1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20 */ 21 22 /** 23 * \file SDL_video.h 24 * 25 * Header file for SDL video functions. 26 */ 27 28 #ifndef _SDL_video_h 29 #define _SDL_video_h 30 31 #include "SDL_stdinc.h" 32 #include "SDL_pixels.h" 33 #include "SDL_rect.h" 34 #include "SDL_surface.h" 35 36 #include "begin_code.h" 37 /* Set up for C function definitions, even when using C++ */ 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /** 43 * \brief The structure that defines a display mode 44 * 45 * \sa SDL_GetNumDisplayModes() 46 * \sa SDL_GetDisplayMode() 47 * \sa SDL_GetDesktopDisplayMode() 48 * \sa SDL_GetCurrentDisplayMode() 49 * \sa SDL_GetClosestDisplayMode() 50 * \sa SDL_SetWindowDisplayMode() 51 * \sa SDL_GetWindowDisplayMode() 52 */ 53 typedef struct 54 { 55 Uint32 format; /**< pixel format */ 56 int w; /**< width, in screen coordinates */ 57 int h; /**< height, in screen coordinates */ 58 int refresh_rate; /**< refresh rate (or zero for unspecified) */ 59 void *driverdata; /**< driver-specific data, initialize to 0 */ 60 } SDL_DisplayMode; 61 62 /** 63 * \brief The type used to identify a window 64 * 65 * \sa SDL_CreateWindow() 66 * \sa SDL_CreateWindowFrom() 67 * \sa SDL_DestroyWindow() 68 * \sa SDL_GetWindowData() 69 * \sa SDL_GetWindowFlags() 70 * \sa SDL_GetWindowGrab() 71 * \sa SDL_GetWindowPosition() 72 * \sa SDL_GetWindowSize() 73 * \sa SDL_GetWindowTitle() 74 * \sa SDL_HideWindow() 75 * \sa SDL_MaximizeWindow() 76 * \sa SDL_MinimizeWindow() 77 * \sa SDL_RaiseWindow() 78 * \sa SDL_RestoreWindow() 79 * \sa SDL_SetWindowData() 80 * \sa SDL_SetWindowFullscreen() 81 * \sa SDL_SetWindowGrab() 82 * \sa SDL_SetWindowIcon() 83 * \sa SDL_SetWindowPosition() 84 * \sa SDL_SetWindowSize() 85 * \sa SDL_SetWindowBordered() 86 * \sa SDL_SetWindowResizable() 87 * \sa SDL_SetWindowTitle() 88 * \sa SDL_ShowWindow() 89 */ 90 typedef struct SDL_Window SDL_Window; 91 92 /** 93 * \brief The flags on a window 94 * 95 * \sa SDL_GetWindowFlags() 96 */ 97 typedef enum 98 { 99 /* !!! FIXME: change this to name = (1<<x). */ 100 SDL_WINDOW_FULLSCREEN = 0x00000001, /**< fullscreen window */ 101 SDL_WINDOW_OPENGL = 0x00000002, /**< window usable with OpenGL context */ 102 SDL_WINDOW_SHOWN = 0x00000004, /**< window is visible */ 103 SDL_WINDOW_HIDDEN = 0x00000008, /**< window is not visible */ 104 SDL_WINDOW_BORDERLESS = 0x00000010, /**< no window decoration */ 105 SDL_WINDOW_RESIZABLE = 0x00000020, /**< window can be resized */ 106 SDL_WINDOW_MINIMIZED = 0x00000040, /**< window is minimized */ 107 SDL_WINDOW_MAXIMIZED = 0x00000080, /**< window is maximized */ 108 SDL_WINDOW_INPUT_GRABBED = 0x00000100, /**< window has grabbed input focus */ 109 SDL_WINDOW_INPUT_FOCUS = 0x00000200, /**< window has input focus */ 110 SDL_WINDOW_MOUSE_FOCUS = 0x00000400, /**< window has mouse focus */ 111 SDL_WINDOW_FULLSCREEN_DESKTOP = ( SDL_WINDOW_FULLSCREEN | 0x00001000 ), 112 SDL_WINDOW_FOREIGN = 0x00000800, /**< window not created by SDL */ 113 SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000, /**< window should be created in high-DPI mode if supported */ 114 SDL_WINDOW_MOUSE_CAPTURE = 0x00004000, /**< window has mouse captured (unrelated to INPUT_GRABBED) */ 115 SDL_WINDOW_ALWAYS_ON_TOP = 0x00008000, /**< window should always be above others */ 116 SDL_WINDOW_SKIP_TASKBAR = 0x00010000, /**< window should not be added to the taskbar */ 117 SDL_WINDOW_UTILITY = 0x00020000, /**< window should be treated as a utility window */ 118 SDL_WINDOW_TOOLTIP = 0x00040000, /**< window should be treated as a tooltip */ 119 SDL_WINDOW_POPUP_MENU = 0x00080000 /**< window should be treated as a popup menu */ 120 } SDL_WindowFlags; 121 122 /** 123 * \brief Used to indicate that you don't care what the window position is. 124 */ 125 #define SDL_WINDOWPOS_UNDEFINED_MASK 0x1FFF0000u 126 #define SDL_WINDOWPOS_UNDEFINED_DISPLAY(X) (SDL_WINDOWPOS_UNDEFINED_MASK|(X)) 127 #define SDL_WINDOWPOS_UNDEFINED SDL_WINDOWPOS_UNDEFINED_DISPLAY(0) 128 #define SDL_WINDOWPOS_ISUNDEFINED(X) \ 129 (((X)&0xFFFF0000) == SDL_WINDOWPOS_UNDEFINED_MASK) 130 131 /** 132 * \brief Used to indicate that the window position should be centered. 133 */ 134 #define SDL_WINDOWPOS_CENTERED_MASK 0x2FFF0000u 135 #define SDL_WINDOWPOS_CENTERED_DISPLAY(X) (SDL_WINDOWPOS_CENTERED_MASK|(X)) 136 #define SDL_WINDOWPOS_CENTERED SDL_WINDOWPOS_CENTERED_DISPLAY(0) 137 #define SDL_WINDOWPOS_ISCENTERED(X) \ 138 (((X)&0xFFFF0000) == SDL_WINDOWPOS_CENTERED_MASK) 139 140 /** 141 * \brief Event subtype for window events 142 */ 143 typedef enum 144 { 145 SDL_WINDOWEVENT_NONE, /**< Never used */ 146 SDL_WINDOWEVENT_SHOWN, /**< Window has been shown */ 147 SDL_WINDOWEVENT_HIDDEN, /**< Window has been hidden */ 148 SDL_WINDOWEVENT_EXPOSED, /**< Window has been exposed and should be 149 redrawn */ 150 SDL_WINDOWEVENT_MOVED, /**< Window has been moved to data1, data2 151 */ 152 SDL_WINDOWEVENT_RESIZED, /**< Window has been resized to data1xdata2 */ 153 SDL_WINDOWEVENT_SIZE_CHANGED, /**< The window size has changed, either as 154 a result of an API call or through the 155 system or user changing the window size. */ 156 SDL_WINDOWEVENT_MINIMIZED, /**< Window has been minimized */ 157 SDL_WINDOWEVENT_MAXIMIZED, /**< Window has been maximized */ 158 SDL_WINDOWEVENT_RESTORED, /**< Window has been restored to normal size 159 and position */ 160 SDL_WINDOWEVENT_ENTER, /**< Window has gained mouse focus */ 161 SDL_WINDOWEVENT_LEAVE, /**< Window has lost mouse focus */ 162 SDL_WINDOWEVENT_FOCUS_GAINED, /**< Window has gained keyboard focus */ 163 SDL_WINDOWEVENT_FOCUS_LOST, /**< Window has lost keyboard focus */ 164 SDL_WINDOWEVENT_CLOSE, /**< The window manager requests that the window be closed */ 165 SDL_WINDOWEVENT_TAKE_FOCUS, /**< Window is being offered a focus (should SetWindowInputFocus() on itself or a subwindow, or ignore) */ 166 SDL_WINDOWEVENT_HIT_TEST /**< Window had a hit test that wasn't SDL_HITTEST_NORMAL. */ 167 } SDL_WindowEventID; 168 169 /** 170 * \brief An opaque handle to an OpenGL context. 171 */ 172 typedef void *SDL_GLContext; 173 174 /** 175 * \brief OpenGL configuration attributes 176 */ 177 typedef enum 178 { 179 SDL_GL_RED_SIZE, 180 SDL_GL_GREEN_SIZE, 181 SDL_GL_BLUE_SIZE, 182 SDL_GL_ALPHA_SIZE, 183 SDL_GL_BUFFER_SIZE, 184 SDL_GL_DOUBLEBUFFER, 185 SDL_GL_DEPTH_SIZE, 186 SDL_GL_STENCIL_SIZE, 187 SDL_GL_ACCUM_RED_SIZE, 188 SDL_GL_ACCUM_GREEN_SIZE, 189 SDL_GL_ACCUM_BLUE_SIZE, 190 SDL_GL_ACCUM_ALPHA_SIZE, 191 SDL_GL_STEREO, 192 SDL_GL_MULTISAMPLEBUFFERS, 193 SDL_GL_MULTISAMPLESAMPLES, 194 SDL_GL_ACCELERATED_VISUAL, 195 SDL_GL_RETAINED_BACKING, 196 SDL_GL_CONTEXT_MAJOR_VERSION, 197 SDL_GL_CONTEXT_MINOR_VERSION, 198 SDL_GL_CONTEXT_EGL, 199 SDL_GL_CONTEXT_FLAGS, 200 SDL_GL_CONTEXT_PROFILE_MASK, 201 SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 202 SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 203 SDL_GL_CONTEXT_RELEASE_BEHAVIOR 204 } SDL_GLattr; 205 206 typedef enum 207 { 208 SDL_GL_CONTEXT_PROFILE_CORE = 0x0001, 209 SDL_GL_CONTEXT_PROFILE_COMPATIBILITY = 0x0002, 210 SDL_GL_CONTEXT_PROFILE_ES = 0x0004 /* GLX_CONTEXT_ES2_PROFILE_BIT_EXT */ 211 } SDL_GLprofile; 212 213 typedef enum 214 { 215 SDL_GL_CONTEXT_DEBUG_FLAG = 0x0001, 216 SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG = 0x0002, 217 SDL_GL_CONTEXT_ROBUST_ACCESS_FLAG = 0x0004, 218 SDL_GL_CONTEXT_RESET_ISOLATION_FLAG = 0x0008 219 } SDL_GLcontextFlag; 220 221 typedef enum 222 { 223 SDL_GL_CONTEXT_RELEASE_BEHAVIOR_NONE = 0x0000, 224 SDL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH = 0x0001 225 } SDL_GLcontextReleaseFlag; 226 227 228 /* Function prototypes */ 229 230 /** 231 * \brief Get the number of video drivers compiled into SDL 232 * 233 * \sa SDL_GetVideoDriver() 234 */ 235 extern DECLSPEC int SDLCALL SDL_GetNumVideoDrivers(void); 236 237 /** 238 * \brief Get the name of a built in video driver. 239 * 240 * \note The video drivers are presented in the order in which they are 241 * normally checked during initialization. 242 * 243 * \sa SDL_GetNumVideoDrivers() 244 */ 245 extern DECLSPEC const char *SDLCALL SDL_GetVideoDriver(int index); 246 247 /** 248 * \brief Initialize the video subsystem, optionally specifying a video driver. 249 * 250 * \param driver_name Initialize a specific driver by name, or NULL for the 251 * default video driver. 252 * 253 * \return 0 on success, -1 on error 254 * 255 * This function initializes the video subsystem; setting up a connection 256 * to the window manager, etc, and determines the available display modes 257 * and pixel formats, but does not initialize a window or graphics mode. 258 * 259 * \sa SDL_VideoQuit() 260 */ 261 extern DECLSPEC int SDLCALL SDL_VideoInit(const char *driver_name); 262 263 /** 264 * \brief Shuts down the video subsystem. 265 * 266 * This function closes all windows, and restores the original video mode. 267 * 268 * \sa SDL_VideoInit() 269 */ 270 extern DECLSPEC void SDLCALL SDL_VideoQuit(void); 271 272 /** 273 * \brief Returns the name of the currently initialized video driver. 274 * 275 * \return The name of the current video driver or NULL if no driver 276 * has been initialized 277 * 278 * \sa SDL_GetNumVideoDrivers() 279 * \sa SDL_GetVideoDriver() 280 */ 281 extern DECLSPEC const char *SDLCALL SDL_GetCurrentVideoDriver(void); 282 283 /** 284 * \brief Returns the number of available video displays. 285 * 286 * \sa SDL_GetDisplayBounds() 287 */ 288 extern DECLSPEC int SDLCALL SDL_GetNumVideoDisplays(void); 289 290 /** 291 * \brief Get the name of a display in UTF-8 encoding 292 * 293 * \return The name of a display, or NULL for an invalid display index. 294 * 295 * \sa SDL_GetNumVideoDisplays() 296 */ 297 extern DECLSPEC const char * SDLCALL SDL_GetDisplayName(int displayIndex); 298 299 /** 300 * \brief Get the desktop area represented by a display, with the primary 301 * display located at 0,0 302 * 303 * \return 0 on success, or -1 if the index is out of range. 304 * 305 * \sa SDL_GetNumVideoDisplays() 306 */ 307 extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect * rect); 308 309 /** 310 * \brief Get the dots/pixels-per-inch for a display 311 * 312 * \note Diagonal, horizontal and vertical DPI can all be optionally 313 * returned if the parameter is non-NULL. 314 * 315 * \return 0 on success, or -1 if no DPI information is available or the index is out of range. 316 * 317 * \sa SDL_GetNumVideoDisplays() 318 */ 319 extern DECLSPEC int SDLCALL SDL_GetDisplayDPI(int displayIndex, float * ddpi, float * hdpi, float * vdpi); 320 321 /** 322 * \brief Get the usable desktop area represented by a display, with the 323 * primary display located at 0,0 324 * 325 * This is the same area as SDL_GetDisplayBounds() reports, but with portions 326 * reserved by the system removed. For example, on Mac OS X, this subtracts 327 * the area occupied by the menu bar and dock. 328 * 329 * Setting a window to be fullscreen generally bypasses these unusable areas, 330 * so these are good guidelines for the maximum space available to a 331 * non-fullscreen window. 332 * 333 * \return 0 on success, or -1 if the index is out of range. 334 * 335 * \sa SDL_GetDisplayBounds() 336 * \sa SDL_GetNumVideoDisplays() 337 */ 338 extern DECLSPEC int SDLCALL SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect * rect); 339 340 /** 341 * \brief Returns the number of available display modes. 342 * 343 * \sa SDL_GetDisplayMode() 344 */ 345 extern DECLSPEC int SDLCALL SDL_GetNumDisplayModes(int displayIndex); 346 347 /** 348 * \brief Fill in information about a specific display mode. 349 * 350 * \note The display modes are sorted in this priority: 351 * \li bits per pixel -> more colors to fewer colors 352 * \li width -> largest to smallest 353 * \li height -> largest to smallest 354 * \li refresh rate -> highest to lowest 355 * 356 * \sa SDL_GetNumDisplayModes() 357 */ 358 extern DECLSPEC int SDLCALL SDL_GetDisplayMode(int displayIndex, int modeIndex, 359 SDL_DisplayMode * mode); 360 361 /** 362 * \brief Fill in information about the desktop display mode. 363 */ 364 extern DECLSPEC int SDLCALL SDL_GetDesktopDisplayMode(int displayIndex, SDL_DisplayMode * mode); 365 366 /** 367 * \brief Fill in information about the current display mode. 368 */ 369 extern DECLSPEC int SDLCALL SDL_GetCurrentDisplayMode(int displayIndex, SDL_DisplayMode * mode); 370 371 372 /** 373 * \brief Get the closest match to the requested display mode. 374 * 375 * \param displayIndex The index of display from which mode should be queried. 376 * \param mode The desired display mode 377 * \param closest A pointer to a display mode to be filled in with the closest 378 * match of the available display modes. 379 * 380 * \return The passed in value \c closest, or NULL if no matching video mode 381 * was available. 382 * 383 * The available display modes are scanned, and \c closest is filled in with the 384 * closest mode matching the requested mode and returned. The mode format and 385 * refresh_rate default to the desktop mode if they are 0. The modes are 386 * scanned with size being first priority, format being second priority, and 387 * finally checking the refresh_rate. If all the available modes are too 388 * small, then NULL is returned. 389 * 390 * \sa SDL_GetNumDisplayModes() 391 * \sa SDL_GetDisplayMode() 392 */ 393 extern DECLSPEC SDL_DisplayMode * SDLCALL SDL_GetClosestDisplayMode(int displayIndex, const SDL_DisplayMode * mode, SDL_DisplayMode * closest); 394 395 /** 396 * \brief Get the display index associated with a window. 397 * 398 * \return the display index of the display containing the center of the 399 * window, or -1 on error. 400 */ 401 extern DECLSPEC int SDLCALL SDL_GetWindowDisplayIndex(SDL_Window * window); 402 403 /** 404 * \brief Set the display mode used when a fullscreen window is visible. 405 * 406 * By default the window's dimensions and the desktop format and refresh rate 407 * are used. 408 * 409 * \param window The window for which the display mode should be set. 410 * \param mode The mode to use, or NULL for the default mode. 411 * 412 * \return 0 on success, or -1 if setting the display mode failed. 413 * 414 * \sa SDL_GetWindowDisplayMode() 415 * \sa SDL_SetWindowFullscreen() 416 */ 417 extern DECLSPEC int SDLCALL SDL_SetWindowDisplayMode(SDL_Window * window, 418 const SDL_DisplayMode 419 * mode); 420 421 /** 422 * \brief Fill in information about the display mode used when a fullscreen 423 * window is visible. 424 * 425 * \sa SDL_SetWindowDisplayMode() 426 * \sa SDL_SetWindowFullscreen() 427 */ 428 extern DECLSPEC int SDLCALL SDL_GetWindowDisplayMode(SDL_Window * window, 429 SDL_DisplayMode * mode); 430 431 /** 432 * \brief Get the pixel format associated with the window. 433 */ 434 extern DECLSPEC Uint32 SDLCALL SDL_GetWindowPixelFormat(SDL_Window * window); 435 436 /** 437 * \brief Create a window with the specified position, dimensions, and flags. 438 * 439 * \param title The title of the window, in UTF-8 encoding. 440 * \param x The x position of the window, ::SDL_WINDOWPOS_CENTERED, or 441 * ::SDL_WINDOWPOS_UNDEFINED. 442 * \param y The y position of the window, ::SDL_WINDOWPOS_CENTERED, or 443 * ::SDL_WINDOWPOS_UNDEFINED. 444 * \param w The width of the window, in screen coordinates. 445 * \param h The height of the window, in screen coordinates. 446 * \param flags The flags for the window, a mask of any of the following: 447 * ::SDL_WINDOW_FULLSCREEN, ::SDL_WINDOW_OPENGL, 448 * ::SDL_WINDOW_HIDDEN, ::SDL_WINDOW_BORDERLESS, 449 * ::SDL_WINDOW_RESIZABLE, ::SDL_WINDOW_MAXIMIZED, 450 * ::SDL_WINDOW_MINIMIZED, ::SDL_WINDOW_INPUT_GRABBED, 451 * ::SDL_WINDOW_ALLOW_HIGHDPI. 452 * 453 * \return The created window, or NULL if window creation failed. 454 * 455 * If the window is created with the SDL_WINDOW_ALLOW_HIGHDPI flag, its size 456 * in pixels may differ from its size in screen coordinates on platforms with 457 * high-DPI support (e.g. iOS and Mac OS X). Use SDL_GetWindowSize() to query 458 * the client area's size in screen coordinates, and SDL_GL_GetDrawableSize() 459 * or SDL_GetRendererOutputSize() to query the drawable size in pixels. 460 * 461 * \sa SDL_DestroyWindow() 462 */ 463 extern DECLSPEC SDL_Window * SDLCALL SDL_CreateWindow(const char *title, 464 int x, int y, int w, 465 int h, Uint32 flags); 466 467 /** 468 * \brief Create an SDL window from an existing native window. 469 * 470 * \param data A pointer to driver-dependent window creation data 471 * 472 * \return The created window, or NULL if window creation failed. 473 * 474 * \sa SDL_DestroyWindow() 475 */ 476 extern DECLSPEC SDL_Window * SDLCALL SDL_CreateWindowFrom(const void *data); 477 478 /** 479 * \brief Get the numeric ID of a window, for logging purposes. 480 */ 481 extern DECLSPEC Uint32 SDLCALL SDL_GetWindowID(SDL_Window * window); 482 483 /** 484 * \brief Get a window from a stored ID, or NULL if it doesn't exist. 485 */ 486 extern DECLSPEC SDL_Window * SDLCALL SDL_GetWindowFromID(Uint32 id); 487 488 /** 489 * \brief Get the window flags. 490 */ 491 extern DECLSPEC Uint32 SDLCALL SDL_GetWindowFlags(SDL_Window * window); 492 493 /** 494 * \brief Set the title of a window, in UTF-8 format. 495 * 496 * \sa SDL_GetWindowTitle() 497 */ 498 extern DECLSPEC void SDLCALL SDL_SetWindowTitle(SDL_Window * window, 499 const char *title); 500 501 /** 502 * \brief Get the title of a window, in UTF-8 format. 503 * 504 * \sa SDL_SetWindowTitle() 505 */ 506 extern DECLSPEC const char *SDLCALL SDL_GetWindowTitle(SDL_Window * window); 507 508 /** 509 * \brief Set the icon for a window. 510 * 511 * \param window The window for which the icon should be set. 512 * \param icon The icon for the window. 513 */ 514 extern DECLSPEC void SDLCALL SDL_SetWindowIcon(SDL_Window * window, 515 SDL_Surface * icon); 516 517 /** 518 * \brief Associate an arbitrary named pointer with a window. 519 * 520 * \param window The window to associate with the pointer. 521 * \param name The name of the pointer. 522 * \param userdata The associated pointer. 523 * 524 * \return The previous value associated with 'name' 525 * 526 * \note The name is case-sensitive. 527 * 528 * \sa SDL_GetWindowData() 529 */ 530 extern DECLSPEC void* SDLCALL SDL_SetWindowData(SDL_Window * window, 531 const char *name, 532 void *userdata); 533 534 /** 535 * \brief Retrieve the data pointer associated with a window. 536 * 537 * \param window The window to query. 538 * \param name The name of the pointer. 539 * 540 * \return The value associated with 'name' 541 * 542 * \sa SDL_SetWindowData() 543 */ 544 extern DECLSPEC void *SDLCALL SDL_GetWindowData(SDL_Window * window, 545 const char *name); 546 547 /** 548 * \brief Set the position of a window. 549 * 550 * \param window The window to reposition. 551 * \param x The x coordinate of the window in screen coordinates, or 552 * ::SDL_WINDOWPOS_CENTERED or ::SDL_WINDOWPOS_UNDEFINED. 553 * \param y The y coordinate of the window in screen coordinates, or 554 * ::SDL_WINDOWPOS_CENTERED or ::SDL_WINDOWPOS_UNDEFINED. 555 * 556 * \note The window coordinate origin is the upper left of the display. 557 * 558 * \sa SDL_GetWindowPosition() 559 */ 560 extern DECLSPEC void SDLCALL SDL_SetWindowPosition(SDL_Window * window, 561 int x, int y); 562 563 /** 564 * \brief Get the position of a window. 565 * 566 * \param window The window to query. 567 * \param x Pointer to variable for storing the x position, in screen 568 * coordinates. May be NULL. 569 * \param y Pointer to variable for storing the y position, in screen 570 * coordinates. May be NULL. 571 * 572 * \sa SDL_SetWindowPosition() 573 */ 574 extern DECLSPEC void SDLCALL SDL_GetWindowPosition(SDL_Window * window, 575 int *x, int *y); 576 577 /** 578 * \brief Set the size of a window's client area. 579 * 580 * \param window The window to resize. 581 * \param w The width of the window, in screen coordinates. Must be >0. 582 * \param h The height of the window, in screen coordinates. Must be >0. 583 * 584 * \note You can't change the size of a fullscreen window, it automatically 585 * matches the size of the display mode. 586 * 587 * The window size in screen coordinates may differ from the size in pixels, if 588 * the window was created with SDL_WINDOW_ALLOW_HIGHDPI on a platform with 589 * high-dpi support (e.g. iOS or OS X). Use SDL_GL_GetDrawableSize() or 590 * SDL_GetRendererOutputSize() to get the real client area size in pixels. 591 * 592 * \sa SDL_GetWindowSize() 593 */ 594 extern DECLSPEC void SDLCALL SDL_SetWindowSize(SDL_Window * window, int w, 595 int h); 596 597 /** 598 * \brief Get the size of a window's client area. 599 * 600 * \param window The window to query. 601 * \param w Pointer to variable for storing the width, in screen 602 * coordinates. May be NULL. 603 * \param h Pointer to variable for storing the height, in screen 604 * coordinates. May be NULL. 605 * 606 * The window size in screen coordinates may differ from the size in pixels, if 607 * the window was created with SDL_WINDOW_ALLOW_HIGHDPI on a platform with 608 * high-dpi support (e.g. iOS or OS X). Use SDL_GL_GetDrawableSize() or 609 * SDL_GetRendererOutputSize() to get the real client area size in pixels. 610 * 611 * \sa SDL_SetWindowSize() 612 */ 613 extern DECLSPEC void SDLCALL SDL_GetWindowSize(SDL_Window * window, int *w, 614 int *h); 615 616 /** 617 * \brief Get the size of a window's borders (decorations) around the client area. 618 * 619 * \param window The window to query. 620 * \param top Pointer to variable for storing the size of the top border. NULL is permitted. 621 * \param left Pointer to variable for storing the size of the left border. NULL is permitted. 622 * \param bottom Pointer to variable for storing the size of the bottom border. NULL is permitted. 623 * \param right Pointer to variable for storing the size of the right border. NULL is permitted. 624 * 625 * \return 0 on success, or -1 if getting this information is not supported. 626 * 627 * \note if this function fails (returns -1), the size values will be 628 * initialized to 0, 0, 0, 0 (if a non-NULL pointer is provided), as 629 * if the window in question was borderless. 630 */ 631 extern DECLSPEC int SDLCALL SDL_GetWindowBordersSize(SDL_Window * window, 632 int *top, int *left, 633 int *bottom, int *right); 634 635 /** 636 * \brief Set the minimum size of a window's client area. 637 * 638 * \param window The window to set a new minimum size. 639 * \param min_w The minimum width of the window, must be >0 640 * \param min_h The minimum height of the window, must be >0 641 * 642 * \note You can't change the minimum size of a fullscreen window, it 643 * automatically matches the size of the display mode. 644 * 645 * \sa SDL_GetWindowMinimumSize() 646 * \sa SDL_SetWindowMaximumSize() 647 */ 648 extern DECLSPEC void SDLCALL SDL_SetWindowMinimumSize(SDL_Window * window, 649 int min_w, int min_h); 650 651 /** 652 * \brief Get the minimum size of a window's client area. 653 * 654 * \param window The window to query. 655 * \param w Pointer to variable for storing the minimum width, may be NULL 656 * \param h Pointer to variable for storing the minimum height, may be NULL 657 * 658 * \sa SDL_GetWindowMaximumSize() 659 * \sa SDL_SetWindowMinimumSize() 660 */ 661 extern DECLSPEC void SDLCALL SDL_GetWindowMinimumSize(SDL_Window * window, 662 int *w, int *h); 663 664 /** 665 * \brief Set the maximum size of a window's client area. 666 * 667 * \param window The window to set a new maximum size. 668 * \param max_w The maximum width of the window, must be >0 669 * \param max_h The maximum height of the window, must be >0 670 * 671 * \note You can't change the maximum size of a fullscreen window, it 672 * automatically matches the size of the display mode. 673 * 674 * \sa SDL_GetWindowMaximumSize() 675 * \sa SDL_SetWindowMinimumSize() 676 */ 677 extern DECLSPEC void SDLCALL SDL_SetWindowMaximumSize(SDL_Window * window, 678 int max_w, int max_h); 679 680 /** 681 * \brief Get the maximum size of a window's client area. 682 * 683 * \param window The window to query. 684 * \param w Pointer to variable for storing the maximum width, may be NULL 685 * \param h Pointer to variable for storing the maximum height, may be NULL 686 * 687 * \sa SDL_GetWindowMinimumSize() 688 * \sa SDL_SetWindowMaximumSize() 689 */ 690 extern DECLSPEC void SDLCALL SDL_GetWindowMaximumSize(SDL_Window * window, 691 int *w, int *h); 692 693 /** 694 * \brief Set the border state of a window. 695 * 696 * This will add or remove the window's SDL_WINDOW_BORDERLESS flag and 697 * add or remove the border from the actual window. This is a no-op if the 698 * window's border already matches the requested state. 699 * 700 * \param window The window of which to change the border state. 701 * \param bordered SDL_FALSE to remove border, SDL_TRUE to add border. 702 * 703 * \note You can't change the border state of a fullscreen window. 704 * 705 * \sa SDL_GetWindowFlags() 706 */ 707 extern DECLSPEC void SDLCALL SDL_SetWindowBordered(SDL_Window * window, 708 SDL_bool bordered); 709 710 /** 711 * \brief Set the user-resizable state of a window. 712 * 713 * This will add or remove the window's SDL_WINDOW_RESIZABLE flag and 714 * allow/disallow user resizing of the window. This is a no-op if the 715 * window's resizable state already matches the requested state. 716 * 717 * \param window The window of which to change the resizable state. 718 * \param resizable SDL_TRUE to allow resizing, SDL_FALSE to disallow. 719 * 720 * \note You can't change the resizable state of a fullscreen window. 721 * 722 * \sa SDL_GetWindowFlags() 723 */ 724 extern DECLSPEC void SDLCALL SDL_SetWindowResizable(SDL_Window * window, 725 SDL_bool resizable); 726 727 /** 728 * \brief Show a window. 729 * 730 * \sa SDL_HideWindow() 731 */ 732 extern DECLSPEC void SDLCALL SDL_ShowWindow(SDL_Window * window); 733 734 /** 735 * \brief Hide a window. 736 * 737 * \sa SDL_ShowWindow() 738 */ 739 extern DECLSPEC void SDLCALL SDL_HideWindow(SDL_Window * window); 740 741 /** 742 * \brief Raise a window above other windows and set the input focus. 743 */ 744 extern DECLSPEC void SDLCALL SDL_RaiseWindow(SDL_Window * window); 745 746 /** 747 * \brief Make a window as large as possible. 748 * 749 * \sa SDL_RestoreWindow() 750 */ 751 extern DECLSPEC void SDLCALL SDL_MaximizeWindow(SDL_Window * window); 752 753 /** 754 * \brief Minimize a window to an iconic representation. 755 * 756 * \sa SDL_RestoreWindow() 757 */ 758 extern DECLSPEC void SDLCALL SDL_MinimizeWindow(SDL_Window * window); 759 760 /** 761 * \brief Restore the size and position of a minimized or maximized window. 762 * 763 * \sa SDL_MaximizeWindow() 764 * \sa SDL_MinimizeWindow() 765 */ 766 extern DECLSPEC void SDLCALL SDL_RestoreWindow(SDL_Window * window); 767 768 /** 769 * \brief Set a window's fullscreen state. 770 * 771 * \return 0 on success, or -1 if setting the display mode failed. 772 * 773 * \sa SDL_SetWindowDisplayMode() 774 * \sa SDL_GetWindowDisplayMode() 775 */ 776 extern DECLSPEC int SDLCALL SDL_SetWindowFullscreen(SDL_Window * window, 777 Uint32 flags); 778 779 /** 780 * \brief Get the SDL surface associated with the window. 781 * 782 * \return The window's framebuffer surface, or NULL on error. 783 * 784 * A new surface will be created with the optimal format for the window, 785 * if necessary. This surface will be freed when the window is destroyed. 786 * 787 * \note You may not combine this with 3D or the rendering API on this window. 788 * 789 * \sa SDL_UpdateWindowSurface() 790 * \sa SDL_UpdateWindowSurfaceRects() 791 */ 792 extern DECLSPEC SDL_Surface * SDLCALL SDL_GetWindowSurface(SDL_Window * window); 793 794 /** 795 * \brief Copy the window surface to the screen. 796 * 797 * \return 0 on success, or -1 on error. 798 * 799 * \sa SDL_GetWindowSurface() 800 * \sa SDL_UpdateWindowSurfaceRects() 801 */ 802 extern DECLSPEC int SDLCALL SDL_UpdateWindowSurface(SDL_Window * window); 803 804 /** 805 * \brief Copy a number of rectangles on the window surface to the screen. 806 * 807 * \return 0 on success, or -1 on error. 808 * 809 * \sa SDL_GetWindowSurface() 810 * \sa SDL_UpdateWindowSurface() 811 */ 812 extern DECLSPEC int SDLCALL SDL_UpdateWindowSurfaceRects(SDL_Window * window, 813 const SDL_Rect * rects, 814 int numrects); 815 816 /** 817 * \brief Set a window's input grab mode. 818 * 819 * \param window The window for which the input grab mode should be set. 820 * \param grabbed This is SDL_TRUE to grab input, and SDL_FALSE to release input. 821 * 822 * If the caller enables a grab while another window is currently grabbed, 823 * the other window loses its grab in favor of the caller's window. 824 * 825 * \sa SDL_GetWindowGrab() 826 */ 827 extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_Window * window, 828 SDL_bool grabbed); 829 830 /** 831 * \brief Get a window's input grab mode. 832 * 833 * \return This returns SDL_TRUE if input is grabbed, and SDL_FALSE otherwise. 834 * 835 * \sa SDL_SetWindowGrab() 836 */ 837 extern DECLSPEC SDL_bool SDLCALL SDL_GetWindowGrab(SDL_Window * window); 838 839 /** 840 * \brief Get the window that currently has an input grab enabled. 841 * 842 * \return This returns the window if input is grabbed, and NULL otherwise. 843 * 844 * \sa SDL_SetWindowGrab() 845 */ 846 extern DECLSPEC SDL_Window * SDLCALL SDL_GetGrabbedWindow(void); 847 848 /** 849 * \brief Set the brightness (gamma correction) for a window. 850 * 851 * \return 0 on success, or -1 if setting the brightness isn't supported. 852 * 853 * \sa SDL_GetWindowBrightness() 854 * \sa SDL_SetWindowGammaRamp() 855 */ 856 extern DECLSPEC int SDLCALL SDL_SetWindowBrightness(SDL_Window * window, float brightness); 857 858 /** 859 * \brief Get the brightness (gamma correction) for a window. 860 * 861 * \return The last brightness value passed to SDL_SetWindowBrightness() 862 * 863 * \sa SDL_SetWindowBrightness() 864 */ 865 extern DECLSPEC float SDLCALL SDL_GetWindowBrightness(SDL_Window * window); 866 867 /** 868 * \brief Set the opacity for a window 869 * 870 * \param window The window which will be made transparent or opaque 871 * \param opacity Opacity (0.0f - transparent, 1.0f - opaque) This will be 872 * clamped internally between 0.0f and 1.0f. 873 * 874 * \return 0 on success, or -1 if setting the opacity isn't supported. 875 * 876 * \sa SDL_GetWindowOpacity() 877 */ 878 extern DECLSPEC int SDLCALL SDL_SetWindowOpacity(SDL_Window * window, float opacity); 879 880 /** 881 * \brief Get the opacity of a window. 882 * 883 * If transparency isn't supported on this platform, opacity will be reported 884 * as 1.0f without error. 885 * 886 * \param window The window in question. 887 * \param out_opacity Opacity (0.0f - transparent, 1.0f - opaque) 888 * 889 * \return 0 on success, or -1 on error (invalid window, etc). 890 * 891 * \sa SDL_SetWindowOpacity() 892 */ 893 extern DECLSPEC int SDLCALL SDL_GetWindowOpacity(SDL_Window * window, float * out_opacity); 894 895 /** 896 * \brief Sets the window as a modal for another window (TODO: reconsider this function and/or its name) 897 * 898 * \param modal_window The window that should be modal 899 * \param parent_window The parent window 900 * 901 * \return 0 on success, or -1 otherwise. 902 */ 903 extern DECLSPEC int SDLCALL SDL_SetWindowModalFor(SDL_Window * modal_window, SDL_Window * parent_window); 904 905 /** 906 * \brief Explicitly sets input focus to the window. 907 * 908 * You almost certainly want SDL_RaiseWindow() instead of this function. Use 909 * this with caution, as you might give focus to a window that's completely 910 * obscured by other windows. 911 * 912 * \param window The window that should get the input focus 913 * 914 * \return 0 on success, or -1 otherwise. 915 * \sa SDL_RaiseWindow() 916 */ 917 extern DECLSPEC int SDLCALL SDL_SetWindowInputFocus(SDL_Window * window); 918 919 /** 920 * \brief Set the gamma ramp for a window. 921 * 922 * \param window The window for which the gamma ramp should be set. 923 * \param red The translation table for the red channel, or NULL. 924 * \param green The translation table for the green channel, or NULL. 925 * \param blue The translation table for the blue channel, or NULL. 926 * 927 * \return 0 on success, or -1 if gamma ramps are unsupported. 928 * 929 * Set the gamma translation table for the red, green, and blue channels 930 * of the video hardware. Each table is an array of 256 16-bit quantities, 931 * representing a mapping between the input and output for that channel. 932 * The input is the index into the array, and the output is the 16-bit 933 * gamma value at that index, scaled to the output color precision. 934 * 935 * \sa SDL_GetWindowGammaRamp() 936 */ 937 extern DECLSPEC int SDLCALL SDL_SetWindowGammaRamp(SDL_Window * window, 938 const Uint16 * red, 939 const Uint16 * green, 940 const Uint16 * blue); 941 942 /** 943 * \brief Get the gamma ramp for a window. 944 * 945 * \param window The window from which the gamma ramp should be queried. 946 * \param red A pointer to a 256 element array of 16-bit quantities to hold 947 * the translation table for the red channel, or NULL. 948 * \param green A pointer to a 256 element array of 16-bit quantities to hold 949 * the translation table for the green channel, or NULL. 950 * \param blue A pointer to a 256 element array of 16-bit quantities to hold 951 * the translation table for the blue channel, or NULL. 952 * 953 * \return 0 on success, or -1 if gamma ramps are unsupported. 954 * 955 * \sa SDL_SetWindowGammaRamp() 956 */ 957 extern DECLSPEC int SDLCALL SDL_GetWindowGammaRamp(SDL_Window * window, 958 Uint16 * red, 959 Uint16 * green, 960 Uint16 * blue); 961 962 /** 963 * \brief Possible return values from the SDL_HitTest callback. 964 * 965 * \sa SDL_HitTest 966 */ 967 typedef enum 968 { 969 SDL_HITTEST_NORMAL, /**< Region is normal. No special properties. */ 970 SDL_HITTEST_DRAGGABLE, /**< Region can drag entire window. */ 971 SDL_HITTEST_RESIZE_TOPLEFT, 972 SDL_HITTEST_RESIZE_TOP, 973 SDL_HITTEST_RESIZE_TOPRIGHT, 974 SDL_HITTEST_RESIZE_RIGHT, 975 SDL_HITTEST_RESIZE_BOTTOMRIGHT, 976 SDL_HITTEST_RESIZE_BOTTOM, 977 SDL_HITTEST_RESIZE_BOTTOMLEFT, 978 SDL_HITTEST_RESIZE_LEFT 979 } SDL_HitTestResult; 980 981 /** 982 * \brief Callback used for hit-testing. 983 * 984 * \sa SDL_SetWindowHitTest 985 */ 986 typedef SDL_HitTestResult (SDLCALL *SDL_HitTest)(SDL_Window *win, 987 const SDL_Point *area, 988 void *data); 989 990 /** 991 * \brief Provide a callback that decides if a window region has special properties. 992 * 993 * Normally windows are dragged and resized by decorations provided by the 994 * system window manager (a title bar, borders, etc), but for some apps, it 995 * makes sense to drag them from somewhere else inside the window itself; for 996 * example, one might have a borderless window that wants to be draggable 997 * from any part, or simulate its own title bar, etc. 998 * 999 * This function lets the app provide a callback that designates pieces of 1000 * a given window as special. This callback is run during event processing 1001 * if we need to tell the OS to treat a region of the window specially; the 1002 * use of this callback is known as "hit testing." 1003 * 1004 * Mouse input may not be delivered to your application if it is within 1005 * a special area; the OS will often apply that input to moving the window or 1006 * resizing the window and not deliver it to the application. 1007 * 1008 * Specifying NULL for a callback disables hit-testing. Hit-testing is 1009 * disabled by default. 1010 * 1011 * Platforms that don't support this functionality will return -1 1012 * unconditionally, even if you're attempting to disable hit-testing. 1013 * 1014 * Your callback may fire at any time, and its firing does not indicate any 1015 * specific behavior (for example, on Windows, this certainly might fire 1016 * when the OS is deciding whether to drag your window, but it fires for lots 1017 * of other reasons, too, some unrelated to anything you probably care about 1018 * _and when the mouse isn't actually at the location it is testing_). 1019 * Since this can fire at any time, you should try to keep your callback 1020 * efficient, devoid of allocations, etc. 1021 * 1022 * \param window The window to set hit-testing on. 1023 * \param callback The callback to call when doing a hit-test. 1024 * \param callback_data An app-defined void pointer passed to the callback. 1025 * \return 0 on success, -1 on error (including unsupported). 1026 */ 1027 extern DECLSPEC int SDLCALL SDL_SetWindowHitTest(SDL_Window * window, 1028 SDL_HitTest callback, 1029 void *callback_data); 1030 1031 /** 1032 * \brief Destroy a window. 1033 */ 1034 extern DECLSPEC void SDLCALL SDL_DestroyWindow(SDL_Window * window); 1035 1036 1037 /** 1038 * \brief Returns whether the screensaver is currently enabled (default off). 1039 * 1040 * \sa SDL_EnableScreenSaver() 1041 * \sa SDL_DisableScreenSaver() 1042 */ 1043 extern DECLSPEC SDL_bool SDLCALL SDL_IsScreenSaverEnabled(void); 1044 1045 /** 1046 * \brief Allow the screen to be blanked by a screensaver 1047 * 1048 * \sa SDL_IsScreenSaverEnabled() 1049 * \sa SDL_DisableScreenSaver() 1050 */ 1051 extern DECLSPEC void SDLCALL SDL_EnableScreenSaver(void); 1052 1053 /** 1054 * \brief Prevent the screen from being blanked by a screensaver 1055 * 1056 * \sa SDL_IsScreenSaverEnabled() 1057 * \sa SDL_EnableScreenSaver() 1058 */ 1059 extern DECLSPEC void SDLCALL SDL_DisableScreenSaver(void); 1060 1061 1062 /** 1063 * \name OpenGL support functions 1064 */ 1065 /* @{ */ 1066 1067 /** 1068 * \brief Dynamically load an OpenGL library. 1069 * 1070 * \param path The platform dependent OpenGL library name, or NULL to open the 1071 * default OpenGL library. 1072 * 1073 * \return 0 on success, or -1 if the library couldn't be loaded. 1074 * 1075 * This should be done after initializing the video driver, but before 1076 * creating any OpenGL windows. If no OpenGL library is loaded, the default 1077 * library will be loaded upon creation of the first OpenGL window. 1078 * 1079 * \note If you do this, you need to retrieve all of the GL functions used in 1080 * your program from the dynamic library using SDL_GL_GetProcAddress(). 1081 * 1082 * \sa SDL_GL_GetProcAddress() 1083 * \sa SDL_GL_UnloadLibrary() 1084 */ 1085 extern DECLSPEC int SDLCALL SDL_GL_LoadLibrary(const char *path); 1086 1087 /** 1088 * \brief Get the address of an OpenGL function. 1089 */ 1090 extern DECLSPEC void *SDLCALL SDL_GL_GetProcAddress(const char *proc); 1091 1092 /** 1093 * \brief Unload the OpenGL library previously loaded by SDL_GL_LoadLibrary(). 1094 * 1095 * \sa SDL_GL_LoadLibrary() 1096 */ 1097 extern DECLSPEC void SDLCALL SDL_GL_UnloadLibrary(void); 1098 1099 /** 1100 * \brief Return true if an OpenGL extension is supported for the current 1101 * context. 1102 */ 1103 extern DECLSPEC SDL_bool SDLCALL SDL_GL_ExtensionSupported(const char 1104 *extension); 1105 1106 /** 1107 * \brief Reset all previously set OpenGL context attributes to their default values 1108 */ 1109 extern DECLSPEC void SDLCALL SDL_GL_ResetAttributes(void); 1110 1111 /** 1112 * \brief Set an OpenGL window attribute before window creation. 1113 */ 1114 extern DECLSPEC int SDLCALL SDL_GL_SetAttribute(SDL_GLattr attr, int value); 1115 1116 /** 1117 * \brief Get the actual value for an attribute from the current context. 1118 */ 1119 extern DECLSPEC int SDLCALL SDL_GL_GetAttribute(SDL_GLattr attr, int *value); 1120 1121 /** 1122 * \brief Create an OpenGL context for use with an OpenGL window, and make it 1123 * current. 1124 * 1125 * \sa SDL_GL_DeleteContext() 1126 */ 1127 extern DECLSPEC SDL_GLContext SDLCALL SDL_GL_CreateContext(SDL_Window * 1128 window); 1129 1130 /** 1131 * \brief Set up an OpenGL context for rendering into an OpenGL window. 1132 * 1133 * \note The context must have been created with a compatible window. 1134 */ 1135 extern DECLSPEC int SDLCALL SDL_GL_MakeCurrent(SDL_Window * window, 1136 SDL_GLContext context); 1137 1138 /** 1139 * \brief Get the currently active OpenGL window. 1140 */ 1141 extern DECLSPEC SDL_Window* SDLCALL SDL_GL_GetCurrentWindow(void); 1142 1143 /** 1144 * \brief Get the currently active OpenGL context. 1145 */ 1146 extern DECLSPEC SDL_GLContext SDLCALL SDL_GL_GetCurrentContext(void); 1147 1148 /** 1149 * \brief Get the size of a window's underlying drawable in pixels (for use 1150 * with glViewport). 1151 * 1152 * \param window Window from which the drawable size should be queried 1153 * \param w Pointer to variable for storing the width in pixels, may be NULL 1154 * \param h Pointer to variable for storing the height in pixels, may be NULL 1155 * 1156 * This may differ from SDL_GetWindowSize() if we're rendering to a high-DPI 1157 * drawable, i.e. the window was created with SDL_WINDOW_ALLOW_HIGHDPI on a 1158 * platform with high-DPI support (Apple calls this "Retina"), and not disabled 1159 * by the SDL_HINT_VIDEO_HIGHDPI_DISABLED hint. 1160 * 1161 * \sa SDL_GetWindowSize() 1162 * \sa SDL_CreateWindow() 1163 */ 1164 extern DECLSPEC void SDLCALL SDL_GL_GetDrawableSize(SDL_Window * window, int *w, 1165 int *h); 1166 1167 /** 1168 * \brief Set the swap interval for the current OpenGL context. 1169 * 1170 * \param interval 0 for immediate updates, 1 for updates synchronized with the 1171 * vertical retrace. If the system supports it, you may 1172 * specify -1 to allow late swaps to happen immediately 1173 * instead of waiting for the next retrace. 1174 * 1175 * \return 0 on success, or -1 if setting the swap interval is not supported. 1176 * 1177 * \sa SDL_GL_GetSwapInterval() 1178 */ 1179 extern DECLSPEC int SDLCALL SDL_GL_SetSwapInterval(int interval); 1180 1181 /** 1182 * \brief Get the swap interval for the current OpenGL context. 1183 * 1184 * \return 0 if there is no vertical retrace synchronization, 1 if the buffer 1185 * swap is synchronized with the vertical retrace, and -1 if late 1186 * swaps happen immediately instead of waiting for the next retrace. 1187 * If the system can't determine the swap interval, or there isn't a 1188 * valid current context, this will return 0 as a safe default. 1189 * 1190 * \sa SDL_GL_SetSwapInterval() 1191 */ 1192 extern DECLSPEC int SDLCALL SDL_GL_GetSwapInterval(void); 1193 1194 /** 1195 * \brief Swap the OpenGL buffers for a window, if double-buffering is 1196 * supported. 1197 */ 1198 extern DECLSPEC void SDLCALL SDL_GL_SwapWindow(SDL_Window * window); 1199 1200 /** 1201 * \brief Delete an OpenGL context. 1202 * 1203 * \sa SDL_GL_CreateContext() 1204 */ 1205 extern DECLSPEC void SDLCALL SDL_GL_DeleteContext(SDL_GLContext context); 1206 1207 /* @} *//* OpenGL support functions */ 1208 1209 1210 /* Ends C function definitions when using C++ */ 1211 #ifdef __cplusplus 1212 } 1213 #endif 1214 #include "close_code.h" 1215 1216 #endif /* _SDL_video_h */ 1217 1218 /* vi: set ts=4 sw=4 expandtab: */ 1219