Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Mar 2006 12:05:16 +0000 |
| parents | 8d9bb0cf2c2a |
| children | 0a53c90a37f9 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 /* The high-level video driver subsystem */ | |
| 25 | |
| 26 #include "SDL.h" | |
| 27 #include "SDL_sysvideo.h" | |
| 28 #include "SDL_blit.h" | |
| 29 #include "SDL_pixels_c.h" | |
| 30 #include "SDL_cursor_c.h" | |
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31 #include "../events/SDL_sysevents.h" |
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32 #include "../events/SDL_events_c.h" |
| 0 | 33 |
| 34 /* Available video drivers */ | |
| 35 static VideoBootStrap *bootstrap[] = { | |
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36 #if SDL_VIDEO_DRIVER_QUARTZ |
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37 &QZ_bootstrap, |
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38 #endif |
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39 #if SDL_VIDEO_DRIVER_X11 |
| 0 | 40 &X11_bootstrap, |
| 41 #endif | |
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42 #if SDL_VIDEO_DRIVER_DGA |
| 0 | 43 &DGA_bootstrap, |
| 44 #endif | |
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45 #if SDL_VIDEO_DRIVER_NANOX |
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46 &NX_bootstrap, |
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47 #endif |
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48 #if SDL_VIDEO_DRIVER_IPOD |
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49 &iPod_bootstrap, |
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50 #endif |
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51 #if SDL_VIDEO_DRIVER_QTOPIA |
| 567 | 52 &Qtopia_bootstrap, |
| 53 #endif | |
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54 #if SDL_VIDEO_DRIVER_WSCONS |
| 1187 | 55 &WSCONS_bootstrap, |
| 56 #endif | |
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57 #if SDL_VIDEO_DRIVER_FBCON |
| 0 | 58 &FBCON_bootstrap, |
| 59 #endif | |
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60 #if SDL_VIDEO_DRIVER_DIRECTFB |
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61 &DirectFB_bootstrap, |
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62 #endif |
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63 #if SDL_VIDEO_DRIVER_PS2GS |
| 0 | 64 &PS2GS_bootstrap, |
| 65 #endif | |
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66 #if SDL_VIDEO_DRIVER_GGI |
| 0 | 67 &GGI_bootstrap, |
| 68 #endif | |
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69 #if SDL_VIDEO_DRIVER_VGL |
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70 &VGL_bootstrap, |
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71 #endif |
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72 #if SDL_VIDEO_DRIVER_SVGALIB |
| 0 | 73 &SVGALIB_bootstrap, |
| 74 #endif | |
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75 #if SDL_VIDEO_DRIVER_GAPI |
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76 &GAPI_bootstrap, |
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77 #endif |
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78 #if SDL_VIDEO_DRIVER_WINDIB |
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79 &WINDIB_bootstrap, |
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80 #endif |
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81 #if SDL_VIDEO_DRIVER_DDRAW |
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82 &DIRECTX_bootstrap, |
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83 #endif |
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84 #if SDL_VIDEO_DRIVER_BWINDOW |
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85 &BWINDOW_bootstrap, |
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86 #endif |
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87 #if SDL_VIDEO_DRIVER_TOOLBOX |
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88 &TOOLBOX_bootstrap, |
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89 #endif |
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90 #if SDL_VIDEO_DRIVER_DRAWSPROCKET |
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91 &DSp_bootstrap, |
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92 #endif |
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93 #if SDL_VIDEO_DRIVER_CYBERGRAPHICS |
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94 &CGX_bootstrap, |
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95 #endif |
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96 #if SDL_VIDEO_DRIVER_PHOTON |
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97 &ph_bootstrap, |
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98 #endif |
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99 #if SDL_VIDEO_DRIVER_EPOC |
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100 &EPOC_bootstrap, |
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101 #endif |
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102 #if SDL_VIDEO_DRIVER_XBIOS |
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103 &XBIOS_bootstrap, |
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104 #endif |
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105 #if SDL_VIDEO_DRIVER_GEM |
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106 &GEM_bootstrap, |
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107 #endif |
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108 #if SDL_VIDEO_DRIVER_PICOGUI |
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109 &PG_bootstrap, |
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110 #endif |
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111 #if SDL_VIDEO_DRIVER_DC |
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112 &DC_bootstrap, |
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113 #endif |
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114 #if SDL_VIDEO_DRIVER_RISCOS |
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115 &RISCOS_bootstrap, |
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116 #endif |
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117 #if SDL_VIDEO_DRIVER_OS2FS |
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118 &OS2FSLib_bootstrap, |
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119 #endif |
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120 #if SDL_VIDEO_DRIVER_AALIB |
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121 &AALIB_bootstrap, |
| 0 | 122 #endif |
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123 #if SDL_VIDEO_DRIVER_DUMMY |
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124 &DUMMY_bootstrap, |
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125 #endif |
| 0 | 126 NULL |
| 127 }; | |
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128 |
| 0 | 129 SDL_VideoDevice *current_video = NULL; |
| 130 | |
| 131 /* Various local functions */ | |
| 132 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 133 void SDL_VideoQuit(void); | |
| 134 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 135 | |
| 136 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
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137 #if SDL_VIDEO_OPENGL |
| 0 | 138 static int lock_count = 0; |
| 139 #endif | |
| 140 | |
| 141 | |
| 142 /* | |
| 143 * Initialize the video and event subsystems -- determine native pixel format | |
| 144 */ | |
| 145 int SDL_VideoInit (const char *driver_name, Uint32 flags) | |
| 146 { | |
| 147 SDL_VideoDevice *video; | |
| 148 int index; | |
| 149 int i; | |
| 150 SDL_PixelFormat vformat; | |
| 151 Uint32 video_flags; | |
| 152 | |
| 153 /* Toggle the event thread flags, based on OS requirements */ | |
| 154 #if defined(MUST_THREAD_EVENTS) | |
| 155 flags |= SDL_INIT_EVENTTHREAD; | |
| 156 #elif defined(CANT_THREAD_EVENTS) | |
| 157 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 158 SDL_SetError("OS doesn't support threaded events"); | |
| 159 return(-1); | |
| 160 } | |
| 161 #endif | |
| 162 | |
| 163 /* Check to make sure we don't overwrite 'current_video' */ | |
| 164 if ( current_video != NULL ) { | |
| 165 SDL_VideoQuit(); | |
| 166 } | |
| 167 | |
| 168 /* Select the proper video driver */ | |
| 169 index = 0; | |
| 170 video = NULL; | |
| 171 if ( driver_name != NULL ) { | |
| 172 #if 0 /* This will be replaced with a better driver selection API */ | |
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173 if ( SDL_strrchr(driver_name, ':') != NULL ) { |
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174 index = atoi(SDL_strrchr(driver_name, ':')+1); |
| 0 | 175 } |
| 176 #endif | |
| 177 for ( i=0; bootstrap[i]; ++i ) { | |
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178 if ( SDL_strncmp(bootstrap[i]->name, driver_name, |
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179 SDL_strlen(bootstrap[i]->name)) == 0 ) { |
| 0 | 180 if ( bootstrap[i]->available() ) { |
| 181 video = bootstrap[i]->create(index); | |
| 182 break; | |
| 183 } | |
| 184 } | |
| 185 } | |
| 186 } else { | |
| 187 for ( i=0; bootstrap[i]; ++i ) { | |
| 188 if ( bootstrap[i]->available() ) { | |
| 189 video = bootstrap[i]->create(index); | |
| 190 if ( video != NULL ) { | |
| 191 break; | |
| 192 } | |
| 193 } | |
| 194 } | |
| 195 } | |
| 196 if ( video == NULL ) { | |
| 197 SDL_SetError("No available video device"); | |
| 198 return(-1); | |
| 199 } | |
| 200 current_video = video; | |
| 201 current_video->name = bootstrap[i]->name; | |
| 202 | |
| 203 /* Do some basic variable initialization */ | |
| 204 video->screen = NULL; | |
| 205 video->shadow = NULL; | |
| 206 video->visible = NULL; | |
| 207 video->physpal = NULL; | |
| 208 video->gammacols = NULL; | |
| 209 video->gamma = NULL; | |
| 210 video->wm_title = NULL; | |
| 211 video->wm_icon = NULL; | |
| 212 video->offset_x = 0; | |
| 213 video->offset_y = 0; | |
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214 SDL_memset(&video->info, 0, (sizeof video->info)); |
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215 |
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216 video->displayformatalphapixel = NULL; |
| 0 | 217 |
| 218 /* Set some very sane GL defaults */ | |
| 219 video->gl_config.driver_loaded = 0; | |
| 220 video->gl_config.dll_handle = NULL; | |
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221 video->gl_config.red_size = 3; |
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222 video->gl_config.green_size = 3; |
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223 video->gl_config.blue_size = 2; |
| 0 | 224 video->gl_config.alpha_size = 0; |
| 225 video->gl_config.buffer_size = 0; | |
| 226 video->gl_config.depth_size = 16; | |
| 227 video->gl_config.stencil_size = 0; | |
| 228 video->gl_config.double_buffer = 1; | |
| 229 video->gl_config.accum_red_size = 0; | |
| 230 video->gl_config.accum_green_size = 0; | |
| 231 video->gl_config.accum_blue_size = 0; | |
| 232 video->gl_config.accum_alpha_size = 0; | |
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233 video->gl_config.stereo = 0; |
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234 video->gl_config.multisamplebuffers = 0; |
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235 video->gl_config.multisamplesamples = 0; |
| 0 | 236 |
| 237 /* Initialize the video subsystem */ | |
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238 SDL_memset(&vformat, 0, sizeof(vformat)); |
| 0 | 239 if ( video->VideoInit(video, &vformat) < 0 ) { |
| 240 SDL_VideoQuit(); | |
| 241 return(-1); | |
| 242 } | |
| 243 | |
| 244 /* Create a zero sized video surface of the appropriate format */ | |
| 245 video_flags = SDL_SWSURFACE; | |
| 246 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 247 vformat.BitsPerPixel, | |
| 248 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 249 if ( SDL_VideoSurface == NULL ) { | |
| 250 SDL_VideoQuit(); | |
| 251 return(-1); | |
| 252 } | |
| 253 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 254 | |
| 255 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 256 * The application can't do anything with the display surface until | |
| 257 * a video mode has been set anyway. :) | |
| 258 */ | |
| 259 /* If we have a palettized surface, create a default palette */ | |
| 260 if ( SDL_VideoSurface->format->palette ) { | |
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261 SDL_PixelFormat *vf = SDL_VideoSurface->format; |
| 0 | 262 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 263 video->SetColors(video, | |
| 264 0, vf->palette->ncolors, vf->palette->colors); | |
| 265 } | |
| 266 #endif | |
| 267 video->info.vfmt = SDL_VideoSurface->format; | |
| 268 | |
| 269 /* Start the event loop */ | |
| 270 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 271 SDL_VideoQuit(); | |
| 272 return(-1); | |
| 273 } | |
| 274 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 275 | |
| 276 /* We're ready to go! */ | |
| 277 return(0); | |
| 278 } | |
| 279 | |
| 280 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 281 { | |
| 282 if ( current_video != NULL ) { | |
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283 SDL_strlcpy(namebuf, current_video->name, maxlen); |
| 0 | 284 return(namebuf); |
| 285 } | |
| 286 return(NULL); | |
| 287 } | |
| 288 | |
| 289 /* | |
| 290 * Get the current display surface | |
| 291 */ | |
| 292 SDL_Surface *SDL_GetVideoSurface(void) | |
| 293 { | |
| 294 SDL_Surface *visible; | |
| 295 | |
| 296 visible = NULL; | |
| 297 if ( current_video ) { | |
| 298 visible = current_video->visible; | |
| 299 } | |
| 300 return(visible); | |
| 301 } | |
| 302 | |
| 303 /* | |
| 304 * Get the current information about the video hardware | |
| 305 */ | |
| 306 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 307 { | |
| 308 const SDL_VideoInfo *info; | |
| 309 | |
| 310 info = NULL; | |
| 311 if ( current_video ) { | |
| 312 info = ¤t_video->info; | |
| 313 } | |
| 314 return(info); | |
| 315 } | |
| 316 | |
| 317 /* | |
| 318 * Return a pointer to an array of available screen dimensions for the | |
| 319 * given format, sorted largest to smallest. Returns NULL if there are | |
| 320 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 321 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 322 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 323 */ | |
| 324 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 325 { | |
| 326 SDL_VideoDevice *video = current_video; | |
| 327 SDL_VideoDevice *this = current_video; | |
| 328 SDL_Rect **modes; | |
| 329 | |
| 330 modes = NULL; | |
| 331 if ( SDL_VideoSurface ) { | |
| 332 if ( format == NULL ) { | |
| 333 format = SDL_VideoSurface->format; | |
| 334 } | |
| 335 modes = video->ListModes(this, format, flags); | |
| 336 } | |
| 337 return(modes); | |
| 338 } | |
| 339 | |
| 340 /* | |
| 341 * Check to see if a particular video mode is supported. | |
| 342 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 343 * or returns the bits-per-pixel of the closest available mode with the | |
| 344 * given width and height. If this bits-per-pixel is different from the | |
| 345 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 346 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 347 */ | |
| 348 static Uint8 SDL_closest_depths[4][8] = { | |
| 349 /* 8 bit closest depth ordering */ | |
| 350 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 351 /* 15,16 bit closest depth ordering */ | |
| 352 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 353 /* 24 bit closest depth ordering */ | |
| 354 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 355 /* 32 bit closest depth ordering */ | |
| 356 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 357 }; | |
| 358 | |
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359 |
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360 #ifdef __MACOS__ /* MPW optimization bug? */ |
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361 #define NEGATIVE_ONE 0xFFFFFFFF |
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362 #else |
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363 #define NEGATIVE_ONE -1 |
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364 #endif |
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365 |
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366 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) |
| 0 | 367 { |
| 368 int table, b, i; | |
| 369 int supported; | |
| 370 SDL_PixelFormat format; | |
| 371 SDL_Rect **sizes; | |
| 372 | |
| 373 /* Currently 1 and 4 bpp are not supported */ | |
| 374 if ( bpp < 8 || bpp > 32 ) { | |
| 375 return(0); | |
| 376 } | |
|
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377 if ( (width <= 0) || (height <= 0) ) { |
| 0 | 378 return(0); |
| 379 } | |
| 380 | |
| 381 /* Search through the list valid of modes */ | |
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382 SDL_memset(&format, 0, sizeof(format)); |
| 0 | 383 supported = 0; |
| 384 table = ((bpp+7)/8)-1; | |
| 385 SDL_closest_depths[table][0] = bpp; | |
| 386 SDL_closest_depths[table][7] = 0; | |
| 387 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 388 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 389 sizes = SDL_ListModes(&format, flags); | |
| 390 if ( sizes == (SDL_Rect **)0 ) { | |
| 391 /* No sizes supported at this bit-depth */ | |
| 392 continue; | |
| 393 } else | |
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394 if (sizes == (SDL_Rect **)NEGATIVE_ONE) { |
| 0 | 395 /* Any size supported at this bit-depth */ |
| 396 supported = 1; | |
| 397 continue; | |
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398 } else if (current_video->handles_any_size) { |
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399 /* Driver can center a smaller surface to simulate fullscreen */ |
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400 for ( i=0; sizes[i]; ++i ) { |
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401 if ((sizes[i]->w >= width) && (sizes[i]->h >= height)) { |
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402 supported = 1; /* this mode can fit the centered window. */ |
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403 break; |
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404 } |
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405 } |
| 0 | 406 } else |
| 407 for ( i=0; sizes[i]; ++i ) { | |
| 408 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 409 supported = 1; | |
| 410 break; | |
| 411 } | |
| 412 } | |
| 413 } | |
| 414 if ( supported ) { | |
| 415 --b; | |
| 416 return(SDL_closest_depths[table][b]); | |
| 417 } else { | |
| 418 return(0); | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 /* | |
| 423 * Get the closest non-emulated video mode to the one requested | |
| 424 */ | |
| 425 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 426 { | |
| 427 int table, b, i; | |
| 428 int supported; | |
| 429 int native_bpp; | |
| 430 SDL_PixelFormat format; | |
| 431 SDL_Rect **sizes; | |
| 432 | |
|
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433 /* Check parameters */ |
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434 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
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435 SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
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436 return(0); |
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437 } |
|
430
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438 if ((*w <= 0) || (*h <= 0)) { |
|
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439 SDL_SetError("Invalid width or height"); |
|
430
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440 return(0); |
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441 } |
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442 |
| 0 | 443 /* Try the original video mode, get the closest depth */ |
| 444 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 445 if ( native_bpp == *BitsPerPixel ) { | |
| 446 return(1); | |
| 447 } | |
| 448 if ( native_bpp > 0 ) { | |
| 449 *BitsPerPixel = native_bpp; | |
| 450 return(1); | |
| 451 } | |
| 452 | |
| 453 /* No exact size match at any depth, look for closest match */ | |
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454 SDL_memset(&format, 0, sizeof(format)); |
| 0 | 455 supported = 0; |
| 456 table = ((*BitsPerPixel+7)/8)-1; | |
| 457 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 458 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 459 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
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460 int best; |
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461 |
| 0 | 462 format.BitsPerPixel = SDL_closest_depths[table][b]; |
| 463 sizes = SDL_ListModes(&format, flags); | |
| 464 if ( sizes == (SDL_Rect **)0 ) { | |
| 465 /* No sizes supported at this bit-depth */ | |
| 466 continue; | |
| 467 } | |
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468 best=0; |
| 0 | 469 for ( i=0; sizes[i]; ++i ) { |
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470 /* Mode with both dimensions bigger or equal than asked ? */ |
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471 if ((sizes[i]->w >= *w) && (sizes[i]->h >= *h)) { |
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472 /* Mode with any dimension smaller or equal than current best ? */ |
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473 if ((sizes[i]->w <= sizes[best]->w) || (sizes[i]->h <= sizes[best]->h)) { |
|
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474 /* Now choose the mode that has less pixels */ |
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475 if ((sizes[i]->w * sizes[i]->h) <= (sizes[best]->w * sizes[best]->h)) { |
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476 best=i; |
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477 supported = 1; |
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478 } |
| 0 | 479 } |
| 480 } | |
| 481 } | |
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482 if (supported) { |
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483 *w=sizes[best]->w; |
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484 *h=sizes[best]->h; |
| 0 | 485 *BitsPerPixel = SDL_closest_depths[table][b]; |
| 486 } | |
| 487 } | |
| 488 if ( ! supported ) { | |
| 489 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 490 } | |
| 491 return(supported); | |
| 492 } | |
| 493 | |
| 494 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 495 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 496 { | |
| 497 Uint32 black; | |
| 498 | |
| 499 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 500 SDL_FillRect(surface, NULL, black); | |
| 501 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 502 SDL_Flip(surface); | |
| 503 SDL_FillRect(surface, NULL, black); | |
| 504 } | |
| 505 SDL_Flip(surface); | |
| 506 } | |
| 507 | |
| 508 /* | |
| 509 * Create a shadow surface suitable for fooling the app. :-) | |
| 510 */ | |
| 511 static void SDL_CreateShadowSurface(int depth) | |
| 512 { | |
| 513 Uint32 Rmask, Gmask, Bmask; | |
| 514 | |
| 515 /* Allocate the shadow surface */ | |
| 516 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 517 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 518 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 519 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 520 } else { | |
| 521 Rmask = Gmask = Bmask = 0; | |
| 522 } | |
| 523 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 524 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 525 depth, Rmask, Gmask, Bmask, 0); | |
| 526 if ( SDL_ShadowSurface == NULL ) { | |
| 527 return; | |
| 528 } | |
| 529 | |
| 530 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 531 if ( SDL_ShadowSurface->format->palette ) { | |
| 532 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 533 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
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534 SDL_memcpy(SDL_ShadowSurface->format->palette->colors, |
| 0 | 535 SDL_VideoSurface->format->palette->colors, |
| 536 SDL_VideoSurface->format->palette->ncolors* | |
| 537 sizeof(SDL_Color)); | |
| 538 } else { | |
| 539 SDL_DitherColors( | |
| 540 SDL_ShadowSurface->format->palette->colors, depth); | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 /* If the video surface is resizable, the shadow should say so */ | |
| 545 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 546 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 547 } | |
| 548 /* If the video surface has no frame, the shadow should say so */ | |
| 549 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 550 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 551 } | |
| 552 /* If the video surface is fullscreen, the shadow should say so */ | |
| 553 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 554 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 555 } | |
| 556 /* If the video surface is flippable, the shadow should say so */ | |
| 557 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 558 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 559 } | |
| 560 return; | |
| 561 } | |
| 562 | |
|
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563 #ifdef __QNXNTO__ |
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564 #include <sys/neutrino.h> |
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565 #endif /* __QNXNTO__ */ |
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566 |
| 0 | 567 /* |
| 568 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 569 */ | |
| 570 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 571 { | |
| 572 SDL_VideoDevice *video, *this; | |
| 573 SDL_Surface *prev_mode, *mode; | |
| 574 int video_w; | |
| 575 int video_h; | |
| 576 int video_bpp; | |
| 577 int is_opengl; | |
| 578 SDL_GrabMode saved_grab; | |
| 579 | |
| 580 /* Start up the video driver, if necessary.. | |
| 581 WARNING: This is the only function protected this way! | |
| 582 */ | |
| 583 if ( ! current_video ) { | |
| 584 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 585 return(NULL); | |
| 586 } | |
| 587 } | |
| 588 this = video = current_video; | |
| 589 | |
|
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Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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590 /* Default to the current width and height */ |
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591 if ( width == 0 ) { |
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592 width = video->info.current_w; |
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593 } |
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594 if ( height == 0 ) { |
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595 height = video->info.current_h; |
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596 } |
| 0 | 597 /* Default to the current video bpp */ |
| 598 if ( bpp == 0 ) { | |
| 599 flags |= SDL_ANYFORMAT; | |
| 600 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 601 } | |
| 602 | |
| 603 /* Get a good video mode, the closest one possible */ | |
| 604 video_w = width; | |
| 605 video_h = height; | |
| 606 video_bpp = bpp; | |
| 607 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 608 return(NULL); | |
| 609 } | |
| 610 | |
| 611 /* Check the requested flags */ | |
| 612 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 613 if ( video_bpp > 8 ) { | |
| 614 flags &= ~SDL_HWPALETTE; | |
| 615 } | |
| 616 #if 0 | |
| 617 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 618 /* There's no windowed double-buffering */ | |
| 619 flags &= ~SDL_DOUBLEBUF; | |
| 620 } | |
| 621 #endif | |
| 622 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 623 /* Use hardware surfaces when double-buffering */ | |
| 624 flags |= SDL_HWSURFACE; | |
| 625 } | |
| 626 | |
| 627 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 628 if ( is_opengl ) { | |
| 629 /* These flags are for 2D video modes only */ | |
| 630 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 631 } | |
| 632 | |
|
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633 /* Reset the keyboard here so event callbacks can run */ |
|
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634 SDL_ResetKeyboard(); |
|
460
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635 SDL_ResetMouse(); |
| 1296 | 636 SDL_cursorstate &= ~CURSOR_USINGSW; |
|
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637 |
| 0 | 638 /* Clean up any previous video mode */ |
| 639 if ( SDL_PublicSurface != NULL ) { | |
| 640 SDL_PublicSurface = NULL; | |
| 641 } | |
| 642 if ( SDL_ShadowSurface != NULL ) { | |
| 643 SDL_Surface *ready_to_go; | |
| 644 ready_to_go = SDL_ShadowSurface; | |
| 645 SDL_ShadowSurface = NULL; | |
| 646 SDL_FreeSurface(ready_to_go); | |
| 647 } | |
| 648 if ( video->physpal ) { | |
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649 SDL_free(video->physpal->colors); |
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650 SDL_free(video->physpal); |
| 0 | 651 video->physpal = NULL; |
| 652 } | |
| 653 if( video->gammacols) { | |
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654 SDL_free(video->gammacols); |
| 0 | 655 video->gammacols = NULL; |
| 656 } | |
| 657 | |
| 658 /* Save the previous grab state and turn off grab for mode switch */ | |
| 659 saved_grab = SDL_WM_GrabInputOff(); | |
| 660 | |
| 661 /* Try to set the video mode, along with offset and clipping */ | |
| 662 prev_mode = SDL_VideoSurface; | |
| 663 SDL_LockCursor(); | |
| 664 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 665 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 666 if ( mode ) { /* Prevent resize events from mode change */ | |
| 1190 | 667 /* But not on OS/2 */ |
| 668 #ifndef __OS2__ | |
| 0 | 669 SDL_PrivateResize(mode->w, mode->h); |
| 1190 | 670 #endif |
|
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671 |
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672 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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673 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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674 mode = NULL; |
|
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675 SDL_SetError("OpenGL not available"); |
|
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676 } |
|
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677 } |
| 0 | 678 /* |
| 679 * rcg11292000 | |
| 680 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 681 * matching visual, then the next call to SDL_SetVideoMode() | |
| 682 * will segfault, since we no longer point to a dummy surface, | |
| 683 * but rather NULL. | |
| 684 * Sam 11/29/00 | |
| 685 * WARNING, we need to make sure that the previous mode hasn't | |
| 686 * already been freed by the video driver. What do we do in | |
| 687 * that case? Should we call SDL_VideoInit() again? | |
| 688 */ | |
| 689 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 690 | |
| 691 if ( (mode != NULL) && (!is_opengl) ) { | |
| 692 /* Sanity check */ | |
| 693 if ( (mode->w < width) || (mode->h < height) ) { | |
| 694 SDL_SetError("Video mode smaller than requested"); | |
| 695 return(NULL); | |
| 696 } | |
| 697 | |
| 698 /* If we have a palettized surface, create a default palette */ | |
| 699 if ( mode->format->palette ) { | |
|
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700 SDL_PixelFormat *vf = mode->format; |
| 0 | 701 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 702 video->SetColors(this, 0, vf->palette->ncolors, | |
| 703 vf->palette->colors); | |
| 704 } | |
| 705 | |
| 706 /* Clear the surface to black */ | |
| 707 video->offset_x = 0; | |
| 708 video->offset_y = 0; | |
| 709 mode->offset = 0; | |
| 710 SDL_SetClipRect(mode, NULL); | |
| 711 SDL_ClearSurface(mode); | |
| 712 | |
| 713 /* Now adjust the offsets to match the desired mode */ | |
| 714 video->offset_x = (mode->w-width)/2; | |
| 715 video->offset_y = (mode->h-height)/2; | |
| 716 mode->offset = video->offset_y*mode->pitch + | |
| 717 video->offset_x*mode->format->BytesPerPixel; | |
| 718 #ifdef DEBUG_VIDEO | |
| 719 fprintf(stderr, | |
| 720 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 721 width, height, bpp, | |
| 722 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 723 #endif | |
| 724 mode->w = width; | |
| 725 mode->h = height; | |
| 726 SDL_SetClipRect(mode, NULL); | |
| 727 } | |
| 728 SDL_ResetCursor(); | |
| 729 SDL_UnlockCursor(); | |
| 730 | |
| 731 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 732 if ( mode == NULL ) { | |
| 733 return(NULL); | |
| 734 } | |
| 735 | |
| 736 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 737 if ( ! video->info.wm_available ) { | |
| 738 mode->flags |= SDL_NOFRAME; | |
| 739 } | |
| 740 | |
| 741 /* Reset the mouse cursor and grab for new video mode */ | |
| 742 SDL_SetCursor(NULL); | |
| 743 if ( video->UpdateMouse ) { | |
| 744 video->UpdateMouse(this); | |
| 745 } | |
| 746 SDL_WM_GrabInput(saved_grab); | |
| 747 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 748 | |
|
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749 #if SDL_VIDEO_OPENGL |
|
650
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750 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
|
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751 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
|
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752 |
|
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753 #if defined(__QNXNTO__) && (_NTO_VERSION < 630) |
|
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754 #define __SDL_NOGETPROCADDR__ |
|
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755 #elif defined(__MINT__) |
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756 #define __SDL_NOGETPROCADDR__ |
|
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757 #endif |
|
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758 #ifdef __SDL_NOGETPROCADDR__ |
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759 #define SDL_PROC(ret,func,params) video->func=func; |
|
663
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760 #else |
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761 #define SDL_PROC(ret,func,params) \ |
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762 do { \ |
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763 video->func = SDL_GL_GetProcAddress(#func); \ |
|
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764 if ( ! video->func ) { \ |
|
1141
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765 SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \ |
|
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766 return(NULL); \ |
|
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767 } \ |
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768 } while ( 0 ); |
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769 |
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770 #endif /* __SDL_NOGETPROCADDR__ */ |
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771 |
|
650
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772 #include "SDL_glfuncs.h" |
|
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773 #undef SDL_PROC |
|
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774 } |
|
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775 #endif /* SDL_VIDEO_OPENGL */ |
|
650
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776 |
| 0 | 777 /* If we're running OpenGL, make the context current */ |
| 778 if ( (video->screen->flags & SDL_OPENGL) && | |
| 779 video->GL_MakeCurrent ) { | |
| 780 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 781 return(NULL); | |
| 782 } | |
| 783 } | |
| 784 | |
| 785 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 786 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 787 /* Load GL functions for performing the texture updates */ | |
|
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|
788 #if SDL_VIDEO_OPENGL |
| 0 | 789 |
| 790 /* Create a software surface for blitting */ | |
| 791 #ifdef GL_VERSION_1_2 | |
| 792 /* If the implementation either supports the packed pixels | |
| 793 extension, or implements the core OpenGL 1.2 API, it will | |
| 794 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 795 */ | |
| 796 if ( (bpp == 16) && | |
|
1336
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797 (SDL_strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
|
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Configure dynamically generates SDL_config.h
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798 (SDL_atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
|
282
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Fixed SDL_OPENGLBLIT with OpenGL API newer than 1.2
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|
799 ) { |
| 0 | 800 video->is_32bit = 0; |
| 801 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 802 flags, | |
| 803 width, | |
| 804 height, | |
| 805 16, | |
| 806 31 << 11, | |
| 807 63 << 5, | |
| 808 31, | |
| 809 0 | |
| 810 ); | |
| 811 } | |
| 812 else | |
| 813 #endif /* OpenGL 1.2 */ | |
| 814 { | |
| 815 video->is_32bit = 1; | |
| 816 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 817 flags, | |
| 818 width, | |
| 819 height, | |
| 820 32, | |
| 821 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 822 0x000000FF, | |
| 823 0x0000FF00, | |
| 824 0x00FF0000, | |
| 825 0xFF000000 | |
| 826 #else | |
| 827 0xFF000000, | |
| 828 0x00FF0000, | |
| 829 0x0000FF00, | |
| 830 0x000000FF | |
| 831 #endif | |
| 832 ); | |
| 833 } | |
| 834 if ( ! SDL_VideoSurface ) { | |
| 835 return(NULL); | |
| 836 } | |
| 837 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 838 | |
| 839 /* Free the original video mode surface (is this safe?) */ | |
| 840 SDL_FreeSurface(mode); | |
| 841 | |
|
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|
842 /* Set the surface completely opaque & white by default */ |
|
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|
843 SDL_memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
| 0 | 844 video->glGenTextures( 1, &video->texture ); |
| 845 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 846 video->glTexImage2D( | |
| 847 GL_TEXTURE_2D, | |
| 848 0, | |
| 849 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 850 256, | |
| 851 256, | |
| 852 0, | |
| 853 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 854 #ifdef GL_VERSION_1_2 | |
| 855 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 856 #else | |
| 857 GL_UNSIGNED_BYTE, | |
| 858 #endif | |
| 859 NULL); | |
| 860 | |
| 861 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 862 #else | |
|
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New configure-based build system. Still work in progress, but much improved
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|
863 SDL_SetError("Somebody forgot to #define SDL_VIDEO_OPENGL"); |
| 0 | 864 return(NULL); |
| 865 #endif | |
| 866 } | |
| 867 | |
| 868 /* Create a shadow surface if necessary */ | |
| 869 /* There are three conditions under which we create a shadow surface: | |
| 870 1. We need a particular bits-per-pixel that we didn't get. | |
| 871 2. We need a hardware palette and didn't get one. | |
| 872 3. We need a software surface and got a hardware surface. | |
| 873 */ | |
| 874 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 875 ( | |
| 876 ( !(flags&SDL_ANYFORMAT) && | |
| 877 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 878 ( (flags&SDL_HWPALETTE) && | |
| 879 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 880 /* If the surface is in hardware, video writes are visible | |
| 881 as soon as they are performed, so we need to buffer them | |
| 882 */ | |
| 883 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
|
580
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884 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
|
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885 ( (flags&SDL_DOUBLEBUF) && |
|
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|
886 (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
|
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887 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 0 | 888 ) ) { |
| 889 SDL_CreateShadowSurface(bpp); | |
| 890 if ( SDL_ShadowSurface == NULL ) { | |
| 891 SDL_SetError("Couldn't create shadow surface"); | |
| 892 return(NULL); | |
| 893 } | |
| 894 SDL_PublicSurface = SDL_ShadowSurface; | |
| 895 } else { | |
| 896 SDL_PublicSurface = SDL_VideoSurface; | |
| 897 } | |
| 898 video->info.vfmt = SDL_VideoSurface->format; | |
|
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899 video->info.current_w = SDL_VideoSurface->w; |
|
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Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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900 video->info.current_h = SDL_VideoSurface->h; |
| 0 | 901 |
| 902 /* We're done! */ | |
| 903 return(SDL_PublicSurface); | |
| 904 } | |
| 905 | |
| 906 /* | |
| 907 * Convert a surface into the video pixel format. | |
| 908 */ | |
| 909 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 910 { | |
| 911 Uint32 flags; | |
| 912 | |
| 913 if ( ! SDL_PublicSurface ) { | |
| 914 SDL_SetError("No video mode has been set"); | |
| 915 return(NULL); | |
| 916 } | |
| 917 /* Set the flags appropriate for copying to display surface */ | |
|
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918 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
|
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919 flags = SDL_HWSURFACE; |
|
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920 else |
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921 flags = SDL_SWSURFACE; |
| 0 | 922 #ifdef AUTORLE_DISPLAYFORMAT |
| 923 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 924 flags |= SDL_RLEACCELOK; | |
| 925 #else | |
| 926 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 927 #endif | |
| 928 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 929 } | |
| 930 | |
| 931 /* | |
| 932 * Convert a surface into a format that's suitable for blitting to | |
| 933 * the screen, but including an alpha channel. | |
| 934 */ | |
| 935 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 936 { | |
| 937 SDL_PixelFormat *vf; | |
| 938 SDL_PixelFormat *format; | |
| 939 SDL_Surface *converted; | |
| 940 Uint32 flags; | |
| 941 /* default to ARGB8888 */ | |
| 942 Uint32 amask = 0xff000000; | |
| 943 Uint32 rmask = 0x00ff0000; | |
| 944 Uint32 gmask = 0x0000ff00; | |
| 945 Uint32 bmask = 0x000000ff; | |
| 946 | |
| 947 if ( ! SDL_PublicSurface ) { | |
| 948 SDL_SetError("No video mode has been set"); | |
| 949 return(NULL); | |
| 950 } | |
| 951 vf = SDL_PublicSurface->format; | |
| 952 | |
| 953 switch(vf->BytesPerPixel) { | |
| 954 case 2: | |
| 955 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 956 For anything else (like ARGB4444) it doesn't matter | |
| 957 since we have no special code for it anyway */ | |
| 958 if ( (vf->Rmask == 0x1f) && | |
| 959 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 960 rmask = 0xff; | |
| 961 bmask = 0xff0000; | |
| 962 } | |
| 963 break; | |
| 964 | |
| 965 case 3: | |
| 966 case 4: | |
| 967 /* Keep the video format, as long as the high 8 bits are | |
| 968 unused or alpha */ | |
| 969 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 970 rmask = 0xff; | |
| 971 bmask = 0xff0000; | |
| 972 } | |
| 973 break; | |
| 974 | |
| 975 default: | |
| 976 /* We have no other optimised formats right now. When/if a new | |
| 977 optimised alpha format is written, add the converter here */ | |
| 978 break; | |
| 979 } | |
| 980 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 981 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 982 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 983 converted = SDL_ConvertSurface(surface, format, flags); | |
| 984 SDL_FreeFormat(format); | |
| 985 return(converted); | |
| 986 } | |
| 987 | |
| 988 /* | |
| 989 * Update a specific portion of the physical screen | |
| 990 */ | |
| 991 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 992 { | |
| 993 if ( screen ) { | |
| 994 SDL_Rect rect; | |
| 995 | |
| 996 /* Perform some checking */ | |
| 997 if ( w == 0 ) | |
| 998 w = screen->w; | |
| 999 if ( h == 0 ) | |
| 1000 h = screen->h; | |
| 1001 if ( (int)(x+w) > screen->w ) | |
| 1002 return; | |
| 1003 if ( (int)(y+h) > screen->h ) | |
| 1004 return; | |
| 1005 | |
| 1006 /* Fill the rectangle */ | |
|
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1007 rect.x = (Sint16)x; |
|
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1008 rect.y = (Sint16)y; |
|
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1009 rect.w = (Uint16)w; |
|
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|
1010 rect.h = (Uint16)h; |
| 0 | 1011 SDL_UpdateRects(screen, 1, &rect); |
| 1012 } | |
| 1013 } | |
| 1014 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 1015 { | |
| 1016 int i; | |
| 1017 SDL_VideoDevice *video = current_video; | |
| 1018 SDL_VideoDevice *this = current_video; | |
| 1019 | |
|
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1020 if ( (screen->flags & (SDL_OPENGL | SDL_OPENGLBLIT)) == SDL_OPENGL ) { |
|
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1021 SDL_SetError("OpenGL active, use SDL_GL_SwapBuffers()"); |
|
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1022 return; |
|
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1023 } |
| 0 | 1024 if ( screen == SDL_ShadowSurface ) { |
| 1025 /* Blit the shadow surface using saved mapping */ | |
|
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1026 SDL_Palette *pal = screen->format->palette; |
| 0 | 1027 SDL_Color *saved_colors = NULL; |
|
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1028 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1029 /* simulated 8bpp, use correct physical palette */ |
| 1030 saved_colors = pal->colors; | |
| 1031 if ( video->gammacols ) { | |
| 1032 /* gamma-corrected palette */ | |
| 1033 pal->colors = video->gammacols; | |
| 1034 } else if ( video->physpal ) { | |
| 1035 /* physical palette different from logical */ | |
| 1036 pal->colors = video->physpal->colors; | |
| 1037 } | |
| 1038 } | |
| 1039 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 1040 SDL_LockCursor(); | |
| 1041 SDL_DrawCursor(SDL_ShadowSurface); | |
| 1042 for ( i=0; i<numrects; ++i ) { | |
| 1043 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1044 SDL_VideoSurface, &rects[i]); | |
| 1045 } | |
| 1046 SDL_EraseCursor(SDL_ShadowSurface); | |
| 1047 SDL_UnlockCursor(); | |
| 1048 } else { | |
| 1049 for ( i=0; i<numrects; ++i ) { | |
| 1050 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1051 SDL_VideoSurface, &rects[i]); | |
| 1052 } | |
| 1053 } | |
|
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1054 if ( saved_colors ) { |
| 0 | 1055 pal->colors = saved_colors; |
|
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|
1056 } |
| 0 | 1057 |
| 1058 /* Fall through to video surface update */ | |
| 1059 screen = SDL_VideoSurface; | |
| 1060 } | |
| 1061 if ( screen == SDL_VideoSurface ) { | |
| 1062 /* Update the video surface */ | |
| 1063 if ( screen->offset ) { | |
| 1064 for ( i=0; i<numrects; ++i ) { | |
| 1065 rects[i].x += video->offset_x; | |
| 1066 rects[i].y += video->offset_y; | |
| 1067 } | |
| 1068 video->UpdateRects(this, numrects, rects); | |
| 1069 for ( i=0; i<numrects; ++i ) { | |
| 1070 rects[i].x -= video->offset_x; | |
| 1071 rects[i].y -= video->offset_y; | |
| 1072 } | |
| 1073 } else { | |
| 1074 video->UpdateRects(this, numrects, rects); | |
| 1075 } | |
| 1076 } | |
| 1077 } | |
| 1078 | |
| 1079 /* | |
| 1080 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1081 */ | |
| 1082 int SDL_Flip(SDL_Surface *screen) | |
| 1083 { | |
| 1084 SDL_VideoDevice *video = current_video; | |
| 1085 /* Copy the shadow surface to the video surface */ | |
| 1086 if ( screen == SDL_ShadowSurface ) { | |
| 1087 SDL_Rect rect; | |
|
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1088 SDL_Palette *pal = screen->format->palette; |
| 0 | 1089 SDL_Color *saved_colors = NULL; |
|
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1090 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1091 /* simulated 8bpp, use correct physical palette */ |
| 1092 saved_colors = pal->colors; | |
| 1093 if ( video->gammacols ) { | |
| 1094 /* gamma-corrected palette */ | |
| 1095 pal->colors = video->gammacols; | |
| 1096 } else if ( video->physpal ) { | |
| 1097 /* physical palette different from logical */ | |
| 1098 pal->colors = video->physpal->colors; | |
| 1099 } | |
| 1100 } | |
| 1101 | |
| 1102 rect.x = 0; | |
| 1103 rect.y = 0; | |
| 1104 rect.w = screen->w; | |
| 1105 rect.h = screen->h; | |
|
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1106 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
|
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1107 SDL_LockCursor(); |
|
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1108 SDL_DrawCursor(SDL_ShadowSurface); |
|
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1109 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1110 SDL_VideoSurface, &rect); |
|
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1111 SDL_EraseCursor(SDL_ShadowSurface); |
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1112 SDL_UnlockCursor(); |
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1113 } else { |
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1114 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1115 SDL_VideoSurface, &rect); |
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1116 } |
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1117 if ( saved_colors ) { |
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1118 pal->colors = saved_colors; |
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1119 } |
| 0 | 1120 |
|
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1121 /* Fall through to video surface update */ |
| 0 | 1122 screen = SDL_VideoSurface; |
| 1123 } | |
| 1124 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1125 SDL_VideoDevice *this = current_video; | |
| 1126 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1127 } else { | |
| 1128 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1129 } | |
| 1130 return(0); | |
| 1131 } | |
| 1132 | |
| 1133 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1134 int firstcolor, int ncolors) | |
| 1135 { | |
|
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1136 SDL_Palette *pal = screen->format->palette; |
| 0 | 1137 SDL_Palette *vidpal; |
| 1138 | |
| 1139 if ( colors != (pal->colors + firstcolor) ) { | |
|
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1140 SDL_memcpy(pal->colors + firstcolor, colors, |
| 0 | 1141 ncolors * sizeof(*colors)); |
| 1142 } | |
| 1143 | |
| 1144 vidpal = SDL_VideoSurface->format->palette; | |
| 1145 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
|
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1146 /* |
| 0 | 1147 * This is a shadow surface, and the physical |
| 1148 * framebuffer is also indexed. Propagate the | |
| 1149 * changes to its logical palette so that | |
| 1150 * updates are always identity blits | |
| 1151 */ | |
|
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|
1152 SDL_memcpy(vidpal->colors + firstcolor, colors, |
| 0 | 1153 ncolors * sizeof(*colors)); |
| 1154 } | |
| 1155 SDL_FormatChanged(screen); | |
| 1156 } | |
| 1157 | |
| 1158 static int SetPalette_physical(SDL_Surface *screen, | |
| 1159 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1160 { | |
| 1161 SDL_VideoDevice *video = current_video; | |
| 1162 int gotall = 1; | |
| 1163 | |
| 1164 if ( video->physpal ) { | |
| 1165 /* We need to copy the new colors, since we haven't | |
| 1166 * already done the copy in the logical set above. | |
| 1167 */ | |
|
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|
1168 SDL_memcpy(video->physpal->colors + firstcolor, |
| 0 | 1169 colors, ncolors * sizeof(*colors)); |
| 1170 } | |
| 1171 if ( screen == SDL_ShadowSurface ) { | |
| 1172 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1173 /* | |
| 1174 * The real screen is also indexed - set its physical | |
| 1175 * palette. The physical palette does not include the | |
| 1176 * gamma modification, we apply it directly instead, | |
| 1177 * but this only happens if we have hardware palette. | |
| 1178 */ | |
| 1179 screen = SDL_VideoSurface; | |
| 1180 } else { | |
| 1181 /* | |
| 1182 * The video surface is not indexed - invalidate any | |
| 1183 * active shadow-to-video blit mappings. | |
| 1184 */ | |
| 1185 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1186 SDL_InvalidateMap(screen->map); | |
| 1187 } | |
| 1188 if ( video->gamma ) { | |
| 1189 if( ! video->gammacols ) { | |
| 1190 SDL_Palette *pp = video->physpal; | |
| 1191 if(!pp) | |
| 1192 pp = screen->format->palette; | |
|
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|
1193 video->gammacols = SDL_malloc(pp->ncolors |
| 0 | 1194 * sizeof(SDL_Color)); |
| 1195 SDL_ApplyGamma(video->gamma, | |
| 1196 pp->colors, | |
| 1197 video->gammacols, | |
| 1198 pp->ncolors); | |
| 1199 } else { | |
| 1200 SDL_ApplyGamma(video->gamma, colors, | |
| 1201 video->gammacols | |
| 1202 + firstcolor, | |
| 1203 ncolors); | |
| 1204 } | |
| 1205 } | |
| 1206 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1207 } | |
| 1208 } | |
| 1209 | |
| 1210 if ( screen == SDL_VideoSurface ) { | |
| 1211 SDL_Color gcolors[256]; | |
| 1212 | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1213 if ( video->gamma ) { |
|
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diff
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|
1214 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
| 0 | 1215 colors = gcolors; |
| 1216 } | |
| 1217 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1218 if ( ! gotall ) { | |
| 1219 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1220 the video driver is responsible for copying back the | |
| 1221 correct colors into the video surface palette. | |
| 1222 */ | |
| 1223 ; | |
| 1224 } | |
| 1225 SDL_CursorPaletteChanged(); | |
| 1226 } | |
| 1227 return gotall; | |
| 1228 } | |
| 1229 | |
| 1230 /* | |
| 1231 * Set the physical and/or logical colormap of a surface: | |
| 1232 * Only the screen has a physical colormap. It determines what is actually | |
| 1233 * sent to the display. | |
| 1234 * The logical colormap is used to map blits to/from the surface. | |
| 1235 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1236 * | |
| 1237 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1238 */ | |
| 1239 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1240 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1241 { | |
|
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|
1242 SDL_Palette *pal; |
| 0 | 1243 int gotall; |
| 1244 int palsize; | |
| 1245 | |
| 34 | 1246 if ( ! current_video ) { |
| 1247 return 0; | |
| 1248 } | |
| 0 | 1249 if ( screen != SDL_PublicSurface ) { |
|
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|
1250 /* only screens have physical palettes */ |
|
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1251 which &= ~SDL_PHYSPAL; |
| 0 | 1252 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
|
662
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|
1253 /* hardware palettes required for split colormaps */ |
|
66c02f83f5bf
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656
diff
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|
1254 which |= SDL_PHYSPAL | SDL_LOGPAL; |
| 0 | 1255 } |
| 1256 | |
| 1257 /* Verify the parameters */ | |
| 1258 pal = screen->format->palette; | |
| 1259 if( !pal ) { | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
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|
1260 return 0; /* not a palettized surface */ |
| 0 | 1261 } |
| 1262 gotall = 1; | |
| 1263 palsize = 1 << screen->format->BitsPerPixel; | |
| 1264 if ( ncolors > (palsize - firstcolor) ) { | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
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|
1265 ncolors = (palsize - firstcolor); |
| 0 | 1266 gotall = 0; |
| 1267 } | |
| 1268 | |
| 1269 if ( which & SDL_LOGPAL ) { | |
| 1270 /* | |
| 1271 * Logical palette change: The actual screen isn't affected, | |
| 1272 * but the internal colormap is altered so that the | |
| 1273 * interpretation of the pixel values (for blits etc) is | |
| 1274 * changed. | |
| 1275 */ | |
|
662
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Sam Lantinga <slouken@libsdl.org>
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|
1276 SetPalette_logical(screen, colors, firstcolor, ncolors); |
| 0 | 1277 } |
| 1278 if ( which & SDL_PHYSPAL ) { | |
| 1279 SDL_VideoDevice *video = current_video; | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
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656
diff
changeset
|
1280 /* |
| 0 | 1281 * Physical palette change: This doesn't affect the |
| 1282 * program's idea of what the screen looks like, but changes | |
| 1283 * its actual appearance. | |
| 1284 */ | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1285 if(!video) |
|
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|
1286 return gotall; /* video not yet initialized */ |
| 0 | 1287 if(!video->physpal && !(which & SDL_LOGPAL) ) { |
| 1288 /* Lazy physical palette allocation */ | |
|
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656
diff
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|
1289 int size; |
|
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Sam Lantinga <slouken@libsdl.org>
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|
1290 SDL_Palette *pp = SDL_malloc(sizeof(*pp)); |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
916
diff
changeset
|
1291 if ( !pp ) { |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
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|
1292 return 0; |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1293 } |
| 0 | 1294 current_video->physpal = pp; |
| 1295 pp->ncolors = pal->ncolors; | |
| 1296 size = pp->ncolors * sizeof(SDL_Color); | |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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diff
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|
1297 pp->colors = SDL_malloc(size); |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
916
diff
changeset
|
1298 if ( !pp->colors ) { |
|
cdea7cbc3e23
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diff
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|
1299 return 0; |
|
cdea7cbc3e23
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Sam Lantinga <slouken@libsdl.org>
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|
1300 } |
|
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|
1301 SDL_memcpy(pp->colors, pal->colors, size); |
| 0 | 1302 } |
| 1303 if ( ! SetPalette_physical(screen, | |
| 1304 colors, firstcolor, ncolors) ) { | |
| 1305 gotall = 0; | |
| 1306 } | |
| 1307 } | |
| 1308 return gotall; | |
| 1309 } | |
| 1310 | |
| 1311 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1312 int ncolors) | |
| 1313 { | |
|
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parents:
656
diff
changeset
|
1314 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
| 0 | 1315 colors, firstcolor, ncolors); |
| 1316 } | |
| 1317 | |
| 1318 /* | |
| 1319 * Clean up the video subsystem | |
| 1320 */ | |
| 1321 void SDL_VideoQuit (void) | |
| 1322 { | |
| 1323 SDL_Surface *ready_to_go; | |
| 1324 | |
| 1325 if ( current_video ) { | |
| 1326 SDL_VideoDevice *video = current_video; | |
| 1327 SDL_VideoDevice *this = current_video; | |
| 1328 | |
| 1329 /* Halt event processing before doing anything else */ | |
| 1330 SDL_StopEventLoop(); | |
| 1331 | |
| 1332 /* Clean up allocated window manager items */ | |
| 1333 if ( SDL_PublicSurface ) { | |
| 1334 SDL_PublicSurface = NULL; | |
| 1335 } | |
| 1336 SDL_CursorQuit(); | |
| 1337 | |
| 1338 /* Just in case... */ | |
| 1339 SDL_WM_GrabInputOff(); | |
| 1340 | |
| 1341 /* Clean up the system video */ | |
| 1342 video->VideoQuit(this); | |
| 1343 | |
| 1344 /* Free any lingering surfaces */ | |
| 1345 ready_to_go = SDL_ShadowSurface; | |
| 1346 SDL_ShadowSurface = NULL; | |
| 1347 SDL_FreeSurface(ready_to_go); | |
| 1348 if ( SDL_VideoSurface != NULL ) { | |
| 1349 ready_to_go = SDL_VideoSurface; | |
| 1350 SDL_VideoSurface = NULL; | |
| 1351 SDL_FreeSurface(ready_to_go); | |
| 1352 } | |
| 1353 SDL_PublicSurface = NULL; | |
| 1354 | |
| 1355 /* Clean up miscellaneous memory */ | |
| 1356 if ( video->physpal ) { | |
|
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|
1357 SDL_free(video->physpal->colors); |
|
3692456e7b0f
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Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
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|
1358 SDL_free(video->physpal); |
| 0 | 1359 video->physpal = NULL; |
| 1360 } | |
| 1361 if ( video->gammacols ) { | |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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|
1362 SDL_free(video->gammacols); |
| 0 | 1363 video->gammacols = NULL; |
| 1364 } | |
| 1365 if ( video->gamma ) { | |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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1330
diff
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|
1366 SDL_free(video->gamma); |
| 0 | 1367 video->gamma = NULL; |
| 1368 } | |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
parents:
47
diff
changeset
|
1369 if ( video->wm_title != NULL ) { |
|
1336
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Use SDL_ prefixed versions of C library functions.
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diff
changeset
|
1370 SDL_free(video->wm_title); |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
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diff
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|
1371 video->wm_title = NULL; |
| 0 | 1372 } |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
parents:
47
diff
changeset
|
1373 if ( video->wm_icon != NULL ) { |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
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1330
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|
1374 SDL_free(video->wm_icon); |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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parents:
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diff
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|
1375 video->wm_icon = NULL; |
| 0 | 1376 } |
| 1377 | |
| 1378 /* Finish cleaning up video subsystem */ | |
| 1379 video->free(this); | |
| 1380 current_video = NULL; | |
| 1381 } | |
| 1382 return; | |
| 1383 } | |
| 1384 | |
| 1385 /* Load the GL driver library */ | |
| 1386 int SDL_GL_LoadLibrary(const char *path) | |
| 1387 { | |
| 1388 SDL_VideoDevice *video = current_video; | |
| 1389 SDL_VideoDevice *this = current_video; | |
| 1390 int retval; | |
| 1391 | |
| 1392 retval = -1; | |
|
423
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More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1393 if ( video == NULL ) { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1394 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1395 } else { |
|
423
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1396 if ( video->GL_LoadLibrary ) { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1397 retval = video->GL_LoadLibrary(this, path); |
|
d1565c52ded5
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|
1398 } else { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1399 SDL_SetError("No dynamic GL support in video driver"); |
|
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|
1400 } |
| 0 | 1401 } |
| 1402 return(retval); | |
| 1403 } | |
| 1404 | |
| 1405 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1406 { | |
| 1407 SDL_VideoDevice *video = current_video; | |
| 1408 SDL_VideoDevice *this = current_video; | |
| 1409 void *func; | |
| 1410 | |
| 1411 func = NULL; | |
| 1412 if ( video->GL_GetProcAddress ) { | |
| 1413 if ( video->gl_config.driver_loaded ) { | |
| 1414 func = video->GL_GetProcAddress(this, proc); | |
| 1415 } else { | |
| 1416 SDL_SetError("No GL driver has been loaded"); | |
| 1417 } | |
| 1418 } else { | |
| 1419 SDL_SetError("No dynamic GL support in video driver"); | |
| 1420 } | |
| 1421 return func; | |
| 1422 } | |
| 1423 | |
| 1424 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1425 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1426 { | |
| 1427 int retval; | |
| 1428 SDL_VideoDevice *video = current_video; | |
| 1429 | |
| 1430 retval = 0; | |
| 1431 switch (attr) { | |
| 1432 case SDL_GL_RED_SIZE: | |
| 1433 video->gl_config.red_size = value; | |
| 1434 break; | |
| 1435 case SDL_GL_GREEN_SIZE: | |
| 1436 video->gl_config.green_size = value; | |
| 1437 break; | |
| 1438 case SDL_GL_BLUE_SIZE: | |
| 1439 video->gl_config.blue_size = value; | |
| 1440 break; | |
| 1441 case SDL_GL_ALPHA_SIZE: | |
| 1442 video->gl_config.alpha_size = value; | |
| 1443 break; | |
| 1444 case SDL_GL_DOUBLEBUFFER: | |
| 1445 video->gl_config.double_buffer = value; | |
| 1446 break; | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1447 case SDL_GL_BUFFER_SIZE: |
|
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
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diff
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|
1448 video->gl_config.buffer_size = value; |
| 0 | 1449 break; |
| 1450 case SDL_GL_DEPTH_SIZE: | |
| 1451 video->gl_config.depth_size = value; | |
| 1452 break; | |
| 1453 case SDL_GL_STENCIL_SIZE: | |
| 1454 video->gl_config.stencil_size = value; | |
| 1455 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents:
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diff
changeset
|
1456 case SDL_GL_ACCUM_RED_SIZE: |
| 0 | 1457 video->gl_config.accum_red_size = value; |
| 1458 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
changeset
|
1459 case SDL_GL_ACCUM_GREEN_SIZE: |
| 0 | 1460 video->gl_config.accum_green_size = value; |
| 1461 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
changeset
|
1462 case SDL_GL_ACCUM_BLUE_SIZE: |
| 0 | 1463 video->gl_config.accum_blue_size = value; |
| 1464 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
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|
1465 case SDL_GL_ACCUM_ALPHA_SIZE: |
| 0 | 1466 video->gl_config.accum_alpha_size = value; |
| 1467 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
changeset
|
1468 case SDL_GL_STEREO: |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
changeset
|
1469 video->gl_config.stereo = value; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1470 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1471 case SDL_GL_MULTISAMPLEBUFFERS: |
|
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1472 video->gl_config.multisamplebuffers = value; |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff
changeset
|
1473 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1474 case SDL_GL_MULTISAMPLESAMPLES: |
|
864e2d2a9a55
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1475 video->gl_config.multisamplesamples = value; |
|
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Date: Thu, 24 Apr 2003 15:13:47 -0400
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1476 break; |
| 0 | 1477 default: |
| 1478 SDL_SetError("Unknown OpenGL attribute"); | |
| 1479 retval = -1; | |
| 1480 break; | |
| 1481 } | |
| 1482 return(retval); | |
| 1483 } | |
| 1484 | |
| 1485 /* Retrieve an attribute value from the windowing system. */ | |
| 1486 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1487 { | |
| 1488 int retval = -1; | |
| 1489 SDL_VideoDevice* video = current_video; | |
| 1490 SDL_VideoDevice* this = current_video; | |
| 1491 | |
| 1492 if ( video->GL_GetAttribute ) { | |
| 1493 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1494 } else { |
|
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1495 *value = 0; |
|
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1496 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1497 } |
| 1498 return retval; | |
| 1499 } | |
| 1500 | |
| 1501 /* Perform a GL buffer swap on the current GL context */ | |
| 1502 void SDL_GL_SwapBuffers(void) | |
| 1503 { | |
| 1504 SDL_VideoDevice *video = current_video; | |
| 1505 SDL_VideoDevice *this = current_video; | |
| 1506 | |
| 1507 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1508 video->GL_SwapBuffers(this); |
|
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1509 } else { |
|
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1510 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1511 } |
| 1512 } | |
| 1513 | |
| 1514 /* Update rects with locking */ | |
| 1515 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1516 { | |
| 1517 SDL_GL_Lock(); | |
| 1518 SDL_GL_UpdateRects(numrects, rects); | |
| 1519 SDL_GL_Unlock(); | |
| 1520 } | |
| 1521 | |
| 1522 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1523 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1524 { | |
|
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|
1525 #if SDL_VIDEO_OPENGL |
| 0 | 1526 SDL_VideoDevice *this = current_video; |
| 1527 SDL_Rect update, tmp; | |
| 1528 int x, y, i; | |
| 1529 | |
| 1530 for ( i = 0; i < numrects; i++ ) | |
| 1531 { | |
| 1532 tmp.y = rects[i].y; | |
| 1533 tmp.h = rects[i].h; | |
| 1534 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1535 { | |
| 1536 tmp.x = rects[i].x; | |
| 1537 tmp.w = rects[i].w; | |
| 1538 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1539 { | |
| 1540 update.x = tmp.x; | |
| 1541 update.y = tmp.y; | |
| 1542 update.w = tmp.w; | |
| 1543 update.h = tmp.h; | |
| 1544 | |
| 1545 if ( update.w > 256 ) | |
| 1546 update.w = 256; | |
| 1547 | |
| 1548 if ( update.h > 256 ) | |
| 1549 update.h = 256; | |
| 1550 | |
| 1551 this->glFlush(); | |
| 1552 this->glTexSubImage2D( | |
| 1553 GL_TEXTURE_2D, | |
| 1554 0, | |
| 1555 0, | |
| 1556 0, | |
| 1557 update.w, | |
| 1558 update.h, | |
| 1559 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1560 #ifdef GL_VERSION_1_2 | |
| 1561 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1562 #else | |
| 1563 GL_UNSIGNED_BYTE, | |
| 1564 #endif | |
| 1565 (Uint8 *)this->screen->pixels + | |
| 1566 this->screen->format->BytesPerPixel * update.x + | |
| 1567 update.y * this->screen->pitch ); | |
| 1568 | |
| 1569 this->glFlush(); | |
| 1570 /* | |
| 1571 * Note the parens around the function name: | |
| 1572 * This is because some OpenGL implementations define glTexCoord etc | |
| 1573 * as macros, and we don't want them expanded here. | |
| 1574 */ | |
| 1575 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1576 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1577 (this->glVertex2i)( update.x, update.y ); | |
| 1578 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1579 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1580 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1581 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1582 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1583 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1584 this->glEnd(); | |
| 1585 | |
| 1586 tmp.x += 256; | |
| 1587 tmp.w -= 256; | |
| 1588 } | |
| 1589 tmp.y += 256; | |
| 1590 tmp.h -= 256; | |
| 1591 } | |
| 1592 } | |
| 1593 #endif | |
| 1594 } | |
| 1595 | |
| 1596 /* Lock == save current state */ | |
| 1597 void SDL_GL_Lock() | |
| 1598 { | |
|
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1599 #if SDL_VIDEO_OPENGL |
| 0 | 1600 lock_count--; |
| 1601 if (lock_count==-1) | |
| 1602 { | |
| 1603 SDL_VideoDevice *this = current_video; | |
| 1604 | |
| 1605 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1606 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1607 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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|
1608 #endif |
| 0 | 1609 |
| 1610 this->glEnable(GL_TEXTURE_2D); | |
| 1611 this->glEnable(GL_BLEND); | |
| 1612 this->glDisable(GL_FOG); | |
| 1613 this->glDisable(GL_ALPHA_TEST); | |
| 1614 this->glDisable(GL_DEPTH_TEST); | |
| 1615 this->glDisable(GL_SCISSOR_TEST); | |
| 1616 this->glDisable(GL_STENCIL_TEST); | |
| 1617 this->glDisable(GL_CULL_FACE); | |
| 1618 | |
| 1619 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1620 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1621 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1622 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1623 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1624 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1625 | |
| 1626 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1627 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1628 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1629 | |
| 1630 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1631 this->glMatrixMode(GL_PROJECTION); | |
| 1632 this->glPushMatrix(); | |
| 1633 this->glLoadIdentity(); | |
| 1634 | |
| 1635 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1636 | |
| 1637 this->glMatrixMode(GL_MODELVIEW); | |
| 1638 this->glPushMatrix(); | |
| 1639 this->glLoadIdentity(); | |
| 1640 } | |
| 1641 #endif | |
| 1642 } | |
| 1643 | |
| 1644 /* Unlock == restore saved state */ | |
| 1645 void SDL_GL_Unlock() | |
| 1646 { | |
|
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|
1647 #if SDL_VIDEO_OPENGL |
| 0 | 1648 lock_count++; |
| 1649 if (lock_count==0) | |
| 1650 { | |
| 1651 SDL_VideoDevice *this = current_video; | |
| 1652 | |
| 1653 this->glPopMatrix(); | |
| 1654 this->glMatrixMode(GL_PROJECTION); | |
| 1655 this->glPopMatrix(); | |
| 1656 | |
| 1657 this->glPopClientAttrib(); | |
| 1658 this->glPopAttrib(); | |
| 1659 } | |
| 1660 #endif | |
| 1661 } | |
| 1662 | |
| 1663 /* | |
| 1664 * Sets/Gets the title and icon text of the display window, if any. | |
| 1665 */ | |
| 1666 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1667 { | |
| 1668 SDL_VideoDevice *video = current_video; | |
| 1669 SDL_VideoDevice *this = current_video; | |
| 1670 | |
|
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|
1671 if ( video ) { |
|
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|
1672 if ( title ) { |
|
bd6b0a910a65
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|
1673 if ( video->wm_title ) { |
|
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|
1674 SDL_free(video->wm_title); |
|
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|
1675 } |
|
1379
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|
1676 video->wm_title = SDL_strdup(title); |
| 0 | 1677 } |
|
58
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|
1678 if ( icon ) { |
|
bd6b0a910a65
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|
1679 if ( video->wm_icon ) { |
|
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|
1680 SDL_free(video->wm_icon); |
|
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|
1681 } |
|
1379
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|
1682 video->wm_icon = SDL_strdup(icon); |
| 0 | 1683 } |
|
58
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|
1684 if ( (title || icon) && (video->SetCaption != NULL) ) { |
|
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|
1685 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1686 } |
| 1687 } | |
| 1688 } | |
| 1689 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1690 { | |
|
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|
1691 SDL_VideoDevice *video = current_video; |
|
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|
1692 |
|
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|
1693 if ( video ) { |
|
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|
1694 if ( title ) { |
|
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diff
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|
1695 *title = video->wm_title; |
|
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|
1696 } |
|
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diff
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|
1697 if ( icon ) { |
|
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diff
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|
1698 *icon = video->wm_icon; |
|
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|
1699 } |
| 0 | 1700 } |
| 1701 } | |
| 1702 | |
|
541
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|
1703 /* Utility function used by SDL_WM_SetIcon(); |
|
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1704 * flags & 1 for color key, flags & 2 for alpha channel. */ |
|
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|
1705 static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 0 | 1706 { |
| 1707 int x, y; | |
| 1708 Uint32 colorkey; | |
| 1709 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1710 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1711 | |
| 1712 colorkey = icon->format->colorkey; | |
| 1713 switch (icon->format->BytesPerPixel) { | |
| 1714 case 1: { Uint8 *pixels; | |
| 1715 for ( y=0; y<icon->h; ++y ) { | |
| 1716 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1717 for ( x=0; x<icon->w; ++x ) { | |
| 1718 if ( *pixels++ == colorkey ) { | |
| 1719 SET_MASKBIT(icon, x, y, mask); | |
| 1720 } | |
| 1721 } | |
| 1722 } | |
| 1723 } | |
| 1724 break; | |
| 1725 | |
| 1726 case 2: { Uint16 *pixels; | |
| 1727 for ( y=0; y<icon->h; ++y ) { | |
| 1728 pixels = (Uint16 *)icon->pixels + | |
| 1729 y*icon->pitch/2; | |
| 1730 for ( x=0; x<icon->w; ++x ) { | |
|
541
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|
1731 if ( (flags & 1) && *pixels == colorkey ) { |
|
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|
1732 SET_MASKBIT(icon, x, y, mask); |
|
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|
1733 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1734 SET_MASKBIT(icon, x, y, mask); |
| 1735 } | |
|
541
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|
1736 pixels++; |
| 0 | 1737 } |
| 1738 } | |
| 1739 } | |
| 1740 break; | |
| 1741 | |
| 1742 case 4: { Uint32 *pixels; | |
| 1743 for ( y=0; y<icon->h; ++y ) { | |
| 1744 pixels = (Uint32 *)icon->pixels + | |
| 1745 y*icon->pitch/4; | |
| 1746 for ( x=0; x<icon->w; ++x ) { | |
|
541
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|
1747 if ( (flags & 1) && *pixels == colorkey ) { |
|
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|
1748 SET_MASKBIT(icon, x, y, mask); |
|
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|
1749 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1750 SET_MASKBIT(icon, x, y, mask); |
| 1751 } | |
|
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|
1752 pixels++; |
| 0 | 1753 } |
| 1754 } | |
| 1755 } | |
| 1756 break; | |
| 1757 } | |
| 1758 } | |
| 1759 | |
| 1760 /* | |
| 1761 * Sets the window manager icon for the display window. | |
| 1762 */ | |
| 1763 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1764 { | |
| 1765 SDL_VideoDevice *video = current_video; | |
| 1766 SDL_VideoDevice *this = current_video; | |
| 1767 | |
| 1768 if ( icon && video->SetIcon ) { | |
| 1769 /* Generate a mask if necessary, and create the icon! */ | |
| 1770 if ( mask == NULL ) { | |
| 1771 int mask_len = icon->h*(icon->w+7)/8; | |
|
541
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|
1772 int flags = 0; |
|
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|
1773 mask = (Uint8 *)SDL_malloc(mask_len); |
| 0 | 1774 if ( mask == NULL ) { |
| 1775 return; | |
| 1776 } | |
|
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|
1777 SDL_memset(mask, ~0, mask_len); |
|
541
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|
1778 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
|
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|
1779 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
|
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|
1780 if( flags ) { |
|
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|
1781 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 0 | 1782 } |
| 1783 video->SetIcon(video, icon, mask); | |
|
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|
1784 SDL_free(mask); |
| 0 | 1785 } else { |
| 1786 video->SetIcon(this, icon, mask); | |
| 1787 } | |
| 1788 } | |
| 1789 } | |
| 1790 | |
| 1791 /* | |
| 1792 * Grab or ungrab the keyboard and mouse input. | |
| 1793 * This function returns the final grab mode after calling the | |
| 1794 * driver dependent function. | |
| 1795 */ | |
| 1796 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1797 { | |
| 1798 SDL_VideoDevice *video = current_video; | |
| 1799 SDL_VideoDevice *this = current_video; | |
| 1800 | |
| 1801 /* Only do something if we have support for grabs */ | |
| 1802 if ( video->GrabInput == NULL ) { | |
| 1803 return(video->input_grab); | |
| 1804 } | |
| 1805 | |
| 1806 /* If the final grab mode if off, only then do we actually grab */ | |
| 1807 #ifdef DEBUG_GRAB | |
| 1808 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1809 #endif | |
| 1810 if ( mode == SDL_GRAB_OFF ) { | |
| 1811 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1812 mode = video->GrabInput(this, mode); | |
| 1813 } | |
| 1814 } else { | |
| 1815 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1816 mode = video->GrabInput(this, mode); | |
| 1817 } | |
| 1818 } | |
| 1819 if ( mode != video->input_grab ) { | |
| 1820 video->input_grab = mode; | |
| 1821 if ( video->CheckMouseMode ) { | |
| 1822 video->CheckMouseMode(this); | |
| 1823 } | |
| 1824 } | |
| 1825 #ifdef DEBUG_GRAB | |
| 1826 printf("Final mode %d\n", video->input_grab); | |
| 1827 #endif | |
| 1828 | |
| 1829 /* Return the final grab state */ | |
| 1830 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1831 mode -= SDL_GRAB_FULLSCREEN; | |
| 1832 } | |
| 1833 return(mode); | |
| 1834 } | |
| 1835 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1836 { | |
| 1837 SDL_VideoDevice *video = current_video; | |
| 1838 | |
|
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1839 /* If the video isn't initialized yet, we can't do anything */ |
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1840 if ( ! video ) { |
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1841 return SDL_GRAB_OFF; |
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parents:
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1842 } |
| 0 | 1843 |
| 1844 /* Return the current mode on query */ | |
| 1845 if ( mode == SDL_GRAB_QUERY ) { | |
| 1846 mode = video->input_grab; | |
| 1847 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1848 mode -= SDL_GRAB_FULLSCREEN; | |
| 1849 } | |
| 1850 return(mode); | |
| 1851 } | |
| 1852 | |
| 1853 #ifdef DEBUG_GRAB | |
| 1854 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1855 #endif | |
| 1856 /* If the video surface is fullscreen, we always grab */ | |
| 1857 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1858 mode -= SDL_GRAB_FULLSCREEN; | |
| 1859 } | |
| 1860 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1861 mode += SDL_GRAB_FULLSCREEN; | |
| 1862 } | |
| 1863 return(SDL_WM_GrabInputRaw(mode)); | |
| 1864 } | |
| 1865 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1866 { | |
| 1867 SDL_GrabMode mode; | |
| 1868 | |
| 1869 /* First query the current grab state */ | |
| 1870 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1871 | |
| 1872 /* Now explicitly turn off input grab */ | |
| 1873 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1874 | |
| 1875 /* Return the old state */ | |
| 1876 return(mode); | |
| 1877 } | |
| 1878 | |
| 1879 /* | |
| 1880 * Iconify the window in window managed environments. | |
| 1881 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1882 */ | |
| 1883 int SDL_WM_IconifyWindow(void) | |
| 1884 { | |
| 1885 SDL_VideoDevice *video = current_video; | |
| 1886 SDL_VideoDevice *this = current_video; | |
| 1887 int retval; | |
| 1888 | |
| 1889 retval = 0; | |
| 1890 if ( video->IconifyWindow ) { | |
| 1891 retval = video->IconifyWindow(this); | |
| 1892 } | |
| 1893 return(retval); | |
| 1894 } | |
| 1895 | |
| 1896 /* | |
| 1897 * Toggle fullscreen mode | |
| 1898 */ | |
| 1899 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1900 { | |
| 1901 SDL_VideoDevice *video = current_video; | |
| 1902 SDL_VideoDevice *this = current_video; | |
| 1903 int toggled; | |
| 1904 | |
| 1905 toggled = 0; | |
| 1906 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1907 video->ToggleFullScreen ) { | |
| 1908 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1909 toggled = video->ToggleFullScreen(this, 0); | |
| 1910 if ( toggled ) { | |
| 1911 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1912 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1913 } | |
| 1914 } else { | |
| 1915 toggled = video->ToggleFullScreen(this, 1); | |
| 1916 if ( toggled ) { | |
| 1917 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1918 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1919 } | |
| 1920 } | |
| 1921 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1922 if ( toggled ) { | |
| 1923 SDL_WM_GrabInput(video->input_grab); | |
| 1924 } | |
| 1925 } | |
| 1926 return(toggled); | |
| 1927 } | |
| 1928 | |
| 1929 /* | |
| 1930 * Get some platform dependent window manager information | |
| 1931 */ | |
| 1932 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1933 { | |
| 1934 SDL_VideoDevice *video = current_video; | |
| 1935 SDL_VideoDevice *this = current_video; | |
| 1936 | |
| 1937 if ( video && video->GetWMInfo ) { | |
| 1938 return(video->GetWMInfo(this, info)); | |
| 1939 } else { | |
| 1940 return(0); | |
| 1941 } | |
| 1942 } |