//---------------------------------------------------------------------------
// NEOPOP : Emulator as in Dreamland
//
// Copyright (c) 2001-2002 by neopop_uk
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
//	This program is free software; you can redistribute it and/or modify
//	it under the terms of the GNU General Public License as published by
//	the Free Software Foundation; either version 2 of the License, or
//	(at your option) any later version. See also the license.txt file for
//	additional informations.
//---------------------------------------------------------------------------

#ifndef __NEOPOP_GFX__
#define __NEOPOP_GFX__
//=============================================================================

namespace MDFN_IEN_NGP
{

#define ZDEPTH_BACK_SPRITE 2
#define ZDEPTH_BACKGROUND_SCROLL 3
#define ZDEPTH_MIDDLE_SPRITE 4
#define ZDEPTH_FOREGROUND_SCROLL 5
#define ZDEPTH_FRONT_SPRITE 6

class NGPGFX_CLASS
{
  public:
	NGPGFX_CLASS()
	MDFN_COLD;
	~NGPGFX_CLASS() MDFN_COLD;

	void write8(uint32 address, uint8 data);
	void write16(uint32 address, uint16 data);

	uint8 read8(uint32 address);
	uint16 read16(uint32 address);

	void SetLayerEnableMask(uint64 mask);

	bool draw(MDFN_Surface *surface, bool skip);
	bool hint(void);

	void power(void);

  private:
	// TODO: Alignment for faster memset
	uint8 zbuffer[256];		  //  __attribute__ ((aligned (8)));	//Line z-buffer
	uint16 cfb_scanline[256]; // __attribute__ ((aligned (8)));

	uint8 winx, winw;
	uint8 winy, winh;
	uint8 scroll1x, scroll1y;
	uint8 scroll2x, scroll2y;
	uint8 scrollsprx, scrollspry;
	uint8 planeSwap;
	uint8 bgc, oowc, negative;

	void reset(void);
	void delayed_settings(void);

	void draw_scanline_colour(int, int);
	void drawColourPattern(uint8 screenx, uint16 tile, uint8 tiley, uint16 mirror,
						   uint16 *palette_ptr, uint8 pal, uint8 depth);
	void draw_colour_scroll1(uint8 depth, int ngpc_scanline);
	void draw_colour_scroll2(uint8 depth, int ngpc_scanline);

	void draw_scanline_mono(int, int);
	void MonoPlot(uint8 x, uint8 *palette_ptr, uint16 pal_hi, uint8 index, uint8 depth);
	void drawMonoPattern(uint8 screenx, uint16 tile, uint8 tiley, uint16 mirror,
						 uint8 *palette_ptr, uint16 pal, uint8 depth);
	void draw_mono_scroll1(uint8 depth, int ngpc_scanline);
	void draw_mono_scroll2(uint8 depth, int ngpc_scanline);

	uint8 ScrollVRAM[4096];		  // 9000-9fff
	uint8 CharacterRAM[8192];	 // a000-bfff
	uint8 SpriteVRAM[256];		  // 8800-88ff
	uint8 SpriteVRAMColor[0x40];  // 8C00-8C3F
	uint8 ColorPaletteRAM[0x200]; // 8200-83ff

	uint8 SPPLT[6];
	uint8 SCRP1PLT[6];
	uint8 SCRP2PLT[6];

	uint8 raster_line;
	uint8 S1SO_H, S1SO_V, S2SO_H, S2SO_V;
	uint8 WBA_H, WBA_V, WSI_H, WSI_V;
	bool C_OVR, BLNK;
	uint8 PO_H, PO_V;
	uint8 P_F;
	uint8 BG_COL;
	uint8 CONTROL_2D;
	uint8 CONTROL_INT;
	uint8 SCREEN_PERIOD;
	uint8 K2GE_MODE;

	uint32 ColorMap[4096];

	int layer_enable_setting;
};
}

#endif