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 "xf86drm.h"
  42 #include "dri2.h"
  43 #include "glxclient.h"
  44 #include "GL/glxext.h"
  45
  46 /* Allow the build to work with an older versions of dri2proto.h and
  47  * dri2tokens.h.
  48  */
  49 #if DRI2_MINOR < 1
  50 #undef DRI2_MINOR
  51 #define DRI2_MINOR 1
  52 #define X_DRI2GetBuffersWithFormat 7
  53 #endif
  54
  55
  56 static char dri2ExtensionName[] = DRI2_NAME;
  57 static XExtensionInfo *dri2Info;
  58 static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
  59
  60 static Bool
  61 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
  62 static Status
  63 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
  64 static int
  65 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
  66
  67 static /* const */ XExtensionHooks dri2ExtensionHooks = {
  68   NULL,                   /* create_gc */
  69   NULL,                   /* copy_gc */
  70   NULL,                   /* flush_gc */
  71   NULL,                   /* free_gc */
  72   NULL,                   /* create_font */
  73   NULL,                   /* free_font */
  74   DRI2CloseDisplay,       /* close_display */
  75   DRI2WireToEvent,        /* wire_to_event */
  76   DRI2EventToWire,        /* event_to_wire */
  77   DRI2Error,              /* error */
  78   NULL,                   /* error_string */
  79 };
  80
  81 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
  82                                    dri2Info,
  83                                    dri2ExtensionName,
  84                                    &dri2ExtensionHooks,
  85                                    0, NULL)
  86
  87 static Bool
  88 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
  89 {
  90    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  91    struct glx_drawable *glxDraw;
  92
  93    XextCheckExtension(dpy, info, dri2ExtensionName, False);
  94
  95    switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
  96
  97 #ifdef X_DRI2SwapBuffers
  98    case DRI2_BufferSwapComplete:
  99    {
 100       GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
 101       xDRI2BufferSwapComplete2 *awire = (xDRI2BufferSwapComplete2 *)wire;
 102       __GLXDRIdrawable *pdraw;
 103
 104       pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, awire->drawable);
 105
 106       /* Ignore swap events if we're not looking for them */
 107       aevent->type = dri2GetSwapEventType(dpy, awire->drawable);
 108       if(!aevent->type)
 109          return False;
 110
 111       aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
 112       aevent->send_event = (awire->type & 0x80) != 0;
 113       aevent->display = dpy;
 114       aevent->drawable = awire->drawable;
 115       switch (awire->event_type) {
 116       case DRI2_EXCHANGE_COMPLETE:
 117          aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
 118          break;
 119       case DRI2_BLIT_COMPLETE:
 120          aevent->event_type = GLX_COPY_COMPLETE_INTEL;
 121          break;
 122       case DRI2_FLIP_COMPLETE:
 123          aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
 124          break;
 125       default:
 126          /* unknown swap completion type */
 127          return False;
 128       }
 129       aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
 130       aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
 131
 132       glxDraw = GetGLXDrawable(dpy, pdraw->drawable);
 133       if (awire->sbc < glxDraw->lastEventSbc)
 134          glxDraw->eventSbcWrap += 0x100000000;
 135       glxDraw->lastEventSbc = awire->sbc;
 136       aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
 137
 138       return True;
 139    }
 140 #endif
 141 #ifdef DRI2_InvalidateBuffers
 142    case DRI2_InvalidateBuffers:
 143    {
 144       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 145
 146       dri2InvalidateBuffers(dpy, awire->drawable);
 147       return False;
 148    }
 149 #endif
 150    default:
 151       /* client doesn't support server event */
 152       break;
 153    }
 154
 155    return False;
 156 }
 157
 158 /* We don't actually support this.  It doesn't make sense for clients to
 159  * send each other DRI2 events.
 160  */
 161 static Status
 162 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 163 {
 164    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 165
 166    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 167
 168    switch (event->type) {
 169    default:
 170       /* client doesn't support server event */
 171       break;
 172    }
 173
 174    return Success;
 175 }
 176
 177 static int
 178 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
 179 {
 180     if (err->majorCode == codes->major_opcode &&
 181         err->errorCode == BadDrawable &&
 182         err->minorCode == X_DRI2CopyRegion)
 183         return True;
 184
 185     /* If the X drawable was destroyed before the GLX drawable, the
 186      * DRI2 drawble will be gone by the time we call
 187      * DRI2DestroyDrawable.  So just ignore BadDrawable here. */
 188     if (err->majorCode == codes->major_opcode &&
 189         err->errorCode == BadDrawable &&
 190         err->minorCode == X_DRI2DestroyDrawable)
 191         return True;
 192
 193     /* If the server is non-local DRI2Connect will raise BadRequest.
 194      * Swallow this so that DRI2Connect can signal this in its return code */
 195     if (err->majorCode == codes->major_opcode &&
 196         err->minorCode == X_DRI2Connect &&
 197         err->errorCode == BadRequest) {
 198         *ret_code = False;
 199         return True;
 200     }
 201
 202     return False;
 203 }
 204
 205 Bool
 206 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 207 {
 208    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 209
 210    if (XextHasExtension(info)) {
 211       *eventBase = info->codes->first_event;
 212       *errorBase = info->codes->first_error;
 213       return True;
 214    }
 215
 216    return False;
 217 }
 218
 219 Bool
 220 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 221 {
 222    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 223    xDRI2QueryVersionReply rep;
 224    xDRI2QueryVersionReq *req;
 225    int i, nevents;
 226
 227    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 228
 229    LockDisplay(dpy);
 230    GetReq(DRI2QueryVersion, req);
 231    req->reqType = info->codes->major_opcode;
 232    req->dri2ReqType = X_DRI2QueryVersion;
 233    req->majorVersion = DRI2_MAJOR;
 234    req->minorVersion = DRI2_MINOR;
 235    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 236       UnlockDisplay(dpy);
 237       SyncHandle();
 238       return False;
 239    }
 240    *major = rep.majorVersion;
 241    *minor = rep.minorVersion;
 242    UnlockDisplay(dpy);
 243    SyncHandle();
 244
 245    switch (rep.minorVersion) {
 246    case 1:
 247            nevents = 0;
 248            break;
 249    case 2:
 250            nevents = 1;
 251            break;
 252    case 3:
 253    default:
 254            nevents = 2;
 255            break;
 256    }
 257
 258    for (i = 0; i < nevents; i++) {
 259        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 260        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 261    }
 262
 263    return True;
 264 }
 265
 266 Bool
 267 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 268 {
 269    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 270    xDRI2ConnectReply rep;
 271    xDRI2ConnectReq *req;
 272
 273    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 274
 275    LockDisplay(dpy);
 276    GetReq(DRI2Connect, req);
 277    req->reqType = info->codes->major_opcode;
 278    req->dri2ReqType = X_DRI2Connect;
 279    req->window = window;
 280
 281    req->driverType = DRI2DriverDRI;
 282 #ifdef DRI2DriverPrimeShift
 283    {
 284       char *prime = getenv("DRI_PRIME");
 285       if (prime) {
 286          uint32_t primeid;
 287          errno = 0;
 288          primeid = strtoul(prime, NULL, 0);
 289          if (errno == 0)
 290             req->driverType |=
 291                ((primeid & DRI2DriverPrimeMask) << DRI2DriverPrimeShift);
 292       }
 293    }
 294 #endif
 295
 296    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 297       UnlockDisplay(dpy);
 298       SyncHandle();
 299       return False;
 300    }
 301
 302    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 303       UnlockDisplay(dpy);
 304       SyncHandle();
 305       return False;
 306    }
 307
 308    *driverName = malloc(rep.driverNameLength + 1);
 309    if (*driverName == NULL) {
 310       _XEatData(dpy,
 311                 ((rep.driverNameLength + 3) & ~3) +
 312                 ((rep.deviceNameLength + 3) & ~3));
 313       UnlockDisplay(dpy);
 314       SyncHandle();
 315       return False;
 316    }
 317    _XReadPad(dpy, *driverName, rep.driverNameLength);
 318    (*driverName)[rep.driverNameLength] = '\0';
 319
 320    *deviceName = malloc(rep.deviceNameLength + 1);
 321    if (*deviceName == NULL) {
 322       free(*driverName);
 323       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 324       UnlockDisplay(dpy);
 325       SyncHandle();
 326       return False;
 327    }
 328    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 329    (*deviceName)[rep.deviceNameLength] = '\0';
 330
 331    UnlockDisplay(dpy);
 332    SyncHandle();
 333
 334    return True;
 335 }
 336
 337 Bool
 338 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 339 {
 340    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 341    xDRI2AuthenticateReq *req;
 342    xDRI2AuthenticateReply rep;
 343
 344    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 345
 346    LockDisplay(dpy);
 347    GetReq(DRI2Authenticate, req);
 348    req->reqType = info->codes->major_opcode;
 349    req->dri2ReqType = X_DRI2Authenticate;
 350    req->window = window;
 351    req->magic = magic;
 352
 353    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 354       UnlockDisplay(dpy);
 355       SyncHandle();
 356       return False;
 357    }
 358
 359    UnlockDisplay(dpy);
 360    SyncHandle();
 361
 362    return rep.authenticated;
 363 }
 364
 365 void
 366 DRI2CreateDrawable(Display * dpy, XID drawable)
 367 {
 368    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 369    xDRI2CreateDrawableReq *req;
 370
 371    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 372
 373    LockDisplay(dpy);
 374    GetReq(DRI2CreateDrawable, req);
 375    req->reqType = info->codes->major_opcode;
 376    req->dri2ReqType = X_DRI2CreateDrawable;
 377    req->drawable = drawable;
 378    UnlockDisplay(dpy);
 379    SyncHandle();
 380 }
 381
 382 void
 383 DRI2DestroyDrawable(Display * dpy, XID drawable)
 384 {
 385    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 386    xDRI2DestroyDrawableReq *req;
 387
 388    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 389
 390    XSync(dpy, False);
 391
 392    LockDisplay(dpy);
 393    GetReq(DRI2DestroyDrawable, req);
 394    req->reqType = info->codes->major_opcode;
 395    req->dri2ReqType = X_DRI2DestroyDrawable;
 396    req->drawable = drawable;
 397    UnlockDisplay(dpy);
 398    SyncHandle();
 399 }
 400
 401 DRI2Buffer *
 402 DRI2GetBuffers(Display * dpy, XID drawable,
 403                int *width, int *height,
 404                unsigned int *attachments, int count, int *outCount)
 405 {
 406    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 407    xDRI2GetBuffersReply rep;
 408    xDRI2GetBuffersReq *req;
 409    DRI2Buffer *buffers;
 410    xDRI2Buffer repBuffer;
 411    CARD32 *p;
 412    int i;
 413
 414    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 415
 416    LockDisplay(dpy);
 417    GetReqExtra(DRI2GetBuffers, count * 4, req);
 418    req->reqType = info->codes->major_opcode;
 419    req->dri2ReqType = X_DRI2GetBuffers;
 420    req->drawable = drawable;
 421    req->count = count;
 422    p = (CARD32 *) & req[1];
 423    for (i = 0; i < count; i++)
 424       p[i] = attachments[i];
 425
 426    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 427       UnlockDisplay(dpy);
 428       SyncHandle();
 429       return NULL;
 430    }
 431
 432    *width = rep.width;
 433    *height = rep.height;
 434    *outCount = rep.count;
 435
 436    buffers = malloc(rep.count * sizeof buffers[0]);
 437    if (buffers == NULL) {
 438       _XEatData(dpy, rep.count * sizeof repBuffer);
 439       UnlockDisplay(dpy);
 440       SyncHandle();
 441       return NULL;
 442    }
 443
 444    for (i = 0; i < rep.count; i++) {
 445       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 446       buffers[i].attachment = repBuffer.attachment;
 447       buffers[i].name = repBuffer.name;
 448       buffers[i].pitch = repBuffer.pitch;
 449       buffers[i].cpp = repBuffer.cpp;
 450       buffers[i].flags = repBuffer.flags;
 451    }
 452
 453    UnlockDisplay(dpy);
 454    SyncHandle();
 455
 456    return buffers;
 457 }
 458
 459
 460 DRI2Buffer *
 461 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 462                          int *width, int *height,
 463                          unsigned int *attachments, int count, int *outCount)
 464 {
 465    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 466    xDRI2GetBuffersReply rep;
 467    xDRI2GetBuffersReq *req;
 468    DRI2Buffer *buffers;
 469    xDRI2Buffer repBuffer;
 470    CARD32 *p;
 471    int i;
 472
 473    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 474
 475    LockDisplay(dpy);
 476    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 477    req->reqType = info->codes->major_opcode;
 478    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 479    req->drawable = drawable;
 480    req->count = count;
 481    p = (CARD32 *) & req[1];
 482    for (i = 0; i < (count * 2); i++)
 483       p[i] = attachments[i];
 484
 485    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 486       UnlockDisplay(dpy);
 487       SyncHandle();
 488       return NULL;
 489    }
 490
 491    *width = rep.width;
 492    *height = rep.height;
 493    *outCount = rep.count;
 494
 495    buffers = malloc(rep.count * sizeof buffers[0]);
 496    if (buffers == NULL) {
 497       _XEatData(dpy, rep.count * sizeof repBuffer);
 498       UnlockDisplay(dpy);
 499       SyncHandle();
 500       return NULL;
 501    }
 502
 503    for (i = 0; i < rep.count; i++) {
 504       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 505       buffers[i].attachment = repBuffer.attachment;
 506       buffers[i].name = repBuffer.name;
 507       buffers[i].pitch = repBuffer.pitch;
 508       buffers[i].cpp = repBuffer.cpp;
 509       buffers[i].flags = repBuffer.flags;
 510    }
 511
 512    UnlockDisplay(dpy);
 513    SyncHandle();
 514
 515    return buffers;
 516 }
 517
 518
 519 void
 520 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 521                CARD32 dest, CARD32 src)
 522 {
 523    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 524    xDRI2CopyRegionReq *req;
 525    xDRI2CopyRegionReply rep;
 526
 527    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 528
 529    LockDisplay(dpy);
 530    GetReq(DRI2CopyRegion, req);
 531    req->reqType = info->codes->major_opcode;
 532    req->dri2ReqType = X_DRI2CopyRegion;
 533    req->drawable = drawable;
 534    req->region = region;
 535    req->dest = dest;
 536    req->src = src;
 537
 538    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 539
 540    UnlockDisplay(dpy);
 541    SyncHandle();
 542 }
 543
 544 #endif /* GLX_DIRECT_RENDERING */