annotate test/testfill.c @ 5133:ec13e48ee0d9

Fixed bug #1112 (retina display support) Vittorio Giovara 2011-02-01 02:21:50 PST with the attached patch, the opengles context will always use the maximum screensize available; this is particularly useful for supporting retina display on latest iphone. please note: Apple documentation warns that using the "upscaled" gl context actually uses more memory and bandwitdh, so it might be worth to let the user decide whether to disable it or not, either with a flag or a sdl function...
author Sam Lantinga <slouken@libsdl.org>
date Tue, 01 Feb 2011 08:54:34 -0800
parents 5ea08f1c29d0
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1 /* Simple program: Fill the screen with colors as fast as possible */
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2
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3 #include <stdlib.h>
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4 #include <stdio.h>
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5 #include <string.h>
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6 #include <time.h>
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7
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8 #include "SDL.h"
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9
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10 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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11 static void
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12 quit(int rc)
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13 {
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14 SDL_Quit();
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15 exit(rc);
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16 }
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17
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18 int
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19 main(int argc, char *argv[])
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20 {
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21 SDL_Surface *screen;
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22 int width, height;
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23 Uint8 video_bpp;
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24 Uint32 videoflags;
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25 Uint32 colors[3];
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26 int i, done;
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27 SDL_Event event;
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28 Uint32 then, now, frames;
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29
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30 /* Initialize SDL */
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31 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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32 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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33 return (1);
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34 }
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35
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36 width = 640;
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37 height = 480;
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38 video_bpp = 8;
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39 videoflags = 0;
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40 while (argc > 1) {
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41 --argc;
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42 if (strcmp(argv[argc - 1], "-width") == 0) {
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43 width = atoi(argv[argc]);
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44 --argc;
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45 } else if (strcmp(argv[argc - 1], "-height") == 0) {
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46 height = atoi(argv[argc]);
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47 --argc;
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48 } else if (strcmp(argv[argc - 1], "-bpp") == 0) {
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49 video_bpp = atoi(argv[argc]);
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50 --argc;
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51 } else if (strcmp(argv[argc], "-fullscreen") == 0) {
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52 videoflags ^= SDL_FULLSCREEN;
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53 } else {
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54 fprintf(stderr,
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55 "Usage: %s [-width N] [-height N] [-bpp N] [-fullscreen]\n",
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56 argv[0]);
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57 quit(1);
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58 }
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59 }
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60
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61 /* Set video mode */
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62 screen = SDL_SetVideoMode(width, height, video_bpp, 0);
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63 if (!screen) {
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64 fprintf(stderr, "Couldn't set %dx%d video mode: %s\n",
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65 width, height, SDL_GetError());
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66 quit(2);
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67 }
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68
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69 /* Get the colors */
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70 colors[0] = SDL_MapRGB(screen->format, 0xFF, 0x00, 0x00);
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71 colors[1] = SDL_MapRGB(screen->format, 0x00, 0xFF, 0x00);
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72 colors[2] = SDL_MapRGB(screen->format, 0x00, 0x00, 0xFF);
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73
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74 /* Loop, filling and waiting for a keystroke */
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75 frames = 0;
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76 then = SDL_GetTicks();
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77 done = 0;
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78 while (!done) {
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79 /* Check for events */
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80 ++frames;
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81 while (SDL_PollEvent(&event)) {
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82 switch (event.type) {
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83 case SDL_MOUSEBUTTONDOWN:
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84 SDL_WarpMouse(screen->w / 2, screen->h / 2);
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85 break;
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86 case SDL_KEYDOWN:
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87 /* Any keypress quits the app... */
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88 case SDL_QUIT:
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89 done = 1;
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90 break;
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91 default:
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92 break;
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93 }
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94 }
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95 SDL_FillRect(screen, NULL, colors[frames%3]);
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96 SDL_Flip(screen);
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97 }
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98
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99 /* Print out some timing information */
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100 now = SDL_GetTicks();
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101 if (now > then) {
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102 double fps = ((double) frames * 1000) / (now - then);
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103 printf("%2.2f frames per second\n", fps);
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104 }
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105 SDL_Quit();
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106 return (0);
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107 }