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annotate test/testwin.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents 14717b52abc0
children 4da1ee79c9af
rev   line source
0
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1
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2 /* Bring up a window and play with it */
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3
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4 #include <stdlib.h>
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5 #include <stdio.h>
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6 #include <string.h>
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7
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8 #define BENCHMARK_SDL
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9
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10 #define NOTICE(X) printf("%s", X);
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11
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12 #include "SDL.h"
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13
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14 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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15 static void
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16 quit (int rc)
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17 {
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18 SDL_Quit ();
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19 exit (rc);
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20 }
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21
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22 void
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23 DrawPict (SDL_Surface * screen, char *bmpfile,
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24 int speedy, int flip, int nofade)
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25 {
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26 SDL_Surface *picture;
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27 SDL_Rect dest, update;
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28 int i, centered;
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29 int ncolors;
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30 SDL_Color *colors, *cmap;
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31
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32 /* Load the image into a surface */
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33 if (bmpfile == NULL) {
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34 bmpfile = "sample.bmp"; /* Sample image */
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35 }
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36 fprintf (stderr, "Loading picture: %s\n", bmpfile);
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37 picture = SDL_LoadBMP (bmpfile);
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38 if (picture == NULL) {
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39 fprintf (stderr, "Couldn't load %s: %s\n", bmpfile, SDL_GetError ());
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40 return;
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41 }
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42
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43 /* Set the display colors -- on a hicolor display this is a no-op */
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44 if (picture->format->palette) {
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45 ncolors = picture->format->palette->ncolors;
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46 colors = (SDL_Color *) malloc (ncolors * sizeof (SDL_Color));
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47 cmap = (SDL_Color *) malloc (ncolors * sizeof (SDL_Color));
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48 memcpy (colors, picture->format->palette->colors,
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49 ncolors * sizeof (SDL_Color));
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50 } else {
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51 int r, g, b;
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52
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53 /* Allocate 256 color palette */
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54 ncolors = 256;
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55 colors = (SDL_Color *) malloc (ncolors * sizeof (SDL_Color));
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56 cmap = (SDL_Color *) malloc (ncolors * sizeof (SDL_Color));
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57
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58 /* Set a 3,3,2 color cube */
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59 for (r = 0; r < 8; ++r) {
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60 for (g = 0; g < 8; ++g) {
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61 for (b = 0; b < 4; ++b) {
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62 i = ((r << 5) | (g << 2) | b);
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63 colors[i].r = r << 5;
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64 colors[i].g = g << 5;
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65 colors[i].b = b << 6;
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66 }
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67 }
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68 }
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69 }
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70 NOTICE ("testwin: setting colors\n");
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71 if (!SDL_SetColors (screen, colors, 0, ncolors) &&
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72 (screen->format->palette != NULL)) {
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73 fprintf (stderr,
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74 "Warning: Couldn't set all of the colors, but SDL will map the image\n"
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75 " (colormap fading will suffer - try the -warp option)\n");
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76 }
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77
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78 /* Set the screen to black (not really necessary) */
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79 if (SDL_LockSurface (screen) == 0) {
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80 Uint32 black;
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81 Uint8 *pixels;
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82
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83 black = SDL_MapRGB (screen->format, 0, 0, 0);
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84 pixels = (Uint8 *) screen->pixels;
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85 for (i = 0; i < screen->h; ++i) {
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86 memset (pixels, black, screen->w * screen->format->BytesPerPixel);
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87 pixels += screen->pitch;
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88 }
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89 SDL_UnlockSurface (screen);
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90 SDL_UpdateRect (screen, 0, 0, 0, 0);
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91 }
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92
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93 /* Display the picture */
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94 if (speedy) {
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95 SDL_Surface *displayfmt;
0
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96
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97 fprintf (stderr, "Converting picture\n");
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98 displayfmt = SDL_DisplayFormat (picture);
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99 if (displayfmt == NULL) {
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100 fprintf (stderr, "Couldn't convert image: %s\n", SDL_GetError ());
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101 goto done;
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102 }
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103 SDL_FreeSurface (picture);
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104 picture = displayfmt;
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105 }
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106 printf ("(image surface located in %s memory)\n",
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107 (picture->flags & SDL_HWSURFACE) ? "video" : "system");
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108 centered = (screen->w - picture->w) / 2;
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109 if (centered < 0) {
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110 centered = 0;
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111 }
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112 dest.y = (screen->h - picture->h) / 2;
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113 dest.w = picture->w;
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114 dest.h = picture->h;
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115 NOTICE ("testwin: moving image\n");
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116 for (i = 0; i <= centered; ++i) {
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117 dest.x = i;
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118 update = dest;
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119 if (SDL_BlitSurface (picture, NULL, screen, &update) < 0) {
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120 fprintf (stderr, "Blit failed: %s\n", SDL_GetError ());
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121 break;
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122 }
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123 if (flip) {
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124 SDL_Flip (screen);
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125 } else {
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126 SDL_UpdateRects (screen, 1, &update);
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127 }
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128 }
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129
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130 #ifdef SCREENSHOT
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131 if (SDL_SaveBMP (screen, "screen.bmp") < 0)
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132 printf ("Couldn't save screen: %s\n", SDL_GetError ());
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133 #endif
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134
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135 #ifndef BENCHMARK_SDL
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136 /* Let it sit there for a while */
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137 SDL_Delay (5 * 1000);
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138 #endif
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139 /* Fade the colormap */
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140 if (!nofade) {
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141 int maxstep;
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142 SDL_Color final;
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143 SDL_Color palcolors[256];
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144 struct
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145 {
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146 Sint16 r, g, b;
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147 } cdist[256];
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148
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149 NOTICE ("testwin: fading out...\n");
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150 memcpy (cmap, colors, ncolors * sizeof (SDL_Color));
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151 maxstep = 32 - 1;
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152 final.r = 0xFF;
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153 final.g = 0x00;
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154 final.b = 0x00;
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155 memcpy (palcolors, colors, ncolors * sizeof (SDL_Color));
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156 for (i = 0; i < ncolors; ++i) {
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157 cdist[i].r = final.r - palcolors[i].r;
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158 cdist[i].g = final.g - palcolors[i].g;
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159 cdist[i].b = final.b - palcolors[i].b;
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160 }
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161 for (i = 0; i <= maxstep / 2; ++i) { /* halfway fade */
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162 int c;
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163 for (c = 0; c < ncolors; ++c) {
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164 colors[c].r = palcolors[c].r + ((cdist[c].r * i)) / maxstep;
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165 colors[c].g = palcolors[c].g + ((cdist[c].g * i)) / maxstep;
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166 colors[c].b = palcolors[c].b + ((cdist[c].b * i)) / maxstep;
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167 }
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168 SDL_SetColors (screen, colors, 0, ncolors);
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169 SDL_Delay (1);
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170 }
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171 final.r = 0x00;
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172 final.g = 0x00;
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173 final.b = 0x00;
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174 memcpy (palcolors, colors, ncolors * sizeof (SDL_Color));
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175 for (i = 0; i < ncolors; ++i) {
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176 cdist[i].r = final.r - palcolors[i].r;
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177 cdist[i].g = final.g - palcolors[i].g;
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178 cdist[i].b = final.b - palcolors[i].b;
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179 }
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180 maxstep /= 2;
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181 for (i = 0; i <= maxstep; ++i) { /* finish fade out */
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182 int c;
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183 for (c = 0; c < ncolors; ++c) {
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184 colors[c].r = palcolors[c].r + ((cdist[c].r * i)) / maxstep;
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185 colors[c].g = palcolors[c].g + ((cdist[c].g * i)) / maxstep;
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186 colors[c].b = palcolors[c].b + ((cdist[c].b * i)) / maxstep;
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187 }
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188 SDL_SetColors (screen, colors, 0, ncolors);
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189 SDL_Delay (1);
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190 }
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191 for (i = 0; i < ncolors; ++i) {
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192 colors[i].r = final.r;
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193 colors[i].g = final.g;
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194 colors[i].b = final.b;
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195 }
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196 SDL_SetColors (screen, colors, 0, ncolors);
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197 NOTICE ("testwin: fading in...\n");
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198 memcpy (palcolors, colors, ncolors * sizeof (SDL_Color));
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199 for (i = 0; i < ncolors; ++i) {
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200 cdist[i].r = cmap[i].r - palcolors[i].r;
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201 cdist[i].g = cmap[i].g - palcolors[i].g;
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202 cdist[i].b = cmap[i].b - palcolors[i].b;
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203 }
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204 for (i = 0; i <= maxstep; ++i) { /* 32 step fade in */
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205 int c;
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206 for (c = 0; c < ncolors; ++c) {
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207 colors[c].r = palcolors[c].r + ((cdist[c].r * i)) / maxstep;
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208 colors[c].g = palcolors[c].g + ((cdist[c].g * i)) / maxstep;
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209 colors[c].b = palcolors[c].b + ((cdist[c].b * i)) / maxstep;
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210 }
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211 SDL_SetColors (screen, colors, 0, ncolors);
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212 SDL_Delay (1);
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213 }
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214 NOTICE ("testwin: fading over\n");
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215 }
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216
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217 done:
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218 /* Free the picture and return */
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219 SDL_FreeSurface (picture);
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220 free (colors);
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221 free (cmap);
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222 return;
0
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223 }
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224
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225 int
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226 main (int argc, char *argv[])
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227 {
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228 SDL_Surface *screen;
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229 /* Options */
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230 int speedy, flip, nofade;
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231 int delay;
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232 int w, h;
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233 int desired_bpp;
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234 Uint32 video_flags;
0
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235 #ifdef BENCHMARK_SDL
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236 Uint32 then, now;
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237 #endif
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238 /* Set default options and check command-line */
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239 speedy = 0;
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240 flip = 0;
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241 nofade = 0;
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242 delay = 1;
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243
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244 #ifdef _WIN32_WCE
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245 w = 240;
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246 h = 320;
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247 desired_bpp = 8;
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248 video_flags = SDL_FULLSCREEN;
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249 #else
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250 w = 640;
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251 h = 480;
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252 desired_bpp = 0;
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253 video_flags = 0;
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254 #endif
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255 if (SDL_Init (SDL_INIT_VIDEO) < 0) {
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256 fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
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257 return (1);
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258 }
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259
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260 while (argc > 1) {
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261 if (strcmp (argv[1], "-speedy") == 0) {
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262 speedy = 1;
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263 argv += 1;
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264 argc -= 1;
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265 } else if (strcmp (argv[1], "-nofade") == 0) {
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266 nofade = 1;
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267 argv += 1;
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268 argc -= 1;
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269 } else if (strcmp (argv[1], "-delay") == 0) {
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270 if (argv[2]) {
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271 delay = atoi (argv[2]);
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272 argv += 2;
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273 argc -= 2;
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274 } else {
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275 fprintf (stderr, "The -delay option requires an argument\n");
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276 quit (1);
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277 }
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278 } else if (strcmp (argv[1], "-width") == 0) {
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279 if (argv[2] && ((w = atoi (argv[2])) > 0)) {
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280 argv += 2;
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281 argc -= 2;
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282 } else {
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283 fprintf (stderr, "The -width option requires an argument\n");
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284 quit (1);
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285 }
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286 } else if (strcmp (argv[1], "-height") == 0) {
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287 if (argv[2] && ((h = atoi (argv[2])) > 0)) {
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288 argv += 2;
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289 argc -= 2;
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290 } else {
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291 fprintf (stderr, "The -height option requires an argument\n");
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292 quit (1);
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293 }
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294 } else if (strcmp (argv[1], "-bpp") == 0) {
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295 if (argv[2]) {
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296 desired_bpp = atoi (argv[2]);
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297 argv += 2;
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298 argc -= 2;
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299 } else {
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300 fprintf (stderr, "The -bpp option requires an argument\n");
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301 quit (1);
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302 }
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303 } else if (strcmp (argv[1], "-warp") == 0) {
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304 video_flags |= SDL_HWPALETTE;
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305 argv += 1;
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306 argc -= 1;
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307 } else if (strcmp (argv[1], "-hw") == 0) {
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308 video_flags |= SDL_HWSURFACE;
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309 argv += 1;
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310 argc -= 1;
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311 } else if (strcmp (argv[1], "-flip") == 0) {
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312 video_flags |= SDL_DOUBLEBUF;
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313 argv += 1;
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314 argc -= 1;
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315 } else if (strcmp (argv[1], "-fullscreen") == 0) {
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316 video_flags |= SDL_FULLSCREEN;
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317 argv += 1;
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318 argc -= 1;
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319 } else
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diff changeset
320 break;
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321 }
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322
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323 /* Initialize the display */
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diff changeset
324 screen = SDL_SetVideoMode (w, h, desired_bpp, video_flags);
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diff changeset
325 if (screen == NULL) {
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326 fprintf (stderr, "Couldn't set %dx%dx%d video mode: %s\n",
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327 w, h, desired_bpp, SDL_GetError ());
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328 quit (1);
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diff changeset
329 }
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diff changeset
330 printf ("Set%s %dx%dx%d mode\n",
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diff changeset
331 screen->flags & SDL_FULLSCREEN ? " fullscreen" : "",
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diff changeset
332 screen->w, screen->h, screen->format->BitsPerPixel);
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diff changeset
333 printf ("(video surface located in %s memory)\n",
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diff changeset
334 (screen->flags & SDL_HWSURFACE) ? "video" : "system");
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diff changeset
335 if (screen->flags & SDL_DOUBLEBUF) {
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diff changeset
336 printf ("Double-buffering enabled\n");
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diff changeset
337 flip = 1;
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diff changeset
338 }
0
74212992fb08 Initial revision
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diff changeset
339
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diff changeset
340 /* Set the window manager title bar */
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diff changeset
341 SDL_WM_SetCaption ("SDL test window", "testwin");
0
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diff changeset
342
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diff changeset
343 /* Do all the drawing work */
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diff changeset
344 #ifdef BENCHMARK_SDL
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diff changeset
345 then = SDL_GetTicks ();
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diff changeset
346 DrawPict (screen, argv[1], speedy, flip, nofade);
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diff changeset
347 now = SDL_GetTicks ();
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diff changeset
348 printf ("Time: %d milliseconds\n", now - then);
0
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diff changeset
349 #else
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350 DrawPict (screen, argv[1], speedy, flip, nofade);
0
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351 #endif
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352 SDL_Delay (delay * 1000);
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353 SDL_Quit ();
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354 return (0);
0
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355 }