Mercurial > sdl-ios-xcode
annotate include/SDL_video.h @ 4281:6e3c19f8ab96 SDL-1.2
SDL 1.2.14 is a recommended update.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 07 Oct 2009 08:03:32 +0000 |
| parents | 4c4113c2162c |
| children |
| rev | line source |
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| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 4217 | 23 /** @file SDL_video.h |
| 24 * Header file for access to the SDL raw framebuffer window | |
| 25 */ | |
| 0 | 26 |
| 27 #ifndef _SDL_video_h | |
| 28 #define _SDL_video_h | |
| 29 | |
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30 #include "SDL_stdinc.h" |
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31 #include "SDL_error.h" |
| 0 | 32 #include "SDL_rwops.h" |
| 33 | |
| 34 #include "begin_code.h" | |
| 35 /* Set up for C function definitions, even when using C++ */ | |
| 36 #ifdef __cplusplus | |
| 37 extern "C" { | |
| 38 #endif | |
| 39 | |
| 4217 | 40 /** @name Transparency definitions |
| 41 * These define alpha as the opacity of a surface | |
| 42 */ | |
| 43 /*@{*/ | |
| 0 | 44 #define SDL_ALPHA_OPAQUE 255 |
| 45 #define SDL_ALPHA_TRANSPARENT 0 | |
| 4217 | 46 /*@}*/ |
| 0 | 47 |
| 4217 | 48 /** @name Useful data types */ |
| 49 /*@{*/ | |
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50 typedef struct SDL_Rect { |
| 0 | 51 Sint16 x, y; |
| 52 Uint16 w, h; | |
| 53 } SDL_Rect; | |
| 54 | |
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55 typedef struct SDL_Color { |
| 0 | 56 Uint8 r; |
| 57 Uint8 g; | |
| 58 Uint8 b; | |
| 59 Uint8 unused; | |
| 60 } SDL_Color; | |
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61 #define SDL_Colour SDL_Color |
| 0 | 62 |
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63 typedef struct SDL_Palette { |
| 0 | 64 int ncolors; |
| 65 SDL_Color *colors; | |
| 66 } SDL_Palette; | |
| 4217 | 67 /*@}*/ |
| 0 | 68 |
| 4217 | 69 /** Everything in the pixel format structure is read-only */ |
| 0 | 70 typedef struct SDL_PixelFormat { |
| 71 SDL_Palette *palette; | |
| 72 Uint8 BitsPerPixel; | |
| 73 Uint8 BytesPerPixel; | |
| 74 Uint8 Rloss; | |
| 75 Uint8 Gloss; | |
| 76 Uint8 Bloss; | |
| 77 Uint8 Aloss; | |
| 78 Uint8 Rshift; | |
| 79 Uint8 Gshift; | |
| 80 Uint8 Bshift; | |
| 81 Uint8 Ashift; | |
| 82 Uint32 Rmask; | |
| 83 Uint32 Gmask; | |
| 84 Uint32 Bmask; | |
| 85 Uint32 Amask; | |
| 86 | |
| 4217 | 87 /** RGB color key information */ |
| 0 | 88 Uint32 colorkey; |
| 4217 | 89 /** Alpha value information (per-surface alpha) */ |
| 0 | 90 Uint8 alpha; |
| 91 } SDL_PixelFormat; | |
| 92 | |
| 4217 | 93 /** This structure should be treated as read-only, except for 'pixels', |
| 94 * which, if not NULL, contains the raw pixel data for the surface. | |
| 95 */ | |
| 0 | 96 typedef struct SDL_Surface { |
| 4217 | 97 Uint32 flags; /**< Read-only */ |
| 98 SDL_PixelFormat *format; /**< Read-only */ | |
| 99 int w, h; /**< Read-only */ | |
| 100 Uint16 pitch; /**< Read-only */ | |
| 101 void *pixels; /**< Read-write */ | |
| 102 int offset; /**< Private */ | |
| 0 | 103 |
| 4217 | 104 /** Hardware-specific surface info */ |
| 0 | 105 struct private_hwdata *hwdata; |
| 106 | |
| 4217 | 107 /** clipping information */ |
| 108 SDL_Rect clip_rect; /**< Read-only */ | |
| 109 Uint32 unused1; /**< for binary compatibility */ | |
| 0 | 110 |
| 4217 | 111 /** Allow recursive locks */ |
| 112 Uint32 locked; /**< Private */ | |
| 0 | 113 |
| 4217 | 114 /** info for fast blit mapping to other surfaces */ |
| 115 struct SDL_BlitMap *map; /**< Private */ | |
| 0 | 116 |
| 4217 | 117 /** format version, bumped at every change to invalidate blit maps */ |
| 118 unsigned int format_version; /**< Private */ | |
| 0 | 119 |
| 4217 | 120 /** Reference count -- used when freeing surface */ |
| 121 int refcount; /**< Read-mostly */ | |
| 0 | 122 } SDL_Surface; |
| 123 | |
| 4217 | 124 /** @name SDL_Surface Flags |
| 125 * These are the currently supported flags for the SDL_surface | |
| 126 */ | |
| 127 /*@{*/ | |
| 128 | |
| 129 /** Available for SDL_CreateRGBSurface() or SDL_SetVideoMode() */ | |
| 130 /*@{*/ | |
| 131 #define SDL_SWSURFACE 0x00000000 /**< Surface is in system memory */ | |
| 132 #define SDL_HWSURFACE 0x00000001 /**< Surface is in video memory */ | |
| 133 #define SDL_ASYNCBLIT 0x00000004 /**< Use asynchronous blits if possible */ | |
| 134 /*@}*/ | |
| 0 | 135 |
| 4217 | 136 /** Available for SDL_SetVideoMode() */ |
| 137 /*@{*/ | |
| 138 #define SDL_ANYFORMAT 0x10000000 /**< Allow any video depth/pixel-format */ | |
| 139 #define SDL_HWPALETTE 0x20000000 /**< Surface has exclusive palette */ | |
| 140 #define SDL_DOUBLEBUF 0x40000000 /**< Set up double-buffered video mode */ | |
| 141 #define SDL_FULLSCREEN 0x80000000 /**< Surface is a full screen display */ | |
| 142 #define SDL_OPENGL 0x00000002 /**< Create an OpenGL rendering context */ | |
| 143 #define SDL_OPENGLBLIT 0x0000000A /**< Create an OpenGL rendering context and use it for blitting */ | |
| 144 #define SDL_RESIZABLE 0x00000010 /**< This video mode may be resized */ | |
| 145 #define SDL_NOFRAME 0x00000020 /**< No window caption or edge frame */ | |
| 146 /*@}*/ | |
| 147 | |
| 148 /** Used internally (read-only) */ | |
| 149 /*@{*/ | |
| 150 #define SDL_HWACCEL 0x00000100 /**< Blit uses hardware acceleration */ | |
| 151 #define SDL_SRCCOLORKEY 0x00001000 /**< Blit uses a source color key */ | |
| 152 #define SDL_RLEACCELOK 0x00002000 /**< Private flag */ | |
| 153 #define SDL_RLEACCEL 0x00004000 /**< Surface is RLE encoded */ | |
| 154 #define SDL_SRCALPHA 0x00010000 /**< Blit uses source alpha blending */ | |
| 155 #define SDL_PREALLOC 0x01000000 /**< Surface uses preallocated memory */ | |
| 156 /*@}*/ | |
| 157 | |
| 158 /*@}*/ | |
| 159 | |
| 160 /** Evaluates to true if the surface needs to be locked before access */ | |
| 0 | 161 #define SDL_MUSTLOCK(surface) \ |
| 162 (surface->offset || \ | |
| 163 ((surface->flags & (SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_RLEACCEL)) != 0)) | |
| 164 | |
| 4217 | 165 /** typedef for private surface blitting functions */ |
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166 typedef int (*SDL_blit)(struct SDL_Surface *src, SDL_Rect *srcrect, |
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167 struct SDL_Surface *dst, SDL_Rect *dstrect); |
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168 |
| 0 | 169 |
| 4217 | 170 /** Useful for determining the video hardware capabilities */ |
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171 typedef struct SDL_VideoInfo { |
| 4217 | 172 Uint32 hw_available :1; /**< Flag: Can you create hardware surfaces? */ |
| 173 Uint32 wm_available :1; /**< Flag: Can you talk to a window manager? */ | |
| 0 | 174 Uint32 UnusedBits1 :6; |
| 175 Uint32 UnusedBits2 :1; | |
| 4217 | 176 Uint32 blit_hw :1; /**< Flag: Accelerated blits HW --> HW */ |
| 177 Uint32 blit_hw_CC :1; /**< Flag: Accelerated blits with Colorkey */ | |
| 178 Uint32 blit_hw_A :1; /**< Flag: Accelerated blits with Alpha */ | |
| 179 Uint32 blit_sw :1; /**< Flag: Accelerated blits SW --> HW */ | |
| 180 Uint32 blit_sw_CC :1; /**< Flag: Accelerated blits with Colorkey */ | |
| 181 Uint32 blit_sw_A :1; /**< Flag: Accelerated blits with Alpha */ | |
| 182 Uint32 blit_fill :1; /**< Flag: Accelerated color fill */ | |
| 0 | 183 Uint32 UnusedBits3 :16; |
| 4217 | 184 Uint32 video_mem; /**< The total amount of video memory (in K) */ |
| 185 SDL_PixelFormat *vfmt; /**< Value: The format of the video surface */ | |
| 186 int current_w; /**< Value: The current video mode width */ | |
| 187 int current_h; /**< Value: The current video mode height */ | |
| 0 | 188 } SDL_VideoInfo; |
| 189 | |
| 190 | |
| 4217 | 191 /** @name Overlay Formats |
| 192 * The most common video overlay formats. | |
| 193 * For an explanation of these pixel formats, see: | |
| 194 * http://www.webartz.com/fourcc/indexyuv.htm | |
| 195 * | |
| 196 * For information on the relationship between color spaces, see: | |
| 197 * http://www.neuro.sfc.keio.ac.jp/~aly/polygon/info/color-space-faq.html | |
| 0 | 198 */ |
| 4217 | 199 /*@{*/ |
| 200 #define SDL_YV12_OVERLAY 0x32315659 /**< Planar mode: Y + V + U (3 planes) */ | |
| 201 #define SDL_IYUV_OVERLAY 0x56555949 /**< Planar mode: Y + U + V (3 planes) */ | |
| 202 #define SDL_YUY2_OVERLAY 0x32595559 /**< Packed mode: Y0+U0+Y1+V0 (1 plane) */ | |
| 203 #define SDL_UYVY_OVERLAY 0x59565955 /**< Packed mode: U0+Y0+V0+Y1 (1 plane) */ | |
| 204 #define SDL_YVYU_OVERLAY 0x55595659 /**< Packed mode: Y0+V0+Y1+U0 (1 plane) */ | |
| 205 /*@}*/ | |
| 0 | 206 |
| 4217 | 207 /** The YUV hardware video overlay */ |
| 0 | 208 typedef struct SDL_Overlay { |
| 4217 | 209 Uint32 format; /**< Read-only */ |
| 210 int w, h; /**< Read-only */ | |
| 211 int planes; /**< Read-only */ | |
| 212 Uint16 *pitches; /**< Read-only */ | |
| 213 Uint8 **pixels; /**< Read-write */ | |
| 0 | 214 |
| 4217 | 215 /** @name Hardware-specific surface info */ |
| 216 /*@{*/ | |
| 0 | 217 struct private_yuvhwfuncs *hwfuncs; |
| 218 struct private_yuvhwdata *hwdata; | |
| 4217 | 219 /*@{*/ |
| 0 | 220 |
| 4217 | 221 /** @name Special flags */ |
| 222 /*@{*/ | |
| 223 Uint32 hw_overlay :1; /**< Flag: This overlay hardware accelerated? */ | |
| 0 | 224 Uint32 UnusedBits :31; |
| 4217 | 225 /*@}*/ |
| 0 | 226 } SDL_Overlay; |
| 227 | |
| 228 | |
| 4217 | 229 /** Public enumeration for setting the OpenGL window attributes. */ |
| 0 | 230 typedef enum { |
| 231 SDL_GL_RED_SIZE, | |
| 232 SDL_GL_GREEN_SIZE, | |
| 233 SDL_GL_BLUE_SIZE, | |
| 234 SDL_GL_ALPHA_SIZE, | |
| 235 SDL_GL_BUFFER_SIZE, | |
| 236 SDL_GL_DOUBLEBUFFER, | |
| 237 SDL_GL_DEPTH_SIZE, | |
| 238 SDL_GL_STENCIL_SIZE, | |
| 239 SDL_GL_ACCUM_RED_SIZE, | |
| 240 SDL_GL_ACCUM_GREEN_SIZE, | |
| 241 SDL_GL_ACCUM_BLUE_SIZE, | |
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242 SDL_GL_ACCUM_ALPHA_SIZE, |
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243 SDL_GL_STEREO, |
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244 SDL_GL_MULTISAMPLEBUFFERS, |
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245 SDL_GL_MULTISAMPLESAMPLES, |
| 1737 | 246 SDL_GL_ACCELERATED_VISUAL, |
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247 SDL_GL_SWAP_CONTROL |
| 0 | 248 } SDL_GLattr; |
| 249 | |
| 4217 | 250 /** @name flags for SDL_SetPalette() */ |
| 251 /*@{*/ | |
| 0 | 252 #define SDL_LOGPAL 0x01 |
| 253 #define SDL_PHYSPAL 0x02 | |
| 4217 | 254 /*@}*/ |
| 0 | 255 |
| 256 /* Function prototypes */ | |
| 257 | |
| 4217 | 258 /** |
| 259 * @name Video Init and Quit | |
| 260 * These functions are used internally, and should not be used unless you | |
| 0 | 261 * have a specific need to specify the video driver you want to use. |
| 262 * You should normally use SDL_Init() or SDL_InitSubSystem(). | |
| 4217 | 263 */ |
| 264 /*@{*/ | |
| 265 /** | |
| 266 * Initializes the video subsystem. Sets up a connection | |
| 0 | 267 * to the window manager, etc, and determines the current video mode and |
| 268 * pixel format, but does not initialize a window or graphics mode. | |
| 269 * Note that event handling is activated by this routine. | |
| 270 * | |
| 271 * If you use both sound and video in your application, you need to call | |
| 272 * SDL_Init() before opening the sound device, otherwise under Win32 DirectX, | |
| 273 * you won't be able to set full-screen display modes. | |
| 274 */ | |
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275 extern DECLSPEC int SDLCALL SDL_VideoInit(const char *driver_name, Uint32 flags); |
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276 extern DECLSPEC void SDLCALL SDL_VideoQuit(void); |
| 4217 | 277 /*@}*/ |
| 0 | 278 |
| 4217 | 279 /** |
| 280 * This function fills the given character buffer with the name of the | |
| 0 | 281 * video driver, and returns a pointer to it if the video driver has |
| 282 * been initialized. It returns NULL if no driver has been initialized. | |
| 283 */ | |
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284 extern DECLSPEC char * SDLCALL SDL_VideoDriverName(char *namebuf, int maxlen); |
| 0 | 285 |
| 4217 | 286 /** |
| 0 | 287 * This function returns a pointer to the current display surface. |
| 288 * If SDL is doing format conversion on the display surface, this | |
| 289 * function returns the publicly visible surface, not the real video | |
| 290 * surface. | |
| 291 */ | |
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292 extern DECLSPEC SDL_Surface * SDLCALL SDL_GetVideoSurface(void); |
| 0 | 293 |
| 4217 | 294 /** |
| 0 | 295 * This function returns a read-only pointer to information about the |
| 296 * video hardware. If this is called before SDL_SetVideoMode(), the 'vfmt' | |
| 297 * member of the returned structure will contain the pixel format of the | |
| 298 * "best" video mode. | |
| 299 */ | |
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300 extern DECLSPEC const SDL_VideoInfo * SDLCALL SDL_GetVideoInfo(void); |
| 0 | 301 |
| 4217 | 302 /** |
| 0 | 303 * Check to see if a particular video mode is supported. |
| 304 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 305 * or returns the bits-per-pixel of the closest available mode with the | |
| 306 * given width and height. If this bits-per-pixel is different from the | |
| 307 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 308 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 309 * | |
| 310 * The arguments to SDL_VideoModeOK() are the same ones you would pass to | |
| 311 * SDL_SetVideoMode() | |
| 312 */ | |
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313 extern DECLSPEC int SDLCALL SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags); |
| 0 | 314 |
| 4217 | 315 /** |
| 0 | 316 * Return a pointer to an array of available screen dimensions for the |
| 317 * given format and video flags, sorted largest to smallest. Returns | |
| 318 * NULL if there are no dimensions available for a particular format, | |
| 319 * or (SDL_Rect **)-1 if any dimension is okay for the given format. | |
| 320 * | |
| 321 * If 'format' is NULL, the mode list will be for the format given | |
| 322 * by SDL_GetVideoInfo()->vfmt | |
| 323 */ | |
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324 extern DECLSPEC SDL_Rect ** SDLCALL SDL_ListModes(SDL_PixelFormat *format, Uint32 flags); |
| 0 | 325 |
| 4217 | 326 /** |
| 0 | 327 * Set up a video mode with the specified width, height and bits-per-pixel. |
| 328 * | |
| 329 * If 'bpp' is 0, it is treated as the current display bits per pixel. | |
| 330 * | |
| 331 * If SDL_ANYFORMAT is set in 'flags', the SDL library will try to set the | |
| 332 * requested bits-per-pixel, but will return whatever video pixel format is | |
| 333 * available. The default is to emulate the requested pixel format if it | |
| 334 * is not natively available. | |
| 335 * | |
| 336 * If SDL_HWSURFACE is set in 'flags', the video surface will be placed in | |
| 337 * video memory, if possible, and you may have to call SDL_LockSurface() | |
| 338 * in order to access the raw framebuffer. Otherwise, the video surface | |
| 339 * will be created in system memory. | |
| 340 * | |
| 341 * If SDL_ASYNCBLIT is set in 'flags', SDL will try to perform rectangle | |
| 342 * updates asynchronously, but you must always lock before accessing pixels. | |
| 343 * SDL will wait for updates to complete before returning from the lock. | |
| 344 * | |
| 345 * If SDL_HWPALETTE is set in 'flags', the SDL library will guarantee | |
| 346 * that the colors set by SDL_SetColors() will be the colors you get. | |
| 347 * Otherwise, in 8-bit mode, SDL_SetColors() may not be able to set all | |
| 348 * of the colors exactly the way they are requested, and you should look | |
| 349 * at the video surface structure to determine the actual palette. | |
| 350 * If SDL cannot guarantee that the colors you request can be set, | |
| 351 * i.e. if the colormap is shared, then the video surface may be created | |
| 352 * under emulation in system memory, overriding the SDL_HWSURFACE flag. | |
| 353 * | |
| 354 * If SDL_FULLSCREEN is set in 'flags', the SDL library will try to set | |
| 355 * a fullscreen video mode. The default is to create a windowed mode | |
| 356 * if the current graphics system has a window manager. | |
| 357 * If the SDL library is able to set a fullscreen video mode, this flag | |
| 358 * will be set in the surface that is returned. | |
| 359 * | |
| 360 * If SDL_DOUBLEBUF is set in 'flags', the SDL library will try to set up | |
| 361 * two surfaces in video memory and swap between them when you call | |
| 362 * SDL_Flip(). This is usually slower than the normal single-buffering | |
| 363 * scheme, but prevents "tearing" artifacts caused by modifying video | |
| 364 * memory while the monitor is refreshing. It should only be used by | |
| 365 * applications that redraw the entire screen on every update. | |
| 366 * | |
| 367 * If SDL_RESIZABLE is set in 'flags', the SDL library will allow the | |
| 368 * window manager, if any, to resize the window at runtime. When this | |
| 369 * occurs, SDL will send a SDL_VIDEORESIZE event to you application, | |
| 370 * and you must respond to the event by re-calling SDL_SetVideoMode() | |
| 371 * with the requested size (or another size that suits the application). | |
| 372 * | |
| 373 * If SDL_NOFRAME is set in 'flags', the SDL library will create a window | |
| 374 * without any title bar or frame decoration. Fullscreen video modes have | |
| 375 * this flag set automatically. | |
| 376 * | |
| 377 * This function returns the video framebuffer surface, or NULL if it fails. | |
| 378 * | |
| 379 * If you rely on functionality provided by certain video flags, check the | |
| 380 * flags of the returned surface to make sure that functionality is available. | |
| 381 * SDL will fall back to reduced functionality if the exact flags you wanted | |
| 382 * are not available. | |
| 383 */ | |
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384 extern DECLSPEC SDL_Surface * SDLCALL SDL_SetVideoMode |
| 0 | 385 (int width, int height, int bpp, Uint32 flags); |
| 386 | |
| 4217 | 387 /** @name SDL_Update Functions |
| 388 * These functions should not be called while 'screen' is locked. | |
| 389 */ | |
| 390 /*@{*/ | |
| 391 /** | |
| 0 | 392 * Makes sure the given list of rectangles is updated on the given screen. |
| 393 */ | |
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394 extern DECLSPEC void SDLCALL SDL_UpdateRects |
| 0 | 395 (SDL_Surface *screen, int numrects, SDL_Rect *rects); |
| 4217 | 396 /** |
| 397 * If 'x', 'y', 'w' and 'h' are all 0, SDL_UpdateRect will update the entire | |
| 398 * screen. | |
| 399 */ | |
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400 extern DECLSPEC void SDLCALL SDL_UpdateRect |
| 0 | 401 (SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h); |
| 4217 | 402 /*@}*/ |
| 0 | 403 |
| 4217 | 404 /** |
| 0 | 405 * On hardware that supports double-buffering, this function sets up a flip |
| 406 * and returns. The hardware will wait for vertical retrace, and then swap | |
| 407 * video buffers before the next video surface blit or lock will return. | |
| 408 * On hardware that doesn not support double-buffering, this is equivalent | |
| 409 * to calling SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 410 * The SDL_DOUBLEBUF flag must have been passed to SDL_SetVideoMode() when | |
| 411 * setting the video mode for this function to perform hardware flipping. | |
| 412 * This function returns 0 if successful, or -1 if there was an error. | |
| 413 */ | |
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414 extern DECLSPEC int SDLCALL SDL_Flip(SDL_Surface *screen); |
| 0 | 415 |
| 4217 | 416 /** |
| 0 | 417 * Set the gamma correction for each of the color channels. |
| 418 * The gamma values range (approximately) between 0.1 and 10.0 | |
| 419 * | |
| 420 * If this function isn't supported directly by the hardware, it will | |
| 421 * be emulated using gamma ramps, if available. If successful, this | |
| 422 * function returns 0, otherwise it returns -1. | |
| 423 */ | |
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424 extern DECLSPEC int SDLCALL SDL_SetGamma(float red, float green, float blue); |
| 0 | 425 |
| 4217 | 426 /** |
| 0 | 427 * Set the gamma translation table for the red, green, and blue channels |
| 428 * of the video hardware. Each table is an array of 256 16-bit quantities, | |
| 429 * representing a mapping between the input and output for that channel. | |
| 430 * The input is the index into the array, and the output is the 16-bit | |
| 431 * gamma value at that index, scaled to the output color precision. | |
| 432 * | |
| 433 * You may pass NULL for any of the channels to leave it unchanged. | |
| 434 * If the call succeeds, it will return 0. If the display driver or | |
| 435 * hardware does not support gamma translation, or otherwise fails, | |
| 436 * this function will return -1. | |
| 437 */ | |
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438 extern DECLSPEC int SDLCALL SDL_SetGammaRamp(const Uint16 *red, const Uint16 *green, const Uint16 *blue); |
| 0 | 439 |
| 4217 | 440 /** |
| 0 | 441 * Retrieve the current values of the gamma translation tables. |
| 442 * | |
| 443 * You must pass in valid pointers to arrays of 256 16-bit quantities. | |
| 444 * Any of the pointers may be NULL to ignore that channel. | |
| 445 * If the call succeeds, it will return 0. If the display driver or | |
| 446 * hardware does not support gamma translation, or otherwise fails, | |
| 447 * this function will return -1. | |
| 448 */ | |
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449 extern DECLSPEC int SDLCALL SDL_GetGammaRamp(Uint16 *red, Uint16 *green, Uint16 *blue); |
| 0 | 450 |
| 4217 | 451 /** |
| 0 | 452 * Sets a portion of the colormap for the given 8-bit surface. If 'surface' |
| 453 * is not a palettized surface, this function does nothing, returning 0. | |
| 454 * If all of the colors were set as passed to SDL_SetColors(), it will | |
| 455 * return 1. If not all the color entries were set exactly as given, | |
| 456 * it will return 0, and you should look at the surface palette to | |
| 457 * determine the actual color palette. | |
| 458 * | |
| 459 * When 'surface' is the surface associated with the current display, the | |
| 460 * display colormap will be updated with the requested colors. If | |
| 461 * SDL_HWPALETTE was set in SDL_SetVideoMode() flags, SDL_SetColors() | |
| 462 * will always return 1, and the palette is guaranteed to be set the way | |
| 463 * you desire, even if the window colormap has to be warped or run under | |
| 464 * emulation. | |
| 465 */ | |
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466 extern DECLSPEC int SDLCALL SDL_SetColors(SDL_Surface *surface, |
| 0 | 467 SDL_Color *colors, int firstcolor, int ncolors); |
| 468 | |
| 4217 | 469 /** |
| 0 | 470 * Sets a portion of the colormap for a given 8-bit surface. |
| 471 * 'flags' is one or both of: | |
| 472 * SDL_LOGPAL -- set logical palette, which controls how blits are mapped | |
| 473 * to/from the surface, | |
| 474 * SDL_PHYSPAL -- set physical palette, which controls how pixels look on | |
| 475 * the screen | |
| 476 * Only screens have physical palettes. Separate change of physical/logical | |
| 477 * palettes is only possible if the screen has SDL_HWPALETTE set. | |
| 478 * | |
| 479 * The return value is 1 if all colours could be set as requested, and 0 | |
| 480 * otherwise. | |
| 481 * | |
| 482 * SDL_SetColors() is equivalent to calling this function with | |
| 483 * flags = (SDL_LOGPAL|SDL_PHYSPAL). | |
| 484 */ | |
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485 extern DECLSPEC int SDLCALL SDL_SetPalette(SDL_Surface *surface, int flags, |
| 0 | 486 SDL_Color *colors, int firstcolor, |
| 487 int ncolors); | |
| 488 | |
| 4217 | 489 /** |
| 0 | 490 * Maps an RGB triple to an opaque pixel value for a given pixel format |
| 491 */ | |
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492 extern DECLSPEC Uint32 SDLCALL SDL_MapRGB |
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493 (const SDL_PixelFormat * const format, |
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494 const Uint8 r, const Uint8 g, const Uint8 b); |
| 0 | 495 |
| 4217 | 496 /** |
| 0 | 497 * Maps an RGBA quadruple to a pixel value for a given pixel format |
| 498 */ | |
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499 extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA |
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500 (const SDL_PixelFormat * const format, |
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501 const Uint8 r, const Uint8 g, const Uint8 b, const Uint8 a); |
| 0 | 502 |
| 4217 | 503 /** |
| 0 | 504 * Maps a pixel value into the RGB components for a given pixel format |
| 505 */ | |
| 4173 | 506 extern DECLSPEC void SDLCALL SDL_GetRGB(Uint32 pixel, |
| 507 const SDL_PixelFormat * const fmt, | |
| 0 | 508 Uint8 *r, Uint8 *g, Uint8 *b); |
| 509 | |
| 4217 | 510 /** |
| 0 | 511 * Maps a pixel value into the RGBA components for a given pixel format |
| 512 */ | |
| 4173 | 513 extern DECLSPEC void SDLCALL SDL_GetRGBA(Uint32 pixel, |
| 514 const SDL_PixelFormat * const fmt, | |
| 515 Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a); | |
| 0 | 516 |
| 4217 | 517 /** @sa SDL_CreateRGBSurface */ |
| 518 #define SDL_AllocSurface SDL_CreateRGBSurface | |
| 519 /** | |
| 0 | 520 * Allocate and free an RGB surface (must be called after SDL_SetVideoMode) |
| 521 * If the depth is 4 or 8 bits, an empty palette is allocated for the surface. | |
| 522 * If the depth is greater than 8 bits, the pixel format is set using the | |
| 523 * flags '[RGB]mask'. | |
| 524 * If the function runs out of memory, it will return NULL. | |
| 525 * | |
| 526 * The 'flags' tell what kind of surface to create. | |
| 527 * SDL_SWSURFACE means that the surface should be created in system memory. | |
| 528 * SDL_HWSURFACE means that the surface should be created in video memory, | |
| 529 * with the same format as the display surface. This is useful for surfaces | |
| 530 * that will not change much, to take advantage of hardware acceleration | |
| 531 * when being blitted to the display surface. | |
| 532 * SDL_ASYNCBLIT means that SDL will try to perform asynchronous blits with | |
| 533 * this surface, but you must always lock it before accessing the pixels. | |
| 534 * SDL will wait for current blits to finish before returning from the lock. | |
| 535 * SDL_SRCCOLORKEY indicates that the surface will be used for colorkey blits. | |
| 536 * If the hardware supports acceleration of colorkey blits between | |
| 537 * two surfaces in video memory, SDL will try to place the surface in | |
| 538 * video memory. If this isn't possible or if there is no hardware | |
| 539 * acceleration available, the surface will be placed in system memory. | |
| 540 * SDL_SRCALPHA means that the surface will be used for alpha blits and | |
| 541 * if the hardware supports hardware acceleration of alpha blits between | |
| 542 * two surfaces in video memory, to place the surface in video memory | |
| 543 * if possible, otherwise it will be placed in system memory. | |
| 544 * If the surface is created in video memory, blits will be _much_ faster, | |
| 545 * but the surface format must be identical to the video surface format, | |
| 546 * and the only way to access the pixels member of the surface is to use | |
| 547 * the SDL_LockSurface() and SDL_UnlockSurface() calls. | |
| 548 * If the requested surface actually resides in video memory, SDL_HWSURFACE | |
| 549 * will be set in the flags member of the returned surface. If for some | |
| 550 * reason the surface could not be placed in video memory, it will not have | |
| 551 * the SDL_HWSURFACE flag set, and will be created in system memory instead. | |
| 552 */ | |
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553 extern DECLSPEC SDL_Surface * SDLCALL SDL_CreateRGBSurface |
| 0 | 554 (Uint32 flags, int width, int height, int depth, |
| 555 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); | |
| 4217 | 556 /** @sa SDL_CreateRGBSurface */ |
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557 extern DECLSPEC SDL_Surface * SDLCALL SDL_CreateRGBSurfaceFrom(void *pixels, |
| 0 | 558 int width, int height, int depth, int pitch, |
| 559 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); | |
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560 extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface *surface); |
| 0 | 561 |
| 4217 | 562 /** |
| 0 | 563 * SDL_LockSurface() sets up a surface for directly accessing the pixels. |
| 564 * Between calls to SDL_LockSurface()/SDL_UnlockSurface(), you can write | |
| 565 * to and read from 'surface->pixels', using the pixel format stored in | |
| 566 * 'surface->format'. Once you are done accessing the surface, you should | |
| 567 * use SDL_UnlockSurface() to release it. | |
| 568 * | |
| 569 * Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates | |
| 570 * to 0, then you can read and write to the surface at any time, and the | |
| 571 * pixel format of the surface will not change. In particular, if the | |
| 572 * SDL_HWSURFACE flag is not given when calling SDL_SetVideoMode(), you | |
| 573 * will not need to lock the display surface before accessing it. | |
| 574 * | |
| 575 * No operating system or library calls should be made between lock/unlock | |
| 576 * pairs, as critical system locks may be held during this time. | |
| 577 * | |
| 578 * SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked. | |
| 579 */ | |
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580 extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface *surface); |
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581 extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface *surface); |
| 0 | 582 |
| 4217 | 583 /** |
| 0 | 584 * Load a surface from a seekable SDL data source (memory or file.) |
| 585 * If 'freesrc' is non-zero, the source will be closed after being read. | |
| 586 * Returns the new surface, or NULL if there was an error. | |
| 587 * The new surface should be freed with SDL_FreeSurface(). | |
| 588 */ | |
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589 extern DECLSPEC SDL_Surface * SDLCALL SDL_LoadBMP_RW(SDL_RWops *src, int freesrc); |
| 0 | 590 |
| 4217 | 591 /** Convenience macro -- load a surface from a file */ |
| 0 | 592 #define SDL_LoadBMP(file) SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1) |
| 593 | |
| 4217 | 594 /** |
| 0 | 595 * Save a surface to a seekable SDL data source (memory or file.) |
| 596 * If 'freedst' is non-zero, the source will be closed after being written. | |
| 597 * Returns 0 if successful or -1 if there was an error. | |
| 598 */ | |
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599 extern DECLSPEC int SDLCALL SDL_SaveBMP_RW |
| 0 | 600 (SDL_Surface *surface, SDL_RWops *dst, int freedst); |
| 601 | |
| 4217 | 602 /** Convenience macro -- save a surface to a file */ |
| 0 | 603 #define SDL_SaveBMP(surface, file) \ |
| 604 SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1) | |
| 605 | |
| 4217 | 606 /** |
| 0 | 607 * Sets the color key (transparent pixel) in a blittable surface. |
| 608 * If 'flag' is SDL_SRCCOLORKEY (optionally OR'd with SDL_RLEACCEL), | |
| 609 * 'key' will be the transparent pixel in the source image of a blit. | |
| 610 * SDL_RLEACCEL requests RLE acceleration for the surface if present, | |
| 611 * and removes RLE acceleration if absent. | |
| 612 * If 'flag' is 0, this function clears any current color key. | |
| 613 * This function returns 0, or -1 if there was an error. | |
| 614 */ | |
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615 extern DECLSPEC int SDLCALL SDL_SetColorKey |
| 0 | 616 (SDL_Surface *surface, Uint32 flag, Uint32 key); |
| 617 | |
| 4217 | 618 /** |
| 0 | 619 * This function sets the alpha value for the entire surface, as opposed to |
| 620 * using the alpha component of each pixel. This value measures the range | |
| 621 * of transparency of the surface, 0 being completely transparent to 255 | |
| 622 * being completely opaque. An 'alpha' value of 255 causes blits to be | |
| 623 * opaque, the source pixels copied to the destination (the default). Note | |
| 624 * that per-surface alpha can be combined with colorkey transparency. | |
| 625 * | |
| 626 * If 'flag' is 0, alpha blending is disabled for the surface. | |
| 627 * If 'flag' is SDL_SRCALPHA, alpha blending is enabled for the surface. | |
| 628 * OR:ing the flag with SDL_RLEACCEL requests RLE acceleration for the | |
| 629 * surface; if SDL_RLEACCEL is not specified, the RLE accel will be removed. | |
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630 * |
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631 * The 'alpha' parameter is ignored for surfaces that have an alpha channel. |
| 0 | 632 */ |
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633 extern DECLSPEC int SDLCALL SDL_SetAlpha(SDL_Surface *surface, Uint32 flag, Uint8 alpha); |
| 0 | 634 |
| 4217 | 635 /** |
| 0 | 636 * Sets the clipping rectangle for the destination surface in a blit. |
| 637 * | |
| 638 * If the clip rectangle is NULL, clipping will be disabled. | |
| 639 * If the clip rectangle doesn't intersect the surface, the function will | |
| 640 * return SDL_FALSE and blits will be completely clipped. Otherwise the | |
| 641 * function returns SDL_TRUE and blits to the surface will be clipped to | |
| 642 * the intersection of the surface area and the clipping rectangle. | |
| 643 * | |
| 644 * Note that blits are automatically clipped to the edges of the source | |
| 645 * and destination surfaces. | |
| 646 */ | |
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647 extern DECLSPEC SDL_bool SDLCALL SDL_SetClipRect(SDL_Surface *surface, const SDL_Rect *rect); |
| 0 | 648 |
| 4217 | 649 /** |
| 0 | 650 * Gets the clipping rectangle for the destination surface in a blit. |
| 651 * 'rect' must be a pointer to a valid rectangle which will be filled | |
| 652 * with the correct values. | |
| 653 */ | |
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654 extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect); |
| 0 | 655 |
| 4217 | 656 /** |
| 0 | 657 * Creates a new surface of the specified format, and then copies and maps |
| 658 * the given surface to it so the blit of the converted surface will be as | |
| 659 * fast as possible. If this function fails, it returns NULL. | |
| 660 * | |
| 661 * The 'flags' parameter is passed to SDL_CreateRGBSurface() and has those | |
| 662 * semantics. You can also pass SDL_RLEACCEL in the flags parameter and | |
| 663 * SDL will try to RLE accelerate colorkey and alpha blits in the resulting | |
| 664 * surface. | |
| 665 * | |
| 666 * This function is used internally by SDL_DisplayFormat(). | |
| 667 */ | |
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668 extern DECLSPEC SDL_Surface * SDLCALL SDL_ConvertSurface |
| 0 | 669 (SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags); |
| 670 | |
| 4217 | 671 /** |
| 0 | 672 * This performs a fast blit from the source surface to the destination |
| 673 * surface. It assumes that the source and destination rectangles are | |
| 674 * the same size. If either 'srcrect' or 'dstrect' are NULL, the entire | |
| 675 * surface (src or dst) is copied. The final blit rectangles are saved | |
| 676 * in 'srcrect' and 'dstrect' after all clipping is performed. | |
| 677 * If the blit is successful, it returns 0, otherwise it returns -1. | |
| 678 * | |
| 679 * The blit function should not be called on a locked surface. | |
| 680 * | |
| 681 * The blit semantics for surfaces with and without alpha and colorkey | |
| 682 * are defined as follows: | |
| 683 * | |
| 684 * RGBA->RGB: | |
| 685 * SDL_SRCALPHA set: | |
| 686 * alpha-blend (using alpha-channel). | |
| 687 * SDL_SRCCOLORKEY ignored. | |
| 688 * SDL_SRCALPHA not set: | |
| 689 * copy RGB. | |
| 690 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 691 * RGB values of the source colour key, ignoring alpha in the | |
| 692 * comparison. | |
| 693 * | |
| 694 * RGB->RGBA: | |
| 695 * SDL_SRCALPHA set: | |
| 696 * alpha-blend (using the source per-surface alpha value); | |
| 697 * set destination alpha to opaque. | |
| 698 * SDL_SRCALPHA not set: | |
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699 * copy RGB, set destination alpha to source per-surface alpha value. |
| 0 | 700 * both: |
| 701 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 702 * source colour key. | |
| 703 * | |
| 704 * RGBA->RGBA: | |
| 705 * SDL_SRCALPHA set: | |
| 706 * alpha-blend (using the source alpha channel) the RGB values; | |
| 707 * leave destination alpha untouched. [Note: is this correct?] | |
| 708 * SDL_SRCCOLORKEY ignored. | |
| 709 * SDL_SRCALPHA not set: | |
| 710 * copy all of RGBA to the destination. | |
| 711 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 712 * RGB values of the source colour key, ignoring alpha in the | |
| 713 * comparison. | |
| 714 * | |
| 715 * RGB->RGB: | |
| 716 * SDL_SRCALPHA set: | |
| 717 * alpha-blend (using the source per-surface alpha value). | |
| 718 * SDL_SRCALPHA not set: | |
| 719 * copy RGB. | |
| 720 * both: | |
| 721 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 722 * source colour key. | |
| 723 * | |
| 724 * If either of the surfaces were in video memory, and the blit returns -2, | |
| 725 * the video memory was lost, so it should be reloaded with artwork and | |
| 726 * re-blitted: | |
| 4217 | 727 * @code |
| 728 * while ( SDL_BlitSurface(image, imgrect, screen, dstrect) == -2 ) { | |
| 729 * while ( SDL_LockSurface(image) < 0 ) | |
| 730 * Sleep(10); | |
| 731 * -- Write image pixels to image->pixels -- | |
| 732 * SDL_UnlockSurface(image); | |
| 733 * } | |
| 734 * @endcode | |
| 735 * | |
| 0 | 736 * This happens under DirectX 5.0 when the system switches away from your |
| 737 * fullscreen application. The lock will also fail until you have access | |
| 738 * to the video memory again. | |
| 4217 | 739 * |
| 740 * You should call SDL_BlitSurface() unless you know exactly how SDL | |
| 741 * blitting works internally and how to use the other blit functions. | |
| 0 | 742 */ |
| 743 #define SDL_BlitSurface SDL_UpperBlit | |
| 744 | |
| 4217 | 745 /** This is the public blit function, SDL_BlitSurface(), and it performs |
| 746 * rectangle validation and clipping before passing it to SDL_LowerBlit() | |
| 747 */ | |
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748 extern DECLSPEC int SDLCALL SDL_UpperBlit |
| 0 | 749 (SDL_Surface *src, SDL_Rect *srcrect, |
| 750 SDL_Surface *dst, SDL_Rect *dstrect); | |
| 4217 | 751 /** This is a semi-private blit function and it performs low-level surface |
| 752 * blitting only. | |
| 753 */ | |
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754 extern DECLSPEC int SDLCALL SDL_LowerBlit |
| 0 | 755 (SDL_Surface *src, SDL_Rect *srcrect, |
| 756 SDL_Surface *dst, SDL_Rect *dstrect); | |
| 757 | |
| 4217 | 758 /** |
| 0 | 759 * This function performs a fast fill of the given rectangle with 'color' |
| 760 * The given rectangle is clipped to the destination surface clip area | |
| 761 * and the final fill rectangle is saved in the passed in pointer. | |
| 762 * If 'dstrect' is NULL, the whole surface will be filled with 'color' | |
| 763 * The color should be a pixel of the format used by the surface, and | |
| 764 * can be generated by the SDL_MapRGB() function. | |
| 765 * This function returns 0 on success, or -1 on error. | |
| 766 */ | |
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767 extern DECLSPEC int SDLCALL SDL_FillRect |
| 0 | 768 (SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color); |
| 769 | |
| 4217 | 770 /** |
| 0 | 771 * This function takes a surface and copies it to a new surface of the |
| 772 * pixel format and colors of the video framebuffer, suitable for fast | |
| 773 * blitting onto the display surface. It calls SDL_ConvertSurface() | |
| 774 * | |
| 775 * If you want to take advantage of hardware colorkey or alpha blit | |
| 776 * acceleration, you should set the colorkey and alpha value before | |
| 777 * calling this function. | |
| 778 * | |
| 779 * If the conversion fails or runs out of memory, it returns NULL | |
| 780 */ | |
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781 extern DECLSPEC SDL_Surface * SDLCALL SDL_DisplayFormat(SDL_Surface *surface); |
| 0 | 782 |
| 4217 | 783 /** |
| 0 | 784 * This function takes a surface and copies it to a new surface of the |
| 785 * pixel format and colors of the video framebuffer (if possible), | |
| 786 * suitable for fast alpha blitting onto the display surface. | |
| 787 * The new surface will always have an alpha channel. | |
| 788 * | |
| 789 * If you want to take advantage of hardware colorkey or alpha blit | |
| 790 * acceleration, you should set the colorkey and alpha value before | |
| 791 * calling this function. | |
| 792 * | |
| 793 * If the conversion fails or runs out of memory, it returns NULL | |
| 794 */ | |
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795 extern DECLSPEC SDL_Surface * SDLCALL SDL_DisplayFormatAlpha(SDL_Surface *surface); |
| 0 | 796 |
| 797 | |
| 798 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 4217 | 799 /** @name YUV video surface overlay functions */ /*@{*/ |
| 0 | 800 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 801 | |
| 4217 | 802 /** This function creates a video output overlay |
| 803 * Calling the returned surface an overlay is something of a misnomer because | |
| 804 * the contents of the display surface underneath the area where the overlay | |
| 805 * is shown is undefined - it may be overwritten with the converted YUV data. | |
| 806 */ | |
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807 extern DECLSPEC SDL_Overlay * SDLCALL SDL_CreateYUVOverlay(int width, int height, |
| 0 | 808 Uint32 format, SDL_Surface *display); |
| 809 | |
| 4217 | 810 /** Lock an overlay for direct access, and unlock it when you are done */ |
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811 extern DECLSPEC int SDLCALL SDL_LockYUVOverlay(SDL_Overlay *overlay); |
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812 extern DECLSPEC void SDLCALL SDL_UnlockYUVOverlay(SDL_Overlay *overlay); |
| 0 | 813 |
| 4217 | 814 /** Blit a video overlay to the display surface. |
| 815 * The contents of the video surface underneath the blit destination are | |
| 816 * not defined. | |
| 817 * The width and height of the destination rectangle may be different from | |
| 818 * that of the overlay, but currently only 2x scaling is supported. | |
| 819 */ | |
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820 extern DECLSPEC int SDLCALL SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect); |
| 0 | 821 |
| 4217 | 822 /** Free a video overlay */ |
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823 extern DECLSPEC void SDLCALL SDL_FreeYUVOverlay(SDL_Overlay *overlay); |
| 0 | 824 |
| 4217 | 825 /*@}*/ |
| 0 | 826 |
| 827 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 4217 | 828 /** @name OpenGL support functions. */ /*@{*/ |
| 0 | 829 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 830 | |
| 4217 | 831 /** |
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832 * Dynamically load an OpenGL library, or the default one if path is NULL |
| 0 | 833 * |
| 834 * If you do this, you need to retrieve all of the GL functions used in | |
| 835 * your program from the dynamic library using SDL_GL_GetProcAddress(). | |
| 836 */ | |
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837 extern DECLSPEC int SDLCALL SDL_GL_LoadLibrary(const char *path); |
| 0 | 838 |
| 4217 | 839 /** |
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840 * Get the address of a GL function |
| 0 | 841 */ |
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842 extern DECLSPEC void * SDLCALL SDL_GL_GetProcAddress(const char* proc); |
| 0 | 843 |
| 4217 | 844 /** |
| 0 | 845 * Set an attribute of the OpenGL subsystem before intialization. |
| 846 */ | |
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847 extern DECLSPEC int SDLCALL SDL_GL_SetAttribute(SDL_GLattr attr, int value); |
| 0 | 848 |
| 4217 | 849 /** |
| 0 | 850 * Get an attribute of the OpenGL subsystem from the windowing |
| 851 * interface, such as glX. This is of course different from getting | |
| 852 * the values from SDL's internal OpenGL subsystem, which only | |
| 853 * stores the values you request before initialization. | |
| 854 * | |
| 855 * Developers should track the values they pass into SDL_GL_SetAttribute | |
| 856 * themselves if they want to retrieve these values. | |
| 857 */ | |
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858 extern DECLSPEC int SDLCALL SDL_GL_GetAttribute(SDL_GLattr attr, int* value); |
| 0 | 859 |
| 4217 | 860 /** |
| 0 | 861 * Swap the OpenGL buffers, if double-buffering is supported. |
| 862 */ | |
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863 extern DECLSPEC void SDLCALL SDL_GL_SwapBuffers(void); |
| 0 | 864 |
| 4217 | 865 /** @name OpenGL Internal Functions |
| 0 | 866 * Internal functions that should not be called unless you have read |
| 867 * and understood the source code for these functions. | |
| 868 */ | |
| 4217 | 869 /*@{*/ |
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870 extern DECLSPEC void SDLCALL SDL_GL_UpdateRects(int numrects, SDL_Rect* rects); |
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871 extern DECLSPEC void SDLCALL SDL_GL_Lock(void); |
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872 extern DECLSPEC void SDLCALL SDL_GL_Unlock(void); |
| 4217 | 873 /*@}*/ |
| 874 | |
| 875 /*@}*/ | |
| 0 | 876 |
| 877 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 4217 | 878 /** @name Window Manager Functions */ |
| 879 /** These functions allow interaction with the window manager, if any. */ /*@{*/ | |
| 0 | 880 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 881 | |
| 4217 | 882 /** |
| 883 * Sets the title and icon text of the display window (UTF-8 encoded) | |
| 0 | 884 */ |
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885 extern DECLSPEC void SDLCALL SDL_WM_SetCaption(const char *title, const char *icon); |
| 4217 | 886 /** |
| 887 * Gets the title and icon text of the display window (UTF-8 encoded) | |
| 888 */ | |
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889 extern DECLSPEC void SDLCALL SDL_WM_GetCaption(char **title, char **icon); |
| 0 | 890 |
| 4217 | 891 /** |
| 0 | 892 * Sets the icon for the display window. |
| 893 * This function must be called before the first call to SDL_SetVideoMode(). | |
| 894 * It takes an icon surface, and a mask in MSB format. | |
| 895 * If 'mask' is NULL, the entire icon surface will be used as the icon. | |
| 896 */ | |
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897 extern DECLSPEC void SDLCALL SDL_WM_SetIcon(SDL_Surface *icon, Uint8 *mask); |
| 0 | 898 |
| 4217 | 899 /** |
| 0 | 900 * This function iconifies the window, and returns 1 if it succeeded. |
| 901 * If the function succeeds, it generates an SDL_APPACTIVE loss event. | |
| 902 * This function is a noop and returns 0 in non-windowed environments. | |
| 903 */ | |
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904 extern DECLSPEC int SDLCALL SDL_WM_IconifyWindow(void); |
| 0 | 905 |
| 4217 | 906 /** |
| 0 | 907 * Toggle fullscreen mode without changing the contents of the screen. |
| 908 * If the display surface does not require locking before accessing | |
| 909 * the pixel information, then the memory pointers will not change. | |
| 910 * | |
| 911 * If this function was able to toggle fullscreen mode (change from | |
| 912 * running in a window to fullscreen, or vice-versa), it will return 1. | |
| 913 * If it is not implemented, or fails, it returns 0. | |
| 914 * | |
| 915 * The next call to SDL_SetVideoMode() will set the mode fullscreen | |
| 916 * attribute based on the flags parameter - if SDL_FULLSCREEN is not | |
| 917 * set, then the display will be windowed by default where supported. | |
| 918 * | |
| 919 * This is currently only implemented in the X11 video driver. | |
| 920 */ | |
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921 extern DECLSPEC int SDLCALL SDL_WM_ToggleFullScreen(SDL_Surface *surface); |
| 0 | 922 |
| 923 typedef enum { | |
| 924 SDL_GRAB_QUERY = -1, | |
| 925 SDL_GRAB_OFF = 0, | |
| 926 SDL_GRAB_ON = 1, | |
| 4217 | 927 SDL_GRAB_FULLSCREEN /**< Used internally */ |
| 0 | 928 } SDL_GrabMode; |
| 4217 | 929 /** |
| 930 * This function allows you to set and query the input grab state of | |
| 931 * the application. It returns the new input grab state. | |
| 932 * | |
| 0 | 933 * Grabbing means that the mouse is confined to the application window, |
| 934 * and nearly all keyboard input is passed directly to the application, | |
| 935 * and not interpreted by a window manager, if any. | |
| 936 */ | |
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937 extern DECLSPEC SDL_GrabMode SDLCALL SDL_WM_GrabInput(SDL_GrabMode mode); |
| 0 | 938 |
| 4217 | 939 /*@}*/ |
| 940 | |
| 941 /** @internal Not in public API at the moment - do not use! */ | |
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942 extern DECLSPEC int SDLCALL SDL_SoftStretch(SDL_Surface *src, SDL_Rect *srcrect, |
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943 SDL_Surface *dst, SDL_Rect *dstrect); |
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944 |
| 0 | 945 /* Ends C function definitions when using C++ */ |
| 946 #ifdef __cplusplus | |
| 947 } | |
| 948 #endif | |
| 949 #include "close_code.h" | |
| 950 | |
| 951 #endif /* _SDL_video_h */ |