118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/*
|
|
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely.
|
|
*/
|
|
/* Simple program: Fill the screen with colors as fast as possible */
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#include "SDL.h"
|
|
|
|
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
|
|
static void
|
|
quit(int rc)
|
|
{
|
|
SDL_Quit();
|
|
exit(rc);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
SDL_Surface *screen;
|
|
int width, height;
|
|
Uint8 video_bpp;
|
|
Uint32 videoflags;
|
|
Uint32 colors[3];
|
|
int i, done;
|
|
SDL_Event event;
|
|
Uint32 then, now, frames;
|
|
|
|
/* Initialize SDL */
|
|
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
|
|
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
|
|
return (1);
|
|
}
|
|
|
|
width = 640;
|
|
height = 480;
|
|
video_bpp = 8;
|
|
videoflags = 0;
|
|
while (argc > 1) {
|
|
--argc;
|
|
if (strcmp(argv[argc - 1], "-width") == 0) {
|
|
width = atoi(argv[argc]);
|
|
--argc;
|
|
} else if (strcmp(argv[argc - 1], "-height") == 0) {
|
|
height = atoi(argv[argc]);
|
|
--argc;
|
|
} else if (strcmp(argv[argc - 1], "-bpp") == 0) {
|
|
video_bpp = atoi(argv[argc]);
|
|
--argc;
|
|
} else if (strcmp(argv[argc], "-fullscreen") == 0) {
|
|
videoflags ^= SDL_FULLSCREEN;
|
|
} else {
|
|
fprintf(stderr,
|
|
"Usage: %s [-width N] [-height N] [-bpp N] [-fullscreen]\n",
|
|
argv[0]);
|
|
quit(1);
|
|
}
|
|
}
|
|
|
|
/* Set video mode */
|
|
screen = SDL_SetVideoMode(width, height, video_bpp, 0);
|
|
if (!screen) {
|
|
fprintf(stderr, "Couldn't set %dx%d video mode: %s\n",
|
|
width, height, SDL_GetError());
|
|
quit(2);
|
|
}
|
|
|
|
/* Get the colors */
|
|
colors[0] = SDL_MapRGB(screen->format, 0xFF, 0x00, 0x00);
|
|
colors[1] = SDL_MapRGB(screen->format, 0x00, 0xFF, 0x00);
|
|
colors[2] = SDL_MapRGB(screen->format, 0x00, 0x00, 0xFF);
|
|
|
|
/* Loop, filling and waiting for a keystroke */
|
|
frames = 0;
|
|
then = SDL_GetTicks();
|
|
done = 0;
|
|
while (!done) {
|
|
/* Check for events */
|
|
++frames;
|
|
while (SDL_PollEvent(&event)) {
|
|
switch (event.type) {
|
|
case SDL_MOUSEBUTTONDOWN:
|
|
SDL_WarpMouse(screen->w / 2, screen->h / 2);
|
|
break;
|
|
case SDL_KEYDOWN:
|
|
/* Any keypress quits the app... */
|
|
case SDL_QUIT:
|
|
done = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
SDL_FillRect(screen, NULL, colors[frames%3]);
|
|
SDL_Flip(screen);
|
|
}
|
|
|
|
/* Print out some timing information */
|
|
now = SDL_GetTicks();
|
|
if (now > then) {
|
|
double fps = ((double) frames * 1000) / (now - then);
|
|
printf("%2.2f frames per second\n", fps);
|
|
}
|
|
SDL_Quit();
|
|
return (0);
|
|
}
|