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_ARB_occlusion_query
  74 #define need_GL_EXT_blend_color
  75 #define need_GL_EXT_blend_equation_separate
  76 #define need_GL_EXT_blend_func_separate
  77 #define need_GL_EXT_blend_minmax
  78 #define need_GL_EXT_cull_vertex
  79 #define need_GL_EXT_fog_coord
  80 #define need_GL_EXT_multi_draw_arrays
  81 #define need_GL_EXT_secondary_color
  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       case PCI_CHIP_CRESTLINE:
 122          chipset = "Intel(R) Crestline"; break;
 123          break;
 124       default:
 125          chipset = "Unknown Intel Chipset"; break;
 126       }
 127
 128       (void) driGetRendererString( buffer, chipset, DRIVER_VERSION, 0 );
 129       return (GLubyte *) buffer;
 130
 131    default:
 132       return NULL;
 133    }
 134 }
 135
 136
 137 /**
 138  * Extension strings exported by the intel driver.
 139  *
 140  * \note
 141  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 142  * old i830-specific driver.
 143  */
 144 const struct dri_extension card_extensions[] =
 145 {
 146     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 147     { "GL_ARB_multitexture",               NULL },
 148     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 149     { "GL_ARB_texture_border_clamp",       NULL },
 150     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 151     { "GL_ARB_texture_cube_map",           NULL },
 152     { "GL_ARB_texture_env_add",            NULL },
 153     { "GL_ARB_texture_env_combine",        NULL },
 154     { "GL_ARB_texture_env_dot3",           NULL },
 155     { "GL_ARB_texture_mirrored_repeat",    NULL },
 156     { "GL_ARB_texture_non_power_of_two",   NULL },
 157     { "GL_ARB_texture_rectangle",          NULL },
 158     { "GL_NV_texture_rectangle",           NULL },
 159     { "GL_EXT_texture_rectangle",          NULL },
 160     { "GL_ARB_texture_rectangle",          NULL },
 161     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 162     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 163     { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
 164     { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 165     { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
 166     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 167     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 168     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 169     { "GL_EXT_blend_logic_op",             NULL },
 170     { "GL_EXT_blend_subtract",             NULL },
 171     { "GL_EXT_cull_vertex",                GL_EXT_cull_vertex_functions },
 172     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 173     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 174     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 175     { "GL_EXT_stencil_wrap",               NULL },
 176     { "GL_EXT_texture_edge_clamp",         NULL },
 177     { "GL_EXT_texture_env_combine",        NULL },
 178     { "GL_EXT_texture_env_dot3",           NULL },
 179     { "GL_EXT_texture_filter_anisotropic", NULL },
 180     { "GL_EXT_texture_lod_bias",           NULL },
 181     { "GL_3DFX_texture_compression_FXT1",  NULL },
 182     { "GL_APPLE_client_storage",           NULL },
 183     { "GL_MESA_pack_invert",               NULL },
 184     { "GL_MESA_ycbcr_texture",             NULL },
 185     { "GL_NV_blend_square",                NULL },
 186     { "GL_SGIS_generate_mipmap",           NULL },
 187     { NULL,                                NULL }
 188 };
 189
 190
 191
 192 static const struct dri_debug_control debug_control[] =
 193 {
 194     { "fall",  DEBUG_FALLBACKS },
 195     { "tex",   DEBUG_TEXTURE },
 196     { "ioctl", DEBUG_IOCTL },
 197     { "prim",  DEBUG_PRIMS },
 198     { "vert",  DEBUG_VERTS },
 199     { "state", DEBUG_STATE },
 200     { "verb",  DEBUG_VERBOSE },
 201     { "dri",   DEBUG_DRI },
 202     { "dma",   DEBUG_DMA },
 203     { "san",   DEBUG_SANITY },
 204     { "sync",  DEBUG_SYNC },
 205     { "sleep", DEBUG_SLEEP },
 206     { "pix",   DEBUG_PIXEL },
 207     { "buf",   DEBUG_BUFMGR },
 208     { "stats", DEBUG_STATS },
 209     { "tile",  DEBUG_TILE },
 210     { "sing",  DEBUG_SINGLE_THREAD },
 211     { "thre",  DEBUG_SINGLE_THREAD },
 212     { "wm",    DEBUG_WM },
 213     { "vs",    DEBUG_VS },
 214     { NULL,    0 }
 215 };
 216
 217
 218 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 219 {
 220    struct intel_context *intel = intel_context(ctx);
 221
 222    _swrast_InvalidateState( ctx, new_state );
 223    _swsetup_InvalidateState( ctx, new_state );
 224    _ac_InvalidateState( ctx, new_state );
 225    _tnl_InvalidateState( ctx, new_state );
 226    _tnl_invalidate_vertex_state( ctx, new_state );
 227
 228    intel->NewGLState |= new_state;
 229
 230    if (intel->vtbl.invalidate_state)
 231       intel->vtbl.invalidate_state( intel, new_state );
 232 }
 233
 234
 235 void intelFlush( GLcontext *ctx )
 236 {
 237    struct intel_context *intel = intel_context( ctx );
 238
 239    bmLockAndFence(intel);
 240 }
 241
 242 void intelFinish( GLcontext *ctx )
 243 {
 244    struct intel_context *intel = intel_context( ctx );
 245
 246    bmFinishFence(intel, bmLockAndFence(intel));
 247 }
 248
 249 static void
 250 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 251 {
 252         struct intel_context *intel = intel_context( ctx );
 253         GLuint64EXT tmp = 0;
 254         drmI830MMIO io = {
 255                 .read_write = MMIO_WRITE,
 256                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 257                 .data = &tmp
 258         };
 259         intel->stats_wm = GL_TRUE;
 260         intelFinish(&intel->ctx);
 261         drmCommandWrite(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 262 }
 263
 264 static void
 265 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 266 {
 267         struct intel_context *intel = intel_context( ctx );
 268         drmI830MMIO io = {
 269                 .read_write = MMIO_READ,
 270                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 271                 .data = &q->Result
 272         };
 273         intelFinish(&intel->ctx);
 274         drmCommandRead(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 275         q->Ready = GL_TRUE;
 276         intel->stats_wm = GL_FALSE;
 277 }
 278
 279
 280 void intelInitDriverFunctions( struct dd_function_table *functions )
 281 {
 282    _mesa_init_driver_functions( functions );
 283
 284    functions->Flush = intelFlush;
 285    functions->Finish = intelFinish;
 286    functions->GetString = intelGetString;
 287    functions->UpdateState = intelInvalidateState;
 288    functions->BeginQuery = intelBeginQuery;
 289    functions->EndQuery = intelEndQuery;
 290
 291    /* CopyPixels can be accelerated even with the current memory
 292     * manager:
 293     */
 294    if (!getenv("INTEL_NO_BLIT")) {
 295       functions->CopyPixels = intelCopyPixels;
 296       functions->Bitmap = intelBitmap;
 297    }
 298
 299    intelInitTextureFuncs( functions );
 300    intelInitStateFuncs( functions );
 301    intelInitBufferFuncs( functions );
 302 }
 303
 304
 305
 306 GLboolean intelInitContext( struct intel_context *intel,
 307                             const __GLcontextModes *mesaVis,
 308                             __DRIcontextPrivate *driContextPriv,
 309                             void *sharedContextPrivate,
 310                             struct dd_function_table *functions )
 311 {
 312    GLcontext *ctx = &intel->ctx;
 313    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 314    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 315    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 316    volatile drmI830Sarea *saPriv = (volatile drmI830Sarea *)
 317       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 318
 319    if (!_mesa_initialize_context(&intel->ctx,
 320                                  mesaVis, shareCtx,
 321                                  functions,
 322                                  (void*) intel)) {
 323       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 324       return GL_FALSE;
 325    }
 326
 327    driContextPriv->driverPrivate = intel;
 328    intel->intelScreen = intelScreen;
 329    intel->driScreen = sPriv;
 330    intel->sarea = saPriv;
 331
 332
 333    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 334
 335    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 336       intel->strict_conformance = 1;
 337    }
 338
 339    if (intel->strict_conformance) {
 340       ctx->Const.MinLineWidth = 1.0;
 341       ctx->Const.MinLineWidthAA = 1.0;
 342       ctx->Const.MaxLineWidth = 1.0;
 343       ctx->Const.MaxLineWidthAA = 1.0;
 344       ctx->Const.LineWidthGranularity = 1.0;
 345    }
 346    else {
 347       ctx->Const.MinLineWidth = 1.0;
 348       ctx->Const.MinLineWidthAA = 1.0;
 349       ctx->Const.MaxLineWidth = 5.0;
 350       ctx->Const.MaxLineWidthAA = 5.0;
 351       ctx->Const.LineWidthGranularity = 0.5;
 352    }
 353
 354    ctx->Const.MinPointSize = 1.0;
 355    ctx->Const.MinPointSizeAA = 1.0;
 356    ctx->Const.MaxPointSize = 255.0;
 357    ctx->Const.MaxPointSizeAA = 3.0;
 358    ctx->Const.PointSizeGranularity = 1.0;
 359
 360    /* reinitialize the context point state.
 361     * It depend on constants in __GLcontextRec::Const
 362     */
 363    _mesa_init_point(ctx);
 364
 365    /* Initialize the software rasterizer and helper modules. */
 366    _swrast_CreateContext( ctx );
 367    _ac_CreateContext( ctx );
 368    _tnl_CreateContext( ctx );
 369    _swsetup_CreateContext( ctx );
 370
 371    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 372
 373    /* Configure swrast to match hardware characteristics: */
 374    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 375    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 376
 377    /* Dri stuff */
 378    intel->hHWContext = driContextPriv->hHWContext;
 379    intel->driFd = sPriv->fd;
 380    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 381
 382    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 383    intel->hw_stipple = 1;
 384
 385    switch(mesaVis->depthBits) {
 386    case 0:                      /* what to do in this case? */
 387    case 16:
 388       intel->depth_scale = 1.0/0xffff;
 389       intel->polygon_offset_scale = 1.0/0xffff;
 390       intel->depth_clear_mask = ~0;
 391       intel->ClearDepth = 0xffff;
 392       break;
 393    case 24:
 394       intel->depth_scale = 1.0/0xffffff;
 395       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 396       intel->depth_clear_mask = 0x00ffffff;
 397       intel->stencil_clear_mask = 0xff000000;
 398       intel->ClearDepth = 0x00ffffff;
 399       break;
 400    default:
 401       assert(0);
 402       break;
 403    }
 404
 405    /* Initialize swrast, tnl driver tables: */
 406    intelInitSpanFuncs( ctx );
 407
 408    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 409
 410    if (!intel->intelScreen->irq_active) {
 411       _mesa_printf("IRQs not active.  Exiting\n");
 412       exit(1);
 413    }
 414
 415    driInitExtensions( ctx, card_extensions,
 416                       GL_TRUE );
 417
 418    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 419                                        debug_control );
 420
 421
 422    /* Buffer manager:
 423     */
 424    intel->bm = bm_fake_intel_Attach( intel );
 425
 426
 427    bmInitPool(intel,
 428               intel->intelScreen->tex.offset, /* low offset */
 429               intel->intelScreen->tex.map, /* low virtual */
 430               intel->intelScreen->tex.size,
 431               BM_MEM_AGP);
 432
 433    /* These are still static, but create regions for them.
 434     */
 435    intel->front_region =
 436       intel_region_create_static(intel,
 437                                  BM_MEM_AGP,
 438                                  intelScreen->front.offset,
 439                                  intelScreen->front.map,
 440                                  intelScreen->cpp,
 441                                  intelScreen->front.pitch / intelScreen->cpp,
 442                                  intelScreen->height,
 443                                  intelScreen->front.tiled != 0); /* 0: LINEAR */
 444
 445
 446    intel->back_region =
 447       intel_region_create_static(intel,
 448                                  BM_MEM_AGP,
 449                                  intelScreen->back.offset,
 450                                  intelScreen->back.map,
 451                                  intelScreen->cpp,
 452                                  intelScreen->back.pitch / intelScreen->cpp,
 453                                  intelScreen->height,
 454                                  intelScreen->back.tiled != 0);
 455
 456    /* Still assuming front.cpp == depth.cpp
 457     *
 458     * XXX: Setting tiling to false because Depth tiling only supports
 459     * YMAJOR but the blitter only supports XMAJOR tiling.  Have to
 460     * resolve later.
 461     */
 462    intel->depth_region =
 463       intel_region_create_static(intel,
 464                                  BM_MEM_AGP,
 465                                  intelScreen->depth.offset,
 466                                  intelScreen->depth.map,
 467                                  intelScreen->cpp,
 468                                  intelScreen->depth.pitch / intelScreen->cpp,
 469                                  intelScreen->height,
 470                                  intelScreen->depth.tiled != 0);
 471
 472    intel_bufferobj_init( intel );
 473    intel->batch = intel_batchbuffer_alloc( intel );
 474
 475    if (intel->ctx.Mesa_DXTn) {
 476       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 477       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 478    }
 479    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 480       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 481    }
 482
 483 /*    driInitTextureObjects( ctx, & intel->swapped, */
 484 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 485 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 486 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 487
 488
 489    if (getenv("INTEL_NO_RAST")) {
 490       fprintf(stderr, "disabling 3D rasterization\n");
 491       intel->no_rast = 1;
 492    }
 493
 494
 495    return GL_TRUE;
 496 }
 497
 498 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 499 {
 500    struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 501
 502    assert(intel); /* should never be null */
 503    if (intel) {
 504       GLboolean   release_texture_heaps;
 505
 506
 507       intel->vtbl.destroy( intel );
 508
 509       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 510       _swsetup_DestroyContext (&intel->ctx);
 511       _tnl_DestroyContext (&intel->ctx);
 512       _ac_DestroyContext (&intel->ctx);
 513
 514       _swrast_DestroyContext (&intel->ctx);
 515       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 516       intel_batchbuffer_free(intel->batch);
 517       intel->batch = NULL;
 518
 519
 520       if ( release_texture_heaps ) {
 521          /* This share group is about to go away, free our private
 522           * texture object data.
 523           */
 524
 525          /* XXX: destroy the shared bufmgr struct here?
 526           */
 527       }
 528
 529       /* Free the regions created to describe front/back/depth
 530        * buffers:
 531        */
 532 #if 0
 533       intel_region_release(intel, &intel->front_region);
 534       intel_region_release(intel, &intel->back_region);
 535       intel_region_release(intel, &intel->depth_region);
 536       intel_region_release(intel, &intel->draw_region);
 537 #endif
 538
 539       /* free the Mesa context */
 540       _mesa_destroy_context(&intel->ctx);
 541    }
 542
 543    driContextPriv->driverPrivate = NULL;
 544 }
 545
 546 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 547 {
 548    return GL_TRUE;
 549 }
 550
 551 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 552                           __DRIdrawablePrivate *driDrawPriv,
 553                           __DRIdrawablePrivate *driReadPriv)
 554 {
 555
 556    if (driContextPriv) {
 557       struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 558
 559       if ( intel->driDrawable != driDrawPriv ) {
 560          /* Shouldn't the readbuffer be stored also? */
 561          intel->driDrawable = driDrawPriv;
 562          intelWindowMoved( intel );
 563       }
 564
 565       _mesa_make_current(&intel->ctx,
 566                          (GLframebuffer *) driDrawPriv->driverPrivate,
 567                          (GLframebuffer *) driReadPriv->driverPrivate);
 568
 569       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 570    } else {
 571       _mesa_make_current(NULL, NULL, NULL);
 572    }
 573
 574    return GL_TRUE;
 575 }
 576
 577
 578 static void intelContendedLock( struct intel_context *intel, GLuint flags )
 579 {
 580    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 581    __DRIscreenPrivate *sPriv = intel->driScreen;
 582    volatile drmI830Sarea * sarea = intel->sarea;
 583    int me = intel->hHWContext;
 584    int my_bufmgr = bmCtxId(intel);
 585
 586    drmGetLock(intel->driFd, intel->hHWContext, flags);
 587
 588    /* If the window moved, may need to set a new cliprect now.
 589     *
 590     * NOTE: This releases and regains the hw lock, so all state
 591     * checking must be done *after* this call:
 592     */
 593    if (dPriv)
 594       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 595
 596
 597    intel->locked = 1;
 598    intel->need_flush = 1;
 599
 600    /* Lost context?
 601     */
 602    if (sarea->ctxOwner != me) {
 603       DBG("Lost Context: sarea->ctxOwner %x me %x\n", sarea->ctxOwner, me);
 604       sarea->ctxOwner = me;
 605       intel->vtbl.lost_hardware( intel );
 606    }
 607
 608    /* As above, but don't evict the texture data on transitions
 609     * between contexts which all share a local buffer manager.
 610     */
 611    if (sarea->texAge != my_bufmgr) {
 612       DBG("Lost Textures: sarea->texAge %x my_bufmgr %x\n", sarea->ctxOwner, my_bufmgr);
 613       sarea->texAge = my_bufmgr;
 614       bm_fake_NotifyContendedLockTake( intel );
 615    }
 616
 617    /* Drawable changed?
 618     */
 619    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 620       intelWindowMoved( intel );
 621       intel->lastStamp = dPriv->lastStamp;
 622    }
 623 }
 624
 625 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 626
 627 /* Lock the hardware and validate our state.
 628  */
 629 void LOCK_HARDWARE( struct intel_context *intel )
 630 {
 631     char __ret=0;
 632
 633     _glthread_LOCK_MUTEX(lockMutex);
 634     assert(!intel->locked);
 635
 636
 637     DRM_CAS(intel->driHwLock, intel->hHWContext,
 638             (DRM_LOCK_HELD|intel->hHWContext), __ret);
 639     if (__ret)
 640         intelContendedLock( intel, 0 );
 641
 642    intel->locked = 1;
 643
 644    if (intel->aub_wrap) {
 645       bm_fake_NotifyContendedLockTake( intel );
 646       intel->vtbl.lost_hardware( intel );
 647       intel->vtbl.aub_wrap(intel);
 648       intel->aub_wrap = 0;
 649    }
 650
 651    if (bmError(intel)) {
 652       bmEvictAll(intel);
 653       intel->vtbl.lost_hardware( intel );
 654    }
 655
 656    /* Make sure nothing has been emitted prior to getting the lock:
 657     */
 658    assert(intel->batch->map == 0);
 659
 660    /* XXX: postpone, may not be needed:
 661     */
 662    if (!intel_batchbuffer_map(intel->batch)) {
 663       bmEvictAll(intel);
 664       intel->vtbl.lost_hardware( intel );
 665
 666       /* This could only fail if the batchbuffer was greater in size
 667        * than the available texture memory:
 668        */
 669       if (!intel_batchbuffer_map(intel->batch)) {
 670          _mesa_printf("double failure to map batchbuffer\n");
 671          assert(0);
 672       }
 673    }
 674 }
 675
 676
 677 /* Unlock the hardware using the global current context
 678  */
 679 void UNLOCK_HARDWARE( struct intel_context *intel )
 680 {
 681    /* Make sure everything has been released:
 682     */
 683    assert(intel->batch->ptr == intel->batch->map + intel->batch->offset);
 684
 685    intel_batchbuffer_unmap(intel->batch);
 686    intel->vtbl.note_unlock( intel );
 687    intel->locked = 0;
 688
 689
 690
 691    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 692    _glthread_UNLOCK_MUTEX(lockMutex);
 693 }
 694