Mercurial > sdl-ios-xcode
annotate src/video/SDL_sysvideo.h @ 1643:51038e80ae59
More general fix for bug #189
The clipping is done at a higher level, and the low level functions are
passed clipped rectangles. Drivers which don't support source clipping
have not been changed, so the image will be squished instead of clipped,
but at least they will no longer crash when the destination rect was out
of bounds.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 17 Apr 2006 06:47:23 +0000 |
| parents | 5151662ab728 |
| children | 96c2f89cc7e1 3b2a92126f4d |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 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 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #ifndef _SDL_sysvideo_h | |
| 25 #define _SDL_sysvideo_h | |
| 26 | |
| 27 #include "SDL_mouse.h" | |
| 28 #define SDL_PROTOTYPES_ONLY | |
| 29 #include "SDL_syswm.h" | |
| 30 #undef SDL_PROTOTYPES_ONLY | |
| 31 | |
| 32 /* This file prototypes the video driver implementation. | |
| 33 This is designed to be easily converted to C++ in the future. | |
| 34 */ | |
| 35 | |
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36 #if SDL_VIDEO_OPENGL |
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37 #include "SDL_opengl.h" |
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38 #endif /* SDL_VIDEO_OPENGL */ |
| 0 | 39 |
| 40 /* The SDL video driver */ | |
| 41 typedef struct SDL_VideoDevice SDL_VideoDevice; | |
| 42 | |
| 43 /* Define the SDL video driver structure */ | |
| 44 #define _THIS SDL_VideoDevice *_this | |
| 45 #ifndef _STATUS | |
| 46 #define _STATUS SDL_status *status | |
| 47 #endif | |
| 48 struct SDL_VideoDevice { | |
| 49 /* * * */ | |
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50 /* The name of this video driver */ |
| 0 | 51 const char *name; |
| 52 | |
| 53 /* * * */ | |
| 54 /* Initialization/Query functions */ | |
| 55 | |
| 56 /* Initialize the native video subsystem, filling 'vformat' with the | |
| 57 "best" display pixel format, returning 0 or -1 if there's an error. | |
| 58 */ | |
| 59 int (*VideoInit)(_THIS, SDL_PixelFormat *vformat); | |
| 60 | |
| 61 /* List the available video modes for the given pixel format, sorted | |
| 62 from largest to smallest. | |
| 63 */ | |
| 64 SDL_Rect **(*ListModes)(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 65 | |
| 66 /* Set the requested video mode, returning a surface which will be | |
| 67 set to the SDL_VideoSurface. The width and height will already | |
| 68 be verified by ListModes(), and the video subsystem is free to | |
| 69 set the mode to a supported bit depth different from the one | |
| 70 specified -- the desired bpp will be emulated with a shadow | |
| 71 surface if necessary. If a new mode is returned, this function | |
| 72 should take care of cleaning up the current mode. | |
| 73 */ | |
| 74 SDL_Surface *(*SetVideoMode)(_THIS, SDL_Surface *current, | |
| 75 int width, int height, int bpp, Uint32 flags); | |
| 76 | |
| 77 /* Toggle the fullscreen mode */ | |
| 78 int (*ToggleFullScreen)(_THIS, int on); | |
| 79 | |
| 80 /* This is called after the video mode has been set, to get the | |
| 81 initial mouse state. It should queue events as necessary to | |
| 82 properly represent the current mouse focus and position. | |
| 83 */ | |
| 84 void (*UpdateMouse)(_THIS); | |
| 85 | |
| 86 /* Create a YUV video surface (possibly overlay) of the given | |
| 87 format. The hardware should be able to perform at least 2x | |
| 88 scaling on display. | |
| 89 */ | |
| 90 SDL_Overlay *(*CreateYUVOverlay)(_THIS, int width, int height, | |
| 91 Uint32 format, SDL_Surface *display); | |
| 92 | |
| 93 /* Sets the color entries { firstcolor .. (firstcolor+ncolors-1) } | |
| 94 of the physical palette to those in 'colors'. If the device is | |
| 95 using a software palette (SDL_HWPALETTE not set), then the | |
| 96 changes are reflected in the logical palette of the screen | |
| 97 as well. | |
| 98 The return value is 1 if all entries could be set properly | |
| 99 or 0 otherwise. | |
| 100 */ | |
| 101 int (*SetColors)(_THIS, int firstcolor, int ncolors, | |
| 102 SDL_Color *colors); | |
| 103 | |
| 104 /* This pointer should exist in the native video subsystem and should | |
| 105 point to an appropriate update function for the current video mode | |
| 106 */ | |
| 107 void (*UpdateRects)(_THIS, int numrects, SDL_Rect *rects); | |
| 108 | |
| 109 /* Reverse the effects VideoInit() -- called if VideoInit() fails | |
| 110 or if the application is shutting down the video subsystem. | |
| 111 */ | |
| 112 void (*VideoQuit)(_THIS); | |
| 113 | |
| 114 /* * * */ | |
| 115 /* Hardware acceleration functions */ | |
| 116 | |
| 117 /* Information about the video hardware */ | |
| 118 SDL_VideoInfo info; | |
| 119 | |
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120 /* The pixel format used when SDL_CreateRGBSurface creates SDL_HWSURFACEs with alpha */ |
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121 SDL_PixelFormat* displayformatalphapixel; |
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122 |
| 0 | 123 /* Allocates a surface in video memory */ |
| 124 int (*AllocHWSurface)(_THIS, SDL_Surface *surface); | |
| 125 | |
| 126 /* Sets the hardware accelerated blit function, if any, based | |
| 127 on the current flags of the surface (colorkey, alpha, etc.) | |
| 128 */ | |
| 129 int (*CheckHWBlit)(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 130 | |
| 131 /* Fills a surface rectangle with the given color */ | |
| 132 int (*FillHWRect)(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 133 | |
| 134 /* Sets video mem colorkey and accelerated blit function */ | |
| 135 int (*SetHWColorKey)(_THIS, SDL_Surface *surface, Uint32 key); | |
| 136 | |
| 137 /* Sets per surface hardware alpha value */ | |
| 138 int (*SetHWAlpha)(_THIS, SDL_Surface *surface, Uint8 value); | |
| 139 | |
| 140 /* Returns a readable/writable surface */ | |
| 141 int (*LockHWSurface)(_THIS, SDL_Surface *surface); | |
| 142 void (*UnlockHWSurface)(_THIS, SDL_Surface *surface); | |
| 143 | |
| 144 /* Performs hardware flipping */ | |
| 145 int (*FlipHWSurface)(_THIS, SDL_Surface *surface); | |
| 146 | |
| 147 /* Frees a previously allocated video surface */ | |
| 148 void (*FreeHWSurface)(_THIS, SDL_Surface *surface); | |
| 149 | |
| 150 /* * * */ | |
| 151 /* Gamma support */ | |
| 152 | |
| 153 Uint16 *gamma; | |
| 154 | |
| 155 /* Set the gamma correction directly (emulated with gamma ramps) */ | |
| 156 int (*SetGamma)(_THIS, float red, float green, float blue); | |
| 157 | |
| 158 /* Get the gamma correction directly (emulated with gamma ramps) */ | |
| 159 int (*GetGamma)(_THIS, float *red, float *green, float *blue); | |
| 160 | |
| 161 /* Set the gamma ramp */ | |
| 162 int (*SetGammaRamp)(_THIS, Uint16 *ramp); | |
| 163 | |
| 164 /* Get the gamma ramp */ | |
| 165 int (*GetGammaRamp)(_THIS, Uint16 *ramp); | |
| 166 | |
| 167 /* * * */ | |
| 168 /* OpenGL support */ | |
| 169 | |
| 170 /* Sets the dll to use for OpenGL and loads it */ | |
| 171 int (*GL_LoadLibrary)(_THIS, const char *path); | |
| 172 | |
| 173 /* Retrieves the address of a function in the gl library */ | |
| 174 void* (*GL_GetProcAddress)(_THIS, const char *proc); | |
| 175 | |
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176 /* Get attribute information from the windowing system. */ |
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177 int (*GL_GetAttribute)(_THIS, SDL_GLattr attrib, int* value); |
| 0 | 178 |
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179 /* Make the context associated with this driver current */ |
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180 int (*GL_MakeCurrent)(_THIS); |
| 0 | 181 |
| 182 /* Swap the current buffers in double buffer mode. */ | |
| 183 void (*GL_SwapBuffers)(_THIS); | |
| 184 | |
| 185 /* OpenGL functions for SDL_OPENGLBLIT */ | |
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186 #if SDL_VIDEO_OPENGL |
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187 #if !defined(__WIN32__) |
| 0 | 188 #define WINAPI |
| 189 #endif | |
| 190 #define SDL_PROC(ret,func,params) ret (WINAPI *func) params; | |
| 191 #include "SDL_glfuncs.h" | |
| 192 #undef SDL_PROC | |
| 193 | |
| 194 /* Texture id */ | |
| 195 GLuint texture; | |
| 196 #endif | |
| 197 int is_32bit; | |
| 198 | |
| 199 /* * * */ | |
| 200 /* Window manager functions */ | |
| 201 | |
| 202 /* Set the title and icon text */ | |
| 203 void (*SetCaption)(_THIS, const char *title, const char *icon); | |
| 204 | |
| 205 /* Set the window icon image */ | |
| 206 void (*SetIcon)(_THIS, SDL_Surface *icon, Uint8 *mask); | |
| 207 | |
| 208 /* Iconify the window. | |
| 209 This function returns 1 if there is a window manager and the | |
| 210 window was actually iconified, it returns 0 otherwise. | |
| 211 */ | |
| 212 int (*IconifyWindow)(_THIS); | |
| 213 | |
| 214 /* Grab or ungrab keyboard and mouse input */ | |
| 215 SDL_GrabMode (*GrabInput)(_THIS, SDL_GrabMode mode); | |
| 216 | |
| 217 /* Get some platform dependent window information */ | |
| 218 int (*GetWMInfo)(_THIS, SDL_SysWMinfo *info); | |
| 219 | |
| 220 /* * * */ | |
| 221 /* Cursor manager functions */ | |
| 222 | |
| 223 /* Free a window manager cursor | |
| 224 This function can be NULL if CreateWMCursor is also NULL. | |
| 225 */ | |
| 226 void (*FreeWMCursor)(_THIS, WMcursor *cursor); | |
| 227 | |
| 228 /* If not NULL, create a black/white window manager cursor */ | |
| 229 WMcursor *(*CreateWMCursor)(_THIS, | |
| 230 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y); | |
| 231 | |
| 232 /* Show the specified cursor, or hide if cursor is NULL */ | |
| 233 int (*ShowWMCursor)(_THIS, WMcursor *cursor); | |
| 234 | |
| 235 /* Warp the window manager cursor to (x,y) | |
| 236 If NULL, a mouse motion event is posted internally. | |
| 237 */ | |
| 238 void (*WarpWMCursor)(_THIS, Uint16 x, Uint16 y); | |
| 239 | |
| 240 /* If not NULL, this is called when a mouse motion event occurs */ | |
| 241 void (*MoveWMCursor)(_THIS, int x, int y); | |
| 242 | |
| 243 /* Determine whether the mouse should be in relative mode or not. | |
| 244 This function is called when the input grab state or cursor | |
| 245 visibility state changes. | |
| 246 If the cursor is not visible, and the input is grabbed, the | |
| 247 driver can place the mouse in relative mode, which may result | |
| 248 in higher accuracy sampling of the pointer motion. | |
| 249 */ | |
| 250 void (*CheckMouseMode)(_THIS); | |
| 251 | |
| 252 /* * * */ | |
| 253 /* Event manager functions */ | |
| 254 | |
| 255 /* Initialize keyboard mapping for this driver */ | |
| 256 void (*InitOSKeymap)(_THIS); | |
| 257 | |
| 258 /* Handle any queued OS events */ | |
| 259 void (*PumpEvents)(_THIS); | |
| 260 | |
| 261 /* * * */ | |
| 262 /* Data common to all drivers */ | |
| 263 SDL_Surface *screen; | |
| 264 SDL_Surface *shadow; | |
| 265 SDL_Surface *visible; | |
| 266 SDL_Palette *physpal; /* physical palette, if != logical palette */ | |
| 267 SDL_Color *gammacols; /* gamma-corrected colours, or NULL */ | |
| 268 char *wm_title; | |
| 269 char *wm_icon; | |
| 270 int offset_x; | |
| 271 int offset_y; | |
| 272 SDL_GrabMode input_grab; | |
| 273 | |
| 274 /* Driver information flags */ | |
| 275 int handles_any_size; /* Driver handles any size video mode */ | |
| 276 | |
| 277 /* * * */ | |
| 278 /* Data used by the GL drivers */ | |
| 279 struct { | |
| 280 int red_size; | |
| 281 int green_size; | |
| 282 int blue_size; | |
| 283 int alpha_size; | |
| 284 int depth_size; | |
|
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285 int buffer_size; |
| 0 | 286 int stencil_size; |
| 287 int double_buffer; | |
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288 int accum_red_size; |
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289 int accum_green_size; |
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290 int accum_blue_size; |
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291 int accum_alpha_size; |
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292 int stereo; |
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293 int multisamplebuffers; |
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294 int multisamplesamples; |
| 0 | 295 int driver_loaded; |
| 296 char driver_path[256]; | |
| 297 void* dll_handle; | |
| 298 } gl_config; | |
| 299 | |
| 300 /* * * */ | |
| 301 /* Data private to this driver */ | |
| 302 struct SDL_PrivateVideoData *hidden; | |
| 303 struct SDL_PrivateGLData *gl_data; | |
| 304 | |
| 305 /* * * */ | |
| 306 /* The function used to dispose of this structure */ | |
| 307 void (*free)(_THIS); | |
| 308 }; | |
| 309 #undef _THIS | |
| 310 | |
| 311 typedef struct VideoBootStrap { | |
| 312 const char *name; | |
| 313 const char *desc; | |
| 314 int (*available)(void); | |
| 315 SDL_VideoDevice *(*create)(int devindex); | |
| 316 } VideoBootStrap; | |
| 317 | |
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318 #if SDL_VIDEO_DRIVER_QUARTZ |
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319 extern VideoBootStrap QZ_bootstrap; |
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320 #endif |
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321 #if SDL_VIDEO_DRIVER_X11 |
| 0 | 322 extern VideoBootStrap X11_bootstrap; |
| 323 #endif | |
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324 #if SDL_VIDEO_DRIVER_DGA |
| 0 | 325 extern VideoBootStrap DGA_bootstrap; |
| 326 #endif | |
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327 #if SDL_VIDEO_DRIVER_NANOX |
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328 extern VideoBootStrap NX_bootstrap; |
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329 #endif |
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330 #if SDL_VIDEO_DRIVER_IPOD |
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331 extern VideoBootStrap iPod_bootstrap; |
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332 #endif |
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333 #if SDL_VIDEO_DRIVER_QTOPIA |
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334 extern VideoBootStrap Qtopia_bootstrap; |
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335 #endif |
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336 #if SDL_VIDEO_DRIVER_WSCONS |
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337 extern VideoBootStrap WSCONS_bootstrap; |
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338 #endif |
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339 #if SDL_VIDEO_DRIVER_FBCON |
| 0 | 340 extern VideoBootStrap FBCON_bootstrap; |
| 341 #endif | |
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342 #if SDL_VIDEO_DRIVER_DIRECTFB |
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343 extern VideoBootStrap DirectFB_bootstrap; |
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344 #endif |
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345 #if SDL_VIDEO_DRIVER_PS2GS |
| 0 | 346 extern VideoBootStrap PS2GS_bootstrap; |
| 347 #endif | |
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348 #if SDL_VIDEO_DRIVER_GGI |
| 0 | 349 extern VideoBootStrap GGI_bootstrap; |
| 350 #endif | |
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351 #if SDL_VIDEO_DRIVER_VGL |
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352 extern VideoBootStrap VGL_bootstrap; |
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353 #endif |
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354 #if SDL_VIDEO_DRIVER_SVGALIB |
| 0 | 355 extern VideoBootStrap SVGALIB_bootstrap; |
| 356 #endif | |
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357 #if SDL_VIDEO_DRIVER_GAPI |
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358 extern VideoBootStrap GAPI_bootstrap; |
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359 #endif |
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360 #if SDL_VIDEO_DRIVER_WINDIB |
| 0 | 361 extern VideoBootStrap WINDIB_bootstrap; |
| 362 #endif | |
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363 #if SDL_VIDEO_DRIVER_DDRAW |
| 0 | 364 extern VideoBootStrap DIRECTX_bootstrap; |
| 365 #endif | |
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366 #if SDL_VIDEO_DRIVER_BWINDOW |
| 0 | 367 extern VideoBootStrap BWINDOW_bootstrap; |
| 368 #endif | |
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369 #if SDL_VIDEO_DRIVER_TOOLBOX |
| 0 | 370 extern VideoBootStrap TOOLBOX_bootstrap; |
| 371 #endif | |
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372 #if SDL_VIDEO_DRIVER_DRAWSPROCKET |
| 0 | 373 extern VideoBootStrap DSp_bootstrap; |
| 374 #endif | |
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375 #if SDL_VIDEO_DRIVER_CYBERGRAPHICS |
| 0 | 376 extern VideoBootStrap CGX_bootstrap; |
| 377 #endif | |
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378 #if SDL_VIDEO_DRIVER_PHOTON |
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379 extern VideoBootStrap ph_bootstrap; |
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380 #endif |
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381 #if SDL_VIDEO_DRIVER_EPOC |
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382 extern VideoBootStrap EPOC_bootstrap; |
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383 #endif |
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384 #if SDL_VIDEO_DRIVER_XBIOS |
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385 extern VideoBootStrap XBIOS_bootstrap; |
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386 #endif |
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387 #if SDL_VIDEO_DRIVER_GEM |
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388 extern VideoBootStrap GEM_bootstrap; |
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389 #endif |
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390 #if SDL_VIDEO_DRIVER_PICOGUI |
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391 extern VideoBootStrap PG_bootstrap; |
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392 #endif |
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393 #if SDL_VIDEO_DRIVER_DC |
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394 extern VideoBootStrap DC_bootstrap; |
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395 #endif |
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396 #if SDL_VIDEO_DRIVER_RISCOS |
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397 extern VideoBootStrap RISCOS_bootstrap; |
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398 #endif |
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399 #if SDL_VIDEO_DRIVER_OS2FS |
| 1190 | 400 extern VideoBootStrap OS2FSLib_bootstrap; |
| 401 #endif | |
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402 #if SDL_VIDEO_DRIVER_AALIB |
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403 extern VideoBootStrap AALIB_bootstrap; |
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404 #endif |
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405 #if SDL_VIDEO_DRIVER_DUMMY |
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406 extern VideoBootStrap DUMMY_bootstrap; |
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407 #endif |
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408 |
| 0 | 409 /* This is the current video device */ |
| 410 extern SDL_VideoDevice *current_video; | |
| 411 | |
| 412 #define SDL_VideoSurface (current_video->screen) | |
| 413 #define SDL_ShadowSurface (current_video->shadow) | |
| 414 #define SDL_PublicSurface (current_video->visible) | |
| 415 | |
| 416 #endif /* _SDL_sysvideo_h */ |