slouken@3576: /* Simple program:  Fill the screen with colors as fast as possible */
slouken@3576: 
slouken@3576: #include <stdlib.h>
slouken@3576: #include <stdio.h>
slouken@3576: #include <string.h>
slouken@3576: #include <time.h>
slouken@3576: 
slouken@3576: #include "SDL.h"
slouken@3576: 
slouken@3576: /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
slouken@3576: static void
slouken@3576: quit(int rc)
slouken@3576: {
slouken@3576:     SDL_Quit();
slouken@3576:     exit(rc);
slouken@3576: }
slouken@3576: 
slouken@3576: int
slouken@3576: main(int argc, char *argv[])
slouken@3576: {
slouken@3576:     SDL_Surface *screen;
slouken@3576:     int width, height;
slouken@3576:     Uint8 video_bpp;
slouken@3576:     Uint32 videoflags;
slouken@3576:     Uint32 colors[3];
slouken@3576:     int i, done;
slouken@3576:     SDL_Event event;
slouken@3576:     Uint32 then, now, frames;
slouken@3576: 
slouken@3576:     /* Initialize SDL */
slouken@3576:     if (SDL_Init(SDL_INIT_VIDEO) < 0) {
slouken@3576:         fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
slouken@3576:         return (1);
slouken@3576:     }
slouken@3576: 
slouken@3576:     width = 640;
slouken@3576:     height = 480;
slouken@3576:     video_bpp = 8;
slouken@3576:     videoflags = 0;
slouken@3576:     while (argc > 1) {
slouken@3576:         --argc;
slouken@3576:         if (strcmp(argv[argc - 1], "-width") == 0) {
slouken@3576:             width = atoi(argv[argc]);
slouken@3576:             --argc;
slouken@3576:         } else if (strcmp(argv[argc - 1], "-height") == 0) {
slouken@3576:             height = atoi(argv[argc]);
slouken@3576:             --argc;
slouken@3576:         } else if (strcmp(argv[argc - 1], "-bpp") == 0) {
slouken@3576:             video_bpp = atoi(argv[argc]);
slouken@3576:             --argc;
slouken@3576:         } else if (strcmp(argv[argc], "-fullscreen") == 0) {
slouken@3576:             videoflags ^= SDL_FULLSCREEN;
slouken@3576:         } else {
slouken@3576:             fprintf(stderr,
slouken@3576:                     "Usage: %s [-width N] [-height N] [-bpp N] [-fullscreen]\n",
slouken@3576:                     argv[0]);
slouken@3576:             quit(1);
slouken@3576:         }
slouken@3576:     }
slouken@3576: 
slouken@3576:     /* Set video mode */
slouken@3576:     screen = SDL_SetVideoMode(width, height, video_bpp, 0);
slouken@3576:     if (!screen) {
slouken@3576:         fprintf(stderr, "Couldn't set %dx%d video mode: %s\n",
slouken@3576:                 width, height, SDL_GetError());
slouken@3576:         quit(2);
slouken@3576:     }
slouken@3576: 
slouken@3576:     /* Get the colors */
slouken@3576:     colors[0] = SDL_MapRGB(screen->format, 0xFF, 0x00, 0x00);
slouken@3576:     colors[1] = SDL_MapRGB(screen->format, 0x00, 0xFF, 0x00);
slouken@3576:     colors[2] = SDL_MapRGB(screen->format, 0x00, 0x00, 0xFF);
slouken@3576: 
slouken@3576:     /* Loop, filling and waiting for a keystroke */
slouken@3576:     frames = 0;
slouken@3576:     then = SDL_GetTicks();
slouken@3576:     done = 0;
slouken@3576:     while (!done) {
slouken@3576:         /* Check for events */
slouken@3576:         ++frames;
slouken@3576:         while (SDL_PollEvent(&event)) {
slouken@3576:             switch (event.type) {
slouken@3576:             case SDL_MOUSEBUTTONDOWN:
slouken@3576:                 SDL_WarpMouse(screen->w / 2, screen->h / 2);
slouken@3576:                 break;
slouken@3576:             case SDL_KEYDOWN:
slouken@3576:                 /* Any keypress quits the app... */
slouken@3576:             case SDL_QUIT:
slouken@3576:                 done = 1;
slouken@3576:                 break;
slouken@3576:             default:
slouken@3576:                 break;
slouken@3576:             }
slouken@3576:         }
slouken@3576:         SDL_FillRect(screen, NULL, colors[frames%3]);
slouken@3576:         SDL_Flip(screen);
slouken@3576:     }
slouken@3576: 
slouken@3576:     /* Print out some timing information */
slouken@3576:     now = SDL_GetTicks();
slouken@3576:     if (now > then) {
slouken@3576:         double fps = ((double) frames * 1000) / (now - then);
slouken@3576:         printf("%2.2f frames per second\n", fps);
slouken@3576:     }
slouken@3576:     SDL_Quit();
slouken@3576:     return (0);
slouken@3576: }