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#ifndef __LCD_GB_H__
#define __LCD_GB_H__

#include "defs.h"

struct vissprite
{
	byte *buf;
	int x;
	byte pal, pri, pad[6];
};

struct scan
{
	int bg[64];
	int wnd[64];
#if LCD_DEPTH == 1
    byte buf[8][256];
#elif LCD_DEPTH == 2
    byte buf[4][256];
#elif LCD_DEPTH > 4
    byte buf[256];
#endif
	byte pal1[128];
	un16 pal2[64];
	un32 pal4[64];
	byte pri[256];
	struct vissprite vs[16];
	int ns, l, x, y, s, t, u, v, wx, wy, wt, wv;
};

struct obj
{
	byte y;
	byte x;
	byte pat;
	byte flags;
};

struct lcd
{
	byte vbank[2][8192];
	union
	{
		byte mem[256];
		struct obj obj[40];
	} oam;
	byte pal[128];
};

extern struct lcd lcd;
extern struct scan scan;


void updatepatpix(void) ICODE_ATTR;
void tilebuf(void) ICODE_ATTR;
void bg_scan(void) ICODE_ATTR;
void wnd_scan(void) ICODE_ATTR;
void bg_scan_pri(void) ICODE_ATTR;
void wnd_scan_pri(void) ICODE_ATTR;
void spr_count(void);
void spr_enum(void) ICODE_ATTR;
void spr_scan(void) ICODE_ATTR;
void lcd_begin(void) ICODE_ATTR;
void lcd_refreshline(void) ICODE_ATTR;
void pal_write(int i, byte b) ICODE_ATTR;
void pal_write_dmg(int i, int mapnum, byte d) ICODE_ATTR;
void vram_write(int a, byte b) ICODE_ATTR;
void vram_dirty(void) ICODE_ATTR;
void pal_dirty(void) ICODE_ATTR;
void lcd_reset(void);

#endif