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_I965_Q:
 127          chipset = "Intel(R) 965Q";
 128          break;
 129       case PCI_CHIP_I965_G:
 130       case PCI_CHIP_I965_G_1:
 131          chipset = "Intel(R) 965G";
 132          break;
 133       case PCI_CHIP_I946_GZ:
 134          chipset = "Intel(R) 946GZ";
 135          break;
 136       case PCI_CHIP_I965_GM:
 137          chipset = "Intel(R) 965GM";
 138          break;
 139       case PCI_CHIP_I965_GME:
 140          chipset = "Intel(R) 965GME/GLE";
 141          break;
 142       case PCI_CHIP_GM45_GM:
 143          chipset = "Mobile Intel® GM45 Express Chipset";
 144          break;
 145       case PCI_CHIP_IGD_E_G:
 146          chipset = "Intel(R) Integrated Graphics Device";
 147          break;
 148       case PCI_CHIP_G45_G:
 149          chipset = "Intel(R) G45/G43";
 150          break;
 151       case PCI_CHIP_Q45_G:
 152          chipset = "Intel(R) Q45/Q43";
 153          break;
 154       case PCI_CHIP_G41_G:
 155          chipset = "Intel(R) G41";
 156          break;
 157       default:
 158          chipset = "Unknown Intel Chipset";
 159          break;
 160       }
 161
 162       (void) driGetRendererString(buffer, chipset,
 163                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 164                                   0);
 165       return (GLubyte *) buffer;
 166
 167    default:
 168       return NULL;
 169    }
 170 }
 171
 172 void
 173 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 174 {
 175    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 176    struct intel_renderbuffer *rb;
 177    struct intel_region *region, *depth_region;
 178    struct intel_context *intel = context->driverPrivate;
 179    __DRIbuffer *buffers;
 180    __DRIscreen *screen;
 181    int i, count;
 182    unsigned int attachments[10];
 183    uint32_t name;
 184    const char *region_name;
 185
 186    if (INTEL_DEBUG & DEBUG_DRI)
 187       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 188
 189    screen = intel->intelScreen->driScrnPriv;
 190
 191    i = 0;
 192    if (intel_fb->color_rb[0])
 193       attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 194    if (intel_fb->color_rb[1])
 195       attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 196    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 197       attachments[i++] = __DRI_BUFFER_DEPTH;
 198    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 199       attachments[i++] = __DRI_BUFFER_STENCIL;
 200
 201    buffers = (*screen->dri2.loader->getBuffers)(drawable,
 202                                                 &drawable->w,
 203                                                 &drawable->h,
 204                                                 attachments, i,
 205                                                 &count,
 206                                                 drawable->loaderPrivate);
 207
 208    if (buffers == NULL)
 209       return;
 210
 211    drawable->x = 0;
 212    drawable->y = 0;
 213    drawable->backX = 0;
 214    drawable->backY = 0;
 215    drawable->numClipRects = 1;
 216    drawable->pClipRects[0].x1 = 0;
 217    drawable->pClipRects[0].y1 = 0;
 218    drawable->pClipRects[0].x2 = drawable->w;
 219    drawable->pClipRects[0].y2 = drawable->h;
 220    drawable->numBackClipRects = 1;
 221    drawable->pBackClipRects[0].x1 = 0;
 222    drawable->pBackClipRects[0].y1 = 0;
 223    drawable->pBackClipRects[0].x2 = drawable->w;
 224    drawable->pBackClipRects[0].y2 = drawable->h;
 225
 226    depth_region = NULL;
 227    for (i = 0; i < count; i++) {
 228        switch (buffers[i].attachment) {
 229        case __DRI_BUFFER_FRONT_LEFT:
 230            rb = intel_fb->color_rb[0];
 231            region_name = "dri2 front buffer";
 232            break;
 233
 234        case __DRI_BUFFER_BACK_LEFT:
 235            rb = intel_fb->color_rb[1];
 236            region_name = "dri2 back buffer";
 237            break;
 238
 239        case __DRI_BUFFER_DEPTH:
 240            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 241            region_name = "dri2 depth buffer";
 242            break;
 243
 244        case __DRI_BUFFER_STENCIL:
 245            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 246            region_name = "dri2 stencil buffer";
 247            break;
 248
 249        case __DRI_BUFFER_ACCUM:
 250        default:
 251            fprintf(stderr,
 252                    "unhandled buffer attach event, attacment type %d\n",
 253                    buffers[i].attachment);
 254            return;
 255        }
 256
 257        if (rb == NULL)
 258           continue;
 259
 260        if (rb->region) {
 261           dri_bo_flink(rb->region->buffer, &name);
 262           if (name == buffers[i].name)
 263              continue;
 264        }
 265
 266        if (INTEL_DEBUG & DEBUG_DRI)
 267           fprintf(stderr,
 268                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 269                   buffers[i].name, buffers[i].attachment,
 270                   buffers[i].cpp, buffers[i].pitch);
 271
 272        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 273           if (INTEL_DEBUG & DEBUG_DRI)
 274              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 275           intel_region_reference(&region, depth_region);
 276        }
 277        else
 278           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 279                                                  drawable->w,
 280                                                  drawable->h,
 281                                                  buffers[i].pitch / buffers[i].cpp,
 282                                                  buffers[i].name,
 283                                                  region_name);
 284
 285        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 286           depth_region = region;
 287
 288        intel_renderbuffer_set_region(rb, region);
 289        intel_region_release(&region);
 290    }
 291
 292    driUpdateFramebufferSize(&intel->ctx, drawable);
 293 }
 294
 295 void
 296 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 297 {
 298     struct intel_context *intel = intel_context(ctx);
 299     __DRIcontext *driContext = intel->driContext;
 300     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 301                          GLsizei w, GLsizei h);
 302
 303     if (!driContext->driScreenPriv->dri2.enabled)
 304         return;
 305
 306     intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 307     if (driContext->driDrawablePriv != driContext->driReadablePriv)
 308         intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 309
 310     old_viewport = ctx->Driver.Viewport;
 311     ctx->Driver.Viewport = NULL;
 312     intel->driDrawable = driContext->driDrawablePriv;
 313     intelWindowMoved(intel);
 314     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 315     ctx->Driver.Viewport = old_viewport;
 316 }
 317
 318
 319 static const struct dri_debug_control debug_control[] = {
 320    { "tex",   DEBUG_TEXTURE},
 321    { "state", DEBUG_STATE},
 322    { "ioctl", DEBUG_IOCTL},
 323    { "blit",  DEBUG_BLIT},
 324    { "mip",   DEBUG_MIPTREE},
 325    { "fall",  DEBUG_FALLBACKS},
 326    { "verb",  DEBUG_VERBOSE},
 327    { "bat",   DEBUG_BATCH},
 328    { "pix",   DEBUG_PIXEL},
 329    { "buf",   DEBUG_BUFMGR},
 330    { "reg",   DEBUG_REGION},
 331    { "fbo",   DEBUG_FBO},
 332    { "lock",  DEBUG_LOCK},
 333    { "sync",  DEBUG_SYNC},
 334    { "prim",  DEBUG_PRIMS },
 335    { "vert",  DEBUG_VERTS },
 336    { "dri",   DEBUG_DRI },
 337    { "dma",   DEBUG_DMA },
 338    { "san",   DEBUG_SANITY },
 339    { "sleep", DEBUG_SLEEP },
 340    { "stats", DEBUG_STATS },
 341    { "tile",  DEBUG_TILE },
 342    { "sing",  DEBUG_SINGLE_THREAD },
 343    { "thre",  DEBUG_SINGLE_THREAD },
 344    { "wm",    DEBUG_WM },
 345    { "urb",   DEBUG_URB },
 346    { "vs",    DEBUG_VS },
 347    { NULL,    0 }
 348 };
 349
 350
 351 static void
 352 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 353 {
 354     struct intel_context *intel = intel_context(ctx);
 355
 356    _swrast_InvalidateState(ctx, new_state);
 357    _swsetup_InvalidateState(ctx, new_state);
 358    _vbo_InvalidateState(ctx, new_state);
 359    _tnl_InvalidateState(ctx, new_state);
 360    _tnl_invalidate_vertex_state(ctx, new_state);
 361
 362    intel->NewGLState |= new_state;
 363
 364    if (intel->vtbl.invalidate_state)
 365       intel->vtbl.invalidate_state( intel, new_state );
 366 }
 367
 368 static void
 369 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 370 {
 371    struct intel_context *intel = intel_context(ctx);
 372
 373    if (intel->Fallback)
 374       _swrast_flush(ctx);
 375
 376    if (!IS_965(intel->intelScreen->deviceID))
 377       INTEL_FIREVERTICES(intel);
 378
 379    /* Emit a flush so that any frontbuffer rendering that might have occurred
 380     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 381     * a flush for us.
 382     */
 383    if (needs_mi_flush)
 384       intel_batchbuffer_emit_mi_flush(intel->batch);
 385
 386    if (intel->batch->map != intel->batch->ptr)
 387       intel_batchbuffer_flush(intel->batch);
 388 }
 389
 390 void
 391 intelFlush(GLcontext * ctx)
 392 {
 393    intel_flush(ctx, GL_FALSE);
 394 }
 395
 396 static void
 397 intel_glFlush(GLcontext *ctx)
 398 {
 399    intel_flush(ctx, GL_TRUE);
 400 }
 401
 402 void
 403 intelFinish(GLcontext * ctx)
 404 {
 405    struct gl_framebuffer *fb = ctx->DrawBuffer;
 406    int i;
 407
 408    intelFlush(ctx);
 409
 410    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 411        struct intel_renderbuffer *irb;
 412
 413        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 414
 415        if (irb->region)
 416           dri_bo_wait_rendering(irb->region->buffer);
 417    }
 418    if (fb->_DepthBuffer) {
 419       /* XXX: Wait on buffer idle */
 420    }
 421 }
 422
 423 void
 424 intelInitDriverFunctions(struct dd_function_table *functions)
 425 {
 426    _mesa_init_driver_functions(functions);
 427
 428    functions->Flush = intel_glFlush;
 429    functions->Finish = intelFinish;
 430    functions->GetString = intelGetString;
 431    functions->UpdateState = intelInvalidateState;
 432
 433    functions->CopyColorTable = _swrast_CopyColorTable;
 434    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 435    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 436    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 437
 438    intelInitTextureFuncs(functions);
 439    intelInitStateFuncs(functions);
 440    intelInitClearFuncs(functions);
 441    intelInitBufferFuncs(functions);
 442    intelInitPixelFuncs(functions);
 443 }
 444
 445
 446 GLboolean
 447 intelInitContext(struct intel_context *intel,
 448                  const __GLcontextModes * mesaVis,
 449                  __DRIcontextPrivate * driContextPriv,
 450                  void *sharedContextPrivate,
 451                  struct dd_function_table *functions)
 452 {
 453    GLcontext *ctx = &intel->ctx;
 454    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 455    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 456    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 457    int fthrottle_mode;
 458
 459    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 460                                  functions, (void *) intel)) {
 461       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 462       return GL_FALSE;
 463    }
 464
 465    driContextPriv->driverPrivate = intel;
 466    intel->intelScreen = intelScreen;
 467    intel->driScreen = sPriv;
 468    intel->sarea = intelScreen->sarea;
 469    intel->driContext = driContextPriv;
 470
 471    /* Dri stuff */
 472    intel->hHWContext = driContextPriv->hHWContext;
 473    intel->driFd = sPriv->fd;
 474    intel->driHwLock = sPriv->lock;
 475
 476    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 477                        intel->driScreen->myNum,
 478                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 479    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 480       intel->maxBatchSize = 4096;
 481    else
 482       intel->maxBatchSize = BATCH_SZ;
 483
 484    intel->bufmgr = intelScreen->bufmgr;
 485    intel->ttm = intelScreen->ttm;
 486    if (intel->ttm) {
 487       int bo_reuse_mode;
 488
 489       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 490       switch (bo_reuse_mode) {
 491       case DRI_CONF_BO_REUSE_DISABLED:
 492          break;
 493       case DRI_CONF_BO_REUSE_ALL:
 494          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 495          break;
 496       }
 497    }
 498
 499    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 500
 501    /* This doesn't yet catch all non-conformant rendering, but it's a
 502     * start.
 503     */
 504    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 505       intel->strict_conformance = 1;
 506    }
 507
 508    if (intel->strict_conformance) {
 509       ctx->Const.MinLineWidth = 1.0;
 510       ctx->Const.MinLineWidthAA = 1.0;
 511       ctx->Const.MaxLineWidth = 1.0;
 512       ctx->Const.MaxLineWidthAA = 1.0;
 513       ctx->Const.LineWidthGranularity = 1.0;
 514    }
 515    else {
 516       ctx->Const.MinLineWidth = 1.0;
 517       ctx->Const.MinLineWidthAA = 1.0;
 518       ctx->Const.MaxLineWidth = 5.0;
 519       ctx->Const.MaxLineWidthAA = 5.0;
 520       ctx->Const.LineWidthGranularity = 0.5;
 521    }
 522
 523    ctx->Const.MinPointSize = 1.0;
 524    ctx->Const.MinPointSizeAA = 1.0;
 525    ctx->Const.MaxPointSize = 255.0;
 526    ctx->Const.MaxPointSizeAA = 3.0;
 527    ctx->Const.PointSizeGranularity = 1.0;
 528
 529    /* reinitialize the context point state.
 530     * It depend on constants in __GLcontextRec::Const
 531     */
 532    _mesa_init_point(ctx);
 533
 534    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 535
 536    /* Initialize the software rasterizer and helper modules. */
 537    _swrast_CreateContext(ctx);
 538    _vbo_CreateContext(ctx);
 539    _tnl_CreateContext(ctx);
 540    _swsetup_CreateContext(ctx);
 541
 542    /* Configure swrast to match hardware characteristics: */
 543    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 544    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 545
 546    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 547    intel->hw_stipple = 1;
 548
 549    /* XXX FBO: this doesn't seem to be used anywhere */
 550    switch (mesaVis->depthBits) {
 551    case 0:                     /* what to do in this case? */
 552    case 16:
 553       intel->polygon_offset_scale = 1.0;
 554       break;
 555    case 24:
 556       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 557       break;
 558    default:
 559       assert(0);
 560       break;
 561    }
 562
 563    if (IS_965(intelScreen->deviceID))
 564       intel->polygon_offset_scale /= 0xffff;
 565
 566    intel->RenderIndex = ~0;
 567
 568    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 569    intel->irqsEmitted = 0;
 570
 571    intel->do_irqs = (intel->intelScreen->irq_active &&
 572                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 573
 574    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 575
 576    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 577       _mesa_printf("IRQs not active.  Exiting\n");
 578       exit(1);
 579    }
 580
 581    intelInitExtensions(ctx, GL_FALSE);
 582
 583    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 584    if (INTEL_DEBUG & DEBUG_BUFMGR)
 585       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 586
 587    if (!sPriv->dri2.enabled)
 588       intel_recreate_static_regions(intel);
 589
 590    intel->batch = intel_batchbuffer_alloc(intel);
 591
 592    intel_bufferobj_init(intel);
 593    intel_fbo_init(intel);
 594
 595    if (intel->ctx.Mesa_DXTn) {
 596       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 597       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 598    }
 599    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 600       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 601    }
 602
 603    intel->prim.primitive = ~0;
 604
 605    /* Force all software fallbacks */
 606    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 607       fprintf(stderr, "disabling 3D rasterization\n");
 608       intel->no_rast = 1;
 609    }
 610
 611    /* Disable all hardware rendering (skip emitting batches and fences/waits
 612     * to the kernel)
 613     */
 614    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 615
 616    return GL_TRUE;
 617 }
 618
 619 void
 620 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 621 {
 622    struct intel_context *intel =
 623       (struct intel_context *) driContextPriv->driverPrivate;
 624
 625    assert(intel);               /* should never be null */
 626    if (intel) {
 627       GLboolean release_texture_heaps;
 628
 629       INTEL_FIREVERTICES(intel);
 630
 631       intel->vtbl.destroy(intel);
 632
 633       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 634       _swsetup_DestroyContext(&intel->ctx);
 635       _tnl_DestroyContext(&intel->ctx);
 636       _vbo_DestroyContext(&intel->ctx);
 637
 638       _swrast_DestroyContext(&intel->ctx);
 639       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 640
 641       intel_batchbuffer_free(intel->batch);
 642       intel->batch = NULL;
 643
 644       free(intel->prim.vb);
 645       intel->prim.vb = NULL;
 646       dri_bo_unreference(intel->prim.vb_bo);
 647       intel->prim.vb_bo = NULL;
 648
 649       if (release_texture_heaps) {
 650          /* This share group is about to go away, free our private
 651           * texture object data.
 652           */
 653          if (INTEL_DEBUG & DEBUG_TEXTURE)
 654             fprintf(stderr, "do something to free texture heaps\n");
 655       }
 656
 657       intel_region_release(&intel->front_region);
 658       intel_region_release(&intel->back_region);
 659       intel_region_release(&intel->depth_region);
 660
 661       driDestroyOptionCache(&intel->optionCache);
 662
 663       /* free the Mesa context */
 664       _mesa_free_context_data(&intel->ctx);
 665    }
 666 }
 667
 668 GLboolean
 669 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 670 {
 671    return GL_TRUE;
 672 }
 673
 674 GLboolean
 675 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 676                  __DRIdrawablePrivate * driDrawPriv,
 677                  __DRIdrawablePrivate * driReadPriv)
 678 {
 679    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 680
 681    if (driContextPriv) {
 682       struct intel_context *intel =
 683          (struct intel_context *) driContextPriv->driverPrivate;
 684       struct intel_framebuffer *intel_fb =
 685          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 686       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 687
 688       if (driContextPriv->driScreenPriv->dri2.enabled) {
 689           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 690           if (driDrawPriv != driReadPriv)
 691               intel_update_renderbuffers(driContextPriv, driReadPriv);
 692       } else {
 693           /* XXX FBO temporary fix-ups! */
 694           /* if the renderbuffers don't have regions, init them from the context */
 695          struct intel_renderbuffer *irbDepth
 696             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 697          struct intel_renderbuffer *irbStencil
 698             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 699
 700          if (intel_fb->color_rb[0]) {
 701             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 702                                           intel->front_region);
 703          }
 704          if (intel_fb->color_rb[1]) {
 705             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 706                                           intel->back_region);
 707          }
 708
 709          if (irbDepth) {
 710             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 711          }
 712          if (irbStencil) {
 713             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 714          }
 715       }
 716
 717       /* set GLframebuffer size to match window, if needed */
 718       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 719
 720       if (driReadPriv != driDrawPriv) {
 721          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 722       }
 723
 724       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 725
 726       /* The drawbuffer won't always be updated by _mesa_make_current:
 727        */
 728       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 729
 730          if (intel->driReadDrawable != driReadPriv)
 731             intel->driReadDrawable = driReadPriv;
 732
 733          if (intel->driDrawable != driDrawPriv) {
 734             if (driDrawPriv->swap_interval == (unsigned)-1) {
 735                int i;
 736
 737                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 738                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 739                  : VBLANK_FLAG_NO_IRQ;
 740
 741                /* Prevent error printf if one crtc is disabled, this will
 742                 * be properly calculated in intelWindowMoved() next.
 743                 */
 744                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 745
 746                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 747                driDrawableInitVBlank(driDrawPriv);
 748                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 749
 750                for (i = 0; i < 2; i++) {
 751                   if (intel_fb->color_rb[i])
 752                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 753                }
 754             }
 755             intel->driDrawable = driDrawPriv;
 756             intelWindowMoved(intel);
 757          }
 758
 759          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 760       }
 761    }
 762    else {
 763       _mesa_make_current(NULL, NULL, NULL);
 764    }
 765
 766    return GL_TRUE;
 767 }
 768
 769 static void
 770 intelContendedLock(struct intel_context *intel, GLuint flags)
 771 {
 772    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 773    __DRIscreenPrivate *sPriv = intel->driScreen;
 774    volatile drm_i915_sarea_t *sarea = intel->sarea;
 775    int me = intel->hHWContext;
 776
 777    drmGetLock(intel->driFd, intel->hHWContext, flags);
 778    intel->locked = 1;
 779
 780    if (INTEL_DEBUG & DEBUG_LOCK)
 781       _mesa_printf("%s - got contended lock\n", __progname);
 782
 783    /* If the window moved, may need to set a new cliprect now.
 784     *
 785     * NOTE: This releases and regains the hw lock, so all state
 786     * checking must be done *after* this call:
 787     */
 788    if (dPriv)
 789        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 790
 791    if (sarea && sarea->ctxOwner != me) {
 792       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 793          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 794                  sarea->ctxOwner, me);
 795       }
 796       sarea->ctxOwner = me;
 797    }
 798
 799    /* If the last consumer of the texture memory wasn't us, notify the fake
 800     * bufmgr and record the new owner.  We should have the memory shared
 801     * between contexts of a single fake bufmgr, but this will at least make
 802     * things correct for now.
 803     */
 804    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 805       sarea->texAge = intel->hHWContext;
 806       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 807       if (INTEL_DEBUG & DEBUG_BATCH)
 808          intel_decode_context_reset();
 809       if (INTEL_DEBUG & DEBUG_BUFMGR)
 810          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 811                  sarea->ctxOwner, intel->hHWContext);
 812    }
 813
 814    /* Drawable changed?
 815     */
 816    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 817        intelWindowMoved(intel);
 818        intel->lastStamp = dPriv->lastStamp;
 819    }
 820 }
 821
 822
 823 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 824
 825 /* Lock the hardware and validate our state.
 826  */
 827 void LOCK_HARDWARE( struct intel_context *intel )
 828 {
 829     __DRIdrawable *dPriv = intel->driDrawable;
 830     __DRIscreen *sPriv = intel->driScreen;
 831     char __ret = 0;
 832     struct intel_framebuffer *intel_fb = NULL;
 833     struct intel_renderbuffer *intel_rb = NULL;
 834
 835     _glthread_LOCK_MUTEX(lockMutex);
 836     assert(!intel->locked);
 837     intel->locked = 1;
 838
 839     if (intel->driDrawable) {
 840        intel_fb = intel->driDrawable->driverPrivate;
 841
 842        if (intel_fb)
 843           intel_rb =
 844              intel_get_renderbuffer(&intel_fb->Base,
 845                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 846     }
 847
 848     if (intel_rb && dPriv->vblFlags &&
 849         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 850         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 851         drmVBlank vbl;
 852
 853         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 854
 855         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 856             vbl.request.type |= DRM_VBLANK_SECONDARY;
 857         }
 858
 859         vbl.request.sequence = intel_rb->vbl_pending;
 860         drmWaitVBlank(intel->driFd, &vbl);
 861         intel_fb->vbl_waited = vbl.reply.sequence;
 862     }
 863
 864     if (!sPriv->dri2.enabled) {
 865         DRM_CAS(intel->driHwLock, intel->hHWContext,
 866                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
 867
 868         if (__ret)
 869             intelContendedLock( intel, 0 );
 870     }
 871
 872
 873     if (INTEL_DEBUG & DEBUG_LOCK)
 874       _mesa_printf("%s - locked\n", __progname);
 875 }
 876
 877
 878 /* Unlock the hardware using the global current context
 879  */
 880 void UNLOCK_HARDWARE( struct intel_context *intel )
 881 {
 882     __DRIscreen *sPriv = intel->driScreen;
 883
 884    intel->vtbl.note_unlock( intel );
 885    intel->locked = 0;
 886
 887    if (!sPriv->dri2.enabled)
 888       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 889
 890    _glthread_UNLOCK_MUTEX(lockMutex);
 891
 892    if (INTEL_DEBUG & DEBUG_LOCK)
 893       _mesa_printf("%s - unlocked\n", __progname);
 894
 895    /**
 896     * Nothing should be left in batch outside of LOCK/UNLOCK which references
 897     * cliprects.
 898     */
 899    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
 900       intel_batchbuffer_flush(intel->batch);
 901 }
 902