Linux程序设计入门 - SVGALIB

  SvgaLib是Linux Console下的VGA驱动函数库。虽然它的品质还是有点低，支援

  的萤幕卡种类不算太多，但是有许多的游戏及程序都是用它来做开发，可以算

  是非官方的标准了。如果您准备要在Console下撰写图形功能的程序，目前来说

  SVGALIB是您唯一的选择。目前使用SVGALIB的程序有许多，中文终端机使用

  SVGALIB的就有a4c.tty/yact/bcs16。


  这里我只讲一些简单的使用方法，如启动vga及mouse的使用。要有效地、高阶

  的运用，技巧复杂很多，例如a4c.tty就另外往上架一层Star Window

  Manager，来管理一个小型视窗系统。


  vga




  vgamouse




  int vga_setmode(int mode);

  int vga_hasmode(int mode);

  int vga_setpalette(int index, int red, int green, int blue);

  int vga_getpalette(int index, int *red, int *green, int *blue);

  int vga_setcolor(int color);

  int vga_drawpixel(int x, int y);

  int vga_drawline(int x1, int y1, int x2, int y2);

  int vga_getpixel(int x, int y);

  vga_modeinfo *vga_getmodeinfo(int mode);


  unsigned char *graph_mem;

  unsigned char *vga_getgraphmem(void);


  void vga_setpage(int p);

  void vga_setreadpage(int p);

  void vga_setreadpage(int p);

  void vga_setwritepage(int p);

  void vga_setdisplaystart(int a);

  void vga_waitretrace(void);

  int vga_init(void);

  int vga_setrgbcolor(int r, int g, int b);






  #define TEXT         0          /* Compatible with VGAlib v1.2 */

  #define G320x200x16  1

  #define G640x200x16  2

  #define G640x350x16  3

  #define G640x480x16  4

  #define G320x200x256 5

  #define G320x240x256 6

  #define G320x400x256 7

  #define G360x480x256 8

  #define G640x480x2   9


  #define G640x480x256 10

  #define G800x600x256 11

  #define G1024x768x256 12


  #define G1280x1024x256 13       /* Additional modes. */


  #define G320x200x32K 14

  #define G320x200x64K 15

  #define G320x200x16M 16

  #define G640x480x32K 17

  #define G640x480x64K 18

  #define G640x480x16M 19

  #define G800x600x32K 20

  #define G800x600x64K 21

  #define G800x600x16M 22

  #define G1024x768x32K 23

  #define G1024x768x64K 24

  #define G1024x768x16M 25

  #define G1280x1024x32K 26

  #define G1280x1024x64K 27

  #define G1280x1024x16M 28


  #define G800x600x16 29

  #define G1024x768x16 30

  #define G1280x1024x16 31


  #define G720x348x2 32           /* Hercules emulation mode */


  #define G320x200x16M32 33       /* 32-bit per pixel modes. */

  #define G640x480x16M32 34

  #define G800x600x16M32 35

  #define G1024x768x16M32 36

  #define G1280x1024x16M32 37


  /* additional resolutions */

  #define G1152x864x16 38

  #define G1152x864x256 39

  #define G1152x864x32K 40

  #define G1152x864x64K 41

  #define G1152x864x16M 42

  #define G1152x864x16M32 43


  #define G1600x1200x16 44

  #define G1600x1200x256 45

  #define G1600x1200x32K 46

  #define G1600x1200x64K 47

  #define G1600x1200x16M 48

  #define G1600x1200x16M32 49


  typedef struct {

     int width;

     int height;

     int bytesperpixel;

     int colors;

     int linewidth;          /* scanline width in bytes */

     int maxlogicalwidth;    /* maximum logical scanline width */

     int startaddressrange;  /* changeable bits set */

     int maxpixels;          /* video memory / bytesperpixel */

     int haveblit;           /* mask of blit functions available */

     int flags;              /* other flags */



     /* Extended fields: */



     int chiptype;           /* Chiptype detected */

     int memory;             /* videomemory in KB */

     int linewidth_unit;     /* Use only a multiple of this as

  parameter for set_displaystart */

     char *linear_aperture;  /* points to mmap secondary mem aperture

  of car

     int aperture_size;      /* size of aperture in KB if

  size>=videomemory.

     void (*set_aperture_page) (int page);

     /* if aperture_size<videomemory select a memory page */

     void *extensions;       /* points to copy of eeprom for mach32 */

     /* depends from actual driver/chiptype.. etc. */

  } vga_modeinfo;


  OK STATION, Webmaster, Brian Lin