8 static void handle_event(SDL_Event *ev);
9 static void toggle_fullscreen(void);
12 static long start_time;
13 static SDL_Surface *fbsurf;
15 static int fbscale = 2;
17 static unsigned int sdl_flags = SDL_SWSURFACE;
19 int main(int argc, char **argv)
23 unsigned short *sptr, *dptr;
25 if((env = getenv("FBSCALE")) && (s = atoi(env))) {
27 printf("Framebuffer scaling x%d\n", fbscale);
30 xsz = fb_width * fbscale;
31 ysz = fb_height * fbscale;
33 if(!(fb_pixels = malloc(fb_width * fb_height * fb_bpp / CHAR_BIT))) {
34 fprintf(stderr, "failed to allocate virtual framebuffer\n");
37 vmem_front = vmem_back = fb_pixels;
39 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);
40 if(!(fbsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, sdl_flags))) {
41 fprintf(stderr, "failed to set video mode %dx%d %dbpp\n", fb_width, fb_height, fb_bpp);
46 SDL_WM_SetCaption("dosdemo/SDL", 0);
49 if(demo_init(argc, argv) == -1) {
54 start_time = SDL_GetTicks();
58 while(SDL_PollEvent(&ev)) {
60 if(quit) goto break_evloop;
63 time_msec = SDL_GetTicks() - start_time;
67 if(SDL_MUSTLOCK(fbsurf)) {
68 SDL_LockSurface(fbsurf);
72 dptr = (unsigned short*)fbsurf->pixels + (fbsurf->w - xsz) / 2;
73 for(i=0; i<fb_height; i++) {
74 for(j=0; j<fb_width; j++) {
76 unsigned short pixel = *sptr++;
78 for(y=0; y<fbscale; y++) {
79 for(x=0; x<fbscale; x++) {
80 dptr[y * fbsurf->w + x] = pixel;
85 dptr += (fbsurf->w - fb_width) * fbscale;
88 if(SDL_MUSTLOCK(fbsurf)) {
89 SDL_UnlockSurface(fbsurf);
105 void swap_buffers(void *pixels)
107 /* do nothing, all pointers point to the same buffer */
110 static void handle_event(SDL_Event *ev)
119 if(ev->key.keysym.sym == 'f') {
120 if(ev->key.state == SDL_PRESSED) {
125 demo_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED ? 1 : 0);
128 case SDL_MOUSEMOTION:
129 mouse_x = ev->motion.x / fbscale;
130 mouse_y = ev->motion.y / fbscale;
133 case SDL_MOUSEBUTTONDOWN:
134 mouse_bmask |= 1 << (ev->button.button - SDL_BUTTON_LEFT);
136 case SDL_MOUSEBUTTONUP:
137 mouse_bmask &= ~(1 << (ev->button.button - SDL_BUTTON_LEFT));
139 mouse_x = ev->button.x / fbscale;
140 mouse_y = ev->button.y / fbscale;
148 static void toggle_fullscreen(void)
150 SDL_Surface *newsurf;
151 unsigned int newflags = sdl_flags ^ SDL_FULLSCREEN;
153 if(!(newsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, newflags))) {
154 fprintf(stderr, "failed to go %s\n", newflags & SDL_FULLSCREEN ? "fullscreen" : "windowed");
159 sdl_flags = newflags;