void LoadPalette(void)
/* Apre il file 256color.pal e carica i valori RGB usati per la palette */
/* assegnandoli a valori compresi tra 0 e 255 tramite la funzione */
/* gl_setpalettecolor(int num_color, int r, int g, int b); */
{
int i;
FILE *file_pointer;
file_pointer = fopen(PALETTE_FILE, "rb");
if(file_pointer == NULL) {
printf(" Si e' verificato un errore durante l'apertura del file :\n");
printf(" 256color.pal\n");
exit(0);
}
for(i=0;i<NUM_COLOR;i++) {
fseek(file_pointer, i*sizeof(struct color), SEEK_SET);
fread(&Color, sizeof(struct color), 1, file_pointer);
gl_setpalettecolor(i, Color.r, Color.g, Color.b);
}
}
bool screen_init (void)
{
#ifdef LINUXFB
use_fb = 1;
if (fb_init ())
{
use_fb = 0;
return false;
}
#endif
#ifdef VGALIB
use_fb = 0;
vga_init ();
vga_setmode(DEFAULT_VGA_MODE);
gl_setcontextvga(DEFAULT_VGA_MODE);
physical_screen = gl_allocatecontext();
gl_getcontext(physical_screen);
gl_setcontextvgavirtual(DEFAULT_VGA_MODE);
virtual_screen = gl_allocatecontext();
gl_getcontext(virtual_screen);
gl_setcontext(virtual_screen);
//vga_ext_set(VGA_EXT_SET, VGA_CLUT8);
// color table:
// http://en.wikipedia.org/wiki/ANSI_escape_code#Colors
gl_setpalettecolor(BLUE, 0, 0, 63); // blue
gl_setpalettecolor(BLACK, 0, 0, 0); // black
gl_setpalettecolor(GREEN, 0, 63, 0);
gl_setpalettecolor(RED, 63, 0, 0);
gl_setpalettecolor(BROWN, 170/4, 85/4, 0);
gl_setpalettecolor(MAGENTA, 170/4, 0, 170/4);
gl_setpalettecolor(CYAN, 0, 170/4, 170/4);
gl_setpalettecolor(GRAY, 48, 48, 48);
gl_setpalettecolor(LIGHTBLACK, 85/4, 85/4, 85/4);
gl_setpalettecolor(LIGHTBLUE, 85/4, 85/4, 255/4);
gl_setpalettecolor(LIGHTGREEN, 85/4, 255/4, 85/4);
gl_setpalettecolor(LIGHTCYAN, 85/4, 255/4, 255/4);
gl_setpalettecolor(LIGHTRED, 25/45/4, 85/4, 85/4);
gl_setpalettecolor(LIGHTMAGENTA, 255/4, 85/4, 255/4);
gl_setpalettecolor(LIGHTBROWN, 255/4, 255/4, 85/4);
#endif
active_console = 1;
return true;
}
/* ---------------------------------------------------------------------- *
* Public Functions
* ---------------------------------------------------------------------- */
void
load_start_image (void)
{
#ifdef LC_X11
XColor pal[256];
XEvent xev;
#endif
long x, y, l, r, g, b;
gzFile fp;
fp = gzopen( opening_pic, "r" );
if (fp == NULL) {
return;
}
for (x = 0; x < 7; x++)
l = gzgetc (fp);
l &= 0xff;
if (l == 0)
l = 256;
for (x = 0; x < l; x++)
{
r = gzgetc (fp);
g = gzgetc (fp);
b = gzgetc (fp);
#ifdef LC_X11
pal[x].red = r;
pal[x].green = g;
pal[x].blue = b;
pal[x].flags = DoRed | DoGreen | DoBlue;
#elif defined LC_SVGA
gl_setpalettecolor (x, r, g, b);
#endif
}
/* use last 4 colours for text */
#ifdef LC_X11
pal[SI_BLACK].red = 0;
pal[SI_BLACK].green = 0;
pal[SI_BLACK].blue = 0;
pal[SI_BLACK].flags = DoRed | DoGreen | DoBlue;
pal[SI_RED].red = 60;
pal[SI_RED].green = 0;
pal[SI_RED].blue = 0;
pal[SI_RED].flags = DoRed | DoGreen | DoBlue;
pal[SI_GREEN].red = 0;
pal[SI_GREEN].green = 60;
pal[SI_GREEN].blue = 0;
pal[SI_GREEN].flags = DoRed | DoGreen | DoBlue;
pal[SI_YELLOW].red = 60;
pal[SI_YELLOW].green = 60;
pal[SI_YELLOW].blue = 0;
pal[SI_YELLOW].flags = DoRed | DoGreen | DoBlue;
open_setcustompalette (pal);
suppress_next_expose = 1;
do
{
while (XPending (display.dpy) == 0);
XNextEvent (display.dpy, &xev);
HandleEvent (&xev);
}
while (xev.type != MapNotify);
#elif defined LC_SVGA
gl_setpalettecolor (SI_BLACK, 0, 0, 0);
gl_setpalettecolor (SI_RED, 60, 0, 0);
gl_setpalettecolor (SI_GREEN, 0, 60, 0);
gl_setpalettecolor (SI_YELLOW, 60, 60, 0);
#endif
#if defined (WIN32)
UpdatePalette ();
#endif
for (y = 0; y < 480; y++)
for (x = 0; x < 640; x++)
{
l = gzgetc (fp);
/*
// printf("l=%d x=%d y=%d ",l,x,y);
// octree doesn't seem to want to generate images with 252 colours!
// So the next best thing (well the easyest) is to just map the pixels
// coloured as the last 4 colours to the 4 before that.
// If it looks OK, leave it.
*/
if (l == SI_BLACK)
l = SI_BLACK - 4;
if (l == SI_RED)
l = SI_RED - 4;
if (l == SI_GREEN)
l = SI_GREEN - 4;
if (l == SI_YELLOW)
l = SI_YELLOW - 4;
Fgl_setpixel (x, y, l);
}
gzclose(fp);
#if defined (WIN32)
RefreshScreen ();
#endif
start_image_text ();
}
void Graphic::init_graph_mode()
{
#ifdef SVGALIB
vga_init();
int vga_mode=G640x480x16M;
vga_setmode(vga_mode);
gl_setcontextvga(vga_mode);
#endif
#if 0
gl_setpalettecolor(BLUE, 0, 0, 63); // blue
gl_setpalettecolor(BLACK, 0, 0, 0); // black
gl_setpalettecolor(GREEN, 0, 63, 0);
gl_setpalettecolor(RED, 63, 0, 0);
gl_setpalettecolor(BROWN, 170/4, 85/4, 0);
gl_setpalettecolor(MAGENTA, 170/4, 0, 170/4);
gl_setpalettecolor(CYAN, 0, 170/4, 170/4);
gl_setpalettecolor(GRAY, 48, 48, 48);
gl_setpalettecolor(LIGHTBLACK, 85/4, 85/4, 85/4);
gl_setpalettecolor(LIGHTBLUE, 85/4, 85/4, 255/4);
gl_setpalettecolor(LIGHTGREEN, 85/4, 255/4, 85/4);
gl_setpalettecolor(LIGHTCYAN, 85/4, 255/4, 255/4);
gl_setpalettecolor(LIGHTRED, 25/45/4, 85/4, 85/4);
gl_setpalettecolor(LIGHTMAGENTA, 255/4, 85/4, 255/4);
gl_setpalettecolor(LIGHTBROWN, 255/4, 255/4, 85/4);
#endif
}
void SetPaletteColor(unsigned char color,
unsigned char red,
unsigned char green,
unsigned char blue) {
gl_setpalettecolor(color, red, green, blue);
}
