[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 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()");

	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

	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)
//{
//}


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--)
	{
		// 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_write(unsigned int a, unsigned int d)
{
	dprintf("gfx_cd_write(%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_write 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;

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;
	47	unsigned int Jmp_Adr;
	48	unsigned int Float_Part;
	49	unsigned int Draw_Speed;
	50
	51	unsigned int XS;
	52	unsigned int YS;
	53	unsigned int DXS;
	54	unsigned int DYS;
	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
	68	upd_len = (rot_comp.Reg_62 >> 3) & 0x3f;
	69	upd_len = Table_Rot_Time[upd_len];
	70
	71	rot_comp.Draw_Speed = rot_comp.Float_Part = upd_len;
	72
	73	rot_comp.Reg_58 \|= 0x8000; // Stamp_Size, we start a new GFX operation
	74
	75	gfx_cd_update();
	76	}
	77
	78
	79	static void gfx_completed(void)
	80	{
	81	rot_comp.Reg_58 &= 0x7fff; // Stamp_Size
	82	rot_comp.Reg_64 = 0;
cb4a513a	83	if (Pico_mcd->s68k_regs[0x33] & (1<<1))
	84	{
	85	dprintf("gfx_cd irq 1");
	86	SekInterruptS68k(1);
	87	}
	88	}
	89
d1df8786	90
	91	//static void gfx_do(void)
	92	//{
	93	//}
	94
	95
cb4a513a	96	void gfx_cd_update(void)
cb4a513a	97	{
d1df8786	98	unsigned char V_Dot = (unsigned char ) &rot_comp.Reg_64;
	99	int jobs;
	100
	101	dprintf("gfx_cd_update, Reg_64 = %04x", rot_comp.Reg_64);
	102
	103	if (!*V_Dot)
	104	{
	105	// ...
	106	gfx_completed();
	107	return;
	108	}
	109
	110	jobs = rot_comp.Float_Part >> 16;
	111
	112	if (!jobs)
	113	{
	114	rot_comp.Float_Part += rot_comp.Draw_Speed;
	115	return;
	116	}
	117
	118	rot_comp.Float_Part &= 0xffff;
	119	rot_comp.Float_Part += rot_comp.Draw_Speed;
	120
	121	while (jobs--)
	122	{
	123	// jmp [Jmp_Adr]:
	124	(*V_Dot)--; // dec byte [V_Dot]
	125
	126	if (!*V_Dot)
	127	{
	128	// GFX_Completed:
	129	gfx_completed();
	130	return;
	131	}
	132	}
cb4a513a	133	}
	134
	135
	136	unsigned int gfx_cd_read(unsigned int a)
	137	{
d1df8786	138	unsigned int d = 0;
	139
	140	switch (a) {
	141	case 0x58: d = rot_comp.Reg_58; break;
	142	case 0x5A: d = rot_comp.Reg_5A; break;
	143	case 0x5C: d = rot_comp.Reg_5C; break;
	144	case 0x5E: d = rot_comp.Reg_5E; break;
	145	case 0x60: d = rot_comp.Reg_60; break;
	146	case 0x62: d = rot_comp.Reg_62; break;
	147	case 0x64: d = rot_comp.Reg_64; break;
	148	case 0x66: break;
fa1e5e29	149	default: dprintf("gfx_cd_read FIXME: unexpected address: %02x", a); break;
d1df8786	150	}
	151
	152	dprintf("gfx_cd_read(%02x) = %04x", a, d);
cb4a513a	153
cb4a513a	154	return 0;
	155	}
	156
	157	void gfx_cd_write(unsigned int a, unsigned int d)
	158	{
	159	dprintf("gfx_cd_write(%x, %04x)", a, d);
	160
	161	switch (a) {
d1df8786	162	case 0x58: // .Reg_Stamp_Size
	163	rot_comp.Reg_58 = d & 7;
	164	return;
	165
	166	case 0x5A: // .Reg_Stamp_Adr
	167	rot_comp.Reg_5A = d & 0xffe0;
	168	return;
	169
	170	case 0x5C: // .Reg_IM_VCell_Size
	171	rot_comp.Reg_5C = d & 0x1f;
	172	return;
	173
	174	case 0x5E: // .Reg_IM_Adr
	175	rot_comp.Reg_5E = d & 0xFFF8;
	176	return;
	177
	178	case 0x60: // .Reg_IM_Offset
	179	rot_comp.Reg_60 = d & 0x3f;
	180	return;
	181
	182	case 0x62: // .Reg_IM_HDot_Size
	183	rot_comp.Reg_62 = d & 0x1ff;
	184	return;
	185
	186	case 0x64: // .Reg_IM_VDot_Size
	187	rot_comp.Reg_64 = d & 0xff; // V_Dot, must be 32bit?
	188	return;
	189
	190	case 0x66: // .Reg_Vector_Adr
	191	rot_comp.Reg_66 = d & 0xfffe;
cb4a513a	192	if (Pico_mcd->s68k_regs[3]&4) return; // can't do tanformations in 1M mode
	193	gfx_cd_start();
	194	return;
d1df8786	195
fa1e5e29	196	default: dprintf("gfx_cd_write FIXME: unexpected address: %02x", a); return;
cb4a513a	197	}
	198	}
	199
d1df8786	200
51a902ae	201	void gfx_cd_reset(void)
51a902ae	202	{
fa1e5e29	203	memset(&rot_comp.Reg_58, 0, sizeof(rot_comp));
	204	}
	205
	206
	207	// --------------------------------
	208
	209	#include "cell_map.c"
	210
	211	typedef unsigned short u16;
	212
	213	void DmaSlowCell(unsigned int source, unsigned int a, int len, unsigned char inc)
	214	{
	215	unsigned char *base;
	216	unsigned int asrc, a2;
	217	u16 *r;
	218
	219	base = Pico_mcd->word_ram1M[Pico_mcd->s68k_regs[3]&1];
	220
	221	switch (Pico.video.type)
	222	{
	223	case 1: // vram
	224	r = Pico.vram;
	225	for(; len; len--)
	226	{
	227	asrc = cell_map(source >> 2) << 2;
	228	asrc \|= source & 2;
	229	// if(a&1) d=(d<<8)\|(d>>8); // ??
	230	r[a>>1] = (u16 )(base + asrc);
	231	source += 2;
	232	// AutoIncrement
	233	a=(u16)(a+inc);
	234	}
	235	rendstatus\|=0x10;
	236	break;
	237
	238	case 3: // cram
	239	Pico.m.dirtyPal = 1;
	240	r = Pico.cram;
	241	for(a2=a&0x7f; len; len--)
	242	{
	243	asrc = cell_map(source >> 2) << 2;
	244	asrc \|= source & 2;
	245	r[a2>>1] = (u16 )(base + asrc);
	246	source += 2;
	247	// AutoIncrement
	248	a2+=inc;
	249	// good dest?
	250	if(a2 >= 0x80) break;
	251	}
	252	a=(a&0xff00)\|a2;
	253	break;
	254
	255	case 5: // vsram[a&0x003f]=d;
	256	r = Pico.vsram;
	257	for(a2=a&0x7f; len; len--)
	258	{
	259	asrc = cell_map(source >> 2) << 2;
	260	asrc \|= source & 2;
	261	r[a2>>1] = (u16 )(base + asrc);
	262	source += 2;
	263	// AutoIncrement
	264	a2+=inc;
	265	// good dest?
	266	if(a2 >= 0x80) break;
267	}
268	a=(a&0xff00)\|a2;
269	break;
270	}
271	// remember addr
272	Pico.video.addr=(u16)a;
51a902ae	273	}
51a902ae	274