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Linux程式设计-17.SVGALIB

作者:不祥 [文章出自: www.fanqiang.com]

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式都是用它来做开发，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式，目前来说SVGALIB是您唯一的选择。目前使用SVGALIB的程式有许多，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。

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vga

vgamouse


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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);



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#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   void *extensions;       /* points to copy of eeprom for mach32 */
   /* depends from actual driver/chiptype.. etc. */
} vga_modeinfo;

文章加入时间: 2004-11-17 14:56:34 责任编辑: w9   (2500 人次查阅)