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_FAKE_FRONT_LEFT:
 239            rb = intel_fb->color_rb[0];
 240            region_name = "dri2 fake front buffer";
 241            break;
 242
 243        case __DRI_BUFFER_BACK_LEFT:
 244            rb = intel_fb->color_rb[1];
 245            region_name = "dri2 back buffer";
 246            break;
 247
 248        case __DRI_BUFFER_DEPTH:
 249            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 250            region_name = "dri2 depth buffer";
 251            break;
 252
 253        case __DRI_BUFFER_STENCIL:
 254            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 255            region_name = "dri2 stencil buffer";
 256            break;
 257
 258        case __DRI_BUFFER_ACCUM:
 259        default:
 260            fprintf(stderr,
 261                    "unhandled buffer attach event, attacment type %d\n",
 262                    buffers[i].attachment);
 263            return;
 264        }
 265
 266        if (rb == NULL)
 267           continue;
 268
 269        if (rb->region) {
 270           dri_bo_flink(rb->region->buffer, &name);
 271           if (name == buffers[i].name)
 272              continue;
 273        }
 274
 275        if (INTEL_DEBUG & DEBUG_DRI)
 276           fprintf(stderr,
 277                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 278                   buffers[i].name, buffers[i].attachment,
 279                   buffers[i].cpp, buffers[i].pitch);
 280
 281        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 282           if (INTEL_DEBUG & DEBUG_DRI)
 283              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 284           intel_region_reference(&region, depth_region);
 285        }
 286        else
 287           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 288                                                  drawable->w,
 289                                                  drawable->h,
 290                                                  buffers[i].pitch / buffers[i].cpp,
 291                                                  buffers[i].name,
 292                                                  region_name);
 293
 294        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 295           depth_region = region;
 296
 297        intel_renderbuffer_set_region(rb, region);
 298        intel_region_release(&region);
 299    }
 300
 301    driUpdateFramebufferSize(&intel->ctx, drawable);
 302 }
 303
 304 void
 305 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 306 {
 307     struct intel_context *intel = intel_context(ctx);
 308     __DRIcontext *driContext = intel->driContext;
 309     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 310                          GLsizei w, GLsizei h);
 311
 312     if (!driContext->driScreenPriv->dri2.enabled)
 313         return;
 314
 315     if (!intel->internal_viewport_call) {
 316        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 317        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 318           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 319     }
 320
 321     old_viewport = ctx->Driver.Viewport;
 322     ctx->Driver.Viewport = NULL;
 323     intel->driDrawable = driContext->driDrawablePriv;
 324     intelWindowMoved(intel);
 325     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 326     ctx->Driver.Viewport = old_viewport;
 327 }
 328
 329
 330 static const struct dri_debug_control debug_control[] = {
 331    { "tex",   DEBUG_TEXTURE},
 332    { "state", DEBUG_STATE},
 333    { "ioctl", DEBUG_IOCTL},
 334    { "blit",  DEBUG_BLIT},
 335    { "mip",   DEBUG_MIPTREE},
 336    { "fall",  DEBUG_FALLBACKS},
 337    { "verb",  DEBUG_VERBOSE},
 338    { "bat",   DEBUG_BATCH},
 339    { "pix",   DEBUG_PIXEL},
 340    { "buf",   DEBUG_BUFMGR},
 341    { "reg",   DEBUG_REGION},
 342    { "fbo",   DEBUG_FBO},
 343    { "lock",  DEBUG_LOCK},
 344    { "sync",  DEBUG_SYNC},
 345    { "prim",  DEBUG_PRIMS },
 346    { "vert",  DEBUG_VERTS },
 347    { "dri",   DEBUG_DRI },
 348    { "dma",   DEBUG_DMA },
 349    { "san",   DEBUG_SANITY },
 350    { "sleep", DEBUG_SLEEP },
 351    { "stats", DEBUG_STATS },
 352    { "tile",  DEBUG_TILE },
 353    { "sing",  DEBUG_SINGLE_THREAD },
 354    { "thre",  DEBUG_SINGLE_THREAD },
 355    { "wm",    DEBUG_WM },
 356    { "urb",   DEBUG_URB },
 357    { "vs",    DEBUG_VS },
 358    { NULL,    0 }
 359 };
 360
 361
 362 static void
 363 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 364 {
 365     struct intel_context *intel = intel_context(ctx);
 366
 367    _swrast_InvalidateState(ctx, new_state);
 368    _swsetup_InvalidateState(ctx, new_state);
 369    _vbo_InvalidateState(ctx, new_state);
 370    _tnl_InvalidateState(ctx, new_state);
 371    _tnl_invalidate_vertex_state(ctx, new_state);
 372
 373    intel->NewGLState |= new_state;
 374
 375    if (intel->vtbl.invalidate_state)
 376       intel->vtbl.invalidate_state( intel, new_state );
 377 }
 378
 379 static void
 380 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 381 {
 382    struct intel_context *intel = intel_context(ctx);
 383
 384    if (intel->Fallback)
 385       _swrast_flush(ctx);
 386
 387    if (!IS_965(intel->intelScreen->deviceID))
 388       INTEL_FIREVERTICES(intel);
 389
 390    /* Emit a flush so that any frontbuffer rendering that might have occurred
 391     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 392     * a flush for us.
 393     */
 394    if (needs_mi_flush)
 395       intel_batchbuffer_emit_mi_flush(intel->batch);
 396
 397    if (intel->batch->map != intel->batch->ptr)
 398       intel_batchbuffer_flush(intel->batch);
 399
 400    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 401       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 402
 403       if ((screen->dri2.loader->base.version >= 2)
 404           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 405          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 406                                                   intel->driDrawable->loaderPrivate);
 407
 408          /* Only clear the dirty bit if front-buffer rendering is no longer
 409           * enabled.  This is done so that the dirty bit can only be set in
 410           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 411           * each of N places that do rendering.  This has worse performances,
 412           * but it is much easier to get correct.
 413           */
 414          if (intel->is_front_buffer_rendering) {
 415             intel->front_buffer_dirty = GL_FALSE;
 416          }
 417       }
 418    }
 419 }
 420
 421 void
 422 intelFlush(GLcontext * ctx)
 423 {
 424    intel_flush(ctx, GL_FALSE);
 425 }
 426
 427 static void
 428 intel_glFlush(GLcontext *ctx)
 429 {
 430    intel_flush(ctx, GL_TRUE);
 431 }
 432
 433 void
 434 intelFinish(GLcontext * ctx)
 435 {
 436    struct gl_framebuffer *fb = ctx->DrawBuffer;
 437    int i;
 438
 439    intelFlush(ctx);
 440
 441    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 442        struct intel_renderbuffer *irb;
 443
 444        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 445
 446        if (irb->region)
 447           dri_bo_wait_rendering(irb->region->buffer);
 448    }
 449    if (fb->_DepthBuffer) {
 450       /* XXX: Wait on buffer idle */
 451    }
 452 }
 453
 454 void
 455 intelInitDriverFunctions(struct dd_function_table *functions)
 456 {
 457    _mesa_init_driver_functions(functions);
 458
 459    functions->Flush = intel_glFlush;
 460    functions->Finish = intelFinish;
 461    functions->GetString = intelGetString;
 462    functions->UpdateState = intelInvalidateState;
 463
 464    functions->CopyColorTable = _swrast_CopyColorTable;
 465    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 466    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 467    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 468
 469    intelInitTextureFuncs(functions);
 470    intelInitStateFuncs(functions);
 471    intelInitClearFuncs(functions);
 472    intelInitBufferFuncs(functions);
 473    intelInitPixelFuncs(functions);
 474 }
 475
 476
 477 GLboolean
 478 intelInitContext(struct intel_context *intel,
 479                  const __GLcontextModes * mesaVis,
 480                  __DRIcontextPrivate * driContextPriv,
 481                  void *sharedContextPrivate,
 482                  struct dd_function_table *functions)
 483 {
 484    GLcontext *ctx = &intel->ctx;
 485    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 486    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 487    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 488    int fthrottle_mode;
 489
 490    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 491                                  functions, (void *) intel)) {
 492       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 493       return GL_FALSE;
 494    }
 495
 496    driContextPriv->driverPrivate = intel;
 497    intel->intelScreen = intelScreen;
 498    intel->driScreen = sPriv;
 499    intel->sarea = intelScreen->sarea;
 500    intel->driContext = driContextPriv;
 501
 502    /* Dri stuff */
 503    intel->hHWContext = driContextPriv->hHWContext;
 504    intel->driFd = sPriv->fd;
 505    intel->driHwLock = sPriv->lock;
 506
 507    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 508                        intel->driScreen->myNum,
 509                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 510    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 511       intel->maxBatchSize = 4096;
 512    else
 513       intel->maxBatchSize = BATCH_SZ;
 514
 515    intel->bufmgr = intelScreen->bufmgr;
 516    intel->ttm = intelScreen->ttm;
 517    if (intel->ttm) {
 518       int bo_reuse_mode;
 519
 520       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 521       switch (bo_reuse_mode) {
 522       case DRI_CONF_BO_REUSE_DISABLED:
 523          break;
 524       case DRI_CONF_BO_REUSE_ALL:
 525          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 526          break;
 527       }
 528    }
 529
 530    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 531
 532    /* This doesn't yet catch all non-conformant rendering, but it's a
 533     * start.
 534     */
 535    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 536       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 537       if (value > 0) {
 538          intel->conformance_mode = value;
 539       }
 540       else {
 541          intel->conformance_mode = 1;
 542       }
 543    }
 544
 545    if (intel->conformance_mode > 0) {
 546       ctx->Const.MinLineWidth = 1.0;
 547       ctx->Const.MinLineWidthAA = 1.0;
 548       ctx->Const.MaxLineWidth = 1.0;
 549       ctx->Const.MaxLineWidthAA = 1.0;
 550       ctx->Const.LineWidthGranularity = 1.0;
 551    }
 552    else {
 553       ctx->Const.MinLineWidth = 1.0;
 554       ctx->Const.MinLineWidthAA = 1.0;
 555       ctx->Const.MaxLineWidth = 5.0;
 556       ctx->Const.MaxLineWidthAA = 5.0;
 557       ctx->Const.LineWidthGranularity = 0.5;
 558    }
 559
 560    ctx->Const.MinPointSize = 1.0;
 561    ctx->Const.MinPointSizeAA = 1.0;
 562    ctx->Const.MaxPointSize = 255.0;
 563    ctx->Const.MaxPointSizeAA = 3.0;
 564    ctx->Const.PointSizeGranularity = 1.0;
 565
 566    /* reinitialize the context point state.
 567     * It depend on constants in __GLcontextRec::Const
 568     */
 569    _mesa_init_point(ctx);
 570
 571    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 572
 573    /* Initialize the software rasterizer and helper modules. */
 574    _swrast_CreateContext(ctx);
 575    _vbo_CreateContext(ctx);
 576    _tnl_CreateContext(ctx);
 577    _swsetup_CreateContext(ctx);
 578
 579    /* Configure swrast to match hardware characteristics: */
 580    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 581    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 582
 583    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 584    intel->hw_stipple = 1;
 585
 586    /* XXX FBO: this doesn't seem to be used anywhere */
 587    switch (mesaVis->depthBits) {
 588    case 0:                     /* what to do in this case? */
 589    case 16:
 590       intel->polygon_offset_scale = 1.0;
 591       break;
 592    case 24:
 593       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 594       break;
 595    default:
 596       assert(0);
 597       break;
 598    }
 599
 600    if (IS_965(intelScreen->deviceID))
 601       intel->polygon_offset_scale /= 0xffff;
 602
 603    intel->RenderIndex = ~0;
 604
 605    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 606    intel->irqsEmitted = 0;
 607
 608    intel->do_irqs = (intel->intelScreen->irq_active &&
 609                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 610
 611    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 612
 613    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 614       _mesa_printf("IRQs not active.  Exiting\n");
 615       exit(1);
 616    }
 617
 618    intelInitExtensions(ctx, GL_FALSE);
 619
 620    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 621    if (INTEL_DEBUG & DEBUG_BUFMGR)
 622       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 623
 624    if (!sPriv->dri2.enabled)
 625       intel_recreate_static_regions(intel);
 626
 627    intel->batch = intel_batchbuffer_alloc(intel);
 628
 629    intel_bufferobj_init(intel);
 630    intel_fbo_init(intel);
 631
 632    if (intel->ctx.Mesa_DXTn) {
 633       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 634       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 635    }
 636    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 637       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 638    }
 639
 640    intel->prim.primitive = ~0;
 641
 642    /* Force all software fallbacks */
 643    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 644       fprintf(stderr, "disabling 3D rasterization\n");
 645       intel->no_rast = 1;
 646    }
 647
 648    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 649       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 650       intel->always_flush_batch = 1;
 651    }
 652
 653    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 654       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 655       intel->always_flush_cache = 1;
 656    }
 657
 658    /* Disable all hardware rendering (skip emitting batches and fences/waits
 659     * to the kernel)
 660     */
 661    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 662
 663    return GL_TRUE;
 664 }
 665
 666 void
 667 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 668 {
 669    struct intel_context *intel =
 670       (struct intel_context *) driContextPriv->driverPrivate;
 671
 672    assert(intel);               /* should never be null */
 673    if (intel) {
 674       GLboolean release_texture_heaps;
 675
 676       INTEL_FIREVERTICES(intel);
 677
 678       intel->vtbl.destroy(intel);
 679
 680       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 681       _swsetup_DestroyContext(&intel->ctx);
 682       _tnl_DestroyContext(&intel->ctx);
 683       _vbo_DestroyContext(&intel->ctx);
 684
 685       _swrast_DestroyContext(&intel->ctx);
 686       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 687
 688       intel_batchbuffer_free(intel->batch);
 689       intel->batch = NULL;
 690
 691       free(intel->prim.vb);
 692       intel->prim.vb = NULL;
 693       dri_bo_unreference(intel->prim.vb_bo);
 694       intel->prim.vb_bo = NULL;
 695
 696       if (release_texture_heaps) {
 697          /* This share group is about to go away, free our private
 698           * texture object data.
 699           */
 700          if (INTEL_DEBUG & DEBUG_TEXTURE)
 701             fprintf(stderr, "do something to free texture heaps\n");
 702       }
 703
 704       intel_region_release(&intel->front_region);
 705       intel_region_release(&intel->back_region);
 706       intel_region_release(&intel->depth_region);
 707
 708       driDestroyOptionCache(&intel->optionCache);
 709
 710       /* free the Mesa context */
 711       _mesa_free_context_data(&intel->ctx);
 712    }
 713 }
 714
 715 GLboolean
 716 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 717 {
 718    return GL_TRUE;
 719 }
 720
 721 GLboolean
 722 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 723                  __DRIdrawablePrivate * driDrawPriv,
 724                  __DRIdrawablePrivate * driReadPriv)
 725 {
 726    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 727
 728    if (driContextPriv) {
 729       struct intel_context *intel =
 730          (struct intel_context *) driContextPriv->driverPrivate;
 731       struct intel_framebuffer *intel_fb =
 732          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 733       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 734
 735       if (driContextPriv->driScreenPriv->dri2.enabled) {
 736           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 737           if (driDrawPriv != driReadPriv)
 738               intel_update_renderbuffers(driContextPriv, driReadPriv);
 739       } else {
 740           /* XXX FBO temporary fix-ups! */
 741           /* if the renderbuffers don't have regions, init them from the context */
 742          struct intel_renderbuffer *irbDepth
 743             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 744          struct intel_renderbuffer *irbStencil
 745             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 746
 747          if (intel_fb->color_rb[0]) {
 748             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 749                                           intel->front_region);
 750          }
 751          if (intel_fb->color_rb[1]) {
 752             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 753                                           intel->back_region);
 754          }
 755
 756          if (irbDepth) {
 757             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 758          }
 759          if (irbStencil) {
 760             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 761          }
 762       }
 763
 764       /* set GLframebuffer size to match window, if needed */
 765       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 766
 767       if (driReadPriv != driDrawPriv) {
 768          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 769       }
 770
 771       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 772
 773       /* The drawbuffer won't always be updated by _mesa_make_current:
 774        */
 775       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 776
 777          if (intel->driReadDrawable != driReadPriv)
 778             intel->driReadDrawable = driReadPriv;
 779
 780          if (intel->driDrawable != driDrawPriv) {
 781             if (driDrawPriv->swap_interval == (unsigned)-1) {
 782                int i;
 783
 784                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 785                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 786                  : VBLANK_FLAG_NO_IRQ;
 787
 788                /* Prevent error printf if one crtc is disabled, this will
 789                 * be properly calculated in intelWindowMoved() next.
 790                 */
 791                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 792
 793                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 794                driDrawableInitVBlank(driDrawPriv);
 795                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 796
 797                for (i = 0; i < 2; i++) {
 798                   if (intel_fb->color_rb[i])
 799                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 800                }
 801             }
 802             intel->driDrawable = driDrawPriv;
 803             intelWindowMoved(intel);
 804          }
 805
 806          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 807       }
 808    }
 809    else {
 810       _mesa_make_current(NULL, NULL, NULL);
 811    }
 812
 813    return GL_TRUE;
 814 }
 815
 816 static void
 817 intelContendedLock(struct intel_context *intel, GLuint flags)
 818 {
 819    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 820    __DRIscreenPrivate *sPriv = intel->driScreen;
 821    volatile drm_i915_sarea_t *sarea = intel->sarea;
 822    int me = intel->hHWContext;
 823
 824    drmGetLock(intel->driFd, intel->hHWContext, flags);
 825    intel->locked = 1;
 826
 827    if (INTEL_DEBUG & DEBUG_LOCK)
 828       _mesa_printf("%s - got contended lock\n", __progname);
 829
 830    /* If the window moved, may need to set a new cliprect now.
 831     *
 832     * NOTE: This releases and regains the hw lock, so all state
 833     * checking must be done *after* this call:
 834     */
 835    if (dPriv)
 836        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 837
 838    if (sarea && sarea->ctxOwner != me) {
 839       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 840          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 841                  sarea->ctxOwner, me);
 842       }
 843       sarea->ctxOwner = me;
 844    }
 845
 846    /* If the last consumer of the texture memory wasn't us, notify the fake
 847     * bufmgr and record the new owner.  We should have the memory shared
 848     * between contexts of a single fake bufmgr, but this will at least make
 849     * things correct for now.
 850     */
 851    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 852       sarea->texAge = intel->hHWContext;
 853       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 854       if (INTEL_DEBUG & DEBUG_BATCH)
 855          intel_decode_context_reset();
 856       if (INTEL_DEBUG & DEBUG_BUFMGR)
 857          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 858                  sarea->ctxOwner, intel->hHWContext);
 859    }
 860
 861    /* Drawable changed?
 862     */
 863    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 864        intelWindowMoved(intel);
 865        intel->lastStamp = dPriv->lastStamp;
 866    }
 867 }
 868
 869
 870 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 871
 872 /* Lock the hardware and validate our state.
 873  */
 874 void LOCK_HARDWARE( struct intel_context *intel )
 875 {
 876     __DRIdrawable *dPriv = intel->driDrawable;
 877     __DRIscreen *sPriv = intel->driScreen;
 878     char __ret = 0;
 879     struct intel_framebuffer *intel_fb = NULL;
 880     struct intel_renderbuffer *intel_rb = NULL;
 881
 882     _glthread_LOCK_MUTEX(lockMutex);
 883     assert(!intel->locked);
 884     intel->locked = 1;
 885
 886     if (intel->driDrawable) {
 887        intel_fb = intel->driDrawable->driverPrivate;
 888
 889        if (intel_fb)
 890           intel_rb =
 891              intel_get_renderbuffer(&intel_fb->Base,
 892                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 893     }
 894
 895     if (intel_rb && dPriv->vblFlags &&
 896         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 897         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 898         drmVBlank vbl;
 899
 900         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 901
 902         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 903             vbl.request.type |= DRM_VBLANK_SECONDARY;
 904         }
 905
 906         vbl.request.sequence = intel_rb->vbl_pending;
 907         drmWaitVBlank(intel->driFd, &vbl);
 908         intel_fb->vbl_waited = vbl.reply.sequence;
 909     }
 910
 911     if (!sPriv->dri2.enabled) {
 912         DRM_CAS(intel->driHwLock, intel->hHWContext,
 913                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
 914
 915         if (__ret)
 916             intelContendedLock( intel, 0 );
 917     }
 918
 919
 920     if (INTEL_DEBUG & DEBUG_LOCK)
 921       _mesa_printf("%s - locked\n", __progname);
 922 }
 923
 924
 925 /* Unlock the hardware using the global current context
 926  */
 927 void UNLOCK_HARDWARE( struct intel_context *intel )
 928 {
 929     __DRIscreen *sPriv = intel->driScreen;
 930
 931    intel->vtbl.note_unlock( intel );
 932    intel->locked = 0;
 933
 934    if (!sPriv->dri2.enabled)
 935       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 936
 937    _glthread_UNLOCK_MUTEX(lockMutex);
 938
 939    if (INTEL_DEBUG & DEBUG_LOCK)
 940       _mesa_printf("%s - unlocked\n", __progname);
 941
 942    /**
 943     * Nothing should be left in batch outside of LOCK/UNLOCK which references
 944     * cliprects.
 945     */
 946    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
 947       intel_batchbuffer_flush(intel->batch);
 948 }
 949