7 static void handle_event(SDL_Event *ev);
10 static long start_time;
11 static SDL_Surface *fbsurf;
13 static int fbscale = 2;
16 int main(int argc, char **argv)
20 unsigned short *sptr, *dptr;
21 unsigned int sdl_flags = SDL_SWSURFACE;
23 if((env = getenv("FBSCALE")) && (s = atoi(env))) {
25 printf("Framebuffer scaling x%d\n", fbscale);
28 xsz = fb_width * fbscale;
29 ysz = fb_height * fbscale;
31 if(!(fb_pixels = malloc(fb_width * fb_height * fb_bpp / CHAR_BIT))) {
32 fprintf(stderr, "failed to allocate virtual framebuffer\n");
35 vmem_front = vmem_back = fb_pixels;
37 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);
38 if(!(fbsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, sdl_flags))) {
39 fprintf(stderr, "failed to set video mode %dx%d %dbpp\n", fb_width, fb_height, fb_bpp);
44 SDL_WM_SetCaption("dosdemo/SDL", 0);
47 if(demo_init(argc, argv) == -1) {
52 start_time = SDL_GetTicks();
56 while(SDL_PollEvent(&ev)) {
58 if(quit) goto break_evloop;
61 time_msec = SDL_GetTicks() - start_time;
64 if(SDL_MUSTLOCK(fbsurf)) {
65 SDL_LockSurface(fbsurf);
69 dptr = fbsurf->pixels;
70 for(i=0; i<fb_height; i++) {
71 for(j=0; j<fb_width; j++) {
73 unsigned short pixel = *sptr++;
75 for(y=0; y<fbscale; y++) {
76 for(x=0; x<fbscale; x++) {
77 dptr[y * xsz + x] = pixel;
82 dptr += xsz * (fbscale - 1);
85 if(SDL_MUSTLOCK(fbsurf)) {
86 SDL_UnlockSurface(fbsurf);
102 void swap_buffers(void *pixels)
104 /* do nothing, all pointers point to the same buffer */
107 static void handle_event(SDL_Event *ev)
116 demo_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED ? 1 : 0);
119 case SDL_MOUSEMOTION:
120 mouse_x = ev->motion.x / fbscale;
121 mouse_y = ev->motion.y / fbscale;
124 case SDL_MOUSEBUTTONDOWN:
125 mouse_bmask |= 1 << ev->button.button;
127 case SDL_MOUSEBUTTONUP:
128 mouse_bmask &= ~(1 << ev->button.button);
130 mouse_x = ev->button.x / fbscale;
131 mouse_y = ev->button.y / fbscale;