Mercurial > sdl-ios-xcode
annotate test/testgl.c @ 232:678e3ed01019
Don't generate a spurious error on SDL_InitVideo()
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 06 Nov 2001 00:15:04 +0000 |
| parents | 50620ec9c86a |
| children | 5b42a7f5fab3 |
| rev | line source |
|---|---|
| 0 | 1 #include <stdlib.h> |
| 2 #include <stdio.h> | |
| 3 #include <string.h> | |
| 4 #include <math.h> | |
| 5 | |
| 6 #include "SDL.h" | |
| 7 | |
| 8 #ifdef HAVE_OPENGL | |
|
214
0e5d6dd77bda
Added platform independent OpenGL header - SDL_opengl.h
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
9 #include "SDL_opengl.h" |
| 0 | 10 |
| 11 #define SHADED_CUBE | |
| 12 | |
| 13 | |
| 14 void HotKey_ToggleFullScreen(void) | |
| 15 { | |
| 16 SDL_Surface *screen; | |
| 17 | |
| 18 screen = SDL_GetVideoSurface(); | |
| 19 if ( SDL_WM_ToggleFullScreen(screen) ) { | |
| 20 printf("Toggled fullscreen mode - now %s\n", | |
| 21 (screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed"); | |
| 22 } else { | |
| 23 printf("Unable to toggle fullscreen mode\n"); | |
| 24 } | |
| 25 } | |
| 26 | |
| 27 void HotKey_ToggleGrab(void) | |
| 28 { | |
| 29 SDL_GrabMode mode; | |
| 30 | |
| 31 printf("Ctrl-G: toggling input grab!\n"); | |
| 32 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 33 if ( mode == SDL_GRAB_ON ) { | |
| 34 printf("Grab was on\n"); | |
| 35 } else { | |
| 36 printf("Grab was off\n"); | |
| 37 } | |
| 38 mode = SDL_WM_GrabInput(!mode); | |
| 39 if ( mode == SDL_GRAB_ON ) { | |
| 40 printf("Grab is now on\n"); | |
| 41 } else { | |
| 42 printf("Grab is now off\n"); | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 void HotKey_Iconify(void) | |
| 47 { | |
| 48 printf("Ctrl-Z: iconifying window!\n"); | |
| 49 SDL_WM_IconifyWindow(); | |
| 50 } | |
| 51 | |
| 52 int HandleEvent(SDL_Event *event) | |
| 53 { | |
| 54 int done; | |
| 55 | |
| 56 done = 0; | |
| 57 switch( event->type ) { | |
| 58 case SDL_ACTIVEEVENT: | |
| 59 /* See what happened */ | |
| 60 printf( "app %s ", event->active.gain ? "gained" : "lost" ); | |
| 61 if ( event->active.state & SDL_APPACTIVE ) { | |
| 62 printf( "active " ); | |
| 63 } else if ( event->active.state & SDL_APPMOUSEFOCUS ) { | |
| 64 printf( "mouse " ); | |
| 65 } else if ( event->active.state & SDL_APPINPUTFOCUS ) { | |
| 66 printf( "input " ); | |
| 67 } | |
| 68 printf( "focus\n" ); | |
| 69 break; | |
| 70 | |
| 71 | |
| 72 case SDL_KEYDOWN: | |
| 73 if ( event->key.keysym.sym == SDLK_ESCAPE ) { | |
| 74 done = 1; | |
| 75 } | |
| 76 if ( (event->key.keysym.sym == SDLK_g) && | |
| 77 (event->key.keysym.mod & KMOD_CTRL) ) { | |
| 78 HotKey_ToggleGrab(); | |
| 79 } | |
| 80 if ( (event->key.keysym.sym == SDLK_z) && | |
| 81 (event->key.keysym.mod & KMOD_CTRL) ) { | |
| 82 HotKey_Iconify(); | |
| 83 } | |
| 84 if ( (event->key.keysym.sym == SDLK_RETURN) && | |
| 85 (event->key.keysym.mod & KMOD_ALT) ) { | |
| 86 HotKey_ToggleFullScreen(); | |
| 87 } | |
| 88 printf("key '%s' pressed\n", | |
| 89 SDL_GetKeyName(event->key.keysym.sym)); | |
| 90 break; | |
| 91 case SDL_QUIT: | |
| 92 done = 1; | |
| 93 break; | |
| 94 } | |
| 95 return(done); | |
| 96 } | |
| 97 | |
| 98 void DrawSDLLogo(void) | |
| 99 { | |
| 100 static SDL_Surface *image = NULL; | |
| 101 static int x = 0; | |
| 102 static int y = 0; | |
| 103 static int delta_x = 1; | |
| 104 static int delta_y = 1; | |
| 105 static Uint32 last_moved = 0; | |
| 106 | |
| 107 SDL_Rect dst; | |
| 108 SDL_Surface *screen; | |
| 109 | |
| 110 if ( image == NULL ) { | |
| 111 SDL_Surface *temp; | |
| 112 | |
| 113 temp = SDL_LoadBMP("icon.bmp"); | |
| 114 if ( temp == NULL ) { | |
| 115 return; | |
| 116 } | |
| 117 image = SDL_CreateRGBSurface( | |
| 118 SDL_SWSURFACE, | |
| 119 temp->w, temp->h, | |
| 120 32, | |
| 121 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 122 0x000000FF, | |
| 123 0x0000FF00, | |
| 124 0x00FF0000, | |
| 125 0xFF000000 | |
| 126 #else | |
| 127 0xFF000000, | |
| 128 0x00FF0000, | |
| 129 0x0000FF00, | |
| 130 0x000000FF | |
| 131 #endif | |
| 132 ); | |
| 133 if ( image != NULL ) { | |
| 134 SDL_BlitSurface(temp, NULL, image, NULL); | |
| 135 } | |
| 136 SDL_FreeSurface(temp); | |
| 137 if ( image == NULL ) { | |
| 138 return; | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 screen = SDL_GetVideoSurface(); | |
| 143 | |
| 144 /* Show the image on the screen */ | |
| 145 dst.x = x; | |
| 146 dst.y = y; | |
| 147 dst.w = image->w; | |
| 148 dst.h = image->h; | |
| 149 | |
| 150 /* Move it around | |
| 151 Note that we do not clear the old position. This is because we | |
| 152 perform a glClear() which clears the framebuffer and then only | |
| 153 update the new area. | |
| 154 Note that you can also achieve interesting effects by modifying | |
| 155 the screen surface alpha channel. It's set to 255 by default.. | |
| 156 */ | |
| 157 if ( (SDL_GetTicks() - last_moved) > 100 ) { | |
| 158 x += delta_x; | |
| 159 if ( x < 0 ) { | |
| 160 x = 0; | |
| 161 delta_x = -delta_x; | |
| 162 } else | |
| 163 if ( (x+image->w) > screen->w ) { | |
| 164 x = screen->w-image->w; | |
| 165 delta_x = -delta_x; | |
| 166 } | |
| 167 y += delta_y; | |
| 168 if ( y < 0 ) { | |
| 169 y = 0; | |
| 170 delta_y = -delta_y; | |
| 171 } else | |
| 172 if ( (y+image->h) > screen->h ) { | |
| 173 y = screen->h-image->h; | |
| 174 delta_y = -delta_y; | |
| 175 } | |
| 176 SDL_BlitSurface(image, NULL, screen, &dst); | |
| 177 } | |
| 178 SDL_UpdateRects(screen, 1, &dst); | |
| 179 } | |
| 180 | |
| 181 int RunGLTest( int argc, char* argv[], | |
| 182 int logo, int slowly, int bpp, float gamma ) | |
| 183 { | |
| 184 int i; | |
| 185 int rgb_size[3]; | |
| 186 int w = 640; | |
| 187 int h = 480; | |
| 188 int done = 0; | |
| 189 int frames; | |
| 190 Uint32 start_time, this_time; | |
| 191 float color[8][3]= {{ 1.0, 1.0, 0.0}, | |
| 192 { 1.0, 0.0, 0.0}, | |
| 193 { 0.0, 0.0, 0.0}, | |
| 194 { 0.0, 1.0, 0.0}, | |
| 195 { 0.0, 1.0, 1.0}, | |
| 196 { 1.0, 1.0, 1.0}, | |
| 197 { 1.0, 0.0, 1.0}, | |
| 198 { 0.0, 0.0, 1.0}}; | |
| 199 float cube[8][3]= {{ 0.5, 0.5, -0.5}, | |
| 200 { 0.5, -0.5, -0.5}, | |
| 201 {-0.5, -0.5, -0.5}, | |
| 202 {-0.5, 0.5, -0.5}, | |
| 203 {-0.5, 0.5, 0.5}, | |
| 204 { 0.5, 0.5, 0.5}, | |
| 205 { 0.5, -0.5, 0.5}, | |
| 206 {-0.5, -0.5, 0.5}}; | |
| 207 Uint32 video_flags; | |
| 208 int value; | |
| 209 | |
| 210 if( SDL_Init( SDL_INIT_VIDEO ) < 0 ) { | |
| 211 fprintf(stderr,"Couldn't initialize SDL: %s\n",SDL_GetError()); | |
| 212 exit( 1 ); | |
| 213 } | |
| 214 | |
| 215 /* See if we should detect the display depth */ | |
| 216 if ( bpp == 0 ) { | |
| 217 if ( SDL_GetVideoInfo()->vfmt->BitsPerPixel <= 8 ) { | |
| 218 bpp = 8; | |
| 219 } else { | |
| 220 bpp = 16; /* More doesn't seem to work */ | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 /* Set the flags we want to use for setting the video mode */ | |
| 225 if ( logo ) { | |
| 226 video_flags = SDL_OPENGLBLIT; | |
| 227 } else { | |
| 228 video_flags = SDL_OPENGL; | |
| 229 } | |
| 230 for ( i=1; argv[i]; ++i ) { | |
| 231 if ( strcmp(argv[1], "-fullscreen") == 0 ) { | |
| 232 video_flags |= SDL_FULLSCREEN; | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 /* Initialize the display */ | |
| 237 switch (bpp) { | |
| 238 case 8: | |
| 239 rgb_size[0] = 2; | |
| 240 rgb_size[1] = 3; | |
| 241 rgb_size[2] = 3; | |
| 242 break; | |
| 243 case 15: | |
| 244 case 16: | |
| 245 rgb_size[0] = 5; | |
| 246 rgb_size[1] = 5; | |
| 247 rgb_size[2] = 5; | |
| 248 break; | |
| 249 default: | |
| 250 rgb_size[0] = 8; | |
| 251 rgb_size[1] = 8; | |
| 252 rgb_size[2] = 8; | |
| 253 break; | |
| 254 } | |
| 255 SDL_GL_SetAttribute( SDL_GL_RED_SIZE, rgb_size[0] ); | |
| 256 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, rgb_size[1] ); | |
| 257 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, rgb_size[2] ); | |
| 258 SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 ); | |
| 259 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); | |
| 260 if ( SDL_SetVideoMode( w, h, bpp, video_flags ) == NULL ) { | |
| 261 fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError()); | |
| 262 SDL_Quit(); | |
| 263 exit(1); | |
| 264 } | |
| 265 | |
| 266 printf("Screen BPP: %d\n", SDL_GetVideoSurface()->format->BitsPerPixel); | |
| 267 printf("\n"); | |
| 268 printf( "Vendor : %s\n", glGetString( GL_VENDOR ) ); | |
| 269 printf( "Renderer : %s\n", glGetString( GL_RENDERER ) ); | |
| 270 printf( "Version : %s\n", glGetString( GL_VERSION ) ); | |
| 271 printf( "Extensions : %s\n", glGetString( GL_EXTENSIONS ) ); | |
| 272 printf("\n"); | |
| 273 | |
| 274 SDL_GL_GetAttribute( SDL_GL_RED_SIZE, &value ); | |
| 275 printf( "SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0],value); | |
| 276 SDL_GL_GetAttribute( SDL_GL_GREEN_SIZE, &value ); | |
| 277 printf( "SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1],value); | |
| 278 SDL_GL_GetAttribute( SDL_GL_BLUE_SIZE, &value ); | |
| 279 printf( "SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2],value); | |
| 280 SDL_GL_GetAttribute( SDL_GL_DEPTH_SIZE, &value ); | |
| 281 printf( "SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value ); | |
| 282 SDL_GL_GetAttribute( SDL_GL_DOUBLEBUFFER, &value ); | |
| 283 printf( "SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value ); | |
| 284 | |
| 285 /* Set the window manager title bar */ | |
| 286 SDL_WM_SetCaption( "SDL GL test", "testgl" ); | |
| 287 | |
| 288 /* Set the gamma for the window */ | |
| 289 if ( gamma != 0.0 ) { | |
| 290 SDL_SetGamma(gamma, gamma, gamma); | |
| 291 } | |
| 292 | |
| 293 glViewport( 0, 0, w, h ); | |
| 294 glMatrixMode( GL_PROJECTION ); | |
| 295 glLoadIdentity( ); | |
| 296 | |
| 297 glOrtho( -2.0, 2.0, -2.0, 2.0, -20.0, 20.0 ); | |
| 298 | |
| 299 glMatrixMode( GL_MODELVIEW ); | |
| 300 glLoadIdentity( ); | |
| 301 | |
| 302 glEnable(GL_DEPTH_TEST); | |
| 303 | |
| 304 glDepthFunc(GL_LESS); | |
| 305 | |
| 306 glShadeModel(GL_SMOOTH); | |
| 307 | |
| 308 /* Loop until done. */ | |
| 309 start_time = SDL_GetTicks(); | |
| 310 frames = 0; | |
| 311 while( !done ) { | |
| 312 GLenum gl_error; | |
| 313 char* sdl_error; | |
| 314 SDL_Event event; | |
| 315 | |
| 316 /* Do our drawing, too. */ | |
| 317 glClearColor( 0.0, 0.0, 0.0, 1.0 ); | |
| 318 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
| 319 | |
| 320 glBegin( GL_QUADS ); | |
| 321 | |
| 322 #ifdef SHADED_CUBE | |
| 323 glColor3fv(color[0]); | |
| 324 glVertex3fv(cube[0]); | |
| 325 glColor3fv(color[1]); | |
| 326 glVertex3fv(cube[1]); | |
| 327 glColor3fv(color[2]); | |
| 328 glVertex3fv(cube[2]); | |
| 329 glColor3fv(color[3]); | |
| 330 glVertex3fv(cube[3]); | |
| 331 | |
| 332 glColor3fv(color[3]); | |
| 333 glVertex3fv(cube[3]); | |
| 334 glColor3fv(color[4]); | |
| 335 glVertex3fv(cube[4]); | |
| 336 glColor3fv(color[7]); | |
| 337 glVertex3fv(cube[7]); | |
| 338 glColor3fv(color[2]); | |
| 339 glVertex3fv(cube[2]); | |
| 340 | |
| 341 glColor3fv(color[0]); | |
| 342 glVertex3fv(cube[0]); | |
| 343 glColor3fv(color[5]); | |
| 344 glVertex3fv(cube[5]); | |
| 345 glColor3fv(color[6]); | |
| 346 glVertex3fv(cube[6]); | |
| 347 glColor3fv(color[1]); | |
| 348 glVertex3fv(cube[1]); | |
| 349 | |
| 350 glColor3fv(color[5]); | |
| 351 glVertex3fv(cube[5]); | |
| 352 glColor3fv(color[4]); | |
| 353 glVertex3fv(cube[4]); | |
| 354 glColor3fv(color[7]); | |
| 355 glVertex3fv(cube[7]); | |
| 356 glColor3fv(color[6]); | |
| 357 glVertex3fv(cube[6]); | |
| 358 | |
| 359 glColor3fv(color[5]); | |
| 360 glVertex3fv(cube[5]); | |
| 361 glColor3fv(color[0]); | |
| 362 glVertex3fv(cube[0]); | |
| 363 glColor3fv(color[3]); | |
| 364 glVertex3fv(cube[3]); | |
| 365 glColor3fv(color[4]); | |
| 366 glVertex3fv(cube[4]); | |
| 367 | |
| 368 glColor3fv(color[6]); | |
| 369 glVertex3fv(cube[6]); | |
| 370 glColor3fv(color[1]); | |
| 371 glVertex3fv(cube[1]); | |
| 372 glColor3fv(color[2]); | |
| 373 glVertex3fv(cube[2]); | |
| 374 glColor3fv(color[7]); | |
| 375 glVertex3fv(cube[7]); | |
| 376 #else // flat cube | |
| 377 glColor3f(1.0, 0.0, 0.0); | |
| 378 glVertex3fv(cube[0]); | |
| 379 glVertex3fv(cube[1]); | |
| 380 glVertex3fv(cube[2]); | |
| 381 glVertex3fv(cube[3]); | |
| 382 | |
| 383 glColor3f(0.0, 1.0, 0.0); | |
| 384 glVertex3fv(cube[3]); | |
| 385 glVertex3fv(cube[4]); | |
| 386 glVertex3fv(cube[7]); | |
| 387 glVertex3fv(cube[2]); | |
| 388 | |
| 389 glColor3f(0.0, 0.0, 1.0); | |
| 390 glVertex3fv(cube[0]); | |
| 391 glVertex3fv(cube[5]); | |
| 392 glVertex3fv(cube[6]); | |
| 393 glVertex3fv(cube[1]); | |
| 394 | |
| 395 glColor3f(0.0, 1.0, 1.0); | |
| 396 glVertex3fv(cube[5]); | |
| 397 glVertex3fv(cube[4]); | |
| 398 glVertex3fv(cube[7]); | |
| 399 glVertex3fv(cube[6]); | |
| 400 | |
| 401 glColor3f(1.0, 1.0, 0.0); | |
| 402 glVertex3fv(cube[5]); | |
| 403 glVertex3fv(cube[0]); | |
| 404 glVertex3fv(cube[3]); | |
| 405 glVertex3fv(cube[4]); | |
| 406 | |
| 407 glColor3f(1.0, 0.0, 1.0); | |
| 408 glVertex3fv(cube[6]); | |
| 409 glVertex3fv(cube[1]); | |
| 410 glVertex3fv(cube[2]); | |
| 411 glVertex3fv(cube[7]); | |
| 412 #endif /* SHADED_CUBE */ | |
| 413 | |
| 414 glEnd( ); | |
| 415 | |
| 416 glMatrixMode(GL_MODELVIEW); | |
| 417 glRotatef(5.0, 1.0, 1.0, 1.0); | |
| 418 | |
| 419 /* Draw 2D logo onto the 3D display */ | |
| 420 if ( logo ) { | |
| 421 DrawSDLLogo(); | |
| 422 } | |
| 423 | |
| 424 SDL_GL_SwapBuffers( ); | |
| 425 | |
| 426 /* Check for error conditions. */ | |
| 427 gl_error = glGetError( ); | |
| 428 | |
| 429 if( gl_error != GL_NO_ERROR ) { | |
| 430 fprintf( stderr, "testgl: OpenGL error: %d\n", gl_error ); | |
| 431 } | |
| 432 | |
| 433 sdl_error = SDL_GetError( ); | |
| 434 | |
| 435 if( sdl_error[0] != '\0' ) { | |
| 436 fprintf(stderr, "testgl: SDL error '%s'\n", sdl_error); | |
| 437 SDL_ClearError(); | |
| 438 } | |
| 439 | |
| 440 /* Allow the user to see what's happening */ | |
| 441 if ( slowly ) { | |
| 442 SDL_Delay( 20 ); | |
| 443 } | |
| 444 | |
| 445 /* Check if there's a pending event. */ | |
| 446 while( SDL_PollEvent( &event ) ) { | |
| 447 done = HandleEvent(&event); | |
| 448 } | |
| 449 ++frames; | |
| 450 } | |
| 451 | |
| 452 /* Print out the frames per second */ | |
| 453 this_time = SDL_GetTicks(); | |
| 454 if ( this_time != start_time ) { | |
| 455 printf("%2.2f FPS\n", | |
| 456 ((float)frames/(this_time-start_time))*1000.0); | |
| 457 } | |
| 458 | |
| 459 /* Destroy our GL context, etc. */ | |
| 460 SDL_Quit( ); | |
| 461 return(0); | |
| 462 } | |
| 463 | |
| 464 int main(int argc, char *argv[]) | |
| 465 { | |
| 466 int i, logo; | |
| 467 int numtests; | |
| 468 int bpp = 0; | |
| 469 int slowly; | |
| 470 float gamma = 0.0; | |
| 471 | |
| 472 logo = 0; | |
| 473 slowly = 0; | |
| 474 numtests = 1; | |
| 475 for ( i=1; argv[i]; ++i ) { | |
| 476 if ( strcmp(argv[i], "-twice") == 0 ) { | |
| 477 ++numtests; | |
| 478 } | |
| 479 if ( strcmp(argv[i], "-logo") == 0 ) { | |
| 480 logo = 1; | |
| 481 } | |
| 482 if ( strcmp(argv[i], "-slow") == 0 ) { | |
| 483 slowly = 1; | |
| 484 } | |
| 485 if ( strcmp(argv[i], "-bpp") == 0 ) { | |
| 486 bpp = atoi(argv[++i]); | |
| 487 } | |
| 488 if ( strcmp(argv[i], "-gamma") == 0 ) { | |
| 489 gamma = (float)atof(argv[++i]); | |
| 490 } | |
| 491 if ( strncmp(argv[i], "-h", 2) == 0 ) { | |
| 492 printf( | |
| 493 "Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n]\n", | |
| 494 argv[0]); | |
| 495 exit(0); | |
| 496 } | |
| 497 } | |
| 498 for ( i=0; i<numtests; ++i ) { | |
| 499 RunGLTest(argc, argv, logo, slowly, bpp, gamma); | |
| 500 } | |
| 501 return 0; | |
| 502 } | |
| 503 | |
| 504 #else /* HAVE_OPENGL */ | |
| 505 | |
| 506 int main(int argc, char *argv[]) | |
| 507 { | |
| 508 printf("No OpenGL support on this system\n"); | |
| 509 return 1; | |
| 510 } | |
| 511 | |
| 512 #endif /* HAVE_OPENGL */ |