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       case PCI_CHIP_CRESTLINE:
 123          chipset = "Intel(R) Crestline"; break;
 124          break;
 125       default:
 126          chipset = "Unknown Intel Chipset"; break;
 127       }
 128
 129       (void) driGetRendererString( buffer, chipset, DRIVER_VERSION, 0 );
 130       return (GLubyte *) buffer;
 131
 132    default:
 133       return NULL;
 134    }
 135 }
 136
 137
 138 /**
 139  * Extension strings exported by the intel driver.
 140  *
 141  * \note
 142  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 143  * old i830-specific driver.
 144  */
 145 const struct dri_extension card_extensions[] =
 146 {
 147     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 148     { "GL_ARB_multitexture",               NULL },
 149     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 150     { "GL_ARB_texture_border_clamp",       NULL },
 151     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 152     { "GL_ARB_texture_cube_map",           NULL },
 153     { "GL_ARB_texture_env_add",            NULL },
 154     { "GL_ARB_texture_env_combine",        NULL },
 155     { "GL_ARB_texture_env_dot3",           NULL },
 156     { "GL_ARB_texture_mirrored_repeat",    NULL },
 157     { "GL_ARB_texture_non_power_of_two",   NULL },
 158     { "GL_ARB_texture_rectangle",          NULL },
 159     { "GL_NV_texture_rectangle",           NULL },
 160     { "GL_EXT_texture_rectangle",          NULL },
 161     { "GL_ARB_texture_rectangle",          NULL },
 162     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 163     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 164     { "GL_ARB_window_pos",                 GL_ARB_window_pos_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 static const struct dri_extension arb_oc_extension =
 191     { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions};
 192
 193 static const struct dri_debug_control debug_control[] =
 194 {
 195     { "fall",  DEBUG_FALLBACKS },
 196     { "tex",   DEBUG_TEXTURE },
 197     { "ioctl", DEBUG_IOCTL },
 198     { "prim",  DEBUG_PRIMS },
 199     { "vert",  DEBUG_VERTS },
 200     { "state", DEBUG_STATE },
 201     { "verb",  DEBUG_VERBOSE },
 202     { "dri",   DEBUG_DRI },
 203     { "dma",   DEBUG_DMA },
 204     { "san",   DEBUG_SANITY },
 205     { "sync",  DEBUG_SYNC },
 206     { "sleep", DEBUG_SLEEP },
 207     { "pix",   DEBUG_PIXEL },
 208     { "buf",   DEBUG_BUFMGR },
 209     { "stats", DEBUG_STATS },
 210     { "tile",  DEBUG_TILE },
 211     { "sing",  DEBUG_SINGLE_THREAD },
 212     { "thre",  DEBUG_SINGLE_THREAD },
 213     { "wm",    DEBUG_WM },
 214     { "vs",    DEBUG_VS },
 215     { NULL,    0 }
 216 };
 217
 218
 219 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 220 {
 221    struct intel_context *intel = intel_context(ctx);
 222
 223    _swrast_InvalidateState( ctx, new_state );
 224    _swsetup_InvalidateState( ctx, new_state );
 225    _ac_InvalidateState( ctx, new_state );
 226    _tnl_InvalidateState( ctx, new_state );
 227    _tnl_invalidate_vertex_state( ctx, new_state );
 228
 229    intel->NewGLState |= new_state;
 230
 231    if (intel->vtbl.invalidate_state)
 232       intel->vtbl.invalidate_state( intel, new_state );
 233 }
 234
 235
 236 void intelFlush( GLcontext *ctx )
 237 {
 238    struct intel_context *intel = intel_context( ctx );
 239
 240    bmLockAndFence(intel);
 241 }
 242
 243 void intelFinish( GLcontext *ctx )
 244 {
 245    struct intel_context *intel = intel_context( ctx );
 246
 247    bmFinishFence(intel, bmLockAndFence(intel));
 248 }
 249
 250 static void
 251 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 252 {
 253         struct intel_context *intel = intel_context( ctx );
 254         GLuint64EXT tmp = 0;
 255         drmI830MMIO io = {
 256                 .read_write = MMIO_WRITE,
 257                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 258                 .data = &tmp
 259         };
 260         intel->stats_wm = GL_TRUE;
 261         intelFinish(&intel->ctx);
 262         drmCommandWrite(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 263 }
 264
 265 static void
 266 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 267 {
 268         struct intel_context *intel = intel_context( ctx );
 269         drmI830MMIO io = {
 270                 .read_write = MMIO_READ,
 271                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 272                 .data = &q->Result
 273         };
 274         intelFinish(&intel->ctx);
 275         drmCommandRead(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 276         q->Ready = GL_TRUE;
 277         intel->stats_wm = GL_FALSE;
 278 }
 279
 280
 281 void intelInitDriverFunctions( struct dd_function_table *functions )
 282 {
 283    _mesa_init_driver_functions( functions );
 284
 285    functions->Flush = intelFlush;
 286    functions->Finish = intelFinish;
 287    functions->GetString = intelGetString;
 288    functions->UpdateState = intelInvalidateState;
 289    functions->BeginQuery = intelBeginQuery;
 290    functions->EndQuery = intelEndQuery;
 291
 292    /* CopyPixels can be accelerated even with the current memory
 293     * manager:
 294     */
 295    if (!getenv("INTEL_NO_BLIT")) {
 296       functions->CopyPixels = intelCopyPixels;
 297       functions->Bitmap = intelBitmap;
 298    }
 299
 300    intelInitTextureFuncs( functions );
 301    intelInitStateFuncs( functions );
 302    intelInitBufferFuncs( functions );
 303 }
 304
 305
 306
 307 GLboolean intelInitContext( struct intel_context *intel,
 308                             const __GLcontextModes *mesaVis,
 309                             __DRIcontextPrivate *driContextPriv,
 310                             void *sharedContextPrivate,
 311                             struct dd_function_table *functions )
 312 {
 313    GLcontext *ctx = &intel->ctx;
 314    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 315    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 316    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 317    volatile drmI830Sarea *saPriv = (volatile drmI830Sarea *)
 318       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 319
 320    if (!_mesa_initialize_context(&intel->ctx,
 321                                  mesaVis, shareCtx,
 322                                  functions,
 323                                  (void*) intel)) {
 324       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 325       return GL_FALSE;
 326    }
 327
 328    driContextPriv->driverPrivate = intel;
 329    intel->intelScreen = intelScreen;
 330    intel->driScreen = sPriv;
 331    intel->sarea = saPriv;
 332
 333
 334    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 335
 336    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 337       intel->strict_conformance = 1;
 338    }
 339
 340    if (intel->strict_conformance) {
 341       ctx->Const.MinLineWidth = 1.0;
 342       ctx->Const.MinLineWidthAA = 1.0;
 343       ctx->Const.MaxLineWidth = 1.0;
 344       ctx->Const.MaxLineWidthAA = 1.0;
 345       ctx->Const.LineWidthGranularity = 1.0;
 346    }
 347    else {
 348       ctx->Const.MinLineWidth = 1.0;
 349       ctx->Const.MinLineWidthAA = 1.0;
 350       ctx->Const.MaxLineWidth = 5.0;
 351       ctx->Const.MaxLineWidthAA = 5.0;
 352       ctx->Const.LineWidthGranularity = 0.5;
 353    }
 354
 355    ctx->Const.MinPointSize = 1.0;
 356    ctx->Const.MinPointSizeAA = 1.0;
 357    ctx->Const.MaxPointSize = 255.0;
 358    ctx->Const.MaxPointSizeAA = 3.0;
 359    ctx->Const.PointSizeGranularity = 1.0;
 360
 361    /* reinitialize the context point state.
 362     * It depend on constants in __GLcontextRec::Const
 363     */
 364    _mesa_init_point(ctx);
 365
 366    /* Initialize the software rasterizer and helper modules. */
 367    _swrast_CreateContext( ctx );
 368    _ac_CreateContext( ctx );
 369    _tnl_CreateContext( ctx );
 370    _swsetup_CreateContext( ctx );
 371
 372    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 373
 374    /* Configure swrast to match hardware characteristics: */
 375    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 376    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 377
 378    /* Dri stuff */
 379    intel->hHWContext = driContextPriv->hHWContext;
 380    intel->driFd = sPriv->fd;
 381    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 382
 383    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 384    intel->hw_stipple = 1;
 385
 386    switch(mesaVis->depthBits) {
 387    case 0:                      /* what to do in this case? */
 388    case 16:
 389       intel->depth_scale = 1.0/0xffff;
 390       intel->polygon_offset_scale = 1.0/0xffff;
 391       intel->depth_clear_mask = ~0;
 392       intel->ClearDepth = 0xffff;
 393       break;
 394    case 24:
 395       intel->depth_scale = 1.0/0xffffff;
 396       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 397       intel->depth_clear_mask = 0x00ffffff;
 398       intel->stencil_clear_mask = 0xff000000;
 399       intel->ClearDepth = 0x00ffffff;
 400       break;
 401    default:
 402       assert(0);
 403       break;
 404    }
 405
 406    /* Initialize swrast, tnl driver tables: */
 407    intelInitSpanFuncs( ctx );
 408
 409    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 410
 411    if (!intel->intelScreen->irq_active) {
 412       _mesa_printf("IRQs not active.  Exiting\n");
 413       exit(1);
 414    }
 415
 416    driInitExtensions( ctx, card_extensions,
 417                       GL_TRUE );
 418
 419    if (intel->intelScreen->drmMinor >= 8)
 420       driInitSingleExtension (ctx, &arb_oc_extension);
 421
 422    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 423                                        debug_control );
 424
 425
 426    /* Buffer manager:
 427     */
 428    intel->bm = bm_fake_intel_Attach( intel );
 429
 430
 431    bmInitPool(intel,
 432               intel->intelScreen->tex.offset, /* low offset */
 433               intel->intelScreen->tex.map, /* low virtual */
 434               intel->intelScreen->tex.size,
 435               BM_MEM_AGP);
 436
 437    /* These are still static, but create regions for them.
 438     */
 439    intel->front_region =
 440       intel_region_create_static(intel,
 441                                  BM_MEM_AGP,
 442                                  intelScreen->front.offset,
 443                                  intelScreen->front.map,
 444                                  intelScreen->cpp,
 445                                  intelScreen->front.pitch / intelScreen->cpp,
 446                                  intelScreen->height,
 447                                  intelScreen->front.tiled != 0); /* 0: LINEAR */
 448
 449
 450    intel->back_region =
 451       intel_region_create_static(intel,
 452                                  BM_MEM_AGP,
 453                                  intelScreen->back.offset,
 454                                  intelScreen->back.map,
 455                                  intelScreen->cpp,
 456                                  intelScreen->back.pitch / intelScreen->cpp,
 457                                  intelScreen->height,
 458                                  intelScreen->back.tiled != 0);
 459
 460    /* Still assuming front.cpp == depth.cpp
 461     *
 462     * XXX: Setting tiling to false because Depth tiling only supports
 463     * YMAJOR but the blitter only supports XMAJOR tiling.  Have to
 464     * resolve later.
 465     */
 466    intel->depth_region =
 467       intel_region_create_static(intel,
 468                                  BM_MEM_AGP,
 469                                  intelScreen->depth.offset,
 470                                  intelScreen->depth.map,
 471                                  intelScreen->cpp,
 472                                  intelScreen->depth.pitch / intelScreen->cpp,
 473                                  intelScreen->height,
 474                                  intelScreen->depth.tiled != 0);
 475
 476    intel_bufferobj_init( intel );
 477    intel->batch = intel_batchbuffer_alloc( intel );
 478
 479    if (intel->ctx.Mesa_DXTn) {
 480       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 481       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 482    }
 483    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 484       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 485    }
 486
 487 /*    driInitTextureObjects( ctx, & intel->swapped, */
 488 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 489 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 490 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 491
 492
 493    if (getenv("INTEL_NO_RAST")) {
 494       fprintf(stderr, "disabling 3D rasterization\n");
 495       intel->no_rast = 1;
 496    }
 497
 498
 499    return GL_TRUE;
 500 }
 501
 502 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 503 {
 504    struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 505
 506    assert(intel); /* should never be null */
 507    if (intel) {
 508       GLboolean   release_texture_heaps;
 509
 510
 511       intel->vtbl.destroy( intel );
 512
 513       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 514       _swsetup_DestroyContext (&intel->ctx);
 515       _tnl_DestroyContext (&intel->ctx);
 516       _ac_DestroyContext (&intel->ctx);
 517
 518       _swrast_DestroyContext (&intel->ctx);
 519       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 520       intel_batchbuffer_free(intel->batch);
 521       intel->batch = NULL;
 522
 523
 524       if ( release_texture_heaps ) {
 525          /* This share group is about to go away, free our private
 526           * texture object data.
 527           */
 528
 529          /* XXX: destroy the shared bufmgr struct here?
 530           */
 531       }
 532
 533       /* Free the regions created to describe front/back/depth
 534        * buffers:
 535        */
 536 #if 0
 537       intel_region_release(intel, &intel->front_region);
 538       intel_region_release(intel, &intel->back_region);
 539       intel_region_release(intel, &intel->depth_region);
 540       intel_region_release(intel, &intel->draw_region);
 541 #endif
 542
 543       /* free the Mesa context */
 544       _mesa_destroy_context(&intel->ctx);
 545    }
 546
 547    driContextPriv->driverPrivate = NULL;
 548 }
 549
 550 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 551 {
 552    return GL_TRUE;
 553 }
 554
 555 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 556                           __DRIdrawablePrivate *driDrawPriv,
 557                           __DRIdrawablePrivate *driReadPriv)
 558 {
 559
 560    if (driContextPriv) {
 561       struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 562
 563       if ( intel->driDrawable != driDrawPriv ) {
 564          /* Shouldn't the readbuffer be stored also? */
 565          intel->driDrawable = driDrawPriv;
 566          intelWindowMoved( intel );
 567       }
 568
 569       _mesa_make_current(&intel->ctx,
 570                          (GLframebuffer *) driDrawPriv->driverPrivate,
 571                          (GLframebuffer *) driReadPriv->driverPrivate);
 572
 573       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 574    } else {
 575       _mesa_make_current(NULL, NULL, NULL);
 576    }
 577
 578    return GL_TRUE;
 579 }
 580
 581
 582 static void intelContendedLock( struct intel_context *intel, GLuint flags )
 583 {
 584    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 585    __DRIscreenPrivate *sPriv = intel->driScreen;
 586    volatile drmI830Sarea * sarea = intel->sarea;
 587    int me = intel->hHWContext;
 588    int my_bufmgr = bmCtxId(intel);
 589
 590    drmGetLock(intel->driFd, intel->hHWContext, flags);
 591
 592    /* If the window moved, may need to set a new cliprect now.
 593     *
 594     * NOTE: This releases and regains the hw lock, so all state
 595     * checking must be done *after* this call:
 596     */
 597    if (dPriv)
 598       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 599
 600
 601    intel->locked = 1;
 602    intel->need_flush = 1;
 603
 604    /* Lost context?
 605     */
 606    if (sarea->ctxOwner != me) {
 607       DBG("Lost Context: sarea->ctxOwner %x me %x\n", sarea->ctxOwner, me);
 608       sarea->ctxOwner = me;
 609       intel->vtbl.lost_hardware( intel );
 610    }
 611
 612    /* As above, but don't evict the texture data on transitions
 613     * between contexts which all share a local buffer manager.
 614     */
 615    if (sarea->texAge != my_bufmgr) {
 616       DBG("Lost Textures: sarea->texAge %x my_bufmgr %x\n", sarea->ctxOwner, my_bufmgr);
 617       sarea->texAge = my_bufmgr;
 618       bm_fake_NotifyContendedLockTake( intel );
 619    }
 620
 621    /* Drawable changed?
 622     */
 623    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 624       intelWindowMoved( intel );
 625       intel->lastStamp = dPriv->lastStamp;
 626    }
 627 }
 628
 629 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 630
 631 /* Lock the hardware and validate our state.
 632  */
 633 void LOCK_HARDWARE( struct intel_context *intel )
 634 {
 635     char __ret=0;
 636
 637     _glthread_LOCK_MUTEX(lockMutex);
 638     assert(!intel->locked);
 639
 640
 641     DRM_CAS(intel->driHwLock, intel->hHWContext,
 642             (DRM_LOCK_HELD|intel->hHWContext), __ret);
 643     if (__ret)
 644         intelContendedLock( intel, 0 );
 645
 646    intel->locked = 1;
 647
 648    if (intel->aub_wrap) {
 649       bm_fake_NotifyContendedLockTake( intel );
 650       intel->vtbl.lost_hardware( intel );
 651       intel->vtbl.aub_wrap(intel);
 652       intel->aub_wrap = 0;
 653    }
 654
 655    if (bmError(intel)) {
 656       bmEvictAll(intel);
 657       intel->vtbl.lost_hardware( intel );
 658    }
 659
 660    /* Make sure nothing has been emitted prior to getting the lock:
 661     */
 662    assert(intel->batch->map == 0);
 663
 664    /* XXX: postpone, may not be needed:
 665     */
 666    if (!intel_batchbuffer_map(intel->batch)) {
 667       bmEvictAll(intel);
 668       intel->vtbl.lost_hardware( intel );
 669
 670       /* This could only fail if the batchbuffer was greater in size
 671        * than the available texture memory:
 672        */
 673       if (!intel_batchbuffer_map(intel->batch)) {
 674          _mesa_printf("double failure to map batchbuffer\n");
 675          assert(0);
 676       }
 677    }
 678 }
 679
 680
 681 /* Unlock the hardware using the global current context
 682  */
 683 void UNLOCK_HARDWARE( struct intel_context *intel )
 684 {
 685    /* Make sure everything has been released:
 686     */
 687    assert(intel->batch->ptr == intel->batch->map + intel->batch->offset);
 688
 689    intel_batchbuffer_unmap(intel->batch);
 690    intel->vtbl.note_unlock( intel );
 691    intel->locked = 0;
 692
 693
 694
 695    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 696    _glthread_UNLOCK_MUTEX(lockMutex);
 697 }
 698