Mercurial > sdl-ios-xcode
annotate test/testgl.c @ 214:0e5d6dd77bda
Added platform independent OpenGL header - SDL_opengl.h
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 25 Oct 2001 05:37:32 +0000 |
| parents | 74212992fb08 |
| children | 50620ec9c86a |
| 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 #endif |
| 11 | |
| 12 #define SHADED_CUBE | |
| 13 | |
| 14 | |
| 15 void HotKey_ToggleFullScreen(void) | |
| 16 { | |
| 17 SDL_Surface *screen; | |
| 18 | |
| 19 screen = SDL_GetVideoSurface(); | |
| 20 if ( SDL_WM_ToggleFullScreen(screen) ) { | |
| 21 printf("Toggled fullscreen mode - now %s\n", | |
| 22 (screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed"); | |
| 23 } else { | |
| 24 printf("Unable to toggle fullscreen mode\n"); | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 void HotKey_ToggleGrab(void) | |
| 29 { | |
| 30 SDL_GrabMode mode; | |
| 31 | |
| 32 printf("Ctrl-G: toggling input grab!\n"); | |
| 33 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 34 if ( mode == SDL_GRAB_ON ) { | |
| 35 printf("Grab was on\n"); | |
| 36 } else { | |
| 37 printf("Grab was off\n"); | |
| 38 } | |
| 39 mode = SDL_WM_GrabInput(!mode); | |
| 40 if ( mode == SDL_GRAB_ON ) { | |
| 41 printf("Grab is now on\n"); | |
| 42 } else { | |
| 43 printf("Grab is now off\n"); | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 void HotKey_Iconify(void) | |
| 48 { | |
| 49 printf("Ctrl-Z: iconifying window!\n"); | |
| 50 SDL_WM_IconifyWindow(); | |
| 51 } | |
| 52 | |
| 53 int HandleEvent(SDL_Event *event) | |
| 54 { | |
| 55 int done; | |
| 56 | |
| 57 done = 0; | |
| 58 switch( event->type ) { | |
| 59 case SDL_ACTIVEEVENT: | |
| 60 /* See what happened */ | |
| 61 printf( "app %s ", event->active.gain ? "gained" : "lost" ); | |
| 62 if ( event->active.state & SDL_APPACTIVE ) { | |
| 63 printf( "active " ); | |
| 64 } else if ( event->active.state & SDL_APPMOUSEFOCUS ) { | |
| 65 printf( "mouse " ); | |
| 66 } else if ( event->active.state & SDL_APPINPUTFOCUS ) { | |
| 67 printf( "input " ); | |
| 68 } | |
| 69 printf( "focus\n" ); | |
| 70 break; | |
| 71 | |
| 72 | |
| 73 case SDL_KEYDOWN: | |
| 74 if ( event->key.keysym.sym == SDLK_ESCAPE ) { | |
| 75 done = 1; | |
| 76 } | |
| 77 if ( (event->key.keysym.sym == SDLK_g) && | |
| 78 (event->key.keysym.mod & KMOD_CTRL) ) { | |
| 79 HotKey_ToggleGrab(); | |
| 80 } | |
| 81 if ( (event->key.keysym.sym == SDLK_z) && | |
| 82 (event->key.keysym.mod & KMOD_CTRL) ) { | |
| 83 HotKey_Iconify(); | |
| 84 } | |
| 85 if ( (event->key.keysym.sym == SDLK_RETURN) && | |
| 86 (event->key.keysym.mod & KMOD_ALT) ) { | |
| 87 HotKey_ToggleFullScreen(); | |
| 88 } | |
| 89 printf("key '%s' pressed\n", | |
| 90 SDL_GetKeyName(event->key.keysym.sym)); | |
| 91 break; | |
| 92 case SDL_QUIT: | |
| 93 done = 1; | |
| 94 break; | |
| 95 } | |
| 96 return(done); | |
| 97 } | |
| 98 | |
| 99 void DrawSDLLogo(void) | |
| 100 { | |
| 101 static SDL_Surface *image = NULL; | |
| 102 static int x = 0; | |
| 103 static int y = 0; | |
| 104 static int delta_x = 1; | |
| 105 static int delta_y = 1; | |
| 106 static Uint32 last_moved = 0; | |
| 107 | |
| 108 SDL_Rect dst; | |
| 109 SDL_Surface *screen; | |
| 110 | |
| 111 if ( image == NULL ) { | |
| 112 SDL_Surface *temp; | |
| 113 | |
| 114 temp = SDL_LoadBMP("icon.bmp"); | |
| 115 if ( temp == NULL ) { | |
| 116 return; | |
| 117 } | |
| 118 image = SDL_CreateRGBSurface( | |
| 119 SDL_SWSURFACE, | |
| 120 temp->w, temp->h, | |
| 121 32, | |
| 122 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 123 0x000000FF, | |
| 124 0x0000FF00, | |
| 125 0x00FF0000, | |
| 126 0xFF000000 | |
| 127 #else | |
| 128 0xFF000000, | |
| 129 0x00FF0000, | |
| 130 0x0000FF00, | |
| 131 0x000000FF | |
| 132 #endif | |
| 133 ); | |
| 134 if ( image != NULL ) { | |
| 135 SDL_BlitSurface(temp, NULL, image, NULL); | |
| 136 } | |
| 137 SDL_FreeSurface(temp); | |
| 138 if ( image == NULL ) { | |
| 139 return; | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 screen = SDL_GetVideoSurface(); | |
| 144 | |
| 145 /* Show the image on the screen */ | |
| 146 dst.x = x; | |
| 147 dst.y = y; | |
| 148 dst.w = image->w; | |
| 149 dst.h = image->h; | |
| 150 | |
| 151 /* Move it around | |
| 152 Note that we do not clear the old position. This is because we | |
| 153 perform a glClear() which clears the framebuffer and then only | |
| 154 update the new area. | |
| 155 Note that you can also achieve interesting effects by modifying | |
| 156 the screen surface alpha channel. It's set to 255 by default.. | |
| 157 */ | |
| 158 if ( (SDL_GetTicks() - last_moved) > 100 ) { | |
| 159 x += delta_x; | |
| 160 if ( x < 0 ) { | |
| 161 x = 0; | |
| 162 delta_x = -delta_x; | |
| 163 } else | |
| 164 if ( (x+image->w) > screen->w ) { | |
| 165 x = screen->w-image->w; | |
| 166 delta_x = -delta_x; | |
| 167 } | |
| 168 y += delta_y; | |
| 169 if ( y < 0 ) { | |
| 170 y = 0; | |
| 171 delta_y = -delta_y; | |
| 172 } else | |
| 173 if ( (y+image->h) > screen->h ) { | |
| 174 y = screen->h-image->h; | |
| 175 delta_y = -delta_y; | |
| 176 } | |
| 177 SDL_BlitSurface(image, NULL, screen, &dst); | |
| 178 } | |
| 179 SDL_UpdateRects(screen, 1, &dst); | |
| 180 } | |
| 181 | |
| 182 int RunGLTest( int argc, char* argv[], | |
| 183 int logo, int slowly, int bpp, float gamma ) | |
| 184 { | |
| 185 int i; | |
| 186 int rgb_size[3]; | |
| 187 int w = 640; | |
| 188 int h = 480; | |
| 189 int done = 0; | |
| 190 int frames; | |
| 191 Uint32 start_time, this_time; | |
| 192 float color[8][3]= {{ 1.0, 1.0, 0.0}, | |
| 193 { 1.0, 0.0, 0.0}, | |
| 194 { 0.0, 0.0, 0.0}, | |
| 195 { 0.0, 1.0, 0.0}, | |
| 196 { 0.0, 1.0, 1.0}, | |
| 197 { 1.0, 1.0, 1.0}, | |
| 198 { 1.0, 0.0, 1.0}, | |
| 199 { 0.0, 0.0, 1.0}}; | |
| 200 float cube[8][3]= {{ 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 {-0.5, -0.5, 0.5}}; | |
| 208 Uint32 video_flags; | |
| 209 int value; | |
| 210 | |
| 211 if( SDL_Init( SDL_INIT_VIDEO ) < 0 ) { | |
| 212 fprintf(stderr,"Couldn't initialize SDL: %s\n",SDL_GetError()); | |
| 213 exit( 1 ); | |
| 214 } | |
| 215 | |
| 216 /* See if we should detect the display depth */ | |
| 217 if ( bpp == 0 ) { | |
| 218 if ( SDL_GetVideoInfo()->vfmt->BitsPerPixel <= 8 ) { | |
| 219 bpp = 8; | |
| 220 } else { | |
| 221 bpp = 16; /* More doesn't seem to work */ | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 /* Set the flags we want to use for setting the video mode */ | |
| 226 if ( logo ) { | |
| 227 video_flags = SDL_OPENGLBLIT; | |
| 228 } else { | |
| 229 video_flags = SDL_OPENGL; | |
| 230 } | |
| 231 for ( i=1; argv[i]; ++i ) { | |
| 232 if ( strcmp(argv[1], "-fullscreen") == 0 ) { | |
| 233 video_flags |= SDL_FULLSCREEN; | |
| 234 } | |
| 235 } | |
| 236 | |
| 237 /* Initialize the display */ | |
| 238 switch (bpp) { | |
| 239 case 8: | |
| 240 rgb_size[0] = 2; | |
| 241 rgb_size[1] = 3; | |
| 242 rgb_size[2] = 3; | |
| 243 break; | |
| 244 case 15: | |
| 245 case 16: | |
| 246 rgb_size[0] = 5; | |
| 247 rgb_size[1] = 5; | |
| 248 rgb_size[2] = 5; | |
| 249 break; | |
| 250 default: | |
| 251 rgb_size[0] = 8; | |
| 252 rgb_size[1] = 8; | |
| 253 rgb_size[2] = 8; | |
| 254 break; | |
| 255 } | |
| 256 SDL_GL_SetAttribute( SDL_GL_RED_SIZE, rgb_size[0] ); | |
| 257 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, rgb_size[1] ); | |
| 258 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, rgb_size[2] ); | |
| 259 SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 ); | |
| 260 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); | |
| 261 if ( SDL_SetVideoMode( w, h, bpp, video_flags ) == NULL ) { | |
| 262 fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError()); | |
| 263 SDL_Quit(); | |
| 264 exit(1); | |
| 265 } | |
| 266 | |
| 267 printf("Screen BPP: %d\n", SDL_GetVideoSurface()->format->BitsPerPixel); | |
| 268 printf("\n"); | |
| 269 printf( "Vendor : %s\n", glGetString( GL_VENDOR ) ); | |
| 270 printf( "Renderer : %s\n", glGetString( GL_RENDERER ) ); | |
| 271 printf( "Version : %s\n", glGetString( GL_VERSION ) ); | |
| 272 printf( "Extensions : %s\n", glGetString( GL_EXTENSIONS ) ); | |
| 273 printf("\n"); | |
| 274 | |
| 275 SDL_GL_GetAttribute( SDL_GL_RED_SIZE, &value ); | |
| 276 printf( "SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0],value); | |
| 277 SDL_GL_GetAttribute( SDL_GL_GREEN_SIZE, &value ); | |
| 278 printf( "SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1],value); | |
| 279 SDL_GL_GetAttribute( SDL_GL_BLUE_SIZE, &value ); | |
| 280 printf( "SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2],value); | |
| 281 SDL_GL_GetAttribute( SDL_GL_DEPTH_SIZE, &value ); | |
| 282 printf( "SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value ); | |
| 283 SDL_GL_GetAttribute( SDL_GL_DOUBLEBUFFER, &value ); | |
| 284 printf( "SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value ); | |
| 285 | |
| 286 /* Set the window manager title bar */ | |
| 287 SDL_WM_SetCaption( "SDL GL test", "testgl" ); | |
| 288 | |
| 289 /* Set the gamma for the window */ | |
| 290 if ( gamma != 0.0 ) { | |
| 291 SDL_SetGamma(gamma, gamma, gamma); | |
| 292 } | |
| 293 | |
| 294 glViewport( 0, 0, w, h ); | |
| 295 glMatrixMode( GL_PROJECTION ); | |
| 296 glLoadIdentity( ); | |
| 297 | |
| 298 glOrtho( -2.0, 2.0, -2.0, 2.0, -20.0, 20.0 ); | |
| 299 | |
| 300 glMatrixMode( GL_MODELVIEW ); | |
| 301 glLoadIdentity( ); | |
| 302 | |
| 303 glEnable(GL_DEPTH_TEST); | |
| 304 | |
| 305 glDepthFunc(GL_LESS); | |
| 306 | |
| 307 glShadeModel(GL_SMOOTH); | |
| 308 | |
| 309 /* Loop until done. */ | |
| 310 start_time = SDL_GetTicks(); | |
| 311 frames = 0; | |
| 312 while( !done ) { | |
| 313 GLenum gl_error; | |
| 314 char* sdl_error; | |
| 315 SDL_Event event; | |
| 316 | |
| 317 /* Do our drawing, too. */ | |
| 318 glClearColor( 0.0, 0.0, 0.0, 1.0 ); | |
| 319 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
| 320 | |
| 321 glBegin( GL_QUADS ); | |
| 322 | |
| 323 #ifdef SHADED_CUBE | |
| 324 glColor3fv(color[0]); | |
| 325 glVertex3fv(cube[0]); | |
| 326 glColor3fv(color[1]); | |
| 327 glVertex3fv(cube[1]); | |
| 328 glColor3fv(color[2]); | |
| 329 glVertex3fv(cube[2]); | |
| 330 glColor3fv(color[3]); | |
| 331 glVertex3fv(cube[3]); | |
| 332 | |
| 333 glColor3fv(color[3]); | |
| 334 glVertex3fv(cube[3]); | |
| 335 glColor3fv(color[4]); | |
| 336 glVertex3fv(cube[4]); | |
| 337 glColor3fv(color[7]); | |
| 338 glVertex3fv(cube[7]); | |
| 339 glColor3fv(color[2]); | |
| 340 glVertex3fv(cube[2]); | |
| 341 | |
| 342 glColor3fv(color[0]); | |
| 343 glVertex3fv(cube[0]); | |
| 344 glColor3fv(color[5]); | |
| 345 glVertex3fv(cube[5]); | |
| 346 glColor3fv(color[6]); | |
| 347 glVertex3fv(cube[6]); | |
| 348 glColor3fv(color[1]); | |
| 349 glVertex3fv(cube[1]); | |
| 350 | |
| 351 glColor3fv(color[5]); | |
| 352 glVertex3fv(cube[5]); | |
| 353 glColor3fv(color[4]); | |
| 354 glVertex3fv(cube[4]); | |
| 355 glColor3fv(color[7]); | |
| 356 glVertex3fv(cube[7]); | |
| 357 glColor3fv(color[6]); | |
| 358 glVertex3fv(cube[6]); | |
| 359 | |
| 360 glColor3fv(color[5]); | |
| 361 glVertex3fv(cube[5]); | |
| 362 glColor3fv(color[0]); | |
| 363 glVertex3fv(cube[0]); | |
| 364 glColor3fv(color[3]); | |
| 365 glVertex3fv(cube[3]); | |
| 366 glColor3fv(color[4]); | |
| 367 glVertex3fv(cube[4]); | |
| 368 | |
| 369 glColor3fv(color[6]); | |
| 370 glVertex3fv(cube[6]); | |
| 371 glColor3fv(color[1]); | |
| 372 glVertex3fv(cube[1]); | |
| 373 glColor3fv(color[2]); | |
| 374 glVertex3fv(cube[2]); | |
| 375 glColor3fv(color[7]); | |
| 376 glVertex3fv(cube[7]); | |
| 377 #else // flat cube | |
| 378 glColor3f(1.0, 0.0, 0.0); | |
| 379 glVertex3fv(cube[0]); | |
| 380 glVertex3fv(cube[1]); | |
| 381 glVertex3fv(cube[2]); | |
| 382 glVertex3fv(cube[3]); | |
| 383 | |
| 384 glColor3f(0.0, 1.0, 0.0); | |
| 385 glVertex3fv(cube[3]); | |
| 386 glVertex3fv(cube[4]); | |
| 387 glVertex3fv(cube[7]); | |
| 388 glVertex3fv(cube[2]); | |
| 389 | |
| 390 glColor3f(0.0, 0.0, 1.0); | |
| 391 glVertex3fv(cube[0]); | |
| 392 glVertex3fv(cube[5]); | |
| 393 glVertex3fv(cube[6]); | |
| 394 glVertex3fv(cube[1]); | |
| 395 | |
| 396 glColor3f(0.0, 1.0, 1.0); | |
| 397 glVertex3fv(cube[5]); | |
| 398 glVertex3fv(cube[4]); | |
| 399 glVertex3fv(cube[7]); | |
| 400 glVertex3fv(cube[6]); | |
| 401 | |
| 402 glColor3f(1.0, 1.0, 0.0); | |
| 403 glVertex3fv(cube[5]); | |
| 404 glVertex3fv(cube[0]); | |
| 405 glVertex3fv(cube[3]); | |
| 406 glVertex3fv(cube[4]); | |
| 407 | |
| 408 glColor3f(1.0, 0.0, 1.0); | |
| 409 glVertex3fv(cube[6]); | |
| 410 glVertex3fv(cube[1]); | |
| 411 glVertex3fv(cube[2]); | |
| 412 glVertex3fv(cube[7]); | |
| 413 #endif /* SHADED_CUBE */ | |
| 414 | |
| 415 glEnd( ); | |
| 416 | |
| 417 glMatrixMode(GL_MODELVIEW); | |
| 418 glRotatef(5.0, 1.0, 1.0, 1.0); | |
| 419 | |
| 420 /* Draw 2D logo onto the 3D display */ | |
| 421 if ( logo ) { | |
| 422 DrawSDLLogo(); | |
| 423 } | |
| 424 | |
| 425 SDL_GL_SwapBuffers( ); | |
| 426 | |
| 427 /* Check for error conditions. */ | |
| 428 gl_error = glGetError( ); | |
| 429 | |
| 430 if( gl_error != GL_NO_ERROR ) { | |
| 431 fprintf( stderr, "testgl: OpenGL error: %d\n", gl_error ); | |
| 432 } | |
| 433 | |
| 434 sdl_error = SDL_GetError( ); | |
| 435 | |
| 436 if( sdl_error[0] != '\0' ) { | |
| 437 fprintf(stderr, "testgl: SDL error '%s'\n", sdl_error); | |
| 438 SDL_ClearError(); | |
| 439 } | |
| 440 | |
| 441 /* Allow the user to see what's happening */ | |
| 442 if ( slowly ) { | |
| 443 SDL_Delay( 20 ); | |
| 444 } | |
| 445 | |
| 446 /* Check if there's a pending event. */ | |
| 447 while( SDL_PollEvent( &event ) ) { | |
| 448 done = HandleEvent(&event); | |
| 449 } | |
| 450 ++frames; | |
| 451 } | |
| 452 | |
| 453 /* Print out the frames per second */ | |
| 454 this_time = SDL_GetTicks(); | |
| 455 if ( this_time != start_time ) { | |
| 456 printf("%2.2f FPS\n", | |
| 457 ((float)frames/(this_time-start_time))*1000.0); | |
| 458 } | |
| 459 | |
| 460 /* Destroy our GL context, etc. */ | |
| 461 SDL_Quit( ); | |
| 462 return(0); | |
| 463 } | |
| 464 | |
| 465 int main(int argc, char *argv[]) | |
| 466 { | |
| 467 int i, logo; | |
| 468 int numtests; | |
| 469 int bpp = 0; | |
| 470 int slowly; | |
| 471 float gamma = 0.0; | |
| 472 | |
| 473 logo = 0; | |
| 474 slowly = 0; | |
| 475 numtests = 1; | |
| 476 for ( i=1; argv[i]; ++i ) { | |
| 477 if ( strcmp(argv[i], "-twice") == 0 ) { | |
| 478 ++numtests; | |
| 479 } | |
| 480 if ( strcmp(argv[i], "-logo") == 0 ) { | |
| 481 logo = 1; | |
| 482 } | |
| 483 if ( strcmp(argv[i], "-slow") == 0 ) { | |
| 484 slowly = 1; | |
| 485 } | |
| 486 if ( strcmp(argv[i], "-bpp") == 0 ) { | |
| 487 bpp = atoi(argv[++i]); | |
| 488 } | |
| 489 if ( strcmp(argv[i], "-gamma") == 0 ) { | |
| 490 gamma = (float)atof(argv[++i]); | |
| 491 } | |
| 492 if ( strncmp(argv[i], "-h", 2) == 0 ) { | |
| 493 printf( | |
| 494 "Usage: %s [-twice] [-logo] [-slow] [-bpp n] [-gamma n]\n", | |
| 495 argv[0]); | |
| 496 exit(0); | |
| 497 } | |
| 498 } | |
| 499 for ( i=0; i<numtests; ++i ) { | |
| 500 RunGLTest(argc, argv, logo, slowly, bpp, gamma); | |
| 501 } | |
| 502 return 0; | |
| 503 } | |
| 504 | |
| 505 #else /* HAVE_OPENGL */ | |
| 506 | |
| 507 int main(int argc, char *argv[]) | |
| 508 { | |
| 509 printf("No OpenGL support on this system\n"); | |
| 510 return 1; | |
| 511 } | |
| 512 | |
| 513 #endif /* HAVE_OPENGL */ |