Mercurial > sdl-ios-xcode
annotate test/threadwin.c @ 1295:c3e36ac8a94c
Date: Sun, 6 Mar 2005 17:06:20 +0100
From: Per Inge Mathisen
Subject: [SDL] Fullscreen refresh on win32
Windows has a terrible default for fullscreen 3D apps of 60mhz refresh
rate. This can be fixed by the user by going into his driver's
control panel and forcing the refresh rate higher. However, this not a
very user friendly way about it, and in any case SDL contains no code
that could figure out this that condition has afflicted the user.
So the question is, could SDL fix this for the user? It is possible
under Windows to request a higher refresh rate. The danger is of
course that if the user has an old monitor, and you request a too high
refresh rate, the monitor could be damaged. However, I believe there
might be a way around that: Check before switching what refresh rate
the user's desktop runs in, and if our fullscreen dimensions are equal
or less than those of the desktop, use the higher refresh rate of 60
and the desktop rate.
Since most users run their desktops in the same or higher resolution
something sane, this should fix this problem for most users.
Thoughts?
An alternative is to add an SDL_GL_GetAttribute(SDL_GL_REFRESH_RATE)
option so that programs can bitch at their users at their own
convenience.
- Per
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 30 Jan 2006 06:56:10 +0000 |
| parents | be9c9c8f6d53 |
| children | 14717b52abc0 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Test out the multi-threaded event handling functions */ | |
| 3 | |
| 4 #include <stdlib.h> | |
| 5 #include <stdio.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "SDL.h" | |
| 9 #include "SDL_thread.h" | |
| 10 | |
| 11 /* Are we done yet? */ | |
| 12 static int done = 0; | |
| 13 | |
| 14 /* Is the cursor visible? */ | |
| 15 static int visible = 1; | |
| 16 | |
|
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17 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
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18 static void quit(int rc) |
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19 { |
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20 SDL_Quit(); |
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21 exit(rc); |
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22 } |
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23 |
| 0 | 24 SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp) |
| 25 { | |
| 26 SDL_Surface *icon; | |
| 27 Uint8 *pixels; | |
| 28 Uint8 *mask; | |
| 29 int mlen, i; | |
| 30 | |
| 31 *maskp = NULL; | |
| 32 | |
| 33 /* Load the icon surface */ | |
| 34 icon = SDL_LoadBMP(file); | |
| 35 if ( icon == NULL ) { | |
| 36 fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError()); | |
| 37 return(NULL); | |
| 38 } | |
| 39 | |
| 40 /* Check width and height */ | |
| 41 if ( (icon->w%8) != 0 ) { | |
| 42 fprintf(stderr, "Icon width must be a multiple of 8!\n"); | |
| 43 SDL_FreeSurface(icon); | |
| 44 return(NULL); | |
| 45 } | |
| 46 if ( icon->format->palette == NULL ) { | |
| 47 fprintf(stderr, "Icon must have a palette!\n"); | |
| 48 SDL_FreeSurface(icon); | |
| 49 return(NULL); | |
| 50 } | |
| 51 | |
| 52 /* Set the colorkey */ | |
| 53 SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels)); | |
| 54 | |
| 55 /* Create the mask */ | |
| 56 pixels = (Uint8 *)icon->pixels; | |
| 57 printf("Transparent pixel: (%d,%d,%d)\n", | |
| 58 icon->format->palette->colors[*pixels].r, | |
| 59 icon->format->palette->colors[*pixels].g, | |
| 60 icon->format->palette->colors[*pixels].b); | |
| 61 mlen = icon->w*icon->h; | |
| 62 mask = (Uint8 *)malloc(mlen/8); | |
| 63 if ( mask == NULL ) { | |
| 64 fprintf(stderr, "Out of memory!\n"); | |
| 65 SDL_FreeSurface(icon); | |
| 66 return(NULL); | |
| 67 } | |
| 68 memset(mask, 0, mlen/8); | |
| 69 for ( i=0; i<mlen; ) { | |
| 70 if ( pixels[i] != *pixels ) | |
| 71 mask[i/8] |= 0x01; | |
| 72 ++i; | |
| 73 if ( (i%8) != 0 ) | |
| 74 mask[i/8] <<= 1; | |
| 75 } | |
| 76 *maskp = mask; | |
| 77 return(icon); | |
| 78 } | |
| 79 | |
| 80 int FilterEvents(const SDL_Event *event) | |
| 81 { | |
| 82 static int reallyquit = 0; | |
| 83 | |
| 84 switch (event->type) { | |
| 85 | |
| 86 case SDL_ACTIVEEVENT: | |
| 87 /* See what happened */ | |
| 88 printf("App %s ", | |
| 89 event->active.gain ? "gained" : "lost"); | |
| 90 if ( event->active.state & SDL_APPACTIVE ) | |
| 91 printf("active "); | |
| 92 if ( event->active.state & SDL_APPMOUSEFOCUS ) | |
| 93 printf("mouse "); | |
| 94 if ( event->active.state & SDL_APPINPUTFOCUS ) | |
| 95 printf("input "); | |
| 96 printf("focus\n"); | |
| 97 | |
| 98 /* See if we are iconified or restored */ | |
| 99 if ( event->active.state & SDL_APPACTIVE ) { | |
| 100 printf("App has been %s\n", | |
| 101 event->active.gain ? | |
| 102 "restored" : "iconified"); | |
| 103 } | |
| 104 return(0); | |
| 105 | |
| 106 /* This is important! Queue it if we want to quit. */ | |
| 107 case SDL_QUIT: | |
| 108 if ( ! reallyquit ) { | |
| 109 reallyquit = 1; | |
| 110 printf("Quit requested\n"); | |
| 111 return(0); | |
| 112 } | |
| 113 printf("Quit demanded\n"); | |
| 114 return(1); | |
| 115 | |
| 116 /* Mouse and keyboard events go to threads */ | |
| 117 case SDL_MOUSEMOTION: | |
| 118 case SDL_MOUSEBUTTONDOWN: | |
| 119 case SDL_MOUSEBUTTONUP: | |
| 120 case SDL_KEYDOWN: | |
| 121 case SDL_KEYUP: | |
| 122 return(1); | |
| 123 | |
| 124 /* Drop all other events */ | |
| 125 default: | |
| 126 return(0); | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 int HandleMouse(void *unused) | |
| 131 { | |
| 132 SDL_Event events[10]; | |
| 133 int i, found; | |
| 134 Uint32 mask; | |
| 135 | |
| 136 /* Handle mouse events here */ | |
| 137 mask = (SDL_MOUSEMOTIONMASK|SDL_MOUSEBUTTONDOWNMASK|SDL_MOUSEBUTTONUPMASK); | |
| 138 while ( ! done ) { | |
| 139 found = SDL_PeepEvents(events, 10, SDL_GETEVENT, mask); | |
| 140 for ( i=0; i<found; ++i ) { | |
| 141 switch(events[i].type) { | |
| 142 /* We want to toggle visibility on buttonpress */ | |
| 143 case SDL_MOUSEBUTTONDOWN: | |
| 144 case SDL_MOUSEBUTTONUP: | |
| 145 if ( events[i].button.state == SDL_PRESSED ) { | |
| 146 visible = !visible; | |
| 147 SDL_ShowCursor(visible); | |
| 148 } | |
| 149 printf("Mouse button %d has been %s\n", | |
| 150 events[i].button.button, | |
| 151 (events[i].button.state == SDL_PRESSED) ? | |
| 152 "pressed" : "released"); | |
| 153 break; | |
| 154 /* Show relative mouse motion */ | |
| 155 case SDL_MOUSEMOTION: | |
| 156 printf("Mouse relative motion: {%d,%d}\n", | |
| 157 events[i].motion.xrel, events[i].motion.yrel); | |
| 158 break; | |
| 159 } | |
| 160 } | |
| 161 /* Give up some CPU to allow events to arrive */ | |
| 162 SDL_Delay(20); | |
| 163 } | |
| 164 return(0); | |
| 165 } | |
| 166 | |
| 167 int HandleKeyboard(void *unused) | |
| 168 { | |
| 169 SDL_Event events[10]; | |
| 170 int i, found; | |
| 171 Uint32 mask; | |
| 172 | |
| 173 /* Handle mouse events here */ | |
| 174 mask = (SDL_KEYDOWNMASK|SDL_KEYUPMASK); | |
| 175 while ( ! done ) { | |
| 176 found = SDL_PeepEvents(events, 10, SDL_GETEVENT, mask); | |
| 177 for ( i=0; i<found; ++i ) { | |
| 178 switch(events[i].type) { | |
| 179 /* We want to toggle visibility on buttonpress */ | |
| 180 case SDL_KEYDOWN: | |
| 181 case SDL_KEYUP: | |
|
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182 printf("Key '%c' has been %s\n", |
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183 events[i].key.keysym.unicode, |
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184 (events[i].key.state == SDL_PRESSED) ? |
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185 "pressed" : "released"); |
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186 |
| 0 | 187 /* Allow hitting <ESC> to quit the app */ |
| 188 if ( events[i].key.keysym.sym == SDLK_ESCAPE ) { | |
| 189 done = 1; | |
| 190 } | |
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191 |
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192 /* skip events now that aren't KEYUPs... */ |
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193 if (events[i].key.state == SDL_PRESSED) |
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194 break; |
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195 |
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196 if ( events[i].key.keysym.sym == SDLK_f ) { |
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197 int rc = 0; |
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198 printf("attempting to toggle fullscreen...\n"); |
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199 rc = SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); |
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200 printf("SDL_WM_ToggleFullScreen returned %d.\n", rc); |
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201 } |
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202 |
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203 if ( events[i].key.keysym.sym == SDLK_g ) { |
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204 SDL_GrabMode m; |
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205 m = SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON ? |
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206 SDL_GRAB_OFF : SDL_GRAB_ON; |
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207 printf("attempting to toggle input grab to %s...\n", |
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208 m == SDL_GRAB_ON ? "ON" : "OFF"); |
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209 SDL_WM_GrabInput(m); |
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210 printf("attempt finished.\n"); |
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211 } |
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212 |
| 0 | 213 break; |
| 214 } | |
| 215 } | |
| 216 /* Give up some CPU to allow events to arrive */ | |
| 217 SDL_Delay(20); | |
| 218 } | |
| 219 return(0); | |
| 220 } | |
| 221 | |
| 222 int main(int argc, char *argv[]) | |
| 223 { | |
| 224 SDL_Surface *screen; | |
| 225 SDL_Surface *icon; | |
| 226 Uint8 *icon_mask; | |
| 227 int i, parsed; | |
| 228 Uint8 *buffer; | |
| 229 SDL_Color palette[256]; | |
| 230 Uint32 init_flags; | |
| 231 Uint8 video_bpp; | |
| 232 Uint32 video_flags; | |
| 233 SDL_Thread *mouse_thread; | |
| 234 SDL_Thread *keybd_thread; | |
| 235 | |
| 236 /* Set the options, based on command line arguments */ | |
| 237 init_flags = SDL_INIT_VIDEO; | |
| 238 video_bpp = 8; | |
| 239 video_flags = SDL_SWSURFACE; | |
| 240 parsed = 1; | |
| 241 while ( parsed ) { | |
| 242 /* If the threaded option is enabled, and the SDL library hasn't | |
| 243 been compiled with threaded events enabled, then the mouse and | |
| 244 keyboard won't respond. | |
| 245 */ | |
| 246 if ( (argc >= 2) && (strcmp(argv[1], "-threaded") == 0) ) { | |
| 247 init_flags |= SDL_INIT_EVENTTHREAD; | |
| 248 argc -= 1; | |
| 249 argv += 1; | |
| 250 printf("Running with threaded events\n"); | |
| 251 } else | |
| 252 if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) { | |
| 253 video_flags |= SDL_FULLSCREEN; | |
| 254 argc -= 1; | |
| 255 argv += 1; | |
| 256 } else | |
| 257 if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) { | |
| 258 video_bpp = atoi(argv[2]); | |
| 259 argc -= 2; | |
| 260 argv += 2; | |
| 261 } else { | |
| 262 parsed = 0; | |
| 263 } | |
| 264 } | |
| 265 | |
| 266 /* Initialize SDL with the requested flags */ | |
| 267 if ( SDL_Init(init_flags) < 0 ) { | |
| 268 fprintf(stderr, | |
| 269 "Couldn't initialize SDL: %s\n", SDL_GetError()); | |
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270 return(1); |
| 0 | 271 } |
| 272 | |
| 273 /* Set the icon -- this must be done before the first mode set */ | |
| 274 icon = LoadIconSurface("icon.bmp", &icon_mask); | |
| 275 if ( icon != NULL ) { | |
| 276 SDL_WM_SetIcon(icon, icon_mask); | |
| 277 } | |
| 278 if ( icon_mask != NULL ) | |
| 279 free(icon_mask); | |
| 280 | |
| 281 /* Initialize the display */ | |
| 282 screen = SDL_SetVideoMode(640, 480, video_bpp, video_flags); | |
| 283 if ( screen == NULL ) { | |
| 284 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", | |
| 285 video_bpp, SDL_GetError()); | |
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286 quit(1); |
| 0 | 287 } |
| 288 printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ? | |
| 289 "fullscreen" : "windowed"); | |
| 290 | |
| 291 /* Enable printable characters */ | |
| 292 SDL_EnableUNICODE(1); | |
| 293 | |
| 294 /* Set an event filter that discards everything but QUIT */ | |
| 295 SDL_SetEventFilter(FilterEvents); | |
| 296 | |
| 297 /* Create the event handling threads */ | |
| 298 mouse_thread = SDL_CreateThread(HandleMouse, NULL); | |
| 299 keybd_thread = SDL_CreateThread(HandleKeyboard, NULL); | |
| 300 | |
| 301 /* Set the surface pixels and refresh! */ | |
| 302 for ( i=0; i<256; ++i ) { | |
| 303 palette[i].r = 255-i; | |
| 304 palette[i].g = 255-i; | |
| 305 palette[i].b = 255-i; | |
| 306 } | |
| 307 SDL_SetColors(screen, palette, 0, 256); | |
| 308 if ( SDL_LockSurface(screen) < 0 ) { | |
| 309 fprintf(stderr, "Couldn't lock display surface: %s\n", | |
| 310 SDL_GetError()); | |
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311 quit(2); |
| 0 | 312 } |
| 313 buffer = (Uint8 *)screen->pixels; | |
| 314 for ( i=0; i<screen->h; ++i ) { | |
| 315 memset(buffer,(i*255)/screen->h, | |
| 316 screen->w*screen->format->BytesPerPixel); | |
| 317 buffer += screen->pitch; | |
| 318 } | |
| 319 SDL_UnlockSurface(screen); | |
| 320 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 321 | |
| 322 /* Loop, waiting for QUIT */ | |
| 323 while ( ! done ) { | |
| 324 if ( ! (init_flags & SDL_INIT_EVENTTHREAD) ) { | |
| 325 SDL_PumpEvents(); /* Needed when event thread is off */ | |
| 326 } | |
| 327 if ( SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, SDL_QUITMASK) ) { | |
| 328 done = 1; | |
| 329 } | |
| 330 /* Give up some CPU so the events can accumulate */ | |
| 331 SDL_Delay(20); | |
| 332 } | |
| 333 SDL_WaitThread(mouse_thread, NULL); | |
| 334 SDL_WaitThread(keybd_thread, NULL); | |
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335 SDL_Quit(); |
| 0 | 336 return(0); |
| 337 } |