| 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 | |
| 37 | #include "glxserver.h" |
| 38 | #include <windowstr.h> |
| 39 | #include <propertyst.h> |
| 40 | #include <os.h> |
| 41 | #include "g_disptab.h" |
| 42 | #include "glxutil.h" |
| 43 | #include "glxext.h" |
| 44 | #include "glxvisuals.h" |
| 45 | #include "micmap.h" |
| 46 | #include "glxswap.h" |
| 47 | #include "extinit.h" |
| 48 | #include "glx_extinit.h" |
| 49 | |
| 50 | /* |
| 51 | ** Forward declarations. |
| 52 | */ |
| 53 | static int __glXSwapDispatch(ClientPtr); |
| 54 | static int __glXDispatch(ClientPtr); |
| 55 | |
| 56 | /* |
| 57 | ** Called when the extension is reset. |
| 58 | */ |
| 59 | static void |
| 60 | ResetExtension(ExtensionEntry * extEntry) |
| 61 | { |
| 62 | __glXFlushContextCache(); |
| 63 | __glXScreenReset(); |
| 64 | SwapBarrierReset(); |
| 65 | } |
| 66 | |
| 67 | /* |
| 68 | ** Initialize the per-client context storage. |
| 69 | */ |
| 70 | static void |
| 71 | ResetClientState(int clientIndex) |
| 72 | { |
| 73 | __GLXclientState *cl = __glXClients[clientIndex]; |
| 74 | Display **keep_be_displays; |
| 75 | int i; |
| 76 | |
| 77 | free(cl->returnBuf); |
| 78 | free(cl->currentContexts); |
| 79 | free(cl->currentDrawables); |
| 80 | free(cl->largeCmdBuf); |
| 81 | |
| 82 | for (i = 0; i < screenInfo.numScreens; i++) { |
| 83 | if (cl->be_displays[i]) |
| 84 | XCloseDisplay(cl->be_displays[i]); |
| 85 | } |
| 86 | |
| 87 | keep_be_displays = cl->be_displays; |
| 88 | memset(cl, 0, sizeof(__GLXclientState)); |
| 89 | cl->be_displays = keep_be_displays; |
| 90 | |
| 91 | free(cl->GLClientextensions); |
| 92 | |
| 93 | memset(cl->be_displays, 0, screenInfo.numScreens * sizeof(Display *)); |
| 94 | } |
| 95 | |
| 96 | /* |
| 97 | ** This procedure is called when the client who created the context goes |
| 98 | ** away OR when glXDestroyContext is called. In either case, all we do is |
| 99 | ** flag that the ID is no longer valid, and (maybe) free the context. |
| 100 | ** use. |
| 101 | */ |
| 102 | static int |
| 103 | ContextGone(__GLXcontext * cx, XID id) |
| 104 | { |
| 105 | cx->idExists = GL_FALSE; |
| 106 | if (!cx->isCurrent) { |
| 107 | __glXFreeContext(cx); |
| 108 | } |
| 109 | |
| 110 | return True; |
| 111 | } |
| 112 | |
| 113 | /* |
| 114 | ** Free a client's state. |
| 115 | */ |
| 116 | static int |
| 117 | ClientGone(int clientIndex, XID id) |
| 118 | { |
| 119 | __GLXcontext *cx; |
| 120 | __GLXclientState *cl = __glXClients[clientIndex]; |
| 121 | int i; |
| 122 | |
| 123 | if (cl) { |
| 124 | /* |
| 125 | ** Free all the contexts that are current for this client. |
| 126 | */ |
| 127 | for (i = 0; i < cl->numCurrentContexts; i++) { |
| 128 | cx = cl->currentContexts[i]; |
| 129 | if (cx) { |
| 130 | cx->isCurrent = GL_FALSE; |
| 131 | if (!cx->idExists) { |
| 132 | __glXFreeContext(cx); |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | /* |
| 137 | ** Re-initialize the client state structure. Don't free it because |
| 138 | ** we'll probably get another client with this index and use the struct |
| 139 | ** again. There is a maximum of MAXCLIENTS of these structures. |
| 140 | */ |
| 141 | ResetClientState(clientIndex); |
| 142 | } |
| 143 | |
| 144 | return True; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | ** Free a GLX Pixmap. |
| 149 | */ |
| 150 | void |
| 151 | __glXFreeGLXPixmap(__GLXpixmap * pGlxPixmap) |
| 152 | { |
| 153 | if (!pGlxPixmap->idExists && !pGlxPixmap->refcnt) { |
| 154 | |
| 155 | PixmapPtr pPixmap = (PixmapPtr) pGlxPixmap->pDraw; |
| 156 | |
| 157 | /* |
| 158 | ** The DestroyPixmap routine should decrement the refcount and free |
| 159 | ** only if it's zero. |
| 160 | */ |
| 161 | (*pGlxPixmap->pScreen->DestroyPixmap) (pPixmap); |
| 162 | free(pGlxPixmap->be_xids); |
| 163 | free(pGlxPixmap); |
| 164 | } |
| 165 | |
| 166 | } |
| 167 | |
| 168 | static int |
| 169 | PixmapGone(__GLXpixmap * pGlxPixmap, XID id) |
| 170 | { |
| 171 | |
| 172 | pGlxPixmap->idExists = False; |
| 173 | __glXFreeGLXPixmap(pGlxPixmap); |
| 174 | |
| 175 | return True; |
| 176 | } |
| 177 | |
| 178 | void |
| 179 | __glXFreeGLXWindow(__glXWindow * pGlxWindow) |
| 180 | { |
| 181 | if (!pGlxWindow->idExists && !pGlxWindow->refcnt) { |
| 182 | WindowPtr pWindow = (WindowPtr) pGlxWindow->pDraw; |
| 183 | WindowPtr ret; |
| 184 | |
| 185 | dixLookupResourceByType((pointer) &ret, |
| 186 | pWindow->drawable.id, RT_WINDOW, |
| 187 | NullClient, DixUnknownAccess); |
| 188 | if (ret == pWindow) { |
| 189 | (*pGlxWindow->pScreen->DestroyWindow) (pWindow); |
| 190 | } |
| 191 | |
| 192 | free(pGlxWindow); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | static void |
| 197 | WindowGone(__glXWindow * pGlxWindow, XID id) |
| 198 | { |
| 199 | pGlxWindow->idExists = False; |
| 200 | __glXFreeGLXWindow(pGlxWindow); |
| 201 | } |
| 202 | |
| 203 | void |
| 204 | __glXFreeGLXPbuffer(__glXPbuffer * pGlxPbuffer) |
| 205 | { |
| 206 | if (!pGlxPbuffer->idExists && !pGlxPbuffer->refcnt) { |
| 207 | free(pGlxPbuffer->be_xids); |
| 208 | free(pGlxPbuffer); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | static void |
| 213 | PbufferGone(__glXPbuffer * pGlxPbuffer, XID id) |
| 214 | { |
| 215 | pGlxPbuffer->idExists = False; |
| 216 | __glXFreeGLXPbuffer(pGlxPbuffer); |
| 217 | } |
| 218 | |
| 219 | /* |
| 220 | ** Free a context. |
| 221 | */ |
| 222 | GLboolean |
| 223 | __glXFreeContext(__GLXcontext * cx) |
| 224 | { |
| 225 | if (cx->idExists || cx->isCurrent) |
| 226 | return GL_FALSE; |
| 227 | |
| 228 | free(cx->feedbackBuf); |
| 229 | free(cx->selectBuf); |
| 230 | free(cx->real_ids); |
| 231 | free(cx->real_vids); |
| 232 | |
| 233 | if (cx->pGlxPixmap) { |
| 234 | /* |
| 235 | ** The previous drawable was a glx pixmap, release it. |
| 236 | */ |
| 237 | cx->pGlxPixmap->refcnt--; |
| 238 | __glXFreeGLXPixmap(cx->pGlxPixmap); |
| 239 | cx->pGlxPixmap = 0; |
| 240 | } |
| 241 | |
| 242 | if (cx->pGlxReadPixmap) { |
| 243 | /* |
| 244 | ** The previous drawable was a glx pixmap, release it. |
| 245 | */ |
| 246 | cx->pGlxReadPixmap->refcnt--; |
| 247 | __glXFreeGLXPixmap(cx->pGlxReadPixmap); |
| 248 | cx->pGlxReadPixmap = 0; |
| 249 | } |
| 250 | |
| 251 | if (cx->pGlxWindow) { |
| 252 | /* |
| 253 | ** The previous drawable was a glx window, release it. |
| 254 | */ |
| 255 | cx->pGlxWindow->refcnt--; |
| 256 | __glXFreeGLXWindow(cx->pGlxWindow); |
| 257 | cx->pGlxWindow = 0; |
| 258 | } |
| 259 | |
| 260 | if (cx->pGlxReadWindow) { |
| 261 | /* |
| 262 | ** The previous drawable was a glx window, release it. |
| 263 | */ |
| 264 | cx->pGlxReadWindow->refcnt--; |
| 265 | __glXFreeGLXWindow(cx->pGlxReadWindow); |
| 266 | cx->pGlxReadWindow = 0; |
| 267 | } |
| 268 | |
| 269 | free(cx); |
| 270 | |
| 271 | if (cx == __glXLastContext) { |
| 272 | __glXFlushContextCache(); |
| 273 | } |
| 274 | |
| 275 | return GL_TRUE; |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | ** Initialize the GLX extension. |
| 280 | */ |
| 281 | void |
| 282 | GlxExtensionInit(void) |
| 283 | { |
| 284 | ExtensionEntry *extEntry; |
| 285 | int i; |
| 286 | int glxSupported = 1; |
| 287 | |
| 288 | /* |
| 289 | // do not initialize GLX extension if GLX is not supported |
| 290 | // by ALL back-end servers. |
| 291 | */ |
| 292 | for (i = 0; i < screenInfo.numScreens; i++) { |
| 293 | glxSupported &= (dmxScreens[i].glxMajorOpcode > 0); |
| 294 | } |
| 295 | |
| 296 | if (!glxSupported || !dmxGLXProxy) { |
| 297 | return; |
| 298 | } |
| 299 | |
| 300 | __glXContextRes = CreateNewResourceType((DeleteType) ContextGone, |
| 301 | "GLXContext"); |
| 302 | __glXClientRes = CreateNewResourceType((DeleteType) ClientGone, |
| 303 | "GLXClient"); |
| 304 | __glXPixmapRes = CreateNewResourceType((DeleteType) PixmapGone, |
| 305 | "GLXPixmap"); |
| 306 | __glXWindowRes = CreateNewResourceType((DeleteType) WindowGone, |
| 307 | "GLXWindow"); |
| 308 | __glXPbufferRes = CreateNewResourceType((DeleteType) PbufferGone, |
| 309 | "GLXPbuffer"); |
| 310 | |
| 311 | if (!__glXContextRes || !__glXClientRes || !__glXPixmapRes || |
| 312 | !__glXWindowRes || !__glXPbufferRes) |
| 313 | return; |
| 314 | |
| 315 | /* |
| 316 | ** Add extension to server extensions. |
| 317 | */ |
| 318 | extEntry = AddExtension(GLX_EXTENSION_NAME, __GLX_NUMBER_EVENTS, |
| 319 | __GLX_NUMBER_ERRORS, __glXDispatch, |
| 320 | __glXSwapDispatch, ResetExtension, |
| 321 | StandardMinorOpcode); |
| 322 | if (!extEntry) { |
| 323 | FatalError("__glXExtensionInit: AddExtensions failed\n"); |
| 324 | return; |
| 325 | } |
| 326 | /* |
| 327 | if (!AddExtensionAlias(GLX_EXTENSION_ALIAS, extEntry)) { |
| 328 | ErrorF("__glXExtensionInit: AddExtensionAlias failed\n"); |
| 329 | return; |
| 330 | } |
| 331 | */ |
| 332 | |
| 333 | __glXerrorBase = extEntry->errorBase; |
| 334 | __glXBadContext = extEntry->errorBase + GLXBadContext; |
| 335 | __glXBadContextState = extEntry->errorBase + GLXBadContextState; |
| 336 | __glXBadDrawable = extEntry->errorBase + GLXBadDrawable; |
| 337 | __glXBadPixmap = extEntry->errorBase + GLXBadPixmap; |
| 338 | __glXBadContextTag = extEntry->errorBase + GLXBadContextTag; |
| 339 | __glXBadCurrentWindow = extEntry->errorBase + GLXBadCurrentWindow; |
| 340 | __glXBadRenderRequest = extEntry->errorBase + GLXBadRenderRequest; |
| 341 | __glXBadLargeRequest = extEntry->errorBase + GLXBadLargeRequest; |
| 342 | __glXUnsupportedPrivateRequest = extEntry->errorBase + |
| 343 | GLXUnsupportedPrivateRequest; |
| 344 | __glXBadFBConfig = extEntry->errorBase + GLXBadFBConfig; |
| 345 | __glXBadPbuffer = extEntry->errorBase + GLXBadPbuffer; |
| 346 | |
| 347 | /* |
| 348 | ** Initialize table of client state. There is never a client 0. |
| 349 | */ |
| 350 | for (i = 1; i <= MAXCLIENTS; i++) { |
| 351 | __glXClients[i] = 0; |
| 352 | } |
| 353 | |
| 354 | /* |
| 355 | ** Initialize screen specific data. |
| 356 | */ |
| 357 | __glXScreenInit(screenInfo.numScreens); |
| 358 | |
| 359 | /* |
| 360 | ** Initialize swap barrier support. |
| 361 | */ |
| 362 | SwapBarrierInit(); |
| 363 | } |
| 364 | |
| 365 | /************************************************************************/ |
| 366 | |
| 367 | Bool |
| 368 | __glXCoreType(void) |
| 369 | { |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | /************************************************************************/ |
| 374 | |
| 375 | void |
| 376 | __glXFlushContextCache(void) |
| 377 | { |
| 378 | __glXLastContext = 0; |
| 379 | } |
| 380 | |
| 381 | /************************************************************************/ |
| 382 | |
| 383 | /* |
| 384 | ** Top level dispatcher; all commands are executed from here down. |
| 385 | */ |
| 386 | static int |
| 387 | __glXDispatch(ClientPtr client) |
| 388 | { |
| 389 | REQUEST(xGLXSingleReq); |
| 390 | CARD8 opcode; |
| 391 | int (*proc) (__GLXclientState * cl, GLbyte * pc); |
| 392 | __GLXclientState *cl; |
| 393 | |
| 394 | opcode = stuff->glxCode; |
| 395 | cl = __glXClients[client->index]; |
| 396 | if (!cl) { |
| 397 | cl = calloc(1, sizeof(__GLXclientState)); |
| 398 | __glXClients[client->index] = cl; |
| 399 | if (!cl) { |
| 400 | return BadAlloc; |
| 401 | } |
| 402 | |
| 403 | cl->be_displays = calloc(screenInfo.numScreens, sizeof(Display *)); |
| 404 | if (!cl->be_displays) { |
| 405 | free(cl); |
| 406 | return BadAlloc; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | if (!cl->inUse) { |
| 411 | /* |
| 412 | ** This is first request from this client. Associate a resource |
| 413 | ** with the client so we will be notified when the client dies. |
| 414 | */ |
| 415 | XID xid = FakeClientID(client->index); |
| 416 | |
| 417 | if (!AddResource(xid, __glXClientRes, (pointer) (long) client->index)) { |
| 418 | return BadAlloc; |
| 419 | } |
| 420 | ResetClientState(client->index); |
| 421 | cl->largeCmdRequestsTotal = 0; |
| 422 | cl->inUse = GL_TRUE; |
| 423 | cl->client = client; |
| 424 | } |
| 425 | |
| 426 | /* |
| 427 | ** Check for valid opcode. |
| 428 | */ |
| 429 | if (opcode >= __GLX_SINGLE_TABLE_SIZE) { |
| 430 | return BadRequest; |
| 431 | } |
| 432 | |
| 433 | /* |
| 434 | ** Use the opcode to index into the procedure table. |
| 435 | */ |
| 436 | proc = __glXSingleTable[opcode]; |
| 437 | return (*proc) (cl, (GLbyte *) stuff); |
| 438 | } |
| 439 | |
| 440 | static int |
| 441 | __glXSwapDispatch(ClientPtr client) |
| 442 | { |
| 443 | REQUEST(xGLXSingleReq); |
| 444 | CARD8 opcode; |
| 445 | int (*proc) (__GLXclientState * cl, GLbyte * pc); |
| 446 | __GLXclientState *cl; |
| 447 | |
| 448 | opcode = stuff->glxCode; |
| 449 | cl = __glXClients[client->index]; |
| 450 | if (!cl) { |
| 451 | cl = calloc(1, sizeof(__GLXclientState)); |
| 452 | __glXClients[client->index] = cl; |
| 453 | if (!cl) { |
| 454 | return BadAlloc; |
| 455 | } |
| 456 | |
| 457 | cl->be_displays = calloc(screenInfo.numScreens, sizeof(Display *)); |
| 458 | if (!cl->be_displays) { |
| 459 | free(cl); |
| 460 | return BadAlloc; |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | if (!cl->inUse) { |
| 465 | /* |
| 466 | ** This is first request from this client. Associate a resource |
| 467 | ** with the client so we will be notified when the client dies. |
| 468 | */ |
| 469 | XID xid = FakeClientID(client->index); |
| 470 | |
| 471 | if (!AddResource(xid, __glXClientRes, (pointer) (long) client->index)) { |
| 472 | return BadAlloc; |
| 473 | } |
| 474 | ResetClientState(client->index); |
| 475 | cl->inUse = GL_TRUE; |
| 476 | cl->client = client; |
| 477 | } |
| 478 | |
| 479 | /* |
| 480 | ** Check for valid opcode. |
| 481 | */ |
| 482 | if (opcode >= __GLX_SINGLE_TABLE_SIZE) { |
| 483 | return BadRequest; |
| 484 | } |
| 485 | |
| 486 | /* |
| 487 | ** Use the opcode to index into the procedure table. |
| 488 | */ |
| 489 | proc = __glXSwapSingleTable[opcode]; |
| 490 | return (*proc) (cl, (GLbyte *) stuff); |
| 491 | } |
| 492 | |
| 493 | int |
| 494 | __glXNoSuchSingleOpcode(__GLXclientState * cl, GLbyte * pc) |
| 495 | { |
| 496 | return BadRequest; |
| 497 | } |
| 498 | |
| 499 | void |
| 500 | __glXNoSuchRenderOpcode(GLbyte * pc) |
| 501 | { |
| 502 | return; |
| 503 | } |