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 const struct dri_extension arb_oc_extension =
 188     { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions};
 189
 190 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 191 {
 192         struct intel_context *intel = ctx?intel_context(ctx):NULL;
 193         driInitExtensions(ctx, card_extensions, enable_imaging);
 194         if (!ctx || intel->intelScreen->drmMinor >= 8)
 195                 driInitSingleExtension (ctx, &arb_oc_extension);
 196 }
 197
 198 static const struct dri_debug_control debug_control[] =
 199 {
 200     { "fall",  DEBUG_FALLBACKS },
 201     { "tex",   DEBUG_TEXTURE },
 202     { "ioctl", DEBUG_IOCTL },
 203     { "prim",  DEBUG_PRIMS },
 204     { "vert",  DEBUG_VERTS },
 205     { "state", DEBUG_STATE },
 206     { "verb",  DEBUG_VERBOSE },
 207     { "dri",   DEBUG_DRI },
 208     { "dma",   DEBUG_DMA },
 209     { "san",   DEBUG_SANITY },
 210     { "sync",  DEBUG_SYNC },
 211     { "sleep", DEBUG_SLEEP },
 212     { "pix",   DEBUG_PIXEL },
 213     { "buf",   DEBUG_BUFMGR },
 214     { "stats", DEBUG_STATS },
 215     { "tile",  DEBUG_TILE },
 216     { "sing",  DEBUG_SINGLE_THREAD },
 217     { "thre",  DEBUG_SINGLE_THREAD },
 218     { "wm",    DEBUG_WM },
 219     { "vs",    DEBUG_VS },
 220     { NULL,    0 }
 221 };
 222
 223
 224 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 225 {
 226    struct intel_context *intel = intel_context(ctx);
 227
 228    _swrast_InvalidateState( ctx, new_state );
 229    _swsetup_InvalidateState( ctx, new_state );
 230    _ac_InvalidateState( ctx, new_state );
 231    _tnl_InvalidateState( ctx, new_state );
 232    _tnl_invalidate_vertex_state( ctx, new_state );
 233
 234    intel->NewGLState |= new_state;
 235
 236    if (intel->vtbl.invalidate_state)
 237       intel->vtbl.invalidate_state( intel, new_state );
 238 }
 239
 240
 241 void intelFlush( GLcontext *ctx )
 242 {
 243    struct intel_context *intel = intel_context( ctx );
 244
 245    bmLockAndFence(intel);
 246 }
 247
 248 void intelFinish( GLcontext *ctx )
 249 {
 250    struct intel_context *intel = intel_context( ctx );
 251
 252    bmFinishFence(intel, bmLockAndFence(intel));
 253 }
 254
 255 static void
 256 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 257 {
 258         struct intel_context *intel = intel_context( ctx );
 259         drmI830MMIO io = {
 260                 .read_write = MMIO_WRITE,
 261                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 262                 .data = &q->Result
 263         };
 264         intel->stats_wm = GL_TRUE;
 265         intelFinish(&intel->ctx);
 266         drmCommandRead(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 267 }
 268
 269 static void
 270 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 271 {
 272         struct intel_context *intel = intel_context( ctx );
 273         GLuint64EXT tmp;
 274         drmI830MMIO io = {
 275                 .read_write = MMIO_READ,
 276                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 277                 .data = &tmp
 278         };
 279         intelFinish(&intel->ctx);
 280         drmCommandRead(intel->driFd, DRM_I830_MMIO, &io, sizeof(io));
 281         q->Result = tmp - q->Result;
 282         q->Ready = GL_TRUE;
 283         intel->stats_wm = GL_FALSE;
 284 }
 285
 286
 287 void intelInitDriverFunctions( struct dd_function_table *functions )
 288 {
 289    _mesa_init_driver_functions( functions );
 290
 291    functions->Flush = intelFlush;
 292    functions->Finish = intelFinish;
 293    functions->GetString = intelGetString;
 294    functions->UpdateState = intelInvalidateState;
 295    functions->BeginQuery = intelBeginQuery;
 296    functions->EndQuery = intelEndQuery;
 297
 298    /* CopyPixels can be accelerated even with the current memory
 299     * manager:
 300     */
 301    if (!getenv("INTEL_NO_BLIT")) {
 302       functions->CopyPixels = intelCopyPixels;
 303       functions->Bitmap = intelBitmap;
 304    }
 305
 306    intelInitTextureFuncs( functions );
 307    intelInitStateFuncs( functions );
 308    intelInitBufferFuncs( functions );
 309 }
 310
 311
 312
 313 GLboolean intelInitContext( struct intel_context *intel,
 314                             const __GLcontextModes *mesaVis,
 315                             __DRIcontextPrivate *driContextPriv,
 316                             void *sharedContextPrivate,
 317                             struct dd_function_table *functions )
 318 {
 319    GLcontext *ctx = &intel->ctx;
 320    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 321    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 322    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 323    volatile drmI830Sarea *saPriv = (volatile drmI830Sarea *)
 324       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 325
 326    if (!_mesa_initialize_context(&intel->ctx,
 327                                  mesaVis, shareCtx,
 328                                  functions,
 329                                  (void*) intel)) {
 330       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 331       return GL_FALSE;
 332    }
 333
 334    driContextPriv->driverPrivate = intel;
 335    intel->intelScreen = intelScreen;
 336    intel->driScreen = sPriv;
 337    intel->sarea = saPriv;
 338
 339
 340    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 341
 342    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 343       intel->strict_conformance = 1;
 344    }
 345
 346    if (intel->strict_conformance) {
 347       ctx->Const.MinLineWidth = 1.0;
 348       ctx->Const.MinLineWidthAA = 1.0;
 349       ctx->Const.MaxLineWidth = 1.0;
 350       ctx->Const.MaxLineWidthAA = 1.0;
 351       ctx->Const.LineWidthGranularity = 1.0;
 352    }
 353    else {
 354       ctx->Const.MinLineWidth = 1.0;
 355       ctx->Const.MinLineWidthAA = 1.0;
 356       ctx->Const.MaxLineWidth = 5.0;
 357       ctx->Const.MaxLineWidthAA = 5.0;
 358       ctx->Const.LineWidthGranularity = 0.5;
 359    }
 360
 361    ctx->Const.MinPointSize = 1.0;
 362    ctx->Const.MinPointSizeAA = 1.0;
 363    ctx->Const.MaxPointSize = 255.0;
 364    ctx->Const.MaxPointSizeAA = 3.0;
 365    ctx->Const.PointSizeGranularity = 1.0;
 366
 367    /* reinitialize the context point state.
 368     * It depend on constants in __GLcontextRec::Const
 369     */
 370    _mesa_init_point(ctx);
 371
 372    /* Initialize the software rasterizer and helper modules. */
 373    _swrast_CreateContext( ctx );
 374    _ac_CreateContext( ctx );
 375    _tnl_CreateContext( ctx );
 376    _swsetup_CreateContext( ctx );
 377
 378    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 379
 380    /* Configure swrast to match hardware characteristics: */
 381    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 382    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 383
 384    /* Dri stuff */
 385    intel->hHWContext = driContextPriv->hHWContext;
 386    intel->driFd = sPriv->fd;
 387    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 388
 389    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 390    intel->hw_stipple = 1;
 391
 392    switch(mesaVis->depthBits) {
 393    case 0:                      /* what to do in this case? */
 394    case 16:
 395       intel->depth_scale = 1.0/0xffff;
 396       intel->polygon_offset_scale = 1.0/0xffff;
 397       intel->depth_clear_mask = ~0;
 398       intel->ClearDepth = 0xffff;
 399       break;
 400    case 24:
 401       intel->depth_scale = 1.0/0xffffff;
 402       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 403       intel->depth_clear_mask = 0x00ffffff;
 404       intel->stencil_clear_mask = 0xff000000;
 405       intel->ClearDepth = 0x00ffffff;
 406       break;
 407    default:
 408       assert(0);
 409       break;
 410    }
 411
 412    /* Initialize swrast, tnl driver tables: */
 413    intelInitSpanFuncs( ctx );
 414
 415    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 416
 417    if (!intel->intelScreen->irq_active) {
 418       _mesa_printf("IRQs not active.  Exiting\n");
 419       exit(1);
 420    }
 421    intelInitExtensions(ctx, GL_TRUE);
 422
 423    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 424                                        debug_control );
 425
 426
 427    /* Buffer manager:
 428     */
 429    intel->bm = bm_fake_intel_Attach( intel );
 430
 431
 432    bmInitPool(intel,
 433               intel->intelScreen->tex.offset, /* low offset */
 434               intel->intelScreen->tex.map, /* low virtual */
 435               intel->intelScreen->tex.size,
 436               BM_MEM_AGP);
 437
 438    /* These are still static, but create regions for them.
 439     */
 440    intel->front_region =
 441       intel_region_create_static(intel,
 442                                  BM_MEM_AGP,
 443                                  intelScreen->front.offset,
 444                                  intelScreen->front.map,
 445                                  intelScreen->cpp,
 446                                  intelScreen->front.pitch / intelScreen->cpp,
 447                                  intelScreen->height,
 448                                  intelScreen->front.tiled != 0); /* 0: LINEAR */
 449
 450
 451    intel->back_region =
 452       intel_region_create_static(intel,
 453                                  BM_MEM_AGP,
 454                                  intelScreen->back.offset,
 455                                  intelScreen->back.map,
 456                                  intelScreen->cpp,
 457                                  intelScreen->back.pitch / intelScreen->cpp,
 458                                  intelScreen->height,
 459                                  intelScreen->back.tiled != 0);
 460
 461    /* Still assuming front.cpp == depth.cpp
 462     *
 463     * XXX: Setting tiling to false because Depth tiling only supports
 464     * YMAJOR but the blitter only supports XMAJOR tiling.  Have to
 465     * resolve later.
 466     */
 467    intel->depth_region =
 468       intel_region_create_static(intel,
 469                                  BM_MEM_AGP,
 470                                  intelScreen->depth.offset,
 471                                  intelScreen->depth.map,
 472                                  intelScreen->cpp,
 473                                  intelScreen->depth.pitch / intelScreen->cpp,
 474                                  intelScreen->height,
 475                                  intelScreen->depth.tiled != 0);
 476
 477    intel_bufferobj_init( intel );
 478    intel->batch = intel_batchbuffer_alloc( intel );
 479
 480    if (intel->ctx.Mesa_DXTn) {
 481       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 482       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 483    }
 484    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 485       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 486    }
 487
 488 /*    driInitTextureObjects( ctx, & intel->swapped, */
 489 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 490 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 491 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 492
 493
 494    if (getenv("INTEL_NO_RAST")) {
 495       fprintf(stderr, "disabling 3D rasterization\n");
 496       intel->no_rast = 1;
 497    }
 498
 499
 500    return GL_TRUE;
 501 }
 502
 503 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 504 {
 505    struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 506
 507    assert(intel); /* should never be null */
 508    if (intel) {
 509       GLboolean   release_texture_heaps;
 510
 511
 512       intel->vtbl.destroy( intel );
 513
 514       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 515       _swsetup_DestroyContext (&intel->ctx);
 516       _tnl_DestroyContext (&intel->ctx);
 517       _ac_DestroyContext (&intel->ctx);
 518
 519       _swrast_DestroyContext (&intel->ctx);
 520       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 521       intel_batchbuffer_free(intel->batch);
 522       intel->batch = NULL;
 523
 524
 525       if ( release_texture_heaps ) {
 526          /* This share group is about to go away, free our private
 527           * texture object data.
 528           */
 529
 530          /* XXX: destroy the shared bufmgr struct here?
 531           */
 532       }
 533
 534       /* Free the regions created to describe front/back/depth
 535        * buffers:
 536        */
 537 #if 0
 538       intel_region_release(intel, &intel->front_region);
 539       intel_region_release(intel, &intel->back_region);
 540       intel_region_release(intel, &intel->depth_region);
 541       intel_region_release(intel, &intel->draw_region);
 542 #endif
 543
 544       /* free the Mesa context */
 545       _mesa_destroy_context(&intel->ctx);
 546    }
 547
 548    driContextPriv->driverPrivate = NULL;
 549 }
 550
 551 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 552 {
 553    return GL_TRUE;
 554 }
 555
 556 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 557                           __DRIdrawablePrivate *driDrawPriv,
 558                           __DRIdrawablePrivate *driReadPriv)
 559 {
 560
 561    if (driContextPriv) {
 562       struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate;
 563
 564       if ( intel->driDrawable != driDrawPriv ) {
 565          /* Shouldn't the readbuffer be stored also? */
 566          intel->driDrawable = driDrawPriv;
 567          intelWindowMoved( intel );
 568       }
 569
 570       _mesa_make_current(&intel->ctx,
 571                          (GLframebuffer *) driDrawPriv->driverPrivate,
 572                          (GLframebuffer *) driReadPriv->driverPrivate);
 573
 574       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 575    } else {
 576       _mesa_make_current(NULL, NULL, NULL);
 577    }
 578
 579    return GL_TRUE;
 580 }
 581
 582
 583 static void intelContendedLock( struct intel_context *intel, GLuint flags )
 584 {
 585    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 586    __DRIscreenPrivate *sPriv = intel->driScreen;
 587    volatile drmI830Sarea * sarea = intel->sarea;
 588    int me = intel->hHWContext;
 589    int my_bufmgr = bmCtxId(intel);
 590
 591    drmGetLock(intel->driFd, intel->hHWContext, flags);
 592
 593    /* If the window moved, may need to set a new cliprect now.
 594     *
 595     * NOTE: This releases and regains the hw lock, so all state
 596     * checking must be done *after* this call:
 597     */
 598    if (dPriv)
 599       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 600
 601
 602    intel->locked = 1;
 603    intel->need_flush = 1;
 604
 605    /* Lost context?
 606     */
 607    if (sarea->ctxOwner != me) {
 608       DBG("Lost Context: sarea->ctxOwner %x me %x\n", sarea->ctxOwner, me);
 609       sarea->ctxOwner = me;
 610       intel->vtbl.lost_hardware( intel );
 611    }
 612
 613    /* As above, but don't evict the texture data on transitions
 614     * between contexts which all share a local buffer manager.
 615     */
 616    if (sarea->texAge != my_bufmgr) {
 617       DBG("Lost Textures: sarea->texAge %x my_bufmgr %x\n", sarea->ctxOwner, my_bufmgr);
 618       sarea->texAge = my_bufmgr;
 619       bm_fake_NotifyContendedLockTake( intel );
 620    }
 621
 622    /* Drawable changed?
 623     */
 624    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 625       intelWindowMoved( intel );
 626       intel->lastStamp = dPriv->lastStamp;
 627    }
 628 }
 629
 630 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 631
 632 /* Lock the hardware and validate our state.
 633  */
 634 void LOCK_HARDWARE( struct intel_context *intel )
 635 {
 636     char __ret=0;
 637
 638     _glthread_LOCK_MUTEX(lockMutex);
 639     assert(!intel->locked);
 640
 641
 642     DRM_CAS(intel->driHwLock, intel->hHWContext,
 643             (DRM_LOCK_HELD|intel->hHWContext), __ret);
 644     if (__ret)
 645         intelContendedLock( intel, 0 );
 646
 647    intel->locked = 1;
 648
 649    if (intel->aub_wrap) {
 650       bm_fake_NotifyContendedLockTake( intel );
 651       intel->vtbl.lost_hardware( intel );
 652       intel->vtbl.aub_wrap(intel);
 653       intel->aub_wrap = 0;
 654    }
 655
 656    if (bmError(intel)) {
 657       bmEvictAll(intel);
 658       intel->vtbl.lost_hardware( intel );
 659    }
 660
 661    /* Make sure nothing has been emitted prior to getting the lock:
 662     */
 663    assert(intel->batch->map == 0);
 664
 665    /* XXX: postpone, may not be needed:
 666     */
 667    if (!intel_batchbuffer_map(intel->batch)) {
 668       bmEvictAll(intel);
 669       intel->vtbl.lost_hardware( intel );
 670
 671       /* This could only fail if the batchbuffer was greater in size
 672        * than the available texture memory:
 673        */
 674       if (!intel_batchbuffer_map(intel->batch)) {
 675          _mesa_printf("double failure to map batchbuffer\n");
 676          assert(0);
 677       }
 678    }
 679 }
 680
 681
 682 /* Unlock the hardware using the global current context
 683  */
 684 void UNLOCK_HARDWARE( struct intel_context *intel )
 685 {
 686    /* Make sure everything has been released:
 687     */
 688    assert(intel->batch->ptr == intel->batch->map + intel->batch->offset);
 689
 690    intel_batchbuffer_unmap(intel->batch);
 691    intel->vtbl.note_unlock( intel );
 692    intel->locked = 0;
 693
 694
 695
 696    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 697    _glthread_UNLOCK_MUTEX(lockMutex);
 698 }
 699
 700