7 static void handle_event(SDL_Event *ev);
8 static void toggle_fullscreen(void);
11 static long start_time;
12 static SDL_Surface *fbsurf;
14 static int fbscale = 2;
16 static unsigned int sdl_flags = SDL_SWSURFACE;
18 int main(int argc, char **argv)
22 unsigned short *sptr, *dptr;
24 if((env = getenv("FBSCALE")) && (s = atoi(env))) {
26 printf("Framebuffer scaling x%d\n", fbscale);
29 xsz = fb_width * fbscale;
30 ysz = fb_height * fbscale;
32 if(!(fb_pixels = malloc(fb_width * fb_height * fb_bpp / CHAR_BIT))) {
33 fprintf(stderr, "failed to allocate virtual framebuffer\n");
36 vmem_front = vmem_back = fb_pixels;
38 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);
39 if(!(fbsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, sdl_flags))) {
40 fprintf(stderr, "failed to set video mode %dx%d %dbpp\n", fb_width, fb_height, fb_bpp);
45 SDL_WM_SetCaption("dosdemo/SDL", 0);
48 if(demo_init(argc, argv) == -1) {
53 start_time = SDL_GetTicks();
57 while(SDL_PollEvent(&ev)) {
59 if(quit) goto break_evloop;
62 time_msec = SDL_GetTicks() - start_time;
65 if(SDL_MUSTLOCK(fbsurf)) {
66 SDL_LockSurface(fbsurf);
70 dptr = (unsigned short*)fbsurf->pixels + (fbsurf->w - xsz) / 2;
71 for(i=0; i<fb_height; i++) {
72 for(j=0; j<fb_width; j++) {
74 unsigned short pixel = *sptr++;
76 for(y=0; y<fbscale; y++) {
77 for(x=0; x<fbscale; x++) {
78 dptr[y * fbsurf->w + x] = pixel;
83 dptr += (fbsurf->w - fb_width) * fbscale;
86 if(SDL_MUSTLOCK(fbsurf)) {
87 SDL_UnlockSurface(fbsurf);
103 void swap_buffers(void *pixels)
105 /* do nothing, all pointers point to the same buffer */
108 static void handle_event(SDL_Event *ev)
117 if(ev->key.keysym.sym == 'f') {
118 if(ev->key.state == SDL_PRESSED) {
123 demo_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED ? 1 : 0);
126 case SDL_MOUSEMOTION:
127 mouse_x = ev->motion.x / fbscale;
128 mouse_y = ev->motion.y / fbscale;
131 case SDL_MOUSEBUTTONDOWN:
132 mouse_bmask |= 1 << (ev->button.button - SDL_BUTTON_LEFT);
134 case SDL_MOUSEBUTTONUP:
135 mouse_bmask &= ~(1 << (ev->button.button - SDL_BUTTON_LEFT));
137 mouse_x = ev->button.x / fbscale;
138 mouse_y = ev->button.y / fbscale;
146 static void toggle_fullscreen(void)
148 SDL_Surface *newsurf;
149 unsigned int newflags = sdl_flags ^ SDL_FULLSCREEN;
151 if(!(newsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, newflags))) {
152 fprintf(stderr, "failed to go %s\n", newflags & SDL_FULLSCREEN ? "fullscreen" : "windowed");
157 sdl_flags = newflags;