10 static void handle_event(SDL_Event *ev);
11 static void toggle_fullscreen(void);
14 static SDL_Surface *fbsurf;
16 static int fbscale = 2;
18 static unsigned int sdl_flags = SDL_SWSURFACE;
20 int main(int argc, char **argv)
24 unsigned short *sptr, *dptr;
26 if((env = getenv("FBSCALE")) && (s = atoi(env))) {
28 printf("Framebuffer scaling x%d\n", fbscale);
31 xsz = fb_width * fbscale;
32 ysz = fb_height * fbscale;
34 /* allocate 1 extra row as a guard band, until we fucking fix the rasterizer */
35 if(!(fb_pixels = malloc(fb_width * (fb_height + 1) * fb_bpp / CHAR_BIT))) {
36 fprintf(stderr, "failed to allocate virtual framebuffer\n");
39 vmem_front = vmem_back = fb_pixels;
41 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_NOPARACHUTE);
42 if(!(fbsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, sdl_flags))) {
43 fprintf(stderr, "failed to set video mode %dx%d %dbpp\n", fb_width, fb_height, fb_bpp);
48 SDL_WM_SetCaption("dosdemo/SDL", 0);
52 if(demo_init(argc, argv) == -1) {
61 while(SDL_PollEvent(&ev)) {
63 if(quit) goto break_evloop;
66 time_msec = get_msec();
70 if(SDL_MUSTLOCK(fbsurf)) {
71 SDL_LockSurface(fbsurf);
75 dptr = (unsigned short*)fbsurf->pixels + (fbsurf->w - xsz) / 2;
76 for(i=0; i<fb_height; i++) {
77 for(j=0; j<fb_width; j++) {
79 unsigned short pixel = *sptr++;
81 for(y=0; y<fbscale; y++) {
82 for(x=0; x<fbscale; x++) {
83 dptr[y * fbsurf->w + x] = pixel;
88 dptr += (fbsurf->w - fb_width) * fbscale;
91 if(SDL_MUSTLOCK(fbsurf)) {
92 SDL_UnlockSurface(fbsurf);
108 void wait_vsync(void)
110 unsigned long start = SDL_GetTicks();
111 unsigned long until = (start | 0xf) + 1;
112 while(SDL_GetTicks() <= until);
115 void swap_buffers(void *pixels)
117 /* do nothing, all pointers point to the same buffer */
123 static int bnmask(int sdlbn)
126 case SDL_BUTTON_LEFT:
127 return MOUSE_BN_LEFT;
128 case SDL_BUTTON_RIGHT:
129 return MOUSE_BN_RIGHT;
130 case SDL_BUTTON_MIDDLE:
131 return MOUSE_BN_MIDDLE;
138 static void handle_event(SDL_Event *ev)
147 if(ev->key.keysym.sym == SDLK_RETURN && (SDL_GetModState() & KMOD_ALT) &&
148 ev->key.state == SDL_PRESSED) {
152 demo_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED ? 1 : 0);
155 case SDL_MOUSEMOTION:
156 mouse_x = ev->motion.x / fbscale;
157 mouse_y = ev->motion.y / fbscale;
160 case SDL_MOUSEBUTTONDOWN:
161 mouse_bmask |= bnmask(ev->button.button);
163 case SDL_MOUSEBUTTONUP:
164 mouse_bmask &= ~bnmask(ev->button.button);
166 mouse_x = ev->button.x / fbscale;
167 mouse_y = ev->button.y / fbscale;
175 static void toggle_fullscreen(void)
177 SDL_Surface *newsurf;
178 unsigned int newflags = sdl_flags ^ SDL_FULLSCREEN;
180 if(!(newsurf = SDL_SetVideoMode(xsz, ysz, fb_bpp, newflags))) {
181 fprintf(stderr, "failed to go %s\n", newflags & SDL_FULLSCREEN ? "fullscreen" : "windowed");
186 sdl_flags = newflags;