src/mesa/drivers/dri/intel/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 "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/extensions.h"
  32 #include "main/framebuffer.h"
  33 #include "main/imports.h"
  34 #include "main/points.h"
  35
  36 #include "swrast/swrast.h"
  37 #include "swrast_setup/swrast_setup.h"
  38 #include "tnl/tnl.h"
  39 #include "drivers/common/driverfuncs.h"
  40
  41 #include "i830_dri.h"
  42
  43 #include "intel_chipset.h"
  44 #include "intel_buffers.h"
  45 #include "intel_tex.h"
  46 #include "intel_batchbuffer.h"
  47 #include "intel_clear.h"
  48 #include "intel_extensions.h"
  49 #include "intel_pixel.h"
  50 #include "intel_regions.h"
  51 #include "intel_buffer_objects.h"
  52 #include "intel_fbo.h"
  53 #include "intel_decode.h"
  54 #include "intel_bufmgr.h"
  55 #include "intel_screen.h"
  56 #include "intel_swapbuffers.h"
  57
  58 #include "drirenderbuffer.h"
  59 #include "vblank.h"
  60 #include "utils.h"
  61 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  62
  63
  64 #ifndef INTEL_DEBUG
  65 int INTEL_DEBUG = (0);
  66 #endif
  67
  68
  69 #define DRIVER_DATE                     "20090114"
  70 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  71
  72
  73 static const GLubyte *
  74 intelGetString(GLcontext * ctx, GLenum name)
  75 {
  76    const struct intel_context *const intel = intel_context(ctx);
  77    const char *chipset;
  78    static char buffer[128];
  79
  80    switch (name) {
  81    case GL_VENDOR:
  82       return (GLubyte *) "Tungsten Graphics, Inc";
  83       break;
  84
  85    case GL_RENDERER:
  86       switch (intel->intelScreen->deviceID) {
  87       case PCI_CHIP_845_G:
  88          chipset = "Intel(R) 845G";
  89          break;
  90       case PCI_CHIP_I830_M:
  91          chipset = "Intel(R) 830M";
  92          break;
  93       case PCI_CHIP_I855_GM:
  94          chipset = "Intel(R) 852GM/855GM";
  95          break;
  96       case PCI_CHIP_I865_G:
  97          chipset = "Intel(R) 865G";
  98          break;
  99       case PCI_CHIP_I915_G:
 100          chipset = "Intel(R) 915G";
 101          break;
 102       case PCI_CHIP_E7221_G:
 103          chipset = "Intel (R) E7221G (i915)";
 104          break;
 105       case PCI_CHIP_I915_GM:
 106          chipset = "Intel(R) 915GM";
 107          break;
 108       case PCI_CHIP_I945_G:
 109          chipset = "Intel(R) 945G";
 110          break;
 111       case PCI_CHIP_I945_GM:
 112          chipset = "Intel(R) 945GM";
 113          break;
 114       case PCI_CHIP_I945_GME:
 115          chipset = "Intel(R) 945GME";
 116          break;
 117       case PCI_CHIP_G33_G:
 118          chipset = "Intel(R) G33";
 119          break;
 120       case PCI_CHIP_Q35_G:
 121          chipset = "Intel(R) Q35";
 122          break;
 123       case PCI_CHIP_Q33_G:
 124          chipset = "Intel(R) Q33";
 125          break;
 126       case PCI_CHIP_IGD_GM:
 127       case PCI_CHIP_IGD_G:
 128          chipset = "Intel(R) IGD";
 129          break;
 130       case PCI_CHIP_I965_Q:
 131          chipset = "Intel(R) 965Q";
 132          break;
 133       case PCI_CHIP_I965_G:
 134       case PCI_CHIP_I965_G_1:
 135          chipset = "Intel(R) 965G";
 136          break;
 137       case PCI_CHIP_I946_GZ:
 138          chipset = "Intel(R) 946GZ";
 139          break;
 140       case PCI_CHIP_I965_GM:
 141          chipset = "Intel(R) 965GM";
 142          break;
 143       case PCI_CHIP_I965_GME:
 144          chipset = "Intel(R) 965GME/GLE";
 145          break;
 146       case PCI_CHIP_GM45_GM:
 147          chipset = "Mobile Intel® GM45 Express Chipset";
 148          break;
 149       case PCI_CHIP_IGD_E_G:
 150          chipset = "Intel(R) Integrated Graphics Device";
 151          break;
 152       case PCI_CHIP_G45_G:
 153          chipset = "Intel(R) G45/G43";
 154          break;
 155       case PCI_CHIP_Q45_G:
 156          chipset = "Intel(R) Q45/Q43";
 157          break;
 158       case PCI_CHIP_G41_G:
 159          chipset = "Intel(R) G41";
 160          break;
 161       default:
 162          chipset = "Unknown Intel Chipset";
 163          break;
 164       }
 165
 166       (void) driGetRendererString(buffer, chipset,
 167                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 168                                   0);
 169       return (GLubyte *) buffer;
 170
 171    default:
 172       return NULL;
 173    }
 174 }
 175
 176 void
 177 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 178 {
 179    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 180    struct intel_renderbuffer *rb;
 181    struct intel_region *region, *depth_region;
 182    struct intel_context *intel = context->driverPrivate;
 183    __DRIbuffer *buffers;
 184    __DRIscreen *screen;
 185    int i, count;
 186    unsigned int attachments[10];
 187    uint32_t name;
 188    const char *region_name;
 189
 190    if (INTEL_DEBUG & DEBUG_DRI)
 191       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 192
 193    screen = intel->intelScreen->driScrnPriv;
 194
 195    i = 0;
 196    if (intel_fb->color_rb[0])
 197       attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 198    if (intel_fb->color_rb[1])
 199       attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 200    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 201       attachments[i++] = __DRI_BUFFER_DEPTH;
 202    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 203       attachments[i++] = __DRI_BUFFER_STENCIL;
 204
 205    buffers = (*screen->dri2.loader->getBuffers)(drawable,
 206                                                 &drawable->w,
 207                                                 &drawable->h,
 208                                                 attachments, i,
 209                                                 &count,
 210                                                 drawable->loaderPrivate);
 211
 212    if (buffers == NULL)
 213       return;
 214
 215    drawable->x = 0;
 216    drawable->y = 0;
 217    drawable->backX = 0;
 218    drawable->backY = 0;
 219    drawable->numClipRects = 1;
 220    drawable->pClipRects[0].x1 = 0;
 221    drawable->pClipRects[0].y1 = 0;
 222    drawable->pClipRects[0].x2 = drawable->w;
 223    drawable->pClipRects[0].y2 = drawable->h;
 224    drawable->numBackClipRects = 1;
 225    drawable->pBackClipRects[0].x1 = 0;
 226    drawable->pBackClipRects[0].y1 = 0;
 227    drawable->pBackClipRects[0].x2 = drawable->w;
 228    drawable->pBackClipRects[0].y2 = drawable->h;
 229
 230    depth_region = NULL;
 231    for (i = 0; i < count; i++) {
 232        switch (buffers[i].attachment) {
 233        case __DRI_BUFFER_FRONT_LEFT:
 234            rb = intel_fb->color_rb[0];
 235            region_name = "dri2 front buffer";
 236            break;
 237
 238        case __DRI_BUFFER_BACK_LEFT:
 239            rb = intel_fb->color_rb[1];
 240            region_name = "dri2 back buffer";
 241            break;
 242
 243        case __DRI_BUFFER_DEPTH:
 244            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 245            region_name = "dri2 depth buffer";
 246            break;
 247
 248        case __DRI_BUFFER_STENCIL:
 249            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 250            region_name = "dri2 stencil buffer";
 251            break;
 252
 253        case __DRI_BUFFER_ACCUM:
 254        default:
 255            fprintf(stderr,
 256                    "unhandled buffer attach event, attacment type %d\n",
 257                    buffers[i].attachment);
 258            return;
 259        }
 260
 261        if (rb == NULL)
 262           continue;
 263
 264        if (rb->region) {
 265           dri_bo_flink(rb->region->buffer, &name);
 266           if (name == buffers[i].name)
 267              continue;
 268        }
 269
 270        if (INTEL_DEBUG & DEBUG_DRI)
 271           fprintf(stderr,
 272                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 273                   buffers[i].name, buffers[i].attachment,
 274                   buffers[i].cpp, buffers[i].pitch);
 275
 276        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 277           if (INTEL_DEBUG & DEBUG_DRI)
 278              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 279           intel_region_reference(&region, depth_region);
 280        }
 281        else
 282           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 283                                                  drawable->w,
 284                                                  drawable->h,
 285                                                  buffers[i].pitch / buffers[i].cpp,
 286                                                  buffers[i].name,
 287                                                  region_name);
 288
 289        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 290           depth_region = region;
 291
 292        intel_renderbuffer_set_region(rb, region);
 293        intel_region_release(&region);
 294    }
 295
 296    driUpdateFramebufferSize(&intel->ctx, drawable);
 297 }
 298
 299 void
 300 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 301 {
 302     struct intel_context *intel = intel_context(ctx);
 303     __DRIcontext *driContext = intel->driContext;
 304     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 305                          GLsizei w, GLsizei h);
 306
 307     if (!driContext->driScreenPriv->dri2.enabled)
 308         return;
 309
 310     intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 311     if (driContext->driDrawablePriv != driContext->driReadablePriv)
 312         intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 313
 314     old_viewport = ctx->Driver.Viewport;
 315     ctx->Driver.Viewport = NULL;
 316     intel->driDrawable = driContext->driDrawablePriv;
 317     intelWindowMoved(intel);
 318     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 319     ctx->Driver.Viewport = old_viewport;
 320 }
 321
 322
 323 static const struct dri_debug_control debug_control[] = {
 324    { "tex",   DEBUG_TEXTURE},
 325    { "state", DEBUG_STATE},
 326    { "ioctl", DEBUG_IOCTL},
 327    { "blit",  DEBUG_BLIT},
 328    { "mip",   DEBUG_MIPTREE},
 329    { "fall",  DEBUG_FALLBACKS},
 330    { "verb",  DEBUG_VERBOSE},
 331    { "bat",   DEBUG_BATCH},
 332    { "pix",   DEBUG_PIXEL},
 333    { "buf",   DEBUG_BUFMGR},
 334    { "reg",   DEBUG_REGION},
 335    { "fbo",   DEBUG_FBO},
 336    { "lock",  DEBUG_LOCK},
 337    { "sync",  DEBUG_SYNC},
 338    { "prim",  DEBUG_PRIMS },
 339    { "vert",  DEBUG_VERTS },
 340    { "dri",   DEBUG_DRI },
 341    { "dma",   DEBUG_DMA },
 342    { "san",   DEBUG_SANITY },
 343    { "sleep", DEBUG_SLEEP },
 344    { "stats", DEBUG_STATS },
 345    { "tile",  DEBUG_TILE },
 346    { "sing",  DEBUG_SINGLE_THREAD },
 347    { "thre",  DEBUG_SINGLE_THREAD },
 348    { "wm",    DEBUG_WM },
 349    { "urb",   DEBUG_URB },
 350    { "vs",    DEBUG_VS },
 351    { NULL,    0 }
 352 };
 353
 354
 355 static void
 356 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 357 {
 358     struct intel_context *intel = intel_context(ctx);
 359
 360    _swrast_InvalidateState(ctx, new_state);
 361    _swsetup_InvalidateState(ctx, new_state);
 362    _vbo_InvalidateState(ctx, new_state);
 363    _tnl_InvalidateState(ctx, new_state);
 364    _tnl_invalidate_vertex_state(ctx, new_state);
 365
 366    intel->NewGLState |= new_state;
 367
 368    if (intel->vtbl.invalidate_state)
 369       intel->vtbl.invalidate_state( intel, new_state );
 370 }
 371
 372 static void
 373 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 374 {
 375    struct intel_context *intel = intel_context(ctx);
 376
 377    if (intel->Fallback)
 378       _swrast_flush(ctx);
 379
 380    if (!IS_965(intel->intelScreen->deviceID))
 381       INTEL_FIREVERTICES(intel);
 382
 383    /* Emit a flush so that any frontbuffer rendering that might have occurred
 384     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 385     * a flush for us.
 386     */
 387    if (needs_mi_flush)
 388       intel_batchbuffer_emit_mi_flush(intel->batch);
 389
 390    if (intel->batch->map != intel->batch->ptr)
 391       intel_batchbuffer_flush(intel->batch);
 392 }
 393
 394 void
 395 intelFlush(GLcontext * ctx)
 396 {
 397    intel_flush(ctx, GL_FALSE);
 398 }
 399
 400 static void
 401 intel_glFlush(GLcontext *ctx)
 402 {
 403    intel_flush(ctx, GL_TRUE);
 404 }
 405
 406 void
 407 intelFinish(GLcontext * ctx)
 408 {
 409    struct gl_framebuffer *fb = ctx->DrawBuffer;
 410    int i;
 411
 412    intelFlush(ctx);
 413
 414    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 415        struct intel_renderbuffer *irb;
 416
 417        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 418
 419        if (irb->region)
 420           dri_bo_wait_rendering(irb->region->buffer);
 421    }
 422    if (fb->_DepthBuffer) {
 423       /* XXX: Wait on buffer idle */
 424    }
 425 }
 426
 427 void
 428 intelInitDriverFunctions(struct dd_function_table *functions)
 429 {
 430    _mesa_init_driver_functions(functions);
 431
 432    functions->Flush = intel_glFlush;
 433    functions->Finish = intelFinish;
 434    functions->GetString = intelGetString;
 435    functions->UpdateState = intelInvalidateState;
 436
 437    functions->CopyColorTable = _swrast_CopyColorTable;
 438    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 439    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 440    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 441
 442    intelInitTextureFuncs(functions);
 443    intelInitStateFuncs(functions);
 444    intelInitClearFuncs(functions);
 445    intelInitBufferFuncs(functions);
 446    intelInitPixelFuncs(functions);
 447 }
 448
 449
 450 GLboolean
 451 intelInitContext(struct intel_context *intel,
 452                  const __GLcontextModes * mesaVis,
 453                  __DRIcontextPrivate * driContextPriv,
 454                  void *sharedContextPrivate,
 455                  struct dd_function_table *functions)
 456 {
 457    GLcontext *ctx = &intel->ctx;
 458    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 459    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 460    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 461    int fthrottle_mode;
 462
 463    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 464                                  functions, (void *) intel)) {
 465       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 466       return GL_FALSE;
 467    }
 468
 469    driContextPriv->driverPrivate = intel;
 470    intel->intelScreen = intelScreen;
 471    intel->driScreen = sPriv;
 472    intel->sarea = intelScreen->sarea;
 473    intel->driContext = driContextPriv;
 474
 475    /* Dri stuff */
 476    intel->hHWContext = driContextPriv->hHWContext;
 477    intel->driFd = sPriv->fd;
 478    intel->driHwLock = sPriv->lock;
 479
 480    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 481                        intel->driScreen->myNum,
 482                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 483    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 484       intel->maxBatchSize = 4096;
 485    else
 486       intel->maxBatchSize = BATCH_SZ;
 487
 488    intel->bufmgr = intelScreen->bufmgr;
 489    intel->ttm = intelScreen->ttm;
 490    if (intel->ttm) {
 491       int bo_reuse_mode;
 492
 493       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 494       switch (bo_reuse_mode) {
 495       case DRI_CONF_BO_REUSE_DISABLED:
 496          break;
 497       case DRI_CONF_BO_REUSE_ALL:
 498          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 499          break;
 500       }
 501    }
 502
 503    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 504
 505    /* This doesn't yet catch all non-conformant rendering, but it's a
 506     * start.
 507     */
 508    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 509       intel->strict_conformance = 1;
 510    }
 511
 512    if (intel->strict_conformance) {
 513       ctx->Const.MinLineWidth = 1.0;
 514       ctx->Const.MinLineWidthAA = 1.0;
 515       ctx->Const.MaxLineWidth = 1.0;
 516       ctx->Const.MaxLineWidthAA = 1.0;
 517       ctx->Const.LineWidthGranularity = 1.0;
 518    }
 519    else {
 520       ctx->Const.MinLineWidth = 1.0;
 521       ctx->Const.MinLineWidthAA = 1.0;
 522       ctx->Const.MaxLineWidth = 5.0;
 523       ctx->Const.MaxLineWidthAA = 5.0;
 524       ctx->Const.LineWidthGranularity = 0.5;
 525    }
 526
 527    ctx->Const.MinPointSize = 1.0;
 528    ctx->Const.MinPointSizeAA = 1.0;
 529    ctx->Const.MaxPointSize = 255.0;
 530    ctx->Const.MaxPointSizeAA = 3.0;
 531    ctx->Const.PointSizeGranularity = 1.0;
 532
 533    /* reinitialize the context point state.
 534     * It depend on constants in __GLcontextRec::Const
 535     */
 536    _mesa_init_point(ctx);
 537
 538    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 539
 540    /* Initialize the software rasterizer and helper modules. */
 541    _swrast_CreateContext(ctx);
 542    _vbo_CreateContext(ctx);
 543    _tnl_CreateContext(ctx);
 544    _swsetup_CreateContext(ctx);
 545
 546    /* Configure swrast to match hardware characteristics: */
 547    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 548    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 549
 550    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 551    intel->hw_stipple = 1;
 552
 553    /* XXX FBO: this doesn't seem to be used anywhere */
 554    switch (mesaVis->depthBits) {
 555    case 0:                     /* what to do in this case? */
 556    case 16:
 557       intel->polygon_offset_scale = 1.0;
 558       break;
 559    case 24:
 560       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 561       break;
 562    default:
 563       assert(0);
 564       break;
 565    }
 566
 567    if (IS_965(intelScreen->deviceID))
 568       intel->polygon_offset_scale /= 0xffff;
 569
 570    intel->RenderIndex = ~0;
 571
 572    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 573    intel->irqsEmitted = 0;
 574
 575    intel->do_irqs = (intel->intelScreen->irq_active &&
 576                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 577
 578    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 579
 580    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 581       _mesa_printf("IRQs not active.  Exiting\n");
 582       exit(1);
 583    }
 584
 585    intelInitExtensions(ctx, GL_FALSE);
 586
 587    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 588    if (INTEL_DEBUG & DEBUG_BUFMGR)
 589       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 590
 591    if (!sPriv->dri2.enabled)
 592       intel_recreate_static_regions(intel);
 593
 594    intel->batch = intel_batchbuffer_alloc(intel);
 595
 596    intel_bufferobj_init(intel);
 597    intel_fbo_init(intel);
 598
 599    if (intel->ctx.Mesa_DXTn) {
 600       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 601       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 602    }
 603    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 604       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 605    }
 606
 607    intel->prim.primitive = ~0;
 608
 609    /* Force all software fallbacks */
 610    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 611       fprintf(stderr, "disabling 3D rasterization\n");
 612       intel->no_rast = 1;
 613    }
 614
 615    /* Disable all hardware rendering (skip emitting batches and fences/waits
 616     * to the kernel)
 617     */
 618    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 619
 620    return GL_TRUE;
 621 }
 622
 623 void
 624 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 625 {
 626    struct intel_context *intel =
 627       (struct intel_context *) driContextPriv->driverPrivate;
 628
 629    assert(intel);               /* should never be null */
 630    if (intel) {
 631       GLboolean release_texture_heaps;
 632
 633       INTEL_FIREVERTICES(intel);
 634
 635       intel->vtbl.destroy(intel);
 636
 637       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 638       _swsetup_DestroyContext(&intel->ctx);
 639       _tnl_DestroyContext(&intel->ctx);
 640       _vbo_DestroyContext(&intel->ctx);
 641
 642       _swrast_DestroyContext(&intel->ctx);
 643       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 644
 645       intel_batchbuffer_free(intel->batch);
 646       intel->batch = NULL;
 647
 648       free(intel->prim.vb);
 649       intel->prim.vb = NULL;
 650       dri_bo_unreference(intel->prim.vb_bo);
 651       intel->prim.vb_bo = NULL;
 652
 653       if (release_texture_heaps) {
 654          /* This share group is about to go away, free our private
 655           * texture object data.
 656           */
 657          if (INTEL_DEBUG & DEBUG_TEXTURE)
 658             fprintf(stderr, "do something to free texture heaps\n");
 659       }
 660
 661       intel_region_release(&intel->front_region);
 662       intel_region_release(&intel->back_region);
 663       intel_region_release(&intel->depth_region);
 664
 665       driDestroyOptionCache(&intel->optionCache);
 666
 667       /* free the Mesa context */
 668       _mesa_free_context_data(&intel->ctx);
 669    }
 670 }
 671
 672 GLboolean
 673 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 674 {
 675    return GL_TRUE;
 676 }
 677
 678 GLboolean
 679 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 680                  __DRIdrawablePrivate * driDrawPriv,
 681                  __DRIdrawablePrivate * driReadPriv)
 682 {
 683    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 684
 685    if (driContextPriv) {
 686       struct intel_context *intel =
 687          (struct intel_context *) driContextPriv->driverPrivate;
 688       struct intel_framebuffer *intel_fb =
 689          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 690       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 691
 692       if (driContextPriv->driScreenPriv->dri2.enabled) {
 693           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 694           if (driDrawPriv != driReadPriv)
 695               intel_update_renderbuffers(driContextPriv, driReadPriv);
 696       } else {
 697           /* XXX FBO temporary fix-ups! */
 698           /* if the renderbuffers don't have regions, init them from the context */
 699          struct intel_renderbuffer *irbDepth
 700             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 701          struct intel_renderbuffer *irbStencil
 702             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 703
 704          if (intel_fb->color_rb[0]) {
 705             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 706                                           intel->front_region);
 707          }
 708          if (intel_fb->color_rb[1]) {
 709             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 710                                           intel->back_region);
 711          }
 712
 713          if (irbDepth) {
 714             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 715          }
 716          if (irbStencil) {
 717             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 718          }
 719       }
 720
 721       /* set GLframebuffer size to match window, if needed */
 722       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 723
 724       if (driReadPriv != driDrawPriv) {
 725          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 726       }
 727
 728       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 729
 730       /* The drawbuffer won't always be updated by _mesa_make_current:
 731        */
 732       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 733
 734          if (intel->driReadDrawable != driReadPriv)
 735             intel->driReadDrawable = driReadPriv;
 736
 737          if (intel->driDrawable != driDrawPriv) {
 738             if (driDrawPriv->swap_interval == (unsigned)-1) {
 739                int i;
 740
 741                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 742                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 743                  : VBLANK_FLAG_NO_IRQ;
 744
 745                /* Prevent error printf if one crtc is disabled, this will
 746                 * be properly calculated in intelWindowMoved() next.
 747                 */
 748                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 749
 750                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 751                driDrawableInitVBlank(driDrawPriv);
 752                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 753
 754                for (i = 0; i < 2; i++) {
 755                   if (intel_fb->color_rb[i])
 756                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 757                }
 758             }
 759             intel->driDrawable = driDrawPriv;
 760             intelWindowMoved(intel);
 761          }
 762
 763          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 764       }
 765    }
 766    else {
 767       _mesa_make_current(NULL, NULL, NULL);
 768    }
 769
 770    return GL_TRUE;
 771 }
 772
 773 static void
 774 intelContendedLock(struct intel_context *intel, GLuint flags)
 775 {
 776    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 777    __DRIscreenPrivate *sPriv = intel->driScreen;
 778    volatile drm_i915_sarea_t *sarea = intel->sarea;
 779    int me = intel->hHWContext;
 780
 781    drmGetLock(intel->driFd, intel->hHWContext, flags);
 782    intel->locked = 1;
 783
 784    if (INTEL_DEBUG & DEBUG_LOCK)
 785       _mesa_printf("%s - got contended lock\n", __progname);
 786
 787    /* If the window moved, may need to set a new cliprect now.
 788     *
 789     * NOTE: This releases and regains the hw lock, so all state
 790     * checking must be done *after* this call:
 791     */
 792    if (dPriv)
 793        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 794
 795    if (sarea && sarea->ctxOwner != me) {
 796       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 797          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 798                  sarea->ctxOwner, me);
 799       }
 800       sarea->ctxOwner = me;
 801    }
 802
 803    /* If the last consumer of the texture memory wasn't us, notify the fake
 804     * bufmgr and record the new owner.  We should have the memory shared
 805     * between contexts of a single fake bufmgr, but this will at least make
 806     * things correct for now.
 807     */
 808    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 809       sarea->texAge = intel->hHWContext;
 810       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 811       if (INTEL_DEBUG & DEBUG_BATCH)
 812          intel_decode_context_reset();
 813       if (INTEL_DEBUG & DEBUG_BUFMGR)
 814          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 815                  sarea->ctxOwner, intel->hHWContext);
 816    }
 817
 818    /* Drawable changed?
 819     */
 820    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 821        intelWindowMoved(intel);
 822        intel->lastStamp = dPriv->lastStamp;
 823    }
 824 }
 825
 826
 827 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 828
 829 /* Lock the hardware and validate our state.
 830  */
 831 void LOCK_HARDWARE( struct intel_context *intel )
 832 {
 833     __DRIdrawable *dPriv = intel->driDrawable;
 834     __DRIscreen *sPriv = intel->driScreen;
 835     char __ret = 0;
 836     struct intel_framebuffer *intel_fb = NULL;
 837     struct intel_renderbuffer *intel_rb = NULL;
 838
 839     _glthread_LOCK_MUTEX(lockMutex);
 840     assert(!intel->locked);
 841     intel->locked = 1;
 842
 843     if (intel->driDrawable) {
 844        intel_fb = intel->driDrawable->driverPrivate;
 845
 846        if (intel_fb)
 847           intel_rb =
 848              intel_get_renderbuffer(&intel_fb->Base,
 849                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 850     }
 851
 852     if (intel_rb && dPriv->vblFlags &&
 853         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 854         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 855         drmVBlank vbl;
 856
 857         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 858
 859         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 860             vbl.request.type |= DRM_VBLANK_SECONDARY;
 861         }
 862
 863         vbl.request.sequence = intel_rb->vbl_pending;
 864         drmWaitVBlank(intel->driFd, &vbl);
 865         intel_fb->vbl_waited = vbl.reply.sequence;
 866     }
 867
 868     if (!sPriv->dri2.enabled) {
 869         DRM_CAS(intel->driHwLock, intel->hHWContext,
 870                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
 871
 872         if (__ret)
 873             intelContendedLock( intel, 0 );
 874     }
 875
 876
 877     if (INTEL_DEBUG & DEBUG_LOCK)
 878       _mesa_printf("%s - locked\n", __progname);
 879 }
 880
 881
 882 /* Unlock the hardware using the global current context
 883  */
 884 void UNLOCK_HARDWARE( struct intel_context *intel )
 885 {
 886     __DRIscreen *sPriv = intel->driScreen;
 887
 888    intel->vtbl.note_unlock( intel );
 889    intel->locked = 0;
 890
 891    if (!sPriv->dri2.enabled)
 892       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 893
 894    _glthread_UNLOCK_MUTEX(lockMutex);
 895
 896    if (INTEL_DEBUG & DEBUG_LOCK)
 897       _mesa_printf("%s - unlocked\n", __progname);
 898
 899    /**
 900     * Nothing should be left in batch outside of LOCK/UNLOCK which references
 901     * cliprects.
 902     */
 903    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
 904       intel_batchbuffer_flush(intel->batch);
 905 }
 906