#ifndef GFX_H
#define GFX_H

#include "libsys.h"

#define	GFX_NUM_FRAME_BUFFERS	2
#define	GFX_FRAME_NOSYNC		0
#define	GFX_FRAME_SYNC			1

// -------------------------------------------------------------
// Types
// -------------------------------------------------------------
typedef struct _sbox_t
{
	UINT32 w, h;
	UINT32 *pSave;
} box_t;

typedef struct _srect_t
{
	UINT32 xmin, xmax;
	UINT32 ymin, ymax;
} rect_t;

typedef struct _sbuf_t
{
	UINT32 *pFB;
	struct _sbuf_t *pNext;
	struct _sbuf_t *pLast;
	UINT32 is_dirty;
	rect_t rect;
	UINT32 w, h;
} buf_t;

typedef struct _sgfx_t
{
	UINT32 w, h;
	buf_t *pBuf;
	UINT32 *pBG;

} gfx_t;

// -------------------------------------------------------------
// Functions
// -------------------------------------------------------------
void __gfx_block_set_8(UINT32* pDst, UINT32 value);
void __gfx_block_copy_8(UINT32* pDst, UINT32* pSrc);
void __gfx_copy_32(UINT32* pDst, UINT32* pSrc, UINT32 nblocks);
void GFX_init(gfx_t *pObj);
void GFX_frame(gfx_t *pObj, UINT32 sync_mode);
void GFX_show(gfx_t *pObj);
void GFX_copy_front2back(gfx_t *pObj);
void GFX_copy_back2front(gfx_t *pObj);
void GFX_get_FB_front(gfx_t *pObj, UINT32 **ppFB);
void box_create(box_t *pObj, UINT32 w, UINT32 h);
void GFX_save(gfx_t *pObj, box_t *pBox, UINT32 posx, UINT32 posy);
void GFX_restore(gfx_t *pObj, box_t *pBox, UINT32 posx, UINT32 posy);
void GFX_box_draw(gfx_t *pObj, box_t *pBox, UINT32 posx, UINT32 posy, UINT32 color);

#endif // GFX_H