src/glx/dri2.c

   1 /*
   2  * Copyright © 2008 Red Hat, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Soft-
   6  * ware"), to deal in the Software without restriction, including without
   7  * limitation the rights to use, copy, modify, merge, publish, distribute,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, provided that the above copyright
  10  * notice(s) and this permission notice appear in all copies of the Soft-
  11  * ware and that both the above copyright notice(s) and this permission
  12  * notice appear in supporting documentation.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
  16  * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
  17  * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
  18  * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
  19  * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  20  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  21  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
  22  * MANCE OF THIS SOFTWARE.
  23  *
  24  * Except as contained in this notice, the name of a copyright holder shall
  25  * not be used in advertising or otherwise to promote the sale, use or
  26  * other dealings in this Software without prior written authorization of
  27  * the copyright holder.
  28  *
  29  * Authors:
  30  *   Kristian Høgsberg (krh@redhat.com)
  31  */
  32
  33
  34 #ifdef GLX_DIRECT_RENDERING
  35
  36 #include <stdio.h>
  37 #include <X11/Xlibint.h>
  38 #include <X11/extensions/Xext.h>
  39 #include <X11/extensions/extutil.h>
  40 #include <X11/extensions/dri2proto.h>
  41 #include "dri2.h"
  42 #include "glxclient.h"
  43 #include "GL/glxext.h"
  44
  45 /* Allow the build to work with an older versions of dri2proto.h and
  46  * dri2tokens.h.
  47  */
  48 #if DRI2_MINOR < 1
  49 #undef DRI2_MINOR
  50 #define DRI2_MINOR 1
  51 #define X_DRI2GetBuffersWithFormat 7
  52 #endif
  53
  54
  55 static char dri2ExtensionName[] = DRI2_NAME;
  56 static XExtensionInfo *dri2Info;
  57 static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
  58
  59 static Bool
  60 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
  61 static Status
  62 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
  63 static int
  64 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
  65
  66 static /* const */ XExtensionHooks dri2ExtensionHooks = {
  67   NULL,                   /* create_gc */
  68   NULL,                   /* copy_gc */
  69   NULL,                   /* flush_gc */
  70   NULL,                   /* free_gc */
  71   NULL,                   /* create_font */
  72   NULL,                   /* free_font */
  73   DRI2CloseDisplay,       /* close_display */
  74   DRI2WireToEvent,        /* wire_to_event */
  75   DRI2EventToWire,        /* event_to_wire */
  76   DRI2Error,              /* error */
  77   NULL,                   /* error_string */
  78 };
  79
  80 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
  81                                    dri2Info,
  82                                    dri2ExtensionName,
  83                                    &dri2ExtensionHooks,
  84                                    0, NULL)
  85
  86 static Bool
  87 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
  88 {
  89    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  90    struct glx_drawable *glxDraw;
  91
  92    XextCheckExtension(dpy, info, dri2ExtensionName, False);
  93
  94    switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
  95
  96 #ifdef X_DRI2SwapBuffers
  97    case DRI2_BufferSwapComplete:
  98    {
  99       GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
 100       xDRI2BufferSwapComplete2 *awire = (xDRI2BufferSwapComplete2 *)wire;
 101       __GLXDRIdrawable *pdraw;
 102
 103       pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, awire->drawable);
 104       if (pdraw == NULL)
 105          return False;
 106
 107       /* Ignore swap events if we're not looking for them */
 108       aevent->type = dri2GetSwapEventType(dpy, awire->drawable);
 109       if(!aevent->type)
 110          return False;
 111
 112       aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
 113       aevent->send_event = (awire->type & 0x80) != 0;
 114       aevent->display = dpy;
 115       aevent->drawable = awire->drawable;
 116       switch (awire->event_type) {
 117       case DRI2_EXCHANGE_COMPLETE:
 118          aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
 119          break;
 120       case DRI2_BLIT_COMPLETE:
 121          aevent->event_type = GLX_COPY_COMPLETE_INTEL;
 122          break;
 123       case DRI2_FLIP_COMPLETE:
 124          aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
 125          break;
 126       default:
 127          /* unknown swap completion type */
 128          return False;
 129       }
 130       aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
 131       aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
 132
 133       glxDraw = GetGLXDrawable(dpy, pdraw->drawable);
 134       if (glxDraw != NULL) {
 135          if (awire->sbc < glxDraw->lastEventSbc)
 136             glxDraw->eventSbcWrap += 0x100000000;
 137          glxDraw->lastEventSbc = awire->sbc;
 138          aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
 139       } else {
 140          aevent->sbc = awire->sbc;
 141       }
 142
 143       return True;
 144    }
 145 #endif
 146 #ifdef DRI2_InvalidateBuffers
 147    case DRI2_InvalidateBuffers:
 148    {
 149       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 150
 151       dri2InvalidateBuffers(dpy, awire->drawable);
 152       return False;
 153    }
 154 #endif
 155    default:
 156       /* client doesn't support server event */
 157       break;
 158    }
 159
 160    return False;
 161 }
 162
 163 /* We don't actually support this.  It doesn't make sense for clients to
 164  * send each other DRI2 events.
 165  */
 166 static Status
 167 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 168 {
 169    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 170
 171    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 172
 173    switch (event->type) {
 174    default:
 175       /* client doesn't support server event */
 176       break;
 177    }
 178
 179    return Success;
 180 }
 181
 182 static int
 183 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
 184 {
 185     if (err->majorCode == codes->major_opcode &&
 186         err->errorCode == BadDrawable &&
 187         err->minorCode == X_DRI2CopyRegion)
 188         return True;
 189
 190     /* If the X drawable was destroyed before the GLX drawable, the
 191      * DRI2 drawble will be gone by the time we call
 192      * DRI2DestroyDrawable.  So just ignore BadDrawable here. */
 193     if (err->majorCode == codes->major_opcode &&
 194         err->errorCode == BadDrawable &&
 195         err->minorCode == X_DRI2DestroyDrawable)
 196         return True;
 197
 198     /* If the server is non-local DRI2Connect will raise BadRequest.
 199      * Swallow this so that DRI2Connect can signal this in its return code */
 200     if (err->majorCode == codes->major_opcode &&
 201         err->minorCode == X_DRI2Connect &&
 202         err->errorCode == BadRequest) {
 203         *ret_code = False;
 204         return True;
 205     }
 206
 207     return False;
 208 }
 209
 210 Bool
 211 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 212 {
 213    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 214
 215    if (XextHasExtension(info)) {
 216       *eventBase = info->codes->first_event;
 217       *errorBase = info->codes->first_error;
 218       return True;
 219    }
 220
 221    return False;
 222 }
 223
 224 Bool
 225 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 226 {
 227    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 228    xDRI2QueryVersionReply rep;
 229    xDRI2QueryVersionReq *req;
 230    int i, nevents;
 231
 232    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 233
 234    LockDisplay(dpy);
 235    GetReq(DRI2QueryVersion, req);
 236    req->reqType = info->codes->major_opcode;
 237    req->dri2ReqType = X_DRI2QueryVersion;
 238    req->majorVersion = DRI2_MAJOR;
 239    req->minorVersion = DRI2_MINOR;
 240    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 241       UnlockDisplay(dpy);
 242       SyncHandle();
 243       return False;
 244    }
 245    *major = rep.majorVersion;
 246    *minor = rep.minorVersion;
 247    UnlockDisplay(dpy);
 248    SyncHandle();
 249
 250    switch (rep.minorVersion) {
 251    case 1:
 252            nevents = 0;
 253            break;
 254    case 2:
 255            nevents = 1;
 256            break;
 257    case 3:
 258    default:
 259            nevents = 2;
 260            break;
 261    }
 262
 263    for (i = 0; i < nevents; i++) {
 264        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 265        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 266    }
 267
 268    return True;
 269 }
 270
 271 Bool
 272 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 273 {
 274    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 275    xDRI2ConnectReply rep;
 276    xDRI2ConnectReq *req;
 277
 278    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 279
 280    LockDisplay(dpy);
 281    GetReq(DRI2Connect, req);
 282    req->reqType = info->codes->major_opcode;
 283    req->dri2ReqType = X_DRI2Connect;
 284    req->window = window;
 285
 286    req->driverType = DRI2DriverDRI;
 287 #ifdef DRI2DriverPrimeShift
 288    {
 289       char *prime = getenv("DRI_PRIME");
 290       if (prime) {
 291          uint32_t primeid;
 292          errno = 0;
 293          primeid = strtoul(prime, NULL, 0);
 294          if (errno == 0)
 295             req->driverType |=
 296                ((primeid & DRI2DriverPrimeMask) << DRI2DriverPrimeShift);
 297       }
 298    }
 299 #endif
 300
 301    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 302       UnlockDisplay(dpy);
 303       SyncHandle();
 304       return False;
 305    }
 306
 307    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 308       UnlockDisplay(dpy);
 309       SyncHandle();
 310       return False;
 311    }
 312
 313    *driverName = malloc(rep.driverNameLength + 1);
 314    if (*driverName == NULL) {
 315       _XEatData(dpy,
 316                 ((rep.driverNameLength + 3) & ~3) +
 317                 ((rep.deviceNameLength + 3) & ~3));
 318       UnlockDisplay(dpy);
 319       SyncHandle();
 320       return False;
 321    }
 322    _XReadPad(dpy, *driverName, rep.driverNameLength);
 323    (*driverName)[rep.driverNameLength] = '\0';
 324
 325    *deviceName = malloc(rep.deviceNameLength + 1);
 326    if (*deviceName == NULL) {
 327       free(*driverName);
 328       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 329       UnlockDisplay(dpy);
 330       SyncHandle();
 331       return False;
 332    }
 333    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 334    (*deviceName)[rep.deviceNameLength] = '\0';
 335
 336    UnlockDisplay(dpy);
 337    SyncHandle();
 338
 339    return True;
 340 }
 341
 342 Bool
 343 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 344 {
 345    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 346    xDRI2AuthenticateReq *req;
 347    xDRI2AuthenticateReply rep;
 348
 349    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 350
 351    LockDisplay(dpy);
 352    GetReq(DRI2Authenticate, req);
 353    req->reqType = info->codes->major_opcode;
 354    req->dri2ReqType = X_DRI2Authenticate;
 355    req->window = window;
 356    req->magic = magic;
 357
 358    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 359       UnlockDisplay(dpy);
 360       SyncHandle();
 361       return False;
 362    }
 363
 364    UnlockDisplay(dpy);
 365    SyncHandle();
 366
 367    return rep.authenticated;
 368 }
 369
 370 void
 371 DRI2CreateDrawable(Display * dpy, XID drawable)
 372 {
 373    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 374    xDRI2CreateDrawableReq *req;
 375
 376    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 377
 378    LockDisplay(dpy);
 379    GetReq(DRI2CreateDrawable, req);
 380    req->reqType = info->codes->major_opcode;
 381    req->dri2ReqType = X_DRI2CreateDrawable;
 382    req->drawable = drawable;
 383    UnlockDisplay(dpy);
 384    SyncHandle();
 385 }
 386
 387 void
 388 DRI2DestroyDrawable(Display * dpy, XID drawable)
 389 {
 390    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 391    xDRI2DestroyDrawableReq *req;
 392
 393    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 394
 395    XSync(dpy, False);
 396
 397    LockDisplay(dpy);
 398    GetReq(DRI2DestroyDrawable, req);
 399    req->reqType = info->codes->major_opcode;
 400    req->dri2ReqType = X_DRI2DestroyDrawable;
 401    req->drawable = drawable;
 402    UnlockDisplay(dpy);
 403    SyncHandle();
 404 }
 405
 406 DRI2Buffer *
 407 DRI2GetBuffers(Display * dpy, XID drawable,
 408                int *width, int *height,
 409                unsigned int *attachments, int count, int *outCount)
 410 {
 411    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 412    xDRI2GetBuffersReply rep;
 413    xDRI2GetBuffersReq *req;
 414    DRI2Buffer *buffers;
 415    xDRI2Buffer repBuffer;
 416    CARD32 *p;
 417    int i;
 418
 419    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 420
 421    LockDisplay(dpy);
 422    GetReqExtra(DRI2GetBuffers, count * 4, req);
 423    req->reqType = info->codes->major_opcode;
 424    req->dri2ReqType = X_DRI2GetBuffers;
 425    req->drawable = drawable;
 426    req->count = count;
 427    p = (CARD32 *) & req[1];
 428    for (i = 0; i < count; i++)
 429       p[i] = attachments[i];
 430
 431    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 432       UnlockDisplay(dpy);
 433       SyncHandle();
 434       return NULL;
 435    }
 436
 437    *width = rep.width;
 438    *height = rep.height;
 439    *outCount = rep.count;
 440
 441    buffers = malloc(rep.count * sizeof buffers[0]);
 442    if (buffers == NULL) {
 443       _XEatData(dpy, rep.count * sizeof repBuffer);
 444       UnlockDisplay(dpy);
 445       SyncHandle();
 446       return NULL;
 447    }
 448
 449    for (i = 0; i < rep.count; i++) {
 450       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 451       buffers[i].attachment = repBuffer.attachment;
 452       buffers[i].name = repBuffer.name;
 453       buffers[i].pitch = repBuffer.pitch;
 454       buffers[i].cpp = repBuffer.cpp;
 455       buffers[i].flags = repBuffer.flags;
 456    }
 457
 458    UnlockDisplay(dpy);
 459    SyncHandle();
 460
 461    return buffers;
 462 }
 463
 464
 465 DRI2Buffer *
 466 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 467                          int *width, int *height,
 468                          unsigned int *attachments, int count, int *outCount)
 469 {
 470    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 471    xDRI2GetBuffersReply rep;
 472    xDRI2GetBuffersReq *req;
 473    DRI2Buffer *buffers;
 474    xDRI2Buffer repBuffer;
 475    CARD32 *p;
 476    int i;
 477
 478    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 479
 480    LockDisplay(dpy);
 481    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 482    req->reqType = info->codes->major_opcode;
 483    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 484    req->drawable = drawable;
 485    req->count = count;
 486    p = (CARD32 *) & req[1];
 487    for (i = 0; i < (count * 2); i++)
 488       p[i] = attachments[i];
 489
 490    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 491       UnlockDisplay(dpy);
 492       SyncHandle();
 493       return NULL;
 494    }
 495
 496    *width = rep.width;
 497    *height = rep.height;
 498    *outCount = rep.count;
 499
 500    buffers = malloc(rep.count * sizeof buffers[0]);
 501    if (buffers == NULL) {
 502       _XEatData(dpy, rep.count * sizeof repBuffer);
 503       UnlockDisplay(dpy);
 504       SyncHandle();
 505       return NULL;
 506    }
 507
 508    for (i = 0; i < rep.count; i++) {
 509       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 510       buffers[i].attachment = repBuffer.attachment;
 511       buffers[i].name = repBuffer.name;
 512       buffers[i].pitch = repBuffer.pitch;
 513       buffers[i].cpp = repBuffer.cpp;
 514       buffers[i].flags = repBuffer.flags;
 515    }
 516
 517    UnlockDisplay(dpy);
 518    SyncHandle();
 519
 520    return buffers;
 521 }
 522
 523
 524 void
 525 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 526                CARD32 dest, CARD32 src)
 527 {
 528    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 529    xDRI2CopyRegionReq *req;
 530    xDRI2CopyRegionReply rep;
 531
 532    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 533
 534    LockDisplay(dpy);
 535    GetReq(DRI2CopyRegion, req);
 536    req->reqType = info->codes->major_opcode;
 537    req->dri2ReqType = X_DRI2CopyRegion;
 538    req->drawable = drawable;
 539    req->region = region;
 540    req->dest = dest;
 541    req->src = src;
 542
 543    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 544
 545    UnlockDisplay(dpy);
 546    SyncHandle();
 547 }
 548
 549 #endif /* GLX_DIRECT_RENDERING */