/****************************************************************************
REMARKS:
Load the SNAP driver and intialise it.
****************************************************************************/
static GA_devCtx *LoadDriver(
int deviceIndex)
{
GA_devCtx *dc;
/* Save the state of the console */
hwndConsole = PM_openConsole(0,0,640,480,8,true);
if ((stateBuf = malloc(PM_getConsoleStateSize())) == NULL)
PM_fatalError("Out of memory!");
PM_saveConsoleState(stateBuf,hwndConsole);
/* Register our fatal error cleanup handler */
PM_setFatalErrorCleanup(Cleanup);
/* Load the driver */
if ((dc = GA_loadDriver(deviceIndex,false)) == NULL)
PM_fatalError(GA_errorMsg(GA_status()));
init.dwSize = sizeof(init);
if (!GA_queryFunctions(dc,GA_GET_INITFUNCS,&init))
PM_fatalError("Unable to get device driver functions!");
/* Cleanup. We do this here because we know that we will not
* be setting any graphics modes after loading the driver,
* so we can properly restore the console state and make calls
* to non-destructive functions in the driver before we unload
* it.
*/
Cleanup();
return dc;
}
/****************************************************************************
REMARKS:
Main routine. Expects the x & y resolution of the desired video mode
to be passed on the command line. Will print out a list of available
video modes if no command line is present.
****************************************************************************/
int main(
int argc,
char *argv[])
{
/* Check to see if we are running in a window */
if (PM_runningInAWindow()) {
printf("This program cannot run in a window. Please switch to a fullscreen mode.\n");
return -1;
}
/* Save the state of the console */
hwndConsole = PM_openConsole(0,0,640,480,8,true);
if ((stateBuf = malloc(PM_getConsoleStateSize())) == NULL)
PM_fatalError("Out of memory!");
PM_saveConsoleState(stateBuf,hwndConsole);
/* Register our fatal error cleanup handler */
PM_setFatalErrorCleanup(FatalErrorCleanup);
/* Register the ISV license file if desired */
#ifdef ISV_LICENSE
GA_registerLicense(OemLicense,false);
#endif
/* Load the device driver for this device */
if ((dc = GA_loadDriver(0,false)) == NULL)
PM_fatalError(GA_errorMsg(GA_status()));
init.dwSize = sizeof(init);
if (!GA_queryFunctions(dc,GA_GET_INITFUNCS,&init))
PM_fatalError("Unable to get device driver functions!");
driver.dwSize = sizeof(driver);
if (!GA_queryFunctions(dc,GA_GET_DRIVERFUNCS,&driver))
PM_fatalError("Unable to get device driver functions!");
/* Display available modes for invalid command line */
if (argc != 4) {
/* Restore the console */
PM_restoreConsoleState(stateBuf,hwndConsole);
PM_closeConsole(hwndConsole);
AvailableModes();
GA_unloadDriver(dc);
return 0;
}
/* Get requested resolution, start graphics and draw pattern */
xRes = atoi(argv[1]);
yRes = atoi(argv[2]);
bpp = atoi(argv[3]);
if ((oldMode = InitGraphics(xRes,yRes,bpp)) != -1) {
DrawMoire();
PM_getch();
virtualX = virtualY = bytesPerLine = -1;
init.SetVideoMode(oldMode,&virtualX,&virtualY,&bytesPerLine,&maxMem,0,NULL);
}
/* Restore the console */
ExitSoftwareRasterizer();
PM_restoreConsoleState(stateBuf,hwndConsole);
PM_closeConsole(hwndConsole);
/* Unload the device driver */
GA_unloadDriver(dc);
if (oldMode == -1)
printf("Unable to find specified graphics mode, or error starting mode.\n");
return 0;
}