This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
testfill.c
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/* 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);
}