src/glx/glx_pbuffer.c

   1 /*
   2  * (C) Copyright IBM Corporation 2004
   3  * 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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file glx_pbuffer.c
  27  * Implementation of pbuffer related functions.
  28  *
  29  * \author Ian Romanick <idr@us.ibm.com>
  30  */
  31
  32 #include <inttypes.h>
  33 #include "glxclient.h"
  34 #include <X11/extensions/extutil.h>
  35 #include <X11/extensions/Xext.h>
  36 #include <assert.h>
  37 #include <string.h>
  38 #include "glxextensions.h"
  39
  40 #ifdef GLX_USE_APPLEGL
  41 #include <pthread.h>
  42 #include "apple_glx_drawable.h"
  43 #include "glx_error.h"
  44 #endif
  45
  46 #define WARN_ONCE_GLX_1_3(a, b) {               \
  47                 static int warned=1;            \
  48                 if(warned) {                    \
  49                         warn_GLX_1_3((a), b );  \
  50                         warned=0;               \
  51                 }                               \
  52         }
  53
  54 /**
  55  * Emit a warning when clients use GLX 1.3 functions on pre-1.3 systems.
  56  */
  57 static void
  58 warn_GLX_1_3(Display * dpy, const char *function_name)
  59 {
  60    struct glx_display *priv = __glXInitialize(dpy);
  61
  62    if (priv->minorVersion < 3) {
  63       fprintf(stderr,
  64               "WARNING: Application calling GLX 1.3 function \"%s\" "
  65               "when GLX 1.3 is not supported!  This is an application bug!\n",
  66               function_name);
  67    }
  68 }
  69
  70 #ifndef GLX_USE_APPLEGL
  71 /**
  72  * Change a drawable's attribute.
  73  *
  74  * This function is used to implement \c glXSelectEvent and
  75  * \c glXSelectEventSGIX.
  76  *
  77  * \note
  78  * This function dynamically determines whether to use the SGIX_pbuffer
  79  * version of the protocol or the GLX 1.3 version of the protocol.
  80  */
  81 static void
  82 ChangeDrawableAttribute(Display * dpy, GLXDrawable drawable,
  83                         const CARD32 * attribs, size_t num_attribs)
  84 {
  85    struct glx_display *priv = __glXInitialize(dpy);
  86 #ifdef GLX_DIRECT_RENDERING
  87    __GLXDRIdrawable *pdraw;
  88 #endif
  89    CARD32 *output;
  90    CARD8 opcode;
  91    int i;
  92
  93    if ((dpy == NULL) || (drawable == 0)) {
  94       return;
  95    }
  96
  97    opcode = __glXSetupForCommand(dpy);
  98    if (!opcode)
  99       return;
 100
 101    LockDisplay(dpy);
 102
 103    if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
 104       xGLXChangeDrawableAttributesReq *req;
 105
 106       GetReqExtra(GLXChangeDrawableAttributes, 8 * num_attribs, req);
 107       output = (CARD32 *) (req + 1);
 108
 109       req->reqType = opcode;
 110       req->glxCode = X_GLXChangeDrawableAttributes;
 111       req->drawable = drawable;
 112       req->numAttribs = (CARD32) num_attribs;
 113    }
 114    else {
 115       xGLXVendorPrivateWithReplyReq *vpreq;
 116
 117       GetReqExtra(GLXVendorPrivateWithReply, 8 + (8 * num_attribs), vpreq);
 118       output = (CARD32 *) (vpreq + 1);
 119
 120       vpreq->reqType = opcode;
 121       vpreq->glxCode = X_GLXVendorPrivateWithReply;
 122       vpreq->vendorCode = X_GLXvop_ChangeDrawableAttributesSGIX;
 123
 124       output[0] = (CARD32) drawable;
 125       output[1] = num_attribs;
 126       output += 2;
 127    }
 128
 129    (void) memcpy(output, attribs, sizeof(CARD32) * 2 * num_attribs);
 130
 131    UnlockDisplay(dpy);
 132    SyncHandle();
 133
 134 #ifdef GLX_DIRECT_RENDERING
 135    pdraw = GetGLXDRIDrawable(dpy, drawable);
 136
 137    if (!pdraw)
 138       return;
 139
 140    for (i = 0; i < num_attribs; i++) {
 141       switch(attribs[i * 2]) {
 142       case GLX_EVENT_MASK:
 143          /* Keep a local copy for masking out DRI2 proto events as needed */
 144          pdraw->eventMask = attribs[i * 2 + 1];
 145          break;
 146       }
 147    }
 148 #endif
 149
 150    return;
 151 }
 152
 153
 154 #ifdef GLX_DIRECT_RENDERING
 155 static GLenum
 156 determineTextureTarget(const int *attribs, int numAttribs)
 157 {
 158    GLenum target = 0;
 159    int i;
 160
 161    for (i = 0; i < numAttribs; i++) {
 162       if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {
 163          switch (attribs[2 * i + 1]) {
 164          case GLX_TEXTURE_2D_EXT:
 165             target = GL_TEXTURE_2D;
 166             break;
 167          case GLX_TEXTURE_RECTANGLE_EXT:
 168             target = GL_TEXTURE_RECTANGLE_ARB;
 169             break;
 170          }
 171       }
 172    }
 173
 174    return target;
 175 }
 176
 177 static GLenum
 178 determineTextureFormat(const int *attribs, int numAttribs)
 179 {
 180    int i;
 181
 182    for (i = 0; i < numAttribs; i++) {
 183       if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)
 184          return attribs[2 * i + 1];
 185    }
 186
 187    return 0;
 188 }
 189
 190 static GLboolean
 191 CreateDRIDrawable(Display *dpy, struct glx_config *config,
 192                   XID drawable, XID glxdrawable,
 193                   const int *attrib_list, size_t num_attribs)
 194 {
 195    struct glx_display *const priv = __glXInitialize(dpy);
 196    __GLXDRIdrawable *pdraw;
 197    struct glx_screen *psc;
 198
 199    psc = priv->screens[config->screen];
 200    if (psc->driScreen == NULL)
 201       return GL_TRUE;
 202
 203    pdraw = psc->driScreen->createDrawable(psc, drawable,
 204                                           glxdrawable, config);
 205    if (pdraw == NULL) {
 206       fprintf(stderr, "failed to create drawable\n");
 207       return GL_FALSE;
 208    }
 209
 210    if (__glxHashInsert(priv->drawHash, glxdrawable, pdraw)) {
 211       (*pdraw->destroyDrawable) (pdraw);
 212       return GL_FALSE;
 213    }
 214
 215    pdraw->textureTarget = determineTextureTarget(attrib_list, num_attribs);
 216    pdraw->textureFormat = determineTextureFormat(attrib_list, num_attribs);
 217
 218    return GL_TRUE;
 219 }
 220
 221 static void
 222 DestroyDRIDrawable(Display *dpy, GLXDrawable drawable, int destroy_xdrawable)
 223 {
 224    struct glx_display *const priv = __glXInitialize(dpy);
 225    __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
 226    XID xid;
 227
 228    if (pdraw != NULL) {
 229       xid = pdraw->xDrawable;
 230       (*pdraw->destroyDrawable) (pdraw);
 231       __glxHashDelete(priv->drawHash, drawable);
 232       if (destroy_xdrawable)
 233          XFreePixmap(priv->dpy, xid);
 234    }
 235 }
 236
 237 #else
 238
 239 static GLboolean
 240 CreateDRIDrawable(Display *dpy, const struct glx_config * fbconfig,
 241                   XID drawable, XID glxdrawable,
 242                   const int *attrib_list, size_t num_attribs)
 243 {
 244     return GL_FALSE;
 245 }
 246
 247 static void
 248 DestroyDRIDrawable(Display *dpy, GLXDrawable drawable, int destroy_xdrawable)
 249 {
 250 }
 251
 252 #endif
 253
 254 /**
 255  * Get a drawable's attribute.
 256  *
 257  * This function is used to implement \c glXGetSelectedEvent and
 258  * \c glXGetSelectedEventSGIX.
 259  *
 260  * \note
 261  * This function dynamically determines whether to use the SGIX_pbuffer
 262  * version of the protocol or the GLX 1.3 version of the protocol.
 263  *
 264  * \todo
 265  * The number of attributes returned is likely to be small, probably less than
 266  * 10.  Given that, this routine should try to use an array on the stack to
 267  * capture the reply rather than always calling Xmalloc.
 268  */
 269 static int
 270 GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
 271                      int attribute, unsigned int *value)
 272 {
 273    struct glx_display *priv;
 274    xGLXGetDrawableAttributesReply reply;
 275    CARD32 *data;
 276    CARD8 opcode;
 277    unsigned int length;
 278    unsigned int i;
 279    unsigned int num_attributes;
 280    GLboolean use_glx_1_3;
 281
 282    if ((dpy == NULL) || (drawable == 0)) {
 283       return 0;
 284    }
 285
 286    priv = __glXInitialize(dpy);
 287    use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));
 288
 289    *value = 0;
 290
 291
 292    opcode = __glXSetupForCommand(dpy);
 293    if (!opcode)
 294       return 0;
 295
 296    LockDisplay(dpy);
 297
 298    if (use_glx_1_3) {
 299       xGLXGetDrawableAttributesReq *req;
 300
 301       GetReq(GLXGetDrawableAttributes, req);
 302       req->reqType = opcode;
 303       req->glxCode = X_GLXGetDrawableAttributes;
 304       req->drawable = drawable;
 305    }
 306    else {
 307       xGLXVendorPrivateWithReplyReq *vpreq;
 308
 309       GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
 310       data = (CARD32 *) (vpreq + 1);
 311       data[0] = (CARD32) drawable;
 312
 313       vpreq->reqType = opcode;
 314       vpreq->glxCode = X_GLXVendorPrivateWithReply;
 315       vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
 316    }
 317
 318    _XReply(dpy, (xReply *) & reply, 0, False);
 319
 320    if (reply.type == X_Error) {
 321       UnlockDisplay(dpy);
 322       SyncHandle();
 323       return 0;
 324    }
 325
 326    length = reply.length;
 327    if (length) {
 328       num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
 329       data = (CARD32 *) Xmalloc(length * sizeof(CARD32));
 330       if (data == NULL) {
 331          /* Throw data on the floor */
 332          _XEatData(dpy, length);
 333       }
 334       else {
 335          _XRead(dpy, (char *) data, length * sizeof(CARD32));
 336
 337          /* Search the set of returned attributes for the attribute requested by
 338           * the caller.
 339           */
 340          for (i = 0; i < num_attributes; i++) {
 341             if (data[i * 2] == attribute) {
 342                *value = data[(i * 2) + 1];
 343                break;
 344             }
 345          }
 346
 347 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 348          {
 349             __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
 350
 351             if (pdraw != NULL && !pdraw->textureTarget)
 352                pdraw->textureTarget =
 353                   determineTextureTarget((const int *) data, num_attributes);
 354             if (pdraw != NULL && !pdraw->textureFormat)
 355                pdraw->textureFormat =
 356                   determineTextureFormat((const int *) data, num_attributes);
 357          }
 358 #endif
 359
 360          Xfree(data);
 361       }
 362    }
 363
 364    UnlockDisplay(dpy);
 365    SyncHandle();
 366
 367    return 0;
 368 }
 369
 370 static void
 371 protocolDestroyDrawable(Display *dpy, GLXDrawable drawable, CARD32 glxCode)
 372 {
 373    xGLXDestroyPbufferReq *req;
 374    CARD8 opcode;
 375
 376    opcode = __glXSetupForCommand(dpy);
 377    if (!opcode)
 378       return;
 379
 380    LockDisplay(dpy);
 381
 382    GetReq(GLXDestroyPbuffer, req);
 383    req->reqType = opcode;
 384    req->glxCode = glxCode;
 385    req->pbuffer = (GLXPbuffer) drawable;
 386
 387    UnlockDisplay(dpy);
 388    SyncHandle();
 389 }
 390
 391 /**
 392  * Create a non-pbuffer GLX drawable.
 393  */
 394 static GLXDrawable
 395 CreateDrawable(Display *dpy, struct glx_config *config,
 396                Drawable drawable, const int *attrib_list, CARD8 glxCode)
 397 {
 398    xGLXCreateWindowReq *req;
 399    CARD32 *data;
 400    unsigned int i;
 401    CARD8 opcode;
 402    GLXDrawable xid;
 403
 404    i = 0;
 405    if (attrib_list) {
 406       while (attrib_list[i * 2] != None)
 407          i++;
 408    }
 409
 410    opcode = __glXSetupForCommand(dpy);
 411    if (!opcode)
 412       return None;
 413
 414    LockDisplay(dpy);
 415    GetReqExtra(GLXCreateWindow, 8 * i, req);
 416    data = (CARD32 *) (req + 1);
 417
 418    req->reqType = opcode;
 419    req->glxCode = glxCode;
 420    req->screen = config->screen;
 421    req->fbconfig = config->fbconfigID;
 422    req->window = drawable;
 423    req->glxwindow = xid = XAllocID(dpy);
 424    req->numAttribs = i;
 425
 426    if (attrib_list)
 427       memcpy(data, attrib_list, 8 * i);
 428
 429    UnlockDisplay(dpy);
 430    SyncHandle();
 431
 432    if (!CreateDRIDrawable(dpy, config, drawable, xid, attrib_list, i)) {
 433       if (glxCode == X_GLXCreatePixmap)
 434          glxCode = X_GLXDestroyPixmap;
 435       else
 436          glxCode = X_GLXDestroyWindow;
 437       protocolDestroyDrawable(dpy, xid, glxCode);
 438       xid = None;
 439    }
 440
 441    return xid;
 442 }
 443
 444
 445 /**
 446  * Destroy a non-pbuffer GLX drawable.
 447  */
 448 static void
 449 DestroyDrawable(Display * dpy, GLXDrawable drawable, CARD32 glxCode)
 450 {
 451    if ((dpy == NULL) || (drawable == 0)) {
 452       return;
 453    }
 454
 455    protocolDestroyDrawable(dpy, drawable, glxCode);
 456
 457    DestroyDRIDrawable(dpy, drawable, GL_FALSE);
 458
 459    return;
 460 }
 461
 462
 463 /**
 464  * Create a pbuffer.
 465  *
 466  * This function is used to implement \c glXCreatePbuffer and
 467  * \c glXCreateGLXPbufferSGIX.
 468  *
 469  * \note
 470  * This function dynamically determines whether to use the SGIX_pbuffer
 471  * version of the protocol or the GLX 1.3 version of the protocol.
 472  */
 473 static GLXDrawable
 474 CreatePbuffer(Display * dpy, struct glx_config *config,
 475               unsigned int width, unsigned int height,
 476               const int *attrib_list, GLboolean size_in_attribs)
 477 {
 478    struct glx_display *priv = __glXInitialize(dpy);
 479    GLXDrawable id = 0;
 480    CARD32 *data;
 481    CARD8 opcode;
 482    unsigned int i;
 483    Pixmap pixmap;
 484    GLboolean glx_1_3 = GL_FALSE;
 485
 486    i = 0;
 487    if (attrib_list) {
 488       while (attrib_list[i * 2])
 489          i++;
 490    }
 491
 492    opcode = __glXSetupForCommand(dpy);
 493    if (!opcode)
 494       return None;
 495
 496    LockDisplay(dpy);
 497    id = XAllocID(dpy);
 498
 499    if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
 500       xGLXCreatePbufferReq *req;
 501       unsigned int extra = (size_in_attribs) ? 0 : 2;
 502
 503       glx_1_3 = GL_TRUE;
 504
 505       GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
 506       data = (CARD32 *) (req + 1);
 507
 508       req->reqType = opcode;
 509       req->glxCode = X_GLXCreatePbuffer;
 510       req->screen = config->screen;
 511       req->fbconfig = config->fbconfigID;
 512       req->pbuffer = id;
 513       req->numAttribs = i + extra;
 514
 515       if (!size_in_attribs) {
 516          data[(2 * i) + 0] = GLX_PBUFFER_WIDTH;
 517          data[(2 * i) + 1] = width;
 518          data[(2 * i) + 2] = GLX_PBUFFER_HEIGHT;
 519          data[(2 * i) + 3] = height;
 520          data += 4;
 521       }
 522    }
 523    else {
 524       xGLXVendorPrivateReq *vpreq;
 525
 526       GetReqExtra(GLXVendorPrivate, 20 + (8 * i), vpreq);
 527       data = (CARD32 *) (vpreq + 1);
 528
 529       vpreq->reqType = opcode;
 530       vpreq->glxCode = X_GLXVendorPrivate;
 531       vpreq->vendorCode = X_GLXvop_CreateGLXPbufferSGIX;
 532
 533       data[0] = config->screen;
 534       data[1] = config->fbconfigID;
 535       data[2] = id;
 536       data[3] = width;
 537       data[4] = height;
 538       data += 5;
 539    }
 540
 541    (void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
 542
 543    UnlockDisplay(dpy);
 544    SyncHandle();
 545
 546    pixmap = XCreatePixmap(dpy, RootWindow(dpy, config->screen),
 547                           width, height, config->rgbBits);
 548
 549    if (!CreateDRIDrawable(dpy, config, pixmap, id, attrib_list, i)) {
 550       CARD32 o = glx_1_3 ? X_GLXDestroyPbuffer : X_GLXvop_DestroyGLXPbufferSGIX;
 551       XFreePixmap(dpy, pixmap);
 552       protocolDestroyDrawable(dpy, id, o);
 553       id = None;
 554    }
 555
 556    return id;
 557 }
 558
 559 /**
 560  * Destroy a pbuffer.
 561  *
 562  * This function is used to implement \c glXDestroyPbuffer and
 563  * \c glXDestroyGLXPbufferSGIX.
 564  *
 565  * \note
 566  * This function dynamically determines whether to use the SGIX_pbuffer
 567  * version of the protocol or the GLX 1.3 version of the protocol.
 568  */
 569 static void
 570 DestroyPbuffer(Display * dpy, GLXDrawable drawable)
 571 {
 572    struct glx_display *priv = __glXInitialize(dpy);
 573    CARD8 opcode;
 574
 575    if ((dpy == NULL) || (drawable == 0)) {
 576       return;
 577    }
 578
 579    opcode = __glXSetupForCommand(dpy);
 580    if (!opcode)
 581       return;
 582
 583    LockDisplay(dpy);
 584
 585    if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
 586       xGLXDestroyPbufferReq *req;
 587
 588       GetReq(GLXDestroyPbuffer, req);
 589       req->reqType = opcode;
 590       req->glxCode = X_GLXDestroyPbuffer;
 591       req->pbuffer = (GLXPbuffer) drawable;
 592    }
 593    else {
 594       xGLXVendorPrivateWithReplyReq *vpreq;
 595       CARD32 *data;
 596
 597       GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
 598       data = (CARD32 *) (vpreq + 1);
 599
 600       data[0] = (CARD32) drawable;
 601
 602       vpreq->reqType = opcode;
 603       vpreq->glxCode = X_GLXVendorPrivateWithReply;
 604       vpreq->vendorCode = X_GLXvop_DestroyGLXPbufferSGIX;
 605    }
 606
 607    UnlockDisplay(dpy);
 608    SyncHandle();
 609
 610    DestroyDRIDrawable(dpy, drawable, GL_TRUE);
 611
 612    return;
 613 }
 614
 615 /**
 616  * Create a new pbuffer.
 617  */
 618 _X_EXPORT GLXPbufferSGIX
 619 glXCreateGLXPbufferSGIX(Display * dpy, GLXFBConfigSGIX config,
 620                         unsigned int width, unsigned int height,
 621                         int *attrib_list)
 622 {
 623    return (GLXPbufferSGIX) CreatePbuffer(dpy, (struct glx_config *) config,
 624                                          width, height,
 625                                          attrib_list, GL_FALSE);
 626 }
 627
 628 #endif /* GLX_USE_APPLEGL */
 629
 630 /**
 631  * Create a new pbuffer.
 632  */
 633 _X_EXPORT GLXPbuffer
 634 glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
 635 {
 636    int i, width, height;
 637 #ifdef GLX_USE_APPLEGL
 638    GLXPbuffer result;
 639    int errorcode;
 640 #endif
 641
 642    width = 0;
 643    height = 0;
 644
 645    WARN_ONCE_GLX_1_3(dpy, __func__);
 646
 647 #ifdef GLX_USE_APPLEGL
 648    for (i = 0; attrib_list[i]; ++i) {
 649       switch (attrib_list[i]) {
 650       case GLX_PBUFFER_WIDTH:
 651          width = attrib_list[i + 1];
 652          ++i;
 653          break;
 654
 655       case GLX_PBUFFER_HEIGHT:
 656          height = attrib_list[i + 1];
 657          ++i;
 658          break;
 659
 660       case GLX_LARGEST_PBUFFER:
 661          /* This is a hint we should probably handle, but how? */
 662          ++i;
 663          break;
 664
 665       case GLX_PRESERVED_CONTENTS:
 666          /* The contents are always preserved with AppleSGLX with CGL. */
 667          ++i;
 668          break;
 669
 670       default:
 671          return None;
 672       }
 673    }
 674
 675    if (apple_glx_pbuffer_create(dpy, config, width, height, &errorcode,
 676                                 &result)) {
 677       /*
 678        * apple_glx_pbuffer_create only sets the errorcode to core X11
 679        * errors.
 680        */
 681       __glXSendError(dpy, errorcode, 0, X_GLXCreatePbuffer, true);
 682
 683       return None;
 684    }
 685
 686    return result;
 687 #else
 688    for (i = 0; attrib_list[i * 2]; i++) {
 689       switch (attrib_list[i * 2]) {
 690       case GLX_PBUFFER_WIDTH:
 691          width = attrib_list[i * 2 + 1];
 692          break;
 693       case GLX_PBUFFER_HEIGHT:
 694          height = attrib_list[i * 2 + 1];
 695          break;
 696       }
 697    }
 698
 699    return (GLXPbuffer) CreatePbuffer(dpy, (struct glx_config *) config,
 700                                      width, height, attrib_list, GL_TRUE);
 701 #endif
 702 }
 703
 704
 705 /**
 706  * Destroy an existing pbuffer.
 707  */
 708 _X_EXPORT void
 709 glXDestroyPbuffer(Display * dpy, GLXPbuffer pbuf)
 710 {
 711 #ifdef GLX_USE_APPLEGL
 712    if (apple_glx_pbuffer_destroy(dpy, pbuf)) {
 713       __glXSendError(dpy, GLXBadPbuffer, pbuf, X_GLXDestroyPbuffer, false);
 714    }
 715 #else
 716    DestroyPbuffer(dpy, pbuf);
 717 #endif
 718 }
 719
 720
 721 /**
 722  * Query an attribute of a drawable.
 723  */
 724 _X_EXPORT void
 725 glXQueryDrawable(Display * dpy, GLXDrawable drawable,
 726                  int attribute, unsigned int *value)
 727 {
 728    WARN_ONCE_GLX_1_3(dpy, __func__);
 729 #ifdef GLX_USE_APPLEGL
 730    Window root;
 731    int x, y;
 732    unsigned int width, height, bd, depth;
 733
 734    if (apple_glx_pixmap_query(drawable, attribute, value))
 735       return;                   /*done */
 736
 737    if (apple_glx_pbuffer_query(drawable, attribute, value))
 738       return;                   /*done */
 739
 740    /*
 741     * The OpenGL spec states that we should report GLXBadDrawable if
 742     * the drawable is invalid, however doing so would require that we
 743     * use XSetErrorHandler(), which is known to not be thread safe.
 744     * If we use a round-trip call to validate the drawable, there could
 745     * be a race, so instead we just opt in favor of letting the
 746     * XGetGeometry request fail with a GetGeometry request X error
 747     * rather than GLXBadDrawable, in what is hoped to be a rare
 748     * case of an invalid drawable.  In practice most and possibly all
 749     * X11 apps using GLX shouldn't notice a difference.
 750     */
 751    if (XGetGeometry
 752        (dpy, drawable, &root, &x, &y, &width, &height, &bd, &depth)) {
 753       switch (attribute) {
 754       case GLX_WIDTH:
 755          *value = width;
 756          break;
 757
 758       case GLX_HEIGHT:
 759          *value = height;
 760          break;
 761       }
 762    }
 763 #else
 764    GetDrawableAttribute(dpy, drawable, attribute, value);
 765 #endif
 766 }
 767
 768
 769 #ifndef GLX_USE_APPLEGL
 770 /**
 771  * Query an attribute of a pbuffer.
 772  */
 773 _X_EXPORT int
 774 glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
 775                        int attribute, unsigned int *value)
 776 {
 777    return GetDrawableAttribute(dpy, drawable, attribute, value);
 778 }
 779 #endif
 780
 781 /**
 782  * Select the event mask for a drawable.
 783  */
 784 _X_EXPORT void
 785 glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
 786 {
 787 #ifdef GLX_USE_APPLEGL
 788    XWindowAttributes xwattr;
 789
 790    if (apple_glx_pbuffer_set_event_mask(drawable, mask))
 791       return;                   /*done */
 792
 793    /*
 794     * The spec allows a window, but currently there are no valid
 795     * events for a window, so do nothing.
 796     */
 797    if (XGetWindowAttributes(dpy, drawable, &xwattr))
 798       return;                   /*done */
 799    /* The drawable seems to be invalid.  Report an error. */
 800
 801    __glXSendError(dpy, GLXBadDrawable, drawable,
 802                   X_GLXChangeDrawableAttributes, false);
 803 #else
 804    CARD32 attribs[2];
 805
 806    attribs[0] = (CARD32) GLX_EVENT_MASK;
 807    attribs[1] = (CARD32) mask;
 808
 809    ChangeDrawableAttribute(dpy, drawable, attribs, 1);
 810 #endif
 811 }
 812
 813
 814 /**
 815  * Get the selected event mask for a drawable.
 816  */
 817 _X_EXPORT void
 818 glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
 819 {
 820 #ifdef GLX_USE_APPLEGL
 821    XWindowAttributes xwattr;
 822
 823    if (apple_glx_pbuffer_get_event_mask(drawable, mask))
 824       return;                   /*done */
 825
 826    /*
 827     * The spec allows a window, but currently there are no valid
 828     * events for a window, so do nothing, but set the mask to 0.
 829     */
 830    if (XGetWindowAttributes(dpy, drawable, &xwattr)) {
 831       /* The window is valid, so set the mask to 0. */
 832       *mask = 0;
 833       return;                   /*done */
 834    }
 835    /* The drawable seems to be invalid.  Report an error. */
 836
 837    __glXSendError(dpy, GLXBadDrawable, drawable, X_GLXGetDrawableAttributes,
 838                   true);
 839 #else
 840    unsigned int value;
 841
 842
 843    /* The non-sense with value is required because on LP64 platforms
 844     * sizeof(unsigned int) != sizeof(unsigned long).  On little-endian
 845     * we could just type-cast the pointer, but why?
 846     */
 847
 848    GetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
 849    *mask = value;
 850 #endif
 851 }
 852
 853
 854 _X_EXPORT GLXPixmap
 855 glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap,
 856                 const int *attrib_list)
 857 {
 858    WARN_ONCE_GLX_1_3(dpy, __func__);
 859
 860 #ifdef GLX_USE_APPLEGL
 861    const struct glx_config *modes = (const struct glx_config *) config;
 862
 863    if (apple_glx_pixmap_create(dpy, modes->screen, pixmap, modes))
 864       return None;
 865
 866    return pixmap;
 867 #else
 868    return CreateDrawable(dpy, (struct glx_config *) config,
 869                          (Drawable) pixmap, attrib_list, X_GLXCreatePixmap);
 870 #endif
 871 }
 872
 873
 874 _X_EXPORT GLXWindow
 875 glXCreateWindow(Display * dpy, GLXFBConfig config, Window win,
 876                 const int *attrib_list)
 877 {
 878    WARN_ONCE_GLX_1_3(dpy, __func__);
 879 #ifdef GLX_USE_APPLEGL
 880    XWindowAttributes xwattr;
 881    XVisualInfo *visinfo;
 882
 883    (void) attrib_list;          /*unused according to GLX 1.4 */
 884
 885    XGetWindowAttributes(dpy, win, &xwattr);
 886
 887    visinfo = glXGetVisualFromFBConfig(dpy, config);
 888
 889    if (NULL == visinfo) {
 890       __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateWindow, false);
 891       return None;
 892    }
 893
 894    if (visinfo->visualid != XVisualIDFromVisual(xwattr.visual)) {
 895       __glXSendError(dpy, BadMatch, 0, X_GLXCreateWindow, true);
 896       return None;
 897    }
 898
 899    XFree(visinfo);
 900
 901    return win;
 902 #else
 903    return CreateDrawable(dpy, (struct glx_config *) config,
 904                          (Drawable) win, attrib_list, X_GLXCreateWindow);
 905 #endif
 906 }
 907
 908
 909 _X_EXPORT void
 910 glXDestroyPixmap(Display * dpy, GLXPixmap pixmap)
 911 {
 912    WARN_ONCE_GLX_1_3(dpy, __func__);
 913 #ifdef GLX_USE_APPLEGL
 914    if (apple_glx_pixmap_destroy(dpy, pixmap))
 915       __glXSendError(dpy, GLXBadPixmap, pixmap, X_GLXDestroyPixmap, false);
 916 #else
 917    DestroyDrawable(dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap);
 918 #endif
 919 }
 920
 921
 922 _X_EXPORT void
 923 glXDestroyWindow(Display * dpy, GLXWindow win)
 924 {
 925    WARN_ONCE_GLX_1_3(dpy, __func__);
 926 #ifndef GLX_USE_APPLEGL
 927    DestroyDrawable(dpy, (GLXDrawable) win, X_GLXDestroyWindow);
 928 #endif
 929 }
 930
 931 #ifndef GLX_USE_APPLEGL
 932 _X_EXPORT
 933 GLX_ALIAS_VOID(glXDestroyGLXPbufferSGIX,
 934                (Display * dpy, GLXPbufferSGIX pbuf),
 935                (dpy, pbuf), glXDestroyPbuffer)
 936
 937 _X_EXPORT
 938 GLX_ALIAS_VOID(glXSelectEventSGIX,
 939                (Display * dpy, GLXDrawable drawable,
 940                 unsigned long mask), (dpy, drawable, mask), glXSelectEvent)
 941
 942 _X_EXPORT
 943 GLX_ALIAS_VOID(glXGetSelectedEventSGIX,
 944                (Display * dpy, GLXDrawable drawable,
 945                 unsigned long *mask), (dpy, drawable, mask),
 946                glXGetSelectedEvent)
 947 #endif