render.h

DC的SEGA_GG模拟器源代码

#ifndef _RENDER_H_
#define _RENDER_H_

/* Pack RGB data into a 16-bit RGB 5:6:5 format */
//#define MAKE_PIXEL(r,g,b)   (((r << 8) & 0xF800) | ((g << 3) & 0x07E0) | ((b >> 3) & 0x001F))
#define MAKE_PIXEL(r, g, b) ((r >> 3) << 11)| ((g >> 2) << 5)| ((b >> 3) << 0)


/* Used for blanking a line in whole or in part */
#define BACKDROP_COLOR      (0x10 | (vdp.reg[7] & 0x0F))

/* Global data - used by 'vdp.c' */
extern byte vram_dirty[0x200];
extern byte is_vram_dirty;

/* Function prototypes */
void render_init(void);
void render_reset(void);
void render_bg_gg(int line);
void render_bg_sms(int line);
void render_obj(int line);
void render_line(int line);
void update_cache(void);
void palette_sync(int index);
void remap_8_to_16(int line);

#endif /* _RENDER_H_ */