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 (awire->sbc < glxDraw->lastEventSbc)
 135          glxDraw->eventSbcWrap += 0x100000000;
 136       glxDraw->lastEventSbc = awire->sbc;
 137       aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
 138
 139       return True;
 140    }
 141 #endif
 142 #ifdef DRI2_InvalidateBuffers
 143    case DRI2_InvalidateBuffers:
 144    {
 145       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 146
 147       dri2InvalidateBuffers(dpy, awire->drawable);
 148       return False;
 149    }
 150 #endif
 151    default:
 152       /* client doesn't support server event */
 153       break;
 154    }
 155
 156    return False;
 157 }
 158
 159 /* We don't actually support this.  It doesn't make sense for clients to
 160  * send each other DRI2 events.
 161  */
 162 static Status
 163 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 164 {
 165    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 166
 167    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 168
 169    switch (event->type) {
 170    default:
 171       /* client doesn't support server event */
 172       break;
 173    }
 174
 175    return Success;
 176 }
 177
 178 static int
 179 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
 180 {
 181     if (err->majorCode == codes->major_opcode &&
 182         err->errorCode == BadDrawable &&
 183         err->minorCode == X_DRI2CopyRegion)
 184         return True;
 185
 186     /* If the X drawable was destroyed before the GLX drawable, the
 187      * DRI2 drawble will be gone by the time we call
 188      * DRI2DestroyDrawable.  So just ignore BadDrawable here. */
 189     if (err->majorCode == codes->major_opcode &&
 190         err->errorCode == BadDrawable &&
 191         err->minorCode == X_DRI2DestroyDrawable)
 192         return True;
 193
 194     /* If the server is non-local DRI2Connect will raise BadRequest.
 195      * Swallow this so that DRI2Connect can signal this in its return code */
 196     if (err->majorCode == codes->major_opcode &&
 197         err->minorCode == X_DRI2Connect &&
 198         err->errorCode == BadRequest) {
 199         *ret_code = False;
 200         return True;
 201     }
 202
 203     return False;
 204 }
 205
 206 Bool
 207 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 208 {
 209    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 210
 211    if (XextHasExtension(info)) {
 212       *eventBase = info->codes->first_event;
 213       *errorBase = info->codes->first_error;
 214       return True;
 215    }
 216
 217    return False;
 218 }
 219
 220 Bool
 221 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 222 {
 223    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 224    xDRI2QueryVersionReply rep;
 225    xDRI2QueryVersionReq *req;
 226    int i, nevents;
 227
 228    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 229
 230    LockDisplay(dpy);
 231    GetReq(DRI2QueryVersion, req);
 232    req->reqType = info->codes->major_opcode;
 233    req->dri2ReqType = X_DRI2QueryVersion;
 234    req->majorVersion = DRI2_MAJOR;
 235    req->minorVersion = DRI2_MINOR;
 236    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 237       UnlockDisplay(dpy);
 238       SyncHandle();
 239       return False;
 240    }
 241    *major = rep.majorVersion;
 242    *minor = rep.minorVersion;
 243    UnlockDisplay(dpy);
 244    SyncHandle();
 245
 246    switch (rep.minorVersion) {
 247    case 1:
 248            nevents = 0;
 249            break;
 250    case 2:
 251            nevents = 1;
 252            break;
 253    case 3:
 254    default:
 255            nevents = 2;
 256            break;
 257    }
 258
 259    for (i = 0; i < nevents; i++) {
 260        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 261        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 262    }
 263
 264    return True;
 265 }
 266
 267 Bool
 268 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 269 {
 270    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 271    xDRI2ConnectReply rep;
 272    xDRI2ConnectReq *req;
 273
 274    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 275
 276    LockDisplay(dpy);
 277    GetReq(DRI2Connect, req);
 278    req->reqType = info->codes->major_opcode;
 279    req->dri2ReqType = X_DRI2Connect;
 280    req->window = window;
 281
 282    req->driverType = DRI2DriverDRI;
 283 #ifdef DRI2DriverPrimeShift
 284    {
 285       char *prime = getenv("DRI_PRIME");
 286       if (prime) {
 287          uint32_t primeid;
 288          errno = 0;
 289          primeid = strtoul(prime, NULL, 0);
 290          if (errno == 0)
 291             req->driverType |=
 292                ((primeid & DRI2DriverPrimeMask) << DRI2DriverPrimeShift);
 293       }
 294    }
 295 #endif
 296
 297    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 298       UnlockDisplay(dpy);
 299       SyncHandle();
 300       return False;
 301    }
 302
 303    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 304       UnlockDisplay(dpy);
 305       SyncHandle();
 306       return False;
 307    }
 308
 309    *driverName = malloc(rep.driverNameLength + 1);
 310    if (*driverName == NULL) {
 311       _XEatData(dpy,
 312                 ((rep.driverNameLength + 3) & ~3) +
 313                 ((rep.deviceNameLength + 3) & ~3));
 314       UnlockDisplay(dpy);
 315       SyncHandle();
 316       return False;
 317    }
 318    _XReadPad(dpy, *driverName, rep.driverNameLength);
 319    (*driverName)[rep.driverNameLength] = '\0';
 320
 321    *deviceName = malloc(rep.deviceNameLength + 1);
 322    if (*deviceName == NULL) {
 323       free(*driverName);
 324       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 325       UnlockDisplay(dpy);
 326       SyncHandle();
 327       return False;
 328    }
 329    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 330    (*deviceName)[rep.deviceNameLength] = '\0';
 331
 332    UnlockDisplay(dpy);
 333    SyncHandle();
 334
 335    return True;
 336 }
 337
 338 Bool
 339 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 340 {
 341    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 342    xDRI2AuthenticateReq *req;
 343    xDRI2AuthenticateReply rep;
 344
 345    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 346
 347    LockDisplay(dpy);
 348    GetReq(DRI2Authenticate, req);
 349    req->reqType = info->codes->major_opcode;
 350    req->dri2ReqType = X_DRI2Authenticate;
 351    req->window = window;
 352    req->magic = magic;
 353
 354    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 355       UnlockDisplay(dpy);
 356       SyncHandle();
 357       return False;
 358    }
 359
 360    UnlockDisplay(dpy);
 361    SyncHandle();
 362
 363    return rep.authenticated;
 364 }
 365
 366 void
 367 DRI2CreateDrawable(Display * dpy, XID drawable)
 368 {
 369    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 370    xDRI2CreateDrawableReq *req;
 371
 372    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 373
 374    LockDisplay(dpy);
 375    GetReq(DRI2CreateDrawable, req);
 376    req->reqType = info->codes->major_opcode;
 377    req->dri2ReqType = X_DRI2CreateDrawable;
 378    req->drawable = drawable;
 379    UnlockDisplay(dpy);
 380    SyncHandle();
 381 }
 382
 383 void
 384 DRI2DestroyDrawable(Display * dpy, XID drawable)
 385 {
 386    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 387    xDRI2DestroyDrawableReq *req;
 388
 389    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 390
 391    XSync(dpy, False);
 392
 393    LockDisplay(dpy);
 394    GetReq(DRI2DestroyDrawable, req);
 395    req->reqType = info->codes->major_opcode;
 396    req->dri2ReqType = X_DRI2DestroyDrawable;
 397    req->drawable = drawable;
 398    UnlockDisplay(dpy);
 399    SyncHandle();
 400 }
 401
 402 DRI2Buffer *
 403 DRI2GetBuffers(Display * dpy, XID drawable,
 404                int *width, int *height,
 405                unsigned int *attachments, int count, int *outCount)
 406 {
 407    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 408    xDRI2GetBuffersReply rep;
 409    xDRI2GetBuffersReq *req;
 410    DRI2Buffer *buffers;
 411    xDRI2Buffer repBuffer;
 412    CARD32 *p;
 413    int i;
 414
 415    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 416
 417    LockDisplay(dpy);
 418    GetReqExtra(DRI2GetBuffers, count * 4, req);
 419    req->reqType = info->codes->major_opcode;
 420    req->dri2ReqType = X_DRI2GetBuffers;
 421    req->drawable = drawable;
 422    req->count = count;
 423    p = (CARD32 *) & req[1];
 424    for (i = 0; i < count; i++)
 425       p[i] = attachments[i];
 426
 427    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 428       UnlockDisplay(dpy);
 429       SyncHandle();
 430       return NULL;
 431    }
 432
 433    *width = rep.width;
 434    *height = rep.height;
 435    *outCount = rep.count;
 436
 437    buffers = malloc(rep.count * sizeof buffers[0]);
 438    if (buffers == NULL) {
 439       _XEatData(dpy, rep.count * sizeof repBuffer);
 440       UnlockDisplay(dpy);
 441       SyncHandle();
 442       return NULL;
 443    }
 444
 445    for (i = 0; i < rep.count; i++) {
 446       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 447       buffers[i].attachment = repBuffer.attachment;
 448       buffers[i].name = repBuffer.name;
 449       buffers[i].pitch = repBuffer.pitch;
 450       buffers[i].cpp = repBuffer.cpp;
 451       buffers[i].flags = repBuffer.flags;
 452    }
 453
 454    UnlockDisplay(dpy);
 455    SyncHandle();
 456
 457    return buffers;
 458 }
 459
 460
 461 DRI2Buffer *
 462 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 463                          int *width, int *height,
 464                          unsigned int *attachments, int count, int *outCount)
 465 {
 466    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 467    xDRI2GetBuffersReply rep;
 468    xDRI2GetBuffersReq *req;
 469    DRI2Buffer *buffers;
 470    xDRI2Buffer repBuffer;
 471    CARD32 *p;
 472    int i;
 473
 474    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 475
 476    LockDisplay(dpy);
 477    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 478    req->reqType = info->codes->major_opcode;
 479    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 480    req->drawable = drawable;
 481    req->count = count;
 482    p = (CARD32 *) & req[1];
 483    for (i = 0; i < (count * 2); i++)
 484       p[i] = attachments[i];
 485
 486    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 487       UnlockDisplay(dpy);
 488       SyncHandle();
 489       return NULL;
 490    }
 491
 492    *width = rep.width;
 493    *height = rep.height;
 494    *outCount = rep.count;
 495
 496    buffers = malloc(rep.count * sizeof buffers[0]);
 497    if (buffers == NULL) {
 498       _XEatData(dpy, rep.count * sizeof repBuffer);
 499       UnlockDisplay(dpy);
 500       SyncHandle();
 501       return NULL;
 502    }
 503
 504    for (i = 0; i < rep.count; i++) {
 505       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 506       buffers[i].attachment = repBuffer.attachment;
 507       buffers[i].name = repBuffer.name;
 508       buffers[i].pitch = repBuffer.pitch;
 509       buffers[i].cpp = repBuffer.cpp;
 510       buffers[i].flags = repBuffer.flags;
 511    }
 512
 513    UnlockDisplay(dpy);
 514    SyncHandle();
 515
 516    return buffers;
 517 }
 518
 519
 520 void
 521 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 522                CARD32 dest, CARD32 src)
 523 {
 524    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 525    xDRI2CopyRegionReq *req;
 526    xDRI2CopyRegionReply rep;
 527
 528    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 529
 530    LockDisplay(dpy);
 531    GetReq(DRI2CopyRegion, req);
 532    req->reqType = info->codes->major_opcode;
 533    req->dri2ReqType = X_DRI2CopyRegion;
 534    req->drawable = drawable;
 535    req->region = region;
 536    req->dest = dest;
 537    req->src = src;
 538
 539    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 540
 541    UnlockDisplay(dpy);
 542    SyncHandle();
 543 }
 544
 545 #endif /* GLX_DIRECT_RENDERING */