VGLBitmap *
ch2bmap(uint8_t * sprite, int16_t w, int16_t h)
{
int16_t realw, realh;
VGLBitmap *tmp;
realw = virt2scrw(w * 4);
realh = virt2scrh(h);
tmp = VGLBitmapCreate(MEMBUF, realw, realh, NULL);
tmp->Bitmap = sprite;
return (tmp);
}
void
vgainit(void)
{
{int b=0; while (b);}
if (geteuid() != 0) {
fprintf(stderr, "The current graphics console architecture only permits " \
"super-user to access it, therefore you either have to obtain such permissions" \
"or ask your sysadmin to put set-user-id on digger executable.\n");
exit(1);
}
if (VGLInit(SW_VESA_CG640x400) != 0) {
fprintf(stderr, "WARNING! Could not initialise VESA mode. " \
"Trying to fallback to the VGA 640x480 mode\n");
if (VGLInit(SW_CG640x480) == 0)
yoffset = 40; /* Center the image */
else {
fprintf(stderr, "WARNING! Could not initialise VGA mode either. " \
"Please check your kernel.\n");
exit(1);
}
}
vgl_inited = 1;
sVGLDisplay = VGLBitmapCreate(MEMBUF, 640, 400, NULL);
VGLBitmapAllocateBits(sVGLDisplay);
VGLClear(sVGLDisplay, 0);
/*
* Since the VGL library doesn't provide a default way to restore console
* and keyboard after uncatched by the program signal, we should try to
* catch at least what we could catch and pray to God that he would not
* send SIGKILL to us.
*/
signal(SIGHUP, catcher);
signal(SIGINT, catcher);
signal(SIGQUIT, catcher);
signal(SIGABRT, catcher);
signal(SIGTERM, catcher);
signal(SIGSEGV, catcher);
signal(SIGBUS, catcher);
signal(SIGILL, catcher);
}
void
vgageti(int16_t x, int16_t y, uint8_t * p, int16_t w, int16_t h)
{
struct PendNode *ptr;
VGLBitmap *tmp;
int16_t realx, realy, realh, realw;
memcpy(&tmp, p, (sizeof(VGLBitmap *)));
if (tmp != NULL)
VGLBitmapDestroy(tmp); /* Destroy previously allocated bitmap */
realx = virt2scrx(x);
realy = virt2scry(y);
realw = virt2scrw(w * 4);
realh = virt2scrh(h);
tmp = VGLBitmapCreate(MEMBUF, realw, realh, NULL);
VGLBitmapAllocateBits(tmp);
VGLBitmapCopy(sVGLDisplay, realx, realy, tmp, 0, 0, realw, realh);
memcpy(p, &tmp, (sizeof(VGLBitmap *)));
}
int
main(int argc, char **argv)
{
int y, xsize, ysize, i,j;
VGLBitmap *tmp;
// set graphics mode, here 320x240 256 colors
// supported modes are (from <sys/consio.h>):
// SW_VGA_CG320: std VGA 320x200 256 colors
// SW_VGA_MODEX: Modex VGA 320x240 256 colors
// SW_VGA_VG640: std VGA 640x480 16 colors
VGLInit(SW_VGA_MODEX);
// initialize mouse and show pointer
VGLMouseInit(VGL_MOUSESHOW);
// VGLDisplay is a ptr to a struct Bitmap defined and initialized by
// libvgl. The Bitmap points directly to screen memory etc.
xsize=VGLDisplay->Xsize;
ysize=VGLDisplay->Ysize;
// alloc a new bitmap
tmp = VGLBitmapCreate(MEMBUF, 256, 256, NULL);
VGLBitmapAllocateBits(tmp);
VGLClear(tmp, 0);
// fill the screen with colored lines
for (y=0; y<ysize; y++)
VGLLine(VGLDisplay, 0, y, xsize-1, y, y/2 % 256);
// draw some lines and circles just to show off
VGLLine(VGLDisplay, 0, 0, xsize-1, ysize-1, 63);
VGLLine(VGLDisplay, 0, ysize-1, xsize-1, 0, 63);
VGLLine(VGLDisplay, 0, 0, 0, ysize-1, 63);
VGLLine(VGLDisplay, xsize-1, 0, xsize-1, ysize-1, 63);
VGLEllipse(VGLDisplay, 256, 0, 256, 256, 63);
VGLEllipse(VGLDisplay, 0, 256, 256, 256, 0);
// some text is also useful
VGLBitmapString(VGLDisplay, 100,100,
"This is text", 63, 0, 0, VGL_DIR_RIGHT);
sleep(2);
VGLBitmapString(VGLDisplay, 100,100,
"This is text", 63, 0, 0, VGL_DIR_UP);
sleep(2);
VGLBitmapString(VGLDisplay, 100,100,
"This is text", 63, 0, 0, VGL_DIR_LEFT);
sleep(2);
VGLBitmapString(VGLDisplay, 100,100,
"This is text", 63, 0, 0, VGL_DIR_DOWN);
sleep(2);
// now show some simple bitblit
for (i=0; i<256; i++)
for (j=0; j<256; j++)
tmp->Bitmap[i+256*j] = i%16;
VGLBitmapCopy(tmp, 0, 0, VGLDisplay, 0, 0, 128, 128);
for (i=0; i<256; i++)
for (j=0; j<256; j++)
tmp->Bitmap[i+256*j] = j%16;
VGLBitmapCopy(tmp, 0, 0, VGLDisplay, 3, 128, 128, 128);
sleep(2);
VGLBitmapCopy(VGLDisplay, 237, 311, tmp, 64, 64, 128, 128);
VGLBitmapCopy(tmp, 32, 32, VGLDisplay, 400, 128, 128, 128);
sleep(2);
VGLBitmapCopy(VGLDisplay, 300, 300, VGLDisplay, 500, 128, 128, 128);
sleep(5);
i=0;
// loop around drawing and copying
while (++i) {
VGLBitmapCopy(VGLDisplay, rand()%xsize, rand()%ysize,
VGLDisplay, rand()%xsize, rand()%ysize,
rand()%xsize, rand()%ysize);
VGLLine(VGLDisplay, rand()%xsize, rand()%ysize,
rand()%xsize, rand()%ysize, rand()%256);
VGLEllipse(VGLDisplay, rand()%xsize, rand()%ysize,
rand()%xsize/2, rand()%ysize/2, rand()%256);
rand();
if (i > 1000) break;
}
// restore screen to its original mode
VGLEnd();
return 0;
}
