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 #include "points.h"
  37
  38 #include "swrast/swrast.h"
  39 #include "swrast_setup/swrast_setup.h"
  40 #include "tnl/tnl.h"
  41 #include "array_cache/acache.h"
  42
  43 #include "tnl/t_pipeline.h"
  44 #include "tnl/t_vertex.h"
  45
  46 #include "drivers/common/driverfuncs.h"
  47
  48 #include "intel_screen.h"
  49
  50 #include "i830_dri.h"
  51 #include "i830_common.h"
  52
  53 #include "intel_tex.h"
  54 #include "intel_span.h"
  55 #include "intel_ioctl.h"
  56 #include "intel_batchbuffer.h"
  57 #include "intel_blit.h"
  58 #include "intel_regions.h"
  59 #include "intel_buffer_objects.h"
  60
  61 #include "bufmgr.h"
  62
  63 #include "utils.h"
  64 #ifndef INTEL_DEBUG
  65 int INTEL_DEBUG = (0);
  66 #endif
  67
  68 #define need_GL_ARB_multisample
  69 #define need_GL_ARB_point_parameters
  70 #define need_GL_ARB_texture_compression
  71 #define need_GL_ARB_vertex_buffer_object
  72 #define need_GL_ARB_vertex_program
  73 #define need_GL_ARB_window_pos
  74 #define need_GL_ARB_occlusion_query
  75 #define need_GL_EXT_blend_color
  76 #define need_GL_EXT_blend_equation_separate
  77 #define need_GL_EXT_blend_func_separate
  78 #define need_GL_EXT_blend_minmax
  79 #define need_GL_EXT_cull_vertex
  80 #define need_GL_EXT_fog_coord
  81 #define need_GL_EXT_multi_draw_arrays
  82 #define need_GL_EXT_secondary_color
  83 #include "extension_helper.h"
  84
  85 #ifndef VERBOSE
  86 int VERBOSE = 0;
  87 #endif
  88
  89 #if DEBUG_LOCKING
  90 char *prevLockFile;
  91 int prevLockLine;
  92 #endif
  93
  94 /***************************************
  95  * Mesa's Driver Functions
  96  ***************************************/
  97
  98 #define DRIVER_VERSION                     "4.1.3002"
  99
 100 static const GLubyte *intelGetString( GLcontext *ctx, GLenum name )
 101 {
 102    const char * chipset;
 103    static char buffer[128];
 104
 105    switch (name) {
 106    case GL_VENDOR:
 107       return (GLubyte *)"Tungsten Graphics, Inc";
 108       break;
 109
 110    case GL_RENDERER:
 111       switch (intel_context(ctx)->intelScreen->deviceID) {
 112       case PCI_CHIP_I965_Q:
 113          chipset = "Intel(R) 965Q"; break;
 114          break;
 115       case PCI_CHIP_I965_G:
 116       case PCI_CHIP_I965_G_1:
 117          chipset = "Intel(R) 965G"; break;
 118          break;
 119       case PCI_CHIP_I946_GZ:
 120          chipset = "Intel(R) 946GZ"; break;
 121          break;
 122       default:
 123          chipset = "Unknown Intel Chipset"; break;
 124       }
 125
 126       (void) driGetRendererString( buffer, chipset, DRIVER_VERSION, 0 );
 127       return (GLubyte *) buffer;
 128
 129    default:
 130       return NULL;
 131    }
 132 }
 133
 134
 135 /**
 136  * Extension strings exported by the intel driver.
 137  *
 138  * \note
 139  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 140  * old i830-specific driver.
 141  */
 142 const struct dri_extension card_extensions[] =
 143 {
 144     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 145     { "GL_ARB_multitexture",               NULL },
 146     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 147     { "GL_ARB_texture_border_clamp",       NULL },
 148     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 149     { "GL_ARB_texture_cube_map",           NULL },
 150     { "GL_ARB_texture_env_add",            NULL },
 151     { "GL_ARB_texture_env_combine",        NULL },
 152     { "GL_ARB_texture_env_dot3",           NULL },
 153     { "GL_ARB_texture_mirrored_repeat",    NULL },
 154     { "GL_ARB_texture_non_power_of_two",   NULL },
 155     { "GL_ARB_texture_rectangle",          NULL },
 156     { "GL_NV_texture_rectangle",           NULL },
 157     { "GL_EXT_texture_rectangle",          NULL },
 158     { "GL_ARB_texture_rectangle",          NULL },
 159     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 160     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 161     { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
 162     { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
 163     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 164     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 165     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 166     { "GL_EXT_blend_logic_op",             NULL },
 167     { "GL_EXT_blend_subtract",             NULL },
 168     { "GL_EXT_cull_vertex",                GL_EXT_cull_vertex_functions },
 169     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 170     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 171     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 172     { "GL_EXT_stencil_wrap",               NULL },
 173     { "GL_EXT_texture_edge_clamp",         NULL },
 174     { "GL_EXT_texture_env_combine",        NULL },
 175     { "GL_EXT_texture_env_dot3",           NULL },
 176     { "GL_EXT_texture_filter_anisotropic", NULL },
 177     { "GL_EXT_texture_lod_bias",           NULL },
 178     { "GL_3DFX_texture_compression_FXT1",  NULL },
 179     { "GL_APPLE_client_storage",           NULL },
 180     { "GL_MESA_pack_invert",               NULL },
 181     { "GL_MESA_ycbcr_texture",             NULL },
 182     { "GL_NV_blend_square",                NULL },
 183     { "GL_SGIS_generate_mipmap",           NULL },
 184     { NULL,                                NULL }
 185 };
 186
 187 static const struct dri_extension arb_oc_extension =
 188     { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions};
 189
 190 static const struct dri_debug_control debug_control[] =
 191 {
 192     { "fall",  DEBUG_FALLBACKS },
 193     { "tex",   DEBUG_TEXTURE },
 194     { "ioctl", DEBUG_IOCTL },
 195     { "prim",  DEBUG_PRIMS },
 196     { "vert",  DEBUG_VERTS },
 197     { "state", DEBUG_STATE },
 198     { "verb",  DEBUG_VERBOSE },
 199     { "dri",   DEBUG_DRI },
 200     { "dma",   DEBUG_DMA },
 201     { "san",   DEBUG_SANITY },
 202     { "sync",  DEBUG_SYNC },
 203     { "sleep", DEBUG_SLEEP },
 204     { "pix",   DEBUG_PIXEL },
 205     { "buf",   DEBUG_BUFMGR },
 206     { "stats", DEBUG_STATS },
 207     { "tile",  DEBUG_TILE },
 208     { "sing",  DEBUG_SINGLE_THREAD },
 209     { "thre",  DEBUG_SINGLE_THREAD },
 210     { "wm",    DEBUG_WM },
 211     { "vs",    DEBUG_VS },
 212     { NULL,    0 }
 213 };
 214
 215
 216 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 217 {
 218    struct intel_context *intel = intel_context(ctx);
 219
 220    _swrast_InvalidateState( ctx, new_state );
 221    _swsetup_InvalidateState( ctx, new_state );
 222    _ac_InvalidateState( ctx, new_state );
 223    _tnl_InvalidateState( ctx, new_state );
 224    _tnl_invalidate_vertex_state( ctx, new_state );
 225
 226    intel->NewGLState |= new_state;
 227
 228    if (intel->vtbl.invalidate_state)
 229       intel->vtbl.invalidate_state( intel, new_state );
 230 }
 231
 232
 233 void intelFlush( GLcontext *ctx )
 234 {
 235    struct intel_context *intel = intel_context( ctx );
 236
 237    bmLockAndFence(intel);
 238 }
 239
 240 void intelFinish( GLcontext *ctx )
 241 {
 242    struct intel_context *intel = intel_context( ctx );
 243
 244    bmFinishFence(intel, bmLockAndFence(intel));
 245 }
 246
 247 static void
 248 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 249 {
 250         struct intel_context *intel = intel_context( ctx );
 251         GLuint64EXT tmp = 0;
 252         drmI830MMIO io = {
 253                 .read_write = MMIO_WRITE,
 254                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 255                 .data = &tmp
 256         };
 257         intel->stats_wm = GL_TRUE;
 258         intelFinish(&intel->ctx);
 259         drmCommandWrite(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 260 }
 261
 262 static void
 263 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 264 {
 265         struct intel_context *intel = intel_context( ctx );
 266         drmI830MMIO io = {
 267                 .read_write = MMIO_READ,
 268                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 269                 .data = &q->Result
 270         };
 271         intelFinish(&intel->ctx);
 272         drmCommandRead(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 273         q->Ready = GL_TRUE;
 274         intel->stats_wm = GL_FALSE;
 275 }
 276
 277
 278 void intelInitDriverFunctions( struct dd_function_table *functions )
 279 {
 280    _mesa_init_driver_functions( functions );
 281
 282    functions->Flush = intelFlush;
 283    functions->Finish = intelFinish;
 284    functions->GetString = intelGetString;
 285    functions->UpdateState = intelInvalidateState;
 286    functions->BeginQuery = intelBeginQuery;
 287    functions->EndQuery = intelEndQuery;
 288
 289    /* CopyPixels can be accelerated even with the current memory
 290     * manager:
 291     */
 292    if (!getenv("INTEL_NO_BLIT")) {
 293       functions->CopyPixels = intelCopyPixels;
 294       functions->Bitmap = intelBitmap;
 295    }
 296
 297    intelInitTextureFuncs( functions );
 298    intelInitStateFuncs( functions );
 299    intelInitBufferFuncs( functions );
 300 }
 301
 302
 303
 304 GLboolean intelInitContext( struct intel_context *intel,
 305                             const __GLcontextModes *mesaVis,
 306                             __DRIcontextPrivate *driContextPriv,
 307                             void *sharedContextPrivate,
 308                             struct dd_function_table *functions )
 309 {
 310    GLcontext *ctx = &intel->ctx;
 311    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 312    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 313    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 314    volatile drmI830Sarea *saPriv = (volatile drmI830Sarea *)
 315       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 316
 317    if (!_mesa_initialize_context(&intel->ctx,
 318                                  mesaVis, shareCtx,
 319                                  functions,
 320                                  (void*) intel)) {
 321       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 322       return GL_FALSE;
 323    }
 324
 325    driContextPriv->driverPrivate = intel;
 326    intel->intelScreen = intelScreen;
 327    intel->driScreen = sPriv;
 328    intel->sarea = saPriv;
 329
 330
 331    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 332
 333    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 334       intel->strict_conformance = 1;
 335    }
 336
 337    if (intel->strict_conformance) {
 338       ctx->Const.MinLineWidth = 1.0;
 339       ctx->Const.MinLineWidthAA = 1.0;
 340       ctx->Const.MaxLineWidth = 1.0;
 341       ctx->Const.MaxLineWidthAA = 1.0;
 342       ctx->Const.LineWidthGranularity = 1.0;
 343    }
 344    else {
 345       ctx->Const.MinLineWidth = 1.0;
 346       ctx->Const.MinLineWidthAA = 1.0;
 347       ctx->Const.MaxLineWidth = 5.0;
 348       ctx->Const.MaxLineWidthAA = 5.0;
 349       ctx->Const.LineWidthGranularity = 0.5;
 350    }
 351
 352    ctx->Const.MinPointSize = 1.0;
 353    ctx->Const.MinPointSizeAA = 1.0;
 354    ctx->Const.MaxPointSize = 255.0;
 355    ctx->Const.MaxPointSizeAA = 3.0;
 356    ctx->Const.PointSizeGranularity = 1.0;
 357
 358    /* reinitialize the context point state.
 359     * It depend on constants in __GLcontextRec::Const
 360     */
 361    _mesa_init_point(ctx);
 362
 363    /* Initialize the software rasterizer and helper modules. */
 364    _swrast_CreateContext( ctx );
 365    _ac_CreateContext( ctx );
 366    _tnl_CreateContext( ctx );
 367    _swsetup_CreateContext( ctx );
 368
 369    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 370
 371    /* Configure swrast to match hardware characteristics: */
 372    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 373    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 374
 375    /* Dri stuff */
 376    intel->hHWContext = driContextPriv->hHWContext;
 377    intel->driFd = sPriv->fd;
 378    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 379
 380    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 381    intel->hw_stipple = 1;
 382
 383    switch(mesaVis->depthBits) {
 384    case 0:                      /* what to do in this case? */
 385    case 16:
 386       intel->depth_scale = 1.0/0xffff;
 387       intel->polygon_offset_scale = 1.0/0xffff;
 388       intel->depth_clear_mask = ~0;
 389       intel->ClearDepth = 0xffff;
 390       break;
 391    case 24:
 392       intel->depth_scale = 1.0/0xffffff;
 393       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 394       intel->depth_clear_mask = 0x00ffffff;
 395       intel->stencil_clear_mask = 0xff000000;
 396       intel->ClearDepth = 0x00ffffff;
 397       break;
 398    default:
 399       assert(0);
 400       break;
 401    }
 402
 403    /* Initialize swrast, tnl driver tables: */
 404    intelInitSpanFuncs( ctx );
 405
 406    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 407
 408    if (!intel->intelScreen->irq_active) {
 409       _mesa_printf("IRQs not active.  Exiting\n");
 410       exit(1);
 411    }
 412
 413    driInitExtensions( ctx, card_extensions,
 414                       GL_TRUE );
 415
 416    if (intel->intelScreen->drmMinor >= 8)
 417       driInitSingleExtension (ctx, &arb_oc_extension);
 418
 419    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 420                                        debug_control );
 421
 422
 423    /* Buffer manager:
 424     */
 425    intel->bm = bm_fake_intel_Attach( intel );
 426
 427
 428    bmInitPool(intel,
 429               intel->intelScreen->tex.offset, /* low offset */
 430               intel->intelScreen->tex.map, /* low virtual */
 431               intel->intelScreen->tex.size,
 432               BM_MEM_AGP);
 433
 434    /* These are still static, but create regions for them.
 435     */
 436    intel->front_region =
 437       intel_region_create_static(intel,
 438                                  BM_MEM_AGP,
 439                                  intelScreen->front.offset,
 440                                  intelScreen->front.map,
 441                                  intelScreen->cpp,
 442                                  intelScreen->front.pitch / intelScreen->cpp,
 443                                  intelScreen->height,
 444                                  intelScreen->front.tiled != 0); /* 0: LINEAR */
 445
 446
 447    intel->back_region =
 448       intel_region_create_static(intel,
 449                                  BM_MEM_AGP,
 450                                  intelScreen->back.offset,
 451                                  intelScreen->back.map,
 452                                  intelScreen->cpp,
 453                                  intelScreen->back.pitch / intelScreen->cpp,
 454                                  intelScreen->height,
 455                                  intelScreen->back.tiled != 0);
 456
 457    /* Still assuming front.cpp == depth.cpp
 458     *
 459     * XXX: Setting tiling to false because Depth tiling only supports
 460     * YMAJOR but the blitter only supports XMAJOR tiling.  Have to
 461     * resolve later.
 462     */
 463    intel->depth_region =
 464       intel_region_create_static(intel,
 465                                  BM_MEM_AGP,
 466                                  intelScreen->depth.offset,
 467                                  intelScreen->depth.map,
 468                                  intelScreen->cpp,
 469                                  intelScreen->depth.pitch / intelScreen->cpp,
 470                                  intelScreen->height,
 471                                  intelScreen->depth.tiled != 0);
 472
 473    intel_bufferobj_init( intel );
 474    intel->batch = intel_batchbuffer_alloc( intel );
 475
 476    if (intel->ctx.Mesa_DXTn) {
 477       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 478       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 479    }
 480    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 481       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 482    }
 483
 484 /*    driInitTextureObjects( ctx, & intel->swapped, */
 485 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 486 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 487 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 488
 489
 490    if (getenv("INTEL_NO_RAST")) {
 491       fprintf(stderr, "disabling 3D rasterization\n");
 492       intel->no_rast = 1;
 493    }
 494
 495
 496    return GL_TRUE;
 497 }
 498
 499 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 500 {
 501    struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 502
 503    assert(intel); /* should never be null */
 504    if (intel) {
 505       GLboolean   release_texture_heaps;
 506
 507
 508       intel->vtbl.destroy( intel );
 509
 510       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 511       _swsetup_DestroyContext (&intel->ctx);
 512       _tnl_DestroyContext (&intel->ctx);
 513       _ac_DestroyContext (&intel->ctx);
 514
 515       _swrast_DestroyContext (&intel->ctx);
 516       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 517       intel_batchbuffer_free(intel->batch);
 518       intel->batch = NULL;
 519
 520
 521       if ( release_texture_heaps ) {
 522          /* This share group is about to go away, free our private
 523           * texture object data.
 524           */
 525
 526          /* XXX: destroy the shared bufmgr struct here?
 527           */
 528       }
 529
 530       /* Free the regions created to describe front/back/depth
 531        * buffers:
 532        */
 533 #if 0
 534       intel_region_release(intel, &intel->front_region);
 535       intel_region_release(intel, &intel->back_region);
 536       intel_region_release(intel, &intel->depth_region);
 537       intel_region_release(intel, &intel->draw_region);
 538 #endif
 539
 540       /* free the Mesa context */
 541       _mesa_destroy_context(&intel->ctx);
 542    }
 543
 544    driContextPriv->driverPrivate = NULL;
 545 }
 546
 547 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 548 {
 549    return GL_TRUE;
 550 }
 551
 552 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 553                           __DRIdrawablePrivate *driDrawPriv,
 554                           __DRIdrawablePrivate *driReadPriv)
 555 {
 556
 557    if (driContextPriv) {
 558       struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 559
 560       if ( intel->driDrawable != driDrawPriv ) {
 561          /* Shouldn't the readbuffer be stored also? */
 562          intel->driDrawable = driDrawPriv;
 563          intelWindowMoved( intel );
 564       }
 565
 566       _mesa_make_current(&intel->ctx,
 567                          (GLframebuffer *) driDrawPriv->driverPrivate,
 568                          (GLframebuffer *) driReadPriv->driverPrivate);
 569
 570       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 571    } else {
 572       _mesa_make_current(NULL, NULL, NULL);
 573    }
 574
 575    return GL_TRUE;
 576 }
 577
 578
 579 static void intelContendedLock( struct intel_context *intel, GLuint flags )
 580 {
 581    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 582    __DRIscreenPrivate *sPriv = intel->driScreen;
 583    volatile drmI830Sarea * sarea = intel->sarea;
 584    int me = intel->hHWContext;
 585    int my_bufmgr = bmCtxId(intel);
 586
 587    drmGetLock(intel->driFd, intel->hHWContext, flags);
 588
 589    /* If the window moved, may need to set a new cliprect now.
 590     *
 591     * NOTE: This releases and regains the hw lock, so all state
 592     * checking must be done *after* this call:
 593     */
 594    if (dPriv)
 595       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 596
 597
 598    intel->locked = 1;
 599    intel->need_flush = 1;
 600
 601    /* Lost context?
 602     */
 603    if (sarea->ctxOwner != me) {
 604       DBG("Lost Context: sarea->ctxOwner %x me %x\n", sarea->ctxOwner, me);
 605       sarea->ctxOwner = me;
 606       intel->vtbl.lost_hardware( intel );
 607    }
 608
 609    /* As above, but don't evict the texture data on transitions
 610     * between contexts which all share a local buffer manager.
 611     */
 612    if (sarea->texAge != my_bufmgr) {
 613       DBG("Lost Textures: sarea->texAge %x my_bufmgr %x\n", sarea->ctxOwner, my_bufmgr);
 614       sarea->texAge = my_bufmgr;
 615       bm_fake_NotifyContendedLockTake( intel );
 616    }
 617
 618    /* Drawable changed?
 619     */
 620    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 621       intelWindowMoved( intel );
 622       intel->lastStamp = dPriv->lastStamp;
 623    }
 624 }
 625
 626 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 627
 628 /* Lock the hardware and validate our state.
 629  */
 630 void LOCK_HARDWARE( struct intel_context *intel )
 631 {
 632     char __ret=0;
 633
 634     _glthread_LOCK_MUTEX(lockMutex);
 635     assert(!intel->locked);
 636
 637
 638     DRM_CAS(intel->driHwLock, intel->hHWContext,
 639             (DRM_LOCK_HELD|intel->hHWContext), __ret);
 640     if (__ret)
 641         intelContendedLock( intel, 0 );
 642
 643    intel->locked = 1;
 644
 645    if (intel->aub_wrap) {
 646       bm_fake_NotifyContendedLockTake( intel );
 647       intel->vtbl.lost_hardware( intel );
 648       intel->vtbl.aub_wrap(intel);
 649       intel->aub_wrap = 0;
 650    }
 651
 652    if (bmError(intel)) {
 653       bmEvictAll(intel);
 654       intel->vtbl.lost_hardware( intel );
 655    }
 656
 657    /* Make sure nothing has been emitted prior to getting the lock:
 658     */
 659    assert(intel->batch->map == 0);
 660
 661    /* XXX: postpone, may not be needed:
 662     */
 663    if (!intel_batchbuffer_map(intel->batch)) {
 664       bmEvictAll(intel);
 665       intel->vtbl.lost_hardware( intel );
 666
 667       /* This could only fail if the batchbuffer was greater in size
 668        * than the available texture memory:
 669        */
 670       if (!intel_batchbuffer_map(intel->batch)) {
 671          _mesa_printf("double failure to map batchbuffer\n");
 672          assert(0);
 673       }
 674    }
 675 }
 676
 677
 678 /* Unlock the hardware using the global current context
 679  */
 680 void UNLOCK_HARDWARE( struct intel_context *intel )
 681 {
 682    /* Make sure everything has been released:
 683     */
 684    assert(intel->batch->ptr == intel->batch->map + intel->batch->offset);
 685
 686    intel_batchbuffer_unmap(intel->batch);
 687    intel->vtbl.note_unlock( intel );
 688    intel->locked = 0;
 689
 690
 691
 692    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 693    _glthread_UNLOCK_MUTEX(lockMutex);
 694 }
 695