| 1 | /* |
| 2 | * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) |
| 3 | * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice including the dates of first publication and |
| 13 | * either this permission notice or a reference to |
| 14 | * http://oss.sgi.com/projects/FreeB/ |
| 15 | * shall be included in all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 21 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| 22 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 23 | * SOFTWARE. |
| 24 | * |
| 25 | * Except as contained in this notice, the name of Silicon Graphics, Inc. |
| 26 | * shall not be used in advertising or otherwise to promote the sale, use or |
| 27 | * other dealings in this Software without prior written authorization from |
| 28 | * Silicon Graphics, Inc. |
| 29 | */ |
| 30 | |
| 31 | #ifdef HAVE_DMX_CONFIG_H |
| 32 | #include <dmx-config.h> |
| 33 | #endif |
| 34 | |
| 35 | #include "dmx.h" |
| 36 | #include "dmxlog.h" |
| 37 | |
| 38 | #include "glxserver.h" |
| 39 | |
| 40 | #include <windowstr.h> |
| 41 | |
| 42 | #include "glxfbconfig.h" |
| 43 | |
| 44 | #ifdef PANORAMIX |
| 45 | #include "panoramiXsrv.h" |
| 46 | #endif |
| 47 | |
| 48 | __GLXscreenInfo *__glXActiveScreens; |
| 49 | GLint __glXNumActiveScreens; |
| 50 | |
| 51 | __GLXFBConfig **__glXFBConfigs; |
| 52 | int __glXNumFBConfigs; |
| 53 | |
| 54 | static char GLXServerVendorName[] = "SGI DMX/glxProxy"; |
| 55 | static char GLXServerVersion[64]; |
| 56 | static char GLXServerExtensions[] = |
| 57 | "GLX_EXT_visual_info " |
| 58 | "GLX_EXT_visual_rating " |
| 59 | "GLX_EXT_import_context " |
| 60 | "GLX_SGIX_fbconfig " "GLX_SGI_make_current_read " "GLX_SGI_swap_control "; |
| 61 | |
| 62 | static char ExtensionsString[1024]; |
| 63 | |
| 64 | static void |
| 65 | CalcServerVersionAndExtensions(void) |
| 66 | { |
| 67 | int s; |
| 68 | xGLXQueryVersionReq *req; |
| 69 | xGLXQueryVersionReply reply; |
| 70 | char **be_extensions; |
| 71 | char *ext; |
| 72 | char *denied_extensions; |
| 73 | |
| 74 | /* |
| 75 | * set the server glx version to be the minimum version |
| 76 | * supported by all back-end servers |
| 77 | */ |
| 78 | __glXVersionMajor = 0; |
| 79 | __glXVersionMinor = 0; |
| 80 | for (s = 0; s < __glXNumActiveScreens; s++) { |
| 81 | DMXScreenInfo *dmxScreen = &dmxScreens[s]; |
| 82 | Display *dpy = dmxScreen->beDisplay; |
| 83 | |
| 84 | /* Send the glXQueryVersion request */ |
| 85 | LockDisplay(dpy); |
| 86 | GetReq(GLXQueryVersion, req); |
| 87 | req->reqType = dmxScreen->glxMajorOpcode; |
| 88 | req->glxCode = X_GLXQueryVersion; |
| 89 | req->majorVersion = GLX_SERVER_MAJOR_VERSION; |
| 90 | req->minorVersion = GLX_SERVER_MINOR_VERSION; |
| 91 | _XReply(dpy, (xReply *) &reply, 0, False); |
| 92 | UnlockDisplay(dpy); |
| 93 | SyncHandle(); |
| 94 | |
| 95 | if (s == 0) { |
| 96 | __glXVersionMajor = reply.majorVersion; |
| 97 | __glXVersionMinor = reply.minorVersion; |
| 98 | } |
| 99 | else { |
| 100 | if (reply.majorVersion < __glXVersionMajor) { |
| 101 | __glXVersionMajor = reply.majorVersion; |
| 102 | __glXVersionMinor = reply.minorVersion; |
| 103 | } |
| 104 | else if ((reply.majorVersion == __glXVersionMajor) && |
| 105 | (reply.minorVersion < __glXVersionMinor)) { |
| 106 | __glXVersionMinor = reply.minorVersion; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | } |
| 111 | |
| 112 | if (GLX_SERVER_MAJOR_VERSION < __glXVersionMajor) { |
| 113 | __glXVersionMajor = GLX_SERVER_MAJOR_VERSION; |
| 114 | __glXVersionMinor = GLX_SERVER_MINOR_VERSION; |
| 115 | } |
| 116 | else if ((GLX_SERVER_MAJOR_VERSION == __glXVersionMajor) && |
| 117 | (GLX_SERVER_MINOR_VERSION < __glXVersionMinor)) { |
| 118 | __glXVersionMinor = GLX_SERVER_MINOR_VERSION; |
| 119 | } |
| 120 | |
| 121 | snprintf(GLXServerVersion, sizeof(GLXServerVersion), |
| 122 | "%d.%d DMX %d back-end server(s)", |
| 123 | __glXVersionMajor, __glXVersionMinor, __glXNumActiveScreens); |
| 124 | /* |
| 125 | * set the ExtensionsString to the minimum extensions string |
| 126 | */ |
| 127 | ExtensionsString[0] = '\0'; |
| 128 | |
| 129 | /* |
| 130 | * read extensions strings of all back-end servers |
| 131 | */ |
| 132 | be_extensions = (char **) malloc(__glXNumActiveScreens * sizeof(char *)); |
| 133 | if (!be_extensions) |
| 134 | return; |
| 135 | |
| 136 | for (s = 0; s < __glXNumActiveScreens; s++) { |
| 137 | DMXScreenInfo *dmxScreen = &dmxScreens[s]; |
| 138 | Display *dpy = dmxScreen->beDisplay; |
| 139 | xGLXQueryServerStringReq *req; |
| 140 | xGLXQueryServerStringReply reply; |
| 141 | int length, numbytes; |
| 142 | |
| 143 | /* Send the glXQueryServerString request */ |
| 144 | LockDisplay(dpy); |
| 145 | GetReq(GLXQueryServerString, req); |
| 146 | req->reqType = dmxScreen->glxMajorOpcode; |
| 147 | req->glxCode = X_GLXQueryServerString; |
| 148 | req->screen = DefaultScreen(dpy); |
| 149 | req->name = GLX_EXTENSIONS; |
| 150 | _XReply(dpy, (xReply *) &reply, 0, False); |
| 151 | |
| 152 | length = (int) reply.length; |
| 153 | numbytes = (int) reply.n; |
| 154 | be_extensions[s] = (char *) malloc(numbytes); |
| 155 | if (!be_extensions[s]) { |
| 156 | /* Throw data on the floor */ |
| 157 | _XEatDataWords(dpy, length); |
| 158 | } |
| 159 | else { |
| 160 | _XReadPad(dpy, (char *) be_extensions[s], numbytes); |
| 161 | } |
| 162 | UnlockDisplay(dpy); |
| 163 | SyncHandle(); |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | * extensions string will include only extensions that our |
| 168 | * server supports as well as all back-end servers supports. |
| 169 | * extensions that are in the DMX_DENY_EXTENSIONS string will |
| 170 | * not be supported. |
| 171 | */ |
| 172 | denied_extensions = getenv("DMX_DENY_GLX_EXTENSIONS"); |
| 173 | ext = strtok(GLXServerExtensions, " "); |
| 174 | while (ext) { |
| 175 | int supported = 1; |
| 176 | |
| 177 | if (denied_extensions && strstr(denied_extensions, ext)) { |
| 178 | supported = 0; |
| 179 | } |
| 180 | else { |
| 181 | for (s = 0; s < __glXNumActiveScreens && supported; s++) { |
| 182 | if (!strstr(be_extensions[s], ext)) { |
| 183 | supported = 0; |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | if (supported) { |
| 189 | strcat(ExtensionsString, ext); |
| 190 | strcat(ExtensionsString, " "); |
| 191 | } |
| 192 | |
| 193 | ext = strtok(NULL, " "); |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * release temporary storage |
| 198 | */ |
| 199 | for (s = 0; s < __glXNumActiveScreens; s++) { |
| 200 | free(be_extensions[s]); |
| 201 | } |
| 202 | free(be_extensions); |
| 203 | |
| 204 | if (dmxGLXSwapGroupSupport) { |
| 205 | if (!denied_extensions || |
| 206 | !strstr(denied_extensions, "GLX_SGIX_swap_group")) { |
| 207 | strcat(ExtensionsString, "GLX_SGIX_swap_group"); |
| 208 | if (!denied_extensions || |
| 209 | !strstr(denied_extensions, "GLX_SGIX_swap_barrier")) { |
| 210 | strcat(ExtensionsString, " GLX_SGIX_swap_barrier"); |
| 211 | } |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | } |
| 216 | |
| 217 | void |
| 218 | __glXScreenInit(GLint numscreens) |
| 219 | { |
| 220 | int s; |
| 221 | int c; |
| 222 | DMXScreenInfo *dmxScreen0 = &dmxScreens[0]; |
| 223 | |
| 224 | __glXNumActiveScreens = numscreens; |
| 225 | |
| 226 | CalcServerVersionAndExtensions(); |
| 227 | |
| 228 | __glXFBConfigs = NULL; |
| 229 | __glXNumFBConfigs = 0; |
| 230 | |
| 231 | if ((__glXVersionMajor == 1 && __glXVersionMinor >= 3) || |
| 232 | (__glXVersionMajor > 1) || |
| 233 | (strstr(ExtensionsString, "GLX_SGIX_fbconfig"))) { |
| 234 | |
| 235 | /* |
| 236 | // Initialize FBConfig info. |
| 237 | // find the set of FBConfigs that are present on all back-end |
| 238 | // servers - only those configs will be supported |
| 239 | */ |
| 240 | __glXFBConfigs = (__GLXFBConfig **) malloc(dmxScreen0->numFBConfigs * |
| 241 | (numscreens + |
| 242 | 1) * |
| 243 | sizeof(__GLXFBConfig *)); |
| 244 | __glXNumFBConfigs = 0; |
| 245 | |
| 246 | for (c = 0; c < dmxScreen0->numFBConfigs; c++) { |
| 247 | __GLXFBConfig *cfg = NULL; |
| 248 | |
| 249 | if (numscreens > 1) { |
| 250 | for (s = 1; s < numscreens; s++) { |
| 251 | DMXScreenInfo *dmxScreen = &dmxScreens[s]; |
| 252 | |
| 253 | cfg = FindMatchingFBConfig(&dmxScreen0->fbconfigs[c], |
| 254 | dmxScreen->fbconfigs, |
| 255 | dmxScreen->numFBConfigs); |
| 256 | __glXFBConfigs[__glXNumFBConfigs * (numscreens + 1) + s + |
| 257 | 1] = cfg; |
| 258 | if (!cfg) { |
| 259 | dmxLog(dmxInfo, |
| 260 | "screen0 FBConfig 0x%x is missing on screen#%d\n", |
| 261 | dmxScreen0->fbconfigs[c].id, s); |
| 262 | break; |
| 263 | } |
| 264 | else { |
| 265 | dmxLog(dmxInfo, |
| 266 | "screen0 FBConfig 0x%x matched to 0x%x on screen#%d\n", |
| 267 | dmxScreen0->fbconfigs[c].id, cfg->id, s); |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | else { |
| 272 | cfg = &dmxScreen0->fbconfigs[c]; |
| 273 | } |
| 274 | |
| 275 | if (cfg) { |
| 276 | |
| 277 | /* filter out overlay visuals */ |
| 278 | if (cfg->level == 0) { |
| 279 | __GLXFBConfig *proxy_cfg; |
| 280 | |
| 281 | __glXFBConfigs[__glXNumFBConfigs * (numscreens + 1) + 1] = |
| 282 | &dmxScreen0->fbconfigs[c]; |
| 283 | |
| 284 | proxy_cfg = malloc(sizeof(__GLXFBConfig)); |
| 285 | memcpy(proxy_cfg, cfg, sizeof(__GLXFBConfig)); |
| 286 | proxy_cfg->id = FakeClientID(0); |
| 287 | /* visual will be associated later in __glXGetFBConfigs */ |
| 288 | proxy_cfg->associatedVisualId = (unsigned int) -1; |
| 289 | |
| 290 | __glXFBConfigs[__glXNumFBConfigs * (numscreens + 1) + 0] = |
| 291 | proxy_cfg; |
| 292 | |
| 293 | __glXNumFBConfigs++; |
| 294 | } |
| 295 | |
| 296 | } |
| 297 | |
| 298 | } |
| 299 | |
| 300 | } |
| 301 | |
| 302 | } |
| 303 | |
| 304 | void |
| 305 | __glXScreenReset(void) |
| 306 | { |
| 307 | __glXNumActiveScreens = 0; |
| 308 | } |
| 309 | |
| 310 | char * |
| 311 | __glXGetServerString(unsigned int name) |
| 312 | { |
| 313 | char *ret = NULL; |
| 314 | |
| 315 | switch (name) { |
| 316 | |
| 317 | case GLX_VENDOR: |
| 318 | ret = GLXServerVendorName; |
| 319 | break; |
| 320 | |
| 321 | case GLX_VERSION: |
| 322 | ret = GLXServerVersion; |
| 323 | break; |
| 324 | |
| 325 | case GLX_EXTENSIONS: |
| 326 | ret = ExtensionsString; |
| 327 | break; |
| 328 | |
| 329 | default: |
| 330 | break; |
| 331 | } |
| 332 | |
| 333 | return ret; |
| 334 | |
| 335 | } |
| 336 | |
| 337 | int |
| 338 | glxIsExtensionSupported(char *ext) |
| 339 | { |
| 340 | return (strstr(ExtensionsString, ext) != NULL); |
| 341 | } |