src/mesa/drivers/dri/i965/intel_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "glheader.h"
  30 #include "context.h"
  31 #include "matrix.h"
  32 #include "simple_list.h"
  33 #include "extensions.h"
  34 #include "framebuffer.h"
  35 #include "imports.h"
  36
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "array_cache/acache.h"
  41
  42 #include "tnl/t_pipeline.h"
  43 #include "tnl/t_vertex.h"
  44
  45 #include "drivers/common/driverfuncs.h"
  46
  47 #include "intel_screen.h"
  48
  49 #include "i830_dri.h"
  50 #include "i830_common.h"
  51
  52 #include "intel_tex.h"
  53 #include "intel_span.h"
  54 #include "intel_ioctl.h"
  55 #include "intel_batchbuffer.h"
  56 #include "intel_blit.h"
  57 #include "intel_regions.h"
  58 #include "intel_buffer_objects.h"
  59
  60 #include "bufmgr.h"
  61
  62 #include "utils.h"
  63 #ifndef INTEL_DEBUG
  64 int INTEL_DEBUG = (0);
  65 #endif
  66
  67 #define need_GL_ARB_multisample
  68 #define need_GL_ARB_point_parameters
  69 #define need_GL_ARB_texture_compression
  70 #define need_GL_ARB_vertex_buffer_object
  71 #define need_GL_ARB_vertex_program
  72 #define need_GL_ARB_window_pos
  73 #define need_GL_EXT_blend_color
  74 #define need_GL_EXT_blend_equation_separate
  75 #define need_GL_EXT_blend_func_separate
  76 #define need_GL_EXT_blend_minmax
  77 #define need_GL_EXT_cull_vertex
  78 #define need_GL_EXT_fog_coord
  79 #define need_GL_EXT_multi_draw_arrays
  80 #define need_GL_EXT_secondary_color
  81 #define need_GL_NV_vertex_program
  82 #include "extension_helper.h"
  83
  84 #ifndef VERBOSE
  85 int VERBOSE = 0;
  86 #endif
  87
  88 #if DEBUG_LOCKING
  89 char *prevLockFile;
  90 int prevLockLine;
  91 #endif
  92
  93 /***************************************
  94  * Mesa's Driver Functions
  95  ***************************************/
  96
  97 #define DRIVER_VERSION                     "4.1.3002"
  98
  99 static const GLubyte *intelGetString( GLcontext *ctx, GLenum name )
 100 {
 101    const char * chipset;
 102    static char buffer[128];
 103
 104    switch (name) {
 105    case GL_VENDOR:
 106       return (GLubyte *)"Tungsten Graphics, Inc";
 107       break;
 108
 109    case GL_RENDERER:
 110       switch (intel_context(ctx)->intelScreen->deviceID) {
 111       case PCI_CHIP_I965_Q:
 112          chipset = "Intel(R) 965Q"; break;
 113          break;
 114       case PCI_CHIP_I965_G:
 115       case PCI_CHIP_I965_G_1:
 116          chipset = "Intel(R) 965G"; break;
 117          break;
 118       case PCI_CHIP_I946_GZ:
 119          chipset = "Intel(R) 946GZ"; break;
 120          break;
 121       default:
 122          chipset = "Unknown Intel Chipset"; break;
 123       }
 124
 125       (void) driGetRendererString( buffer, chipset, DRIVER_VERSION, 0 );
 126       return (GLubyte *) buffer;
 127
 128    default:
 129       return NULL;
 130    }
 131 }
 132
 133
 134 /**
 135  * Extension strings exported by the intel driver.
 136  *
 137  * \note
 138  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 139  * old i830-specific driver.
 140  */
 141 const struct dri_extension card_extensions[] =
 142 {
 143     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 144     { "GL_ARB_multitexture",               NULL },
 145     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 146     { "GL_ARB_texture_border_clamp",       NULL },
 147     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 148     { "GL_ARB_texture_cube_map",           NULL },
 149     { "GL_ARB_texture_env_add",            NULL },
 150     { "GL_ARB_texture_env_combine",        NULL },
 151     { "GL_ARB_texture_env_dot3",           NULL },
 152     { "GL_ARB_texture_mirrored_repeat",    NULL },
 153     { "GL_ARB_texture_rectangle",          NULL },
 154     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 155     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 156     { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
 157     { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
 158     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 159     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 160     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 161     { "GL_EXT_blend_logic_op",             NULL },
 162     { "GL_EXT_blend_subtract",             NULL },
 163     { "GL_EXT_cull_vertex",                GL_EXT_cull_vertex_functions },
 164     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 165     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 166     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 167     { "GL_EXT_stencil_wrap",               NULL },
 168     { "GL_EXT_texture_edge_clamp",         NULL },
 169     { "GL_EXT_texture_env_combine",        NULL },
 170     { "GL_EXT_texture_env_dot3",           NULL },
 171     { "GL_EXT_texture_filter_anisotropic", NULL },
 172     { "GL_EXT_texture_lod_bias",           NULL },
 173     { "GL_3DFX_texture_compression_FXT1",  NULL },
 174     { "GL_APPLE_client_storage",           NULL },
 175     { "GL_MESA_pack_invert",               NULL },
 176     { "GL_MESA_ycbcr_texture",             NULL },
 177     { "GL_NV_blend_square",                NULL },
 178     { "GL_NV_vertex_program",              GL_NV_vertex_program_functions },
 179     { "GL_NV_vertex_program1_1",           NULL },
 180     { "GL_SGIS_generate_mipmap",           NULL },
 181     { NULL,                                NULL }
 182 };
 183
 184
 185
 186 static const struct dri_debug_control debug_control[] =
 187 {
 188     { "fall",  DEBUG_FALLBACKS },
 189     { "tex",   DEBUG_TEXTURE },
 190     { "ioctl", DEBUG_IOCTL },
 191     { "prim",  DEBUG_PRIMS },
 192     { "vert",  DEBUG_VERTS },
 193     { "state", DEBUG_STATE },
 194     { "verb",  DEBUG_VERBOSE },
 195     { "dri",   DEBUG_DRI },
 196     { "dma",   DEBUG_DMA },
 197     { "san",   DEBUG_SANITY },
 198     { "sync",  DEBUG_SYNC },
 199     { "sleep", DEBUG_SLEEP },
 200     { "pix",   DEBUG_PIXEL },
 201     { "buf",   DEBUG_BUFMGR },
 202     { "stats", DEBUG_STATS },
 203     { "tile",  DEBUG_TILE },
 204     { "sing",  DEBUG_SINGLE_THREAD },
 205     { "thre",  DEBUG_SINGLE_THREAD },
 206     { "wm",    DEBUG_WM },
 207     { NULL,    0 }
 208 };
 209
 210
 211 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 212 {
 213    struct intel_context *intel = intel_context(ctx);
 214
 215    _swrast_InvalidateState( ctx, new_state );
 216    _swsetup_InvalidateState( ctx, new_state );
 217    _ac_InvalidateState( ctx, new_state );
 218    _tnl_InvalidateState( ctx, new_state );
 219    _tnl_invalidate_vertex_state( ctx, new_state );
 220
 221    intel->NewGLState |= new_state;
 222
 223    if (intel->vtbl.invalidate_state)
 224       intel->vtbl.invalidate_state( intel, new_state );
 225 }
 226
 227
 228 void intelFlush( GLcontext *ctx )
 229 {
 230    struct intel_context *intel = intel_context( ctx );
 231
 232    bmLockAndFence(intel);
 233 }
 234
 235 void intelFinish( GLcontext *ctx )
 236 {
 237    struct intel_context *intel = intel_context( ctx );
 238
 239    bmFinishFence(intel, bmLockAndFence(intel));
 240 }
 241
 242
 243 void intelInitDriverFunctions( struct dd_function_table *functions )
 244 {
 245    _mesa_init_driver_functions( functions );
 246
 247    functions->Flush = intelFlush;
 248    functions->Finish = intelFinish;
 249    functions->GetString = intelGetString;
 250    functions->UpdateState = intelInvalidateState;
 251    functions->CopyColorTable = _swrast_CopyColorTable;
 252    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 253    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 254    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 255
 256    /* Pixel path fallbacks.
 257     */
 258    functions->Accum = _swrast_Accum;
 259    functions->Bitmap = _swrast_Bitmap;
 260    functions->CopyPixels = _swrast_CopyPixels;
 261    functions->ReadPixels = _swrast_ReadPixels;
 262    functions->DrawPixels = _swrast_DrawPixels;
 263
 264    intelInitTextureFuncs( functions );
 265    intelInitStateFuncs( functions );
 266    intelInitBufferFuncs( functions );
 267 }
 268
 269
 270
 271 GLboolean intelInitContext( struct intel_context *intel,
 272                             const __GLcontextModes *mesaVis,
 273                             __DRIcontextPrivate *driContextPriv,
 274                             void *sharedContextPrivate,
 275                             struct dd_function_table *functions )
 276 {
 277    GLcontext *ctx = &intel->ctx;
 278    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 279    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 280    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 281    volatile drmI830Sarea *saPriv = (volatile drmI830Sarea *)
 282       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 283
 284    if (!_mesa_initialize_context(&intel->ctx,
 285                                  mesaVis, shareCtx,
 286                                  functions,
 287                                  (void*) intel)) {
 288       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 289       return GL_FALSE;
 290    }
 291
 292    driContextPriv->driverPrivate = intel;
 293    intel->intelScreen = intelScreen;
 294    intel->driScreen = sPriv;
 295    intel->sarea = saPriv;
 296
 297
 298    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 299
 300    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 301       intel->strict_conformance = 1;
 302    }
 303
 304    if (intel->strict_conformance) {
 305       ctx->Const.MinLineWidth = 1.0;
 306       ctx->Const.MinLineWidthAA = 1.0;
 307       ctx->Const.MaxLineWidth = 1.0;
 308       ctx->Const.MaxLineWidthAA = 1.0;
 309       ctx->Const.LineWidthGranularity = 1.0;
 310    }
 311    else {
 312       ctx->Const.MinLineWidth = 1.0;
 313       ctx->Const.MinLineWidthAA = 1.0;
 314       ctx->Const.MaxLineWidth = 5.0;
 315       ctx->Const.MaxLineWidthAA = 5.0;
 316       ctx->Const.LineWidthGranularity = 0.5;
 317    }
 318
 319    ctx->Const.MinPointSize = 1.0;
 320    ctx->Const.MinPointSizeAA = 1.0;
 321    ctx->Const.MaxPointSize = 255.0;
 322    ctx->Const.MaxPointSizeAA = 3.0;
 323    ctx->Const.PointSizeGranularity = 1.0;
 324
 325    /* Initialize the software rasterizer and helper modules. */
 326    _swrast_CreateContext( ctx );
 327    _ac_CreateContext( ctx );
 328    _tnl_CreateContext( ctx );
 329    _swsetup_CreateContext( ctx );
 330
 331    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 332
 333    /* Configure swrast to match hardware characteristics: */
 334    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 335    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 336
 337    /* Dri stuff */
 338    intel->hHWContext = driContextPriv->hHWContext;
 339    intel->driFd = sPriv->fd;
 340    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 341
 342    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 343    intel->hw_stipple = 1;
 344
 345    switch(mesaVis->depthBits) {
 346    case 0:                      /* what to do in this case? */
 347    case 16:
 348       intel->depth_scale = 1.0/0xffff;
 349       intel->polygon_offset_scale = 1.0/0xffff;
 350       intel->depth_clear_mask = ~0;
 351       intel->ClearDepth = 0xffff;
 352       break;
 353    case 24:
 354       intel->depth_scale = 1.0/0xffffff;
 355       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 356       intel->depth_clear_mask = 0x00ffffff;
 357       intel->stencil_clear_mask = 0xff000000;
 358       intel->ClearDepth = 0x00ffffff;
 359       break;
 360    default:
 361       assert(0);
 362       break;
 363    }
 364
 365    /* Initialize swrast, tnl driver tables: */
 366    intelInitSpanFuncs( ctx );
 367
 368    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 369
 370    if (!intel->intelScreen->irq_active) {
 371       _mesa_printf("IRQs not active.  Exiting\n");
 372       exit(1);
 373    }
 374
 375    _math_matrix_ctr (&intel->ViewportMatrix);
 376
 377    driInitExtensions( ctx, card_extensions,
 378                       GL_TRUE );
 379
 380    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 381                                        debug_control );
 382
 383
 384    /* Buffer manager:
 385     */
 386    intel->bm = bm_fake_intel_Attach( intel );
 387
 388
 389    bmInitPool(intel,
 390               intel->intelScreen->tex.offset, /* low offset */
 391               intel->intelScreen->tex.map, /* low virtual */
 392               intel->intelScreen->tex.size,
 393               BM_MEM_AGP);
 394
 395    /* These are still static, but create regions for them.
 396     */
 397    intel->front_region =
 398       intel_region_create_static(intel,
 399                                  BM_MEM_AGP,
 400                                  intelScreen->front.offset,
 401                                  intelScreen->front.map,
 402                                  intelScreen->cpp,
 403                                  intelScreen->front.pitch / intelScreen->cpp,
 404                                  intelScreen->height,
 405                                  GL_FALSE);
 406
 407
 408    intel->back_region =
 409       intel_region_create_static(intel,
 410                                  BM_MEM_AGP,
 411                                  intelScreen->back.offset,
 412                                  intelScreen->back.map,
 413                                  intelScreen->cpp,
 414                                  intelScreen->back.pitch / intelScreen->cpp,
 415                                  intelScreen->height,
 416                                  (INTEL_DEBUG & DEBUG_TILE) ? 0 : 1);
 417
 418    /* Still assuming front.cpp == depth.cpp
 419     *
 420     * XXX: Setting tiling to false because Depth tiling only supports
 421     * YMAJOR but the blitter only supports XMAJOR tiling.  Have to
 422     * resolve later.
 423     */
 424    intel->depth_region =
 425       intel_region_create_static(intel,
 426                                  BM_MEM_AGP,
 427                                  intelScreen->depth.offset,
 428                                  intelScreen->depth.map,
 429                                  intelScreen->cpp,
 430                                  intelScreen->depth.pitch / intelScreen->cpp,
 431                                  intelScreen->height,
 432                                  (INTEL_DEBUG & DEBUG_TILE) ? 0 : 1);
 433
 434    intel_bufferobj_init( intel );
 435    intel->batch = intel_batchbuffer_alloc( intel );
 436
 437    if (intel->ctx.Mesa_DXTn) {
 438       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 439       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 440    }
 441    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 442       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 443    }
 444
 445 /*    driInitTextureObjects( ctx, & intel->swapped, */
 446 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 447 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 448 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 449
 450
 451    intel->prim.primitive = ~0;
 452
 453    if (getenv("INTEL_NO_RAST")) {
 454       fprintf(stderr, "disabling 3D rasterization\n");
 455       intel->no_rast = 1;
 456    }
 457
 458
 459    return GL_TRUE;
 460 }
 461
 462 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 463 {
 464    struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 465
 466    assert(intel); /* should never be null */
 467    if (intel) {
 468       GLboolean   release_texture_heaps;
 469
 470
 471       intel->vtbl.destroy( intel );
 472
 473       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 474       _swsetup_DestroyContext (&intel->ctx);
 475       _tnl_DestroyContext (&intel->ctx);
 476       _ac_DestroyContext (&intel->ctx);
 477
 478       _swrast_DestroyContext (&intel->ctx);
 479       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 480       intel_batchbuffer_free(intel->batch);
 481       intel->batch = NULL;
 482
 483
 484       if ( release_texture_heaps ) {
 485          /* This share group is about to go away, free our private
 486           * texture object data.
 487           */
 488
 489          /* XXX: destroy the shared bufmgr struct here?
 490           */
 491       }
 492
 493       /* Free the regions created to describe front/back/depth
 494        * buffers:
 495        */
 496 #if 0
 497       intel_region_release(intel, &intel->front_region);
 498       intel_region_release(intel, &intel->back_region);
 499       intel_region_release(intel, &intel->depth_region);
 500       intel_region_release(intel, &intel->draw_region);
 501 #endif
 502
 503       /* free the Mesa context */
 504       _mesa_destroy_context(&intel->ctx);
 505    }
 506
 507    driContextPriv->driverPrivate = NULL;
 508 }
 509
 510 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 511 {
 512    return GL_TRUE;
 513 }
 514
 515 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 516                           __DRIdrawablePrivate *driDrawPriv,
 517                           __DRIdrawablePrivate *driReadPriv)
 518 {
 519
 520    if (driContextPriv) {
 521       struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 522
 523       if ( intel->driDrawable != driDrawPriv ) {
 524          /* Shouldn't the readbuffer be stored also? */
 525          intel->driDrawable = driDrawPriv;
 526          intelWindowMoved( intel );
 527       }
 528
 529       _mesa_make_current(&intel->ctx,
 530                          (GLframebuffer *) driDrawPriv->driverPrivate,
 531                          (GLframebuffer *) driReadPriv->driverPrivate);
 532
 533       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 534    } else {
 535       _mesa_make_current(NULL, NULL, NULL);
 536    }
 537
 538    return GL_TRUE;
 539 }
 540
 541 static void intelContendedLock( struct intel_context *intel, GLuint flags )
 542 {
 543    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 544    __DRIscreenPrivate *sPriv = intel->driScreen;
 545    volatile drmI830Sarea * sarea = intel->sarea;
 546    int me = intel->hHWContext;
 547
 548    drmGetLock(intel->driFd, intel->hHWContext, flags);
 549
 550    /* If the window moved, may need to set a new cliprect now.
 551     *
 552     * NOTE: This releases and regains the hw lock, so all state
 553     * checking must be done *after* this call:
 554     */
 555    if (dPriv)
 556       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 557
 558
 559    intel->locked = 1;
 560
 561    /* Lost context?
 562     */
 563    if (sarea->ctxOwner != me) {
 564       intel->perf_boxes |= I830_BOX_LOST_CONTEXT;
 565       sarea->ctxOwner = me;
 566
 567       /* Should also fence the frontbuffer even if ctxOwner doesn't
 568        * change:
 569        */
 570       bm_fake_NotifyContendedLockTake( intel );
 571
 572
 573       /*
 574        */
 575       intel->vtbl.lost_hardware( intel );
 576    }
 577
 578    /* Because the X server issues drawing commands without properly
 579     * fencing them, we need to be paraniod about waiting for hardware
 580     * rendering to finish after a contended lock.
 581     */
 582    intel->flushBeforeFallback = GL_TRUE;
 583
 584    /* Drawable changed?
 585     */
 586    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 587       intelWindowMoved( intel );
 588       intel->lastStamp = dPriv->lastStamp;
 589
 590       /* This works because the lock is always grabbed before emitting
 591        * commands and commands are always flushed prior to releasing
 592        * the lock.
 593        */
 594       intel->NewGLState |= _NEW_WINDOW_POS;
 595    }
 596 }
 597
 598 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 599
 600 /* Lock the hardware and validate our state.
 601  */
 602 void LOCK_HARDWARE( struct intel_context *intel )
 603 {
 604     char __ret=0;
 605
 606     _glthread_LOCK_MUTEX(lockMutex);
 607     assert(!intel->locked);
 608
 609
 610     DRM_CAS(intel->driHwLock, intel->hHWContext,
 611             (DRM_LOCK_HELD|intel->hHWContext), __ret);
 612     if (__ret)
 613         intelContendedLock( intel, 0 );
 614
 615    intel->locked = 1;
 616
 617    if (intel->aub_wrap) {
 618       /* Should also fence the frontbuffer even if ctxOwner doesn't
 619        * change:
 620        */
 621       bm_fake_NotifyContendedLockTake( intel );
 622
 623       /*
 624        */
 625       intel->vtbl.lost_hardware( intel );
 626       intel->vtbl.aub_wrap(intel);
 627
 628       intel->aub_wrap = 0;
 629    }
 630
 631
 632    /* Make sure nothing has been emitted prior to getting the lock:
 633     */
 634    assert(intel->batch->map == 0);
 635
 636    /* XXX: postpone, may not be needed:
 637     */
 638    intel_batchbuffer_map(intel->batch);
 639 }
 640
 641
 642 /* Unlock the hardware using the global current context
 643  */
 644 void UNLOCK_HARDWARE( struct intel_context *intel )
 645 {
 646    /* Make sure everything has been released:
 647     */
 648    assert(intel->batch->ptr == intel->batch->map + intel->batch->offset);
 649
 650    intel_batchbuffer_unmap(intel->batch);
 651    intel->vtbl.note_unlock( intel );
 652    intel->locked = 0;
 653
 654
 655
 656    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 657    _glthread_UNLOCK_MUTEX(lockMutex);
 658 }
 659