
347	rot_comp.H_Dot--;
348	}
349
350
351	//nothing_to_draw:
352	rot_comp.YD++;
353	// rot_comp.V_Dot--; // will be done by caller
354	}
d1df8786	355
d1df8786	356
cb4a513a	357	void gfx_cd_update(void)
cb4a513a	358	{
d1df8786	359	unsigned char V_Dot = (unsigned char ) &rot_comp.Reg_64;
	360	int jobs;
	361
	362	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
	363
	364	if (!*V_Dot)
	365	{
d1df8786	366	gfx_completed();
	367	return;
	368	}
	369
	370	jobs = rot_comp.Float_Part >> 16;
	371
	372	if (!jobs)
	373	{
	374	rot_comp.Float_Part += rot_comp.Draw_Speed;
	375	return;
	376	}
	377
	378	rot_comp.Float_Part &= 0xffff;
	379	rot_comp.Float_Part += rot_comp.Draw_Speed;
	380
	381	while (jobs--)
	382	{
a4030801	383	if (PicoOpt & 0x1000)
	384	gfx_do(); // jmp [Jmp_Adr]:
	385
	386	(*V_Dot)--; // dec byte [V_Dot]
d1df8786	387
	388	if (!*V_Dot)
	389	{
	390	// GFX_Completed:
	391	gfx_completed();
	392	return;
	393	}
	394	}
cb4a513a	395	}
	396
	397
	398	unsigned int gfx_cd_read(unsigned int a)
	399	{
d1df8786	400	unsigned int d = 0;
	401
	402	switch (a) {
	403	case 0x58: d = rot_comp.Reg_58; break;
	404	case 0x5A: d = rot_comp.Reg_5A; break;
	405	case 0x5C: d = rot_comp.Reg_5C; break;
	406	case 0x5E: d = rot_comp.Reg_5E; break;
	407	case 0x60: d = rot_comp.Reg_60; break;
	408	case 0x62: d = rot_comp.Reg_62; break;
	409	case 0x64: d = rot_comp.Reg_64; break;
	410	case 0x66: break;
fa1e5e29	411	default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
d1df8786	412	}
	413
	414	dprintf("gfx_cd_read(%02x) = %04x", a, d);
cb4a513a	415
cb4a513a	416	return 0;
	417	}
	418
5c69a605	419	void gfx_cd_write16(unsigned int a, unsigned int d)
cb4a513a	420	{
5c69a605	421	dprintf("gfx_cd_write16(%x, %04x)", a, d);
cb4a513a	422
cb4a513a	423	switch (a) {
d1df8786	424	case 0x58: // .Reg_Stamp_Size
	425	rot_comp.Reg_58 = d & 7;
	426	return;
	427
	428	case 0x5A: // .Reg_Stamp_Adr
	429	rot_comp.Reg_5A = d & 0xffe0;
	430	return;
	431
	432	case 0x5C: // .Reg_IM_VCell_Size
	433	rot_comp.Reg_5C = d & 0x1f;
	434	return;
	435
	436	case 0x5E: // .Reg_IM_Adr
	437	rot_comp.Reg_5E = d & 0xFFF8;
	438	return;
	439
	440	case 0x60: // .Reg_IM_Offset
	441	rot_comp.Reg_60 = d & 0x3f;
	442	return;
	443
	444	case 0x62: // .Reg_IM_HDot_Size
	445	rot_comp.Reg_62 = d & 0x1ff;
	446	return;
	447
	448	case 0x64: // .Reg_IM_VDot_Size
	449	rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
	450	return;
	451
	452	case 0x66: // .Reg_Vector_Adr
	453	rot_comp.Reg_66 = d & 0xfffe;
cb4a513a	454	if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
	455	gfx_cd_start();
	456	return;
d1df8786	457
5c69a605	458	default: dprintf("gfx_cd_write16 FIXME: unexpected address: %02x", a); return;
cb4a513a	459	}
	460	}
	461
d1df8786	462
51a902ae	463	void gfx_cd_reset(void)
51a902ae	464	{
fa1e5e29	465	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
	466	}
	467
	468
	469	// --------------------------------
	470
	471	#include "cell_map.c"
	472
	473	typedef unsigned short u16;
	474
0a051f55	475	// check: Heart of the alien, jaguar xj 220
fa1e5e29	476	void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
	477	{
	478	unsigned char *base;
	479	unsigned int asrc, a2;
	480	u16 *r;
	481
	482	base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];
	483
	484	switch (Pico.video.type)
	485	{
	486	case 1: // vram
	487	r = Pico.vram;
	488	for(; len; len--)
	489	{
	490	asrc = cell_map(source >> 2) << 2;
	491	asrc \|= source & 2;
	492	// if(a&1) d=(d<<8)\|(d>>8); // ??
	493	r[a>>1] = (u16 )(base + asrc);
	494	source += 2;
	495	// AutoIncrement
	496	a=(u16)(a+inc);
	497	}
	498	rendstatus\|=0x10;
	499	break;
	500
	501	case 3: // cram
	502	Pico.m.dirtyPal = 1;
	503	r = Pico.cram;
	504	for(a2=a&0x7f; len; len--)
	505	{
	506	asrc = cell_map(source >> 2) << 2;
	507	asrc \|= source & 2;
	508	r[a2>>1] = (u16 )(base + asrc);
	509	source += 2;
	510	// AutoIncrement
	511	a2+=inc;
	512	// good dest?
	513	if(a2 >= 0x80) break;
	514	}
	515	a=(a&0xff00)\|a2;
	516	break;
	517
	518	case 5: // vsram[a&0x003f]=d;
	519	r = Pico.vsram;
	520	for(a2=a&0x7f; len; len--)
	521	{
	522	asrc = cell_map(source >> 2) << 2;
	523	asrc \|= source & 2;
	524	r[a2>>1] = (u16 )(base + asrc);
	525	source += 2;
	526	// AutoIncrement
	527	a2+=inc;
	528	// good dest?
	529	if(a2 >= 0x80) break;
	530	}
	531	a=(a&0xff00)\|a2;
	532	break;
	533	}
	534	// remember addr
	535	Pico.video.addr=(u16)a;
51a902ae	536	}
51a902ae	537