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/arrayobj.h"
  32 #include "main/extensions.h"
  33 #include "main/framebuffer.h"
  34 #include "main/imports.h"
  35 #include "main/points.h"
  36
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "drivers/common/driverfuncs.h"
  41
  42 #include "i830_dri.h"
  43
  44 #include "intel_chipset.h"
  45 #include "intel_buffers.h"
  46 #include "intel_tex.h"
  47 #include "intel_batchbuffer.h"
  48 #include "intel_clear.h"
  49 #include "intel_extensions.h"
  50 #include "intel_pixel.h"
  51 #include "intel_regions.h"
  52 #include "intel_buffer_objects.h"
  53 #include "intel_fbo.h"
  54 #include "intel_decode.h"
  55 #include "intel_bufmgr.h"
  56 #include "intel_screen.h"
  57 #include "intel_swapbuffers.h"
  58
  59 #include "drirenderbuffer.h"
  60 #include "vblank.h"
  61 #include "utils.h"
  62 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  63
  64
  65 #ifndef INTEL_DEBUG
  66 int INTEL_DEBUG = (0);
  67 #endif
  68
  69
  70 #define DRIVER_DATE                     "20090114"
  71 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  72
  73
  74 static const GLubyte *
  75 intelGetString(GLcontext * ctx, GLenum name)
  76 {
  77    const struct intel_context *const intel = intel_context(ctx);
  78    const char *chipset;
  79    static char buffer[128];
  80
  81    switch (name) {
  82    case GL_VENDOR:
  83       return (GLubyte *) "Tungsten Graphics, Inc";
  84       break;
  85
  86    case GL_RENDERER:
  87       switch (intel->intelScreen->deviceID) {
  88       case PCI_CHIP_845_G:
  89          chipset = "Intel(R) 845G";
  90          break;
  91       case PCI_CHIP_I830_M:
  92          chipset = "Intel(R) 830M";
  93          break;
  94       case PCI_CHIP_I855_GM:
  95          chipset = "Intel(R) 852GM/855GM";
  96          break;
  97       case PCI_CHIP_I865_G:
  98          chipset = "Intel(R) 865G";
  99          break;
 100       case PCI_CHIP_I915_G:
 101          chipset = "Intel(R) 915G";
 102          break;
 103       case PCI_CHIP_E7221_G:
 104          chipset = "Intel (R) E7221G (i915)";
 105          break;
 106       case PCI_CHIP_I915_GM:
 107          chipset = "Intel(R) 915GM";
 108          break;
 109       case PCI_CHIP_I945_G:
 110          chipset = "Intel(R) 945G";
 111          break;
 112       case PCI_CHIP_I945_GM:
 113          chipset = "Intel(R) 945GM";
 114          break;
 115       case PCI_CHIP_I945_GME:
 116          chipset = "Intel(R) 945GME";
 117          break;
 118       case PCI_CHIP_G33_G:
 119          chipset = "Intel(R) G33";
 120          break;
 121       case PCI_CHIP_Q35_G:
 122          chipset = "Intel(R) Q35";
 123          break;
 124       case PCI_CHIP_Q33_G:
 125          chipset = "Intel(R) Q33";
 126          break;
 127       case PCI_CHIP_IGD_GM:
 128       case PCI_CHIP_IGD_G:
 129          chipset = "Intel(R) IGD";
 130          break;
 131       case PCI_CHIP_I965_Q:
 132          chipset = "Intel(R) 965Q";
 133          break;
 134       case PCI_CHIP_I965_G:
 135       case PCI_CHIP_I965_G_1:
 136          chipset = "Intel(R) 965G";
 137          break;
 138       case PCI_CHIP_I946_GZ:
 139          chipset = "Intel(R) 946GZ";
 140          break;
 141       case PCI_CHIP_I965_GM:
 142          chipset = "Intel(R) 965GM";
 143          break;
 144       case PCI_CHIP_I965_GME:
 145          chipset = "Intel(R) 965GME/GLE";
 146          break;
 147       case PCI_CHIP_GM45_GM:
 148          chipset = "Mobile Intel® GM45 Express Chipset";
 149          break;
 150       case PCI_CHIP_IGD_E_G:
 151          chipset = "Intel(R) Integrated Graphics Device";
 152          break;
 153       case PCI_CHIP_G45_G:
 154          chipset = "Intel(R) G45/G43";
 155          break;
 156       case PCI_CHIP_Q45_G:
 157          chipset = "Intel(R) Q45/Q43";
 158          break;
 159       case PCI_CHIP_G41_G:
 160          chipset = "Intel(R) G41";
 161          break;
 162       default:
 163          chipset = "Unknown Intel Chipset";
 164          break;
 165       }
 166
 167       (void) driGetRendererString(buffer, chipset,
 168                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 169                                   0);
 170       return (GLubyte *) buffer;
 171
 172    default:
 173       return NULL;
 174    }
 175 }
 176
 177 static unsigned
 178 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 179 {
 180    switch (rb->Base._ActualFormat) {
 181    case GL_RGB5:
 182    case GL_DEPTH_COMPONENT16:
 183       return 16;
 184    case GL_RGB8:
 185    case GL_RGBA8:
 186    case GL_DEPTH_COMPONENT24:
 187    case GL_DEPTH24_STENCIL8_EXT:
 188    case GL_STENCIL_INDEX8_EXT:
 189       return 32;
 190    default:
 191       return 0;
 192    }
 193 }
 194
 195 void
 196 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 197 {
 198    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 199    struct intel_renderbuffer *rb;
 200    struct intel_region *region, *depth_region;
 201    struct intel_context *intel = context->driverPrivate;
 202    __DRIbuffer *buffers = NULL;
 203    __DRIscreen *screen;
 204    int i, count;
 205    unsigned int attachments[10];
 206    uint32_t name;
 207    const char *region_name;
 208
 209    if (INTEL_DEBUG & DEBUG_DRI)
 210       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 211
 212    screen = intel->intelScreen->driScrnPriv;
 213
 214    if (screen->dri2.loader
 215        && (screen->dri2.loader->base.version > 2)
 216        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 217       struct intel_renderbuffer *depth_rb;
 218       struct intel_renderbuffer *stencil_rb;
 219
 220       i = 0;
 221       if ((intel->is_front_buffer_rendering || !intel_fb->color_rb[1])
 222            && intel_fb->color_rb[0]) {
 223          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 224          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 225       }
 226
 227       if (intel_fb->color_rb[1]) {
 228          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 229          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 230       }
 231
 232       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 233       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 234
 235       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 236          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 237          attachments[i++] = intel_bits_per_pixel(depth_rb);
 238       } else if (depth_rb != NULL) {
 239          attachments[i++] = __DRI_BUFFER_DEPTH;
 240          attachments[i++] = intel_bits_per_pixel(depth_rb);
 241       } else if (stencil_rb != NULL) {
 242          attachments[i++] = __DRI_BUFFER_STENCIL;
 243          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 244       }
 245
 246       buffers =
 247          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 248                                                       &drawable->w,
 249                                                       &drawable->h,
 250                                                       attachments, i / 2,
 251                                                       &count,
 252                                                       drawable->loaderPrivate);
 253    } else if (screen->dri2.loader) {
 254       i = 0;
 255       if (intel_fb->color_rb[0])
 256          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 257       if (intel_fb->color_rb[1])
 258          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 259       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 260          attachments[i++] = __DRI_BUFFER_DEPTH;
 261       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 262          attachments[i++] = __DRI_BUFFER_STENCIL;
 263
 264       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 265                                                    &drawable->w,
 266                                                    &drawable->h,
 267                                                    attachments, i,
 268                                                    &count,
 269                                                    drawable->loaderPrivate);
 270    }
 271
 272    if (buffers == NULL)
 273       return;
 274
 275    drawable->x = 0;
 276    drawable->y = 0;
 277    drawable->backX = 0;
 278    drawable->backY = 0;
 279    drawable->numClipRects = 1;
 280    drawable->pClipRects[0].x1 = 0;
 281    drawable->pClipRects[0].y1 = 0;
 282    drawable->pClipRects[0].x2 = drawable->w;
 283    drawable->pClipRects[0].y2 = drawable->h;
 284    drawable->numBackClipRects = 1;
 285    drawable->pBackClipRects[0].x1 = 0;
 286    drawable->pBackClipRects[0].y1 = 0;
 287    drawable->pBackClipRects[0].x2 = drawable->w;
 288    drawable->pBackClipRects[0].y2 = drawable->h;
 289
 290    depth_region = NULL;
 291    for (i = 0; i < count; i++) {
 292        switch (buffers[i].attachment) {
 293        case __DRI_BUFFER_FRONT_LEFT:
 294            rb = intel_fb->color_rb[0];
 295            region_name = "dri2 front buffer";
 296            break;
 297
 298        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 299            rb = intel_fb->color_rb[0];
 300            region_name = "dri2 fake front buffer";
 301            break;
 302
 303        case __DRI_BUFFER_BACK_LEFT:
 304            rb = intel_fb->color_rb[1];
 305            region_name = "dri2 back buffer";
 306            break;
 307
 308        case __DRI_BUFFER_DEPTH:
 309            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 310            region_name = "dri2 depth buffer";
 311            break;
 312
 313        case __DRI_BUFFER_DEPTH_STENCIL:
 314            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 315            region_name = "dri2 depth / stencil buffer";
 316            break;
 317
 318        case __DRI_BUFFER_STENCIL:
 319            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 320            region_name = "dri2 stencil buffer";
 321            break;
 322
 323        case __DRI_BUFFER_ACCUM:
 324        default:
 325            fprintf(stderr,
 326                    "unhandled buffer attach event, attacment type %d\n",
 327                    buffers[i].attachment);
 328            return;
 329        }
 330
 331        if (rb == NULL)
 332           continue;
 333
 334        if (rb->region) {
 335           dri_bo_flink(rb->region->buffer, &name);
 336           if (name == buffers[i].name)
 337              continue;
 338        }
 339
 340        if (INTEL_DEBUG & DEBUG_DRI)
 341           fprintf(stderr,
 342                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 343                   buffers[i].name, buffers[i].attachment,
 344                   buffers[i].cpp, buffers[i].pitch);
 345
 346        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 347           if (INTEL_DEBUG & DEBUG_DRI)
 348              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 349           intel_region_reference(&region, depth_region);
 350        }
 351        else
 352           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 353                                                  drawable->w,
 354                                                  drawable->h,
 355                                                  buffers[i].pitch / buffers[i].cpp,
 356                                                  buffers[i].name,
 357                                                  region_name);
 358
 359        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 360           depth_region = region;
 361
 362        intel_renderbuffer_set_region(rb, region);
 363        intel_region_release(&region);
 364
 365        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 366           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 367           if (rb != NULL) {
 368              struct intel_region *stencil_region = NULL;
 369
 370              if (rb->region) {
 371                 dri_bo_flink(rb->region->buffer, &name);
 372                 if (name == buffers[i].name)
 373                    continue;
 374              }
 375
 376              intel_region_reference(&stencil_region, region);
 377              intel_renderbuffer_set_region(rb, stencil_region);
 378              intel_region_release(&stencil_region);
 379           }
 380        }
 381    }
 382
 383    driUpdateFramebufferSize(&intel->ctx, drawable);
 384 }
 385
 386 void
 387 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 388 {
 389     struct intel_context *intel = intel_context(ctx);
 390     __DRIcontext *driContext = intel->driContext;
 391     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 392                          GLsizei w, GLsizei h);
 393
 394     if (!driContext->driScreenPriv->dri2.enabled)
 395         return;
 396
 397     if (!intel->internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 398        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 399        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 400           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 401     }
 402
 403     old_viewport = ctx->Driver.Viewport;
 404     ctx->Driver.Viewport = NULL;
 405     intel->driDrawable = driContext->driDrawablePriv;
 406     intelWindowMoved(intel);
 407     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 408     ctx->Driver.Viewport = old_viewport;
 409 }
 410
 411
 412 static const struct dri_debug_control debug_control[] = {
 413    { "tex",   DEBUG_TEXTURE},
 414    { "state", DEBUG_STATE},
 415    { "ioctl", DEBUG_IOCTL},
 416    { "blit",  DEBUG_BLIT},
 417    { "mip",   DEBUG_MIPTREE},
 418    { "fall",  DEBUG_FALLBACKS},
 419    { "verb",  DEBUG_VERBOSE},
 420    { "bat",   DEBUG_BATCH},
 421    { "pix",   DEBUG_PIXEL},
 422    { "buf",   DEBUG_BUFMGR},
 423    { "reg",   DEBUG_REGION},
 424    { "fbo",   DEBUG_FBO},
 425    { "lock",  DEBUG_LOCK},
 426    { "sync",  DEBUG_SYNC},
 427    { "prim",  DEBUG_PRIMS },
 428    { "vert",  DEBUG_VERTS },
 429    { "dri",   DEBUG_DRI },
 430    { "dma",   DEBUG_DMA },
 431    { "san",   DEBUG_SANITY },
 432    { "sleep", DEBUG_SLEEP },
 433    { "stats", DEBUG_STATS },
 434    { "tile",  DEBUG_TILE },
 435    { "sing",  DEBUG_SINGLE_THREAD },
 436    { "thre",  DEBUG_SINGLE_THREAD },
 437    { "wm",    DEBUG_WM },
 438    { "urb",   DEBUG_URB },
 439    { "vs",    DEBUG_VS },
 440    { NULL,    0 }
 441 };
 442
 443
 444 static void
 445 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 446 {
 447     struct intel_context *intel = intel_context(ctx);
 448
 449    _swrast_InvalidateState(ctx, new_state);
 450    _swsetup_InvalidateState(ctx, new_state);
 451    _vbo_InvalidateState(ctx, new_state);
 452    _tnl_InvalidateState(ctx, new_state);
 453    _tnl_invalidate_vertex_state(ctx, new_state);
 454
 455    intel->NewGLState |= new_state;
 456
 457    if (intel->vtbl.invalidate_state)
 458       intel->vtbl.invalidate_state( intel, new_state );
 459 }
 460
 461 static void
 462 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 463 {
 464    struct intel_context *intel = intel_context(ctx);
 465
 466    if (intel->Fallback)
 467       _swrast_flush(ctx);
 468
 469    if (!IS_965(intel->intelScreen->deviceID))
 470       INTEL_FIREVERTICES(intel);
 471
 472    /* Emit a flush so that any frontbuffer rendering that might have occurred
 473     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 474     * a flush for us.
 475     */
 476    if (needs_mi_flush)
 477       intel_batchbuffer_emit_mi_flush(intel->batch);
 478
 479    if (intel->batch->map != intel->batch->ptr)
 480       intel_batchbuffer_flush(intel->batch);
 481
 482    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 483       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 484
 485       if (screen->dri2.loader &&
 486           (screen->dri2.loader->base.version >= 2)
 487           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 488          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 489                                                   intel->driDrawable->loaderPrivate);
 490
 491          /* Only clear the dirty bit if front-buffer rendering is no longer
 492           * enabled.  This is done so that the dirty bit can only be set in
 493           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 494           * each of N places that do rendering.  This has worse performances,
 495           * but it is much easier to get correct.
 496           */
 497          if (intel->is_front_buffer_rendering) {
 498             intel->front_buffer_dirty = GL_FALSE;
 499          }
 500       }
 501    }
 502 }
 503
 504 void
 505 intelFlush(GLcontext * ctx)
 506 {
 507    intel_flush(ctx, GL_FALSE);
 508 }
 509
 510 static void
 511 intel_glFlush(GLcontext *ctx)
 512 {
 513    intel_flush(ctx, GL_TRUE);
 514 }
 515
 516 void
 517 intelFinish(GLcontext * ctx)
 518 {
 519    struct gl_framebuffer *fb = ctx->DrawBuffer;
 520    int i;
 521
 522    intelFlush(ctx);
 523
 524    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 525        struct intel_renderbuffer *irb;
 526
 527        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 528
 529        if (irb->region)
 530           dri_bo_wait_rendering(irb->region->buffer);
 531    }
 532    if (fb->_DepthBuffer) {
 533       /* XXX: Wait on buffer idle */
 534    }
 535 }
 536
 537 void
 538 intelInitDriverFunctions(struct dd_function_table *functions)
 539 {
 540    _mesa_init_driver_functions(functions);
 541
 542    functions->Flush = intel_glFlush;
 543    functions->Finish = intelFinish;
 544    functions->GetString = intelGetString;
 545    functions->UpdateState = intelInvalidateState;
 546
 547    functions->CopyColorTable = _swrast_CopyColorTable;
 548    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 549    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 550    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 551
 552    intelInitTextureFuncs(functions);
 553    intelInitTextureImageFuncs(functions);
 554    intelInitTextureSubImageFuncs(functions);
 555    intelInitTextureCopyImageFuncs(functions);
 556    intelInitStateFuncs(functions);
 557    intelInitClearFuncs(functions);
 558    intelInitBufferFuncs(functions);
 559    intelInitPixelFuncs(functions);
 560 }
 561
 562
 563 GLboolean
 564 intelInitContext(struct intel_context *intel,
 565                  const __GLcontextModes * mesaVis,
 566                  __DRIcontextPrivate * driContextPriv,
 567                  void *sharedContextPrivate,
 568                  struct dd_function_table *functions)
 569 {
 570    GLcontext *ctx = &intel->ctx;
 571    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 572    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 573    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 574    int fthrottle_mode;
 575
 576    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 577                                  functions, (void *) intel)) {
 578       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 579       return GL_FALSE;
 580    }
 581
 582    driContextPriv->driverPrivate = intel;
 583    intel->intelScreen = intelScreen;
 584    intel->driScreen = sPriv;
 585    intel->sarea = intelScreen->sarea;
 586    intel->driContext = driContextPriv;
 587
 588    /* Dri stuff */
 589    intel->hHWContext = driContextPriv->hHWContext;
 590    intel->driFd = sPriv->fd;
 591    intel->driHwLock = sPriv->lock;
 592
 593    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 594                        intel->driScreen->myNum,
 595                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 596    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 597       intel->maxBatchSize = 4096;
 598    else
 599       intel->maxBatchSize = BATCH_SZ;
 600
 601    intel->bufmgr = intelScreen->bufmgr;
 602    intel->ttm = intelScreen->ttm;
 603    if (intel->ttm) {
 604       int bo_reuse_mode;
 605
 606       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 607       switch (bo_reuse_mode) {
 608       case DRI_CONF_BO_REUSE_DISABLED:
 609          break;
 610       case DRI_CONF_BO_REUSE_ALL:
 611          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 612          break;
 613       }
 614    }
 615
 616    /* This doesn't yet catch all non-conformant rendering, but it's a
 617     * start.
 618     */
 619    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 620       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 621       if (value > 0) {
 622          intel->conformance_mode = value;
 623       }
 624       else {
 625          intel->conformance_mode = 1;
 626       }
 627    }
 628
 629    if (intel->conformance_mode > 0) {
 630       ctx->Const.MinLineWidth = 1.0;
 631       ctx->Const.MinLineWidthAA = 1.0;
 632       ctx->Const.MaxLineWidth = 1.0;
 633       ctx->Const.MaxLineWidthAA = 1.0;
 634       ctx->Const.LineWidthGranularity = 1.0;
 635    }
 636    else {
 637       ctx->Const.MinLineWidth = 1.0;
 638       ctx->Const.MinLineWidthAA = 1.0;
 639       ctx->Const.MaxLineWidth = 5.0;
 640       ctx->Const.MaxLineWidthAA = 5.0;
 641       ctx->Const.LineWidthGranularity = 0.5;
 642    }
 643
 644    ctx->Const.MinPointSize = 1.0;
 645    ctx->Const.MinPointSizeAA = 1.0;
 646    ctx->Const.MaxPointSize = 255.0;
 647    ctx->Const.MaxPointSizeAA = 3.0;
 648    ctx->Const.PointSizeGranularity = 1.0;
 649
 650    /* reinitialize the context point state.
 651     * It depend on constants in __GLcontextRec::Const
 652     */
 653    _mesa_init_point(ctx);
 654
 655    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 656    if (IS_965(intelScreen->deviceID)) {
 657       if (MAX_WIDTH > 8192)
 658          ctx->Const.MaxRenderbufferSize = 8192;
 659    } else {
 660       if (MAX_WIDTH > 2048)
 661          ctx->Const.MaxRenderbufferSize = 2048;
 662    }
 663
 664    /* Initialize the software rasterizer and helper modules. */
 665    _swrast_CreateContext(ctx);
 666    _vbo_CreateContext(ctx);
 667    _tnl_CreateContext(ctx);
 668    _swsetup_CreateContext(ctx);
 669
 670    /* Configure swrast to match hardware characteristics: */
 671    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 672    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 673
 674    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 675    intel->hw_stipple = 1;
 676
 677    /* XXX FBO: this doesn't seem to be used anywhere */
 678    switch (mesaVis->depthBits) {
 679    case 0:                     /* what to do in this case? */
 680    case 16:
 681       intel->polygon_offset_scale = 1.0;
 682       break;
 683    case 24:
 684       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 685       break;
 686    default:
 687       assert(0);
 688       break;
 689    }
 690
 691    if (IS_965(intelScreen->deviceID))
 692       intel->polygon_offset_scale /= 0xffff;
 693
 694    intel->RenderIndex = ~0;
 695
 696    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 697    intel->irqsEmitted = 0;
 698
 699    intel->do_irqs = (intel->intelScreen->irq_active &&
 700                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 701
 702    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 703
 704    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 705       _mesa_printf("IRQs not active.  Exiting\n");
 706       exit(1);
 707    }
 708
 709    intelInitExtensions(ctx, GL_FALSE);
 710
 711    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 712    if (INTEL_DEBUG & DEBUG_BUFMGR)
 713       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 714
 715    if (!sPriv->dri2.enabled)
 716       intel_recreate_static_regions(intel);
 717
 718    intel->batch = intel_batchbuffer_alloc(intel);
 719
 720    intel_bufferobj_init(intel);
 721    intel_fbo_init(intel);
 722
 723    if (intel->ctx.Mesa_DXTn) {
 724       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 725       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 726    }
 727    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 728       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 729    }
 730    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 731                                                "texture_tiling");
 732    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 733
 734    intel->prim.primitive = ~0;
 735
 736    /* Force all software fallbacks */
 737    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 738       fprintf(stderr, "disabling 3D rasterization\n");
 739       intel->no_rast = 1;
 740    }
 741
 742    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 743       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 744       intel->always_flush_batch = 1;
 745    }
 746
 747    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 748       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 749       intel->always_flush_cache = 1;
 750    }
 751
 752    /* Disable all hardware rendering (skip emitting batches and fences/waits
 753     * to the kernel)
 754     */
 755    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 756
 757    return GL_TRUE;
 758 }
 759
 760 void
 761 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 762 {
 763    struct intel_context *intel =
 764       (struct intel_context *) driContextPriv->driverPrivate;
 765
 766    assert(intel);               /* should never be null */
 767    if (intel) {
 768       GLboolean release_texture_heaps;
 769
 770       INTEL_FIREVERTICES(intel);
 771
 772       if (intel->clear.arrayObj)
 773          _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
 774
 775       intel->vtbl.destroy(intel);
 776
 777       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 778       _swsetup_DestroyContext(&intel->ctx);
 779       _tnl_DestroyContext(&intel->ctx);
 780       _vbo_DestroyContext(&intel->ctx);
 781
 782       _swrast_DestroyContext(&intel->ctx);
 783       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 784
 785       intel_batchbuffer_free(intel->batch);
 786       intel->batch = NULL;
 787
 788       free(intel->prim.vb);
 789       intel->prim.vb = NULL;
 790       dri_bo_unreference(intel->prim.vb_bo);
 791       intel->prim.vb_bo = NULL;
 792
 793       if (release_texture_heaps) {
 794          /* Nothing is currently done here to free texture heaps;
 795           * but we're not using the texture heap utilities, so I
 796           * rather think we shouldn't.  I've taken a look, and can't
 797           * find any private texture data hanging around anywhere, but
 798           * I'm not yet certain there isn't any at all...
 799           */
 800          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 801             fprintf(stderr, "do something to free texture heaps\n");
 802           */
 803       }
 804
 805       /* XXX In intelMakeCurrent() below, the context's static regions are
 806        * referenced inside the frame buffer; it's listed as a hack,
 807        * with a comment of "XXX FBO temporary fix-ups!", but
 808        * as long as it's there, we should release the regions here.
 809        * The do/while loop around the block is used to allow the
 810        * "continue" statements inside the block to exit the block,
 811        * to avoid many layers of "if" constructs.
 812        */
 813       do {
 814          __DRIdrawablePrivate * driDrawPriv = intel->driDrawable;
 815          struct intel_framebuffer *intel_fb;
 816          struct intel_renderbuffer *irbDepth, *irbStencil;
 817          if (!driDrawPriv) {
 818             /* We're already detached from the drawable; exit this block. */
 819             continue;
 820          }
 821          intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 822          if (!intel_fb) {
 823             /* The frame buffer is already gone; exit this block. */
 824             continue;
 825          }
 826          irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 827          irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 828
 829          /* If the regions of the frame buffer still match the regions
 830           * of the context, release them.  If they've changed somehow,
 831           * leave them alone.
 832           */
 833          if (intel_fb->color_rb[0] && intel_fb->color_rb[0]->region == intel->front_region) {
 834             intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 835          }
 836          if (intel_fb->color_rb[1] && intel_fb->color_rb[1]->region == intel->back_region) {
 837             intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 838          }
 839
 840          if (irbDepth && irbDepth->region == intel->depth_region) {
 841             intel_renderbuffer_set_region(irbDepth, NULL);
 842          }
 843          /* Usually, the stencil buffer is the same as the depth buffer;
 844           * but they're handled separately in MakeCurrent, so we'll
 845           * handle them separately here.
 846           */
 847          if (irbStencil && irbStencil->region == intel->depth_region) {
 848             intel_renderbuffer_set_region(irbStencil, NULL);
 849          }
 850       } while (0);
 851
 852       intel_region_release(&intel->front_region);
 853       intel_region_release(&intel->back_region);
 854       intel_region_release(&intel->depth_region);
 855
 856       driDestroyOptionCache(&intel->optionCache);
 857
 858       /* free the Mesa context */
 859       _mesa_free_context_data(&intel->ctx);
 860
 861
 862    }
 863 }
 864
 865 GLboolean
 866 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 867 {
 868    return GL_TRUE;
 869 }
 870
 871 GLboolean
 872 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 873                  __DRIdrawablePrivate * driDrawPriv,
 874                  __DRIdrawablePrivate * driReadPriv)
 875 {
 876    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 877
 878    if (driContextPriv) {
 879       struct intel_context *intel =
 880          (struct intel_context *) driContextPriv->driverPrivate;
 881       struct intel_framebuffer *intel_fb =
 882          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 883       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 884
 885       if (driContextPriv->driScreenPriv->dri2.enabled) {
 886           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 887           if (driDrawPriv != driReadPriv)
 888               intel_update_renderbuffers(driContextPriv, driReadPriv);
 889       } else {
 890           /* XXX FBO temporary fix-ups!  These are released in
 891            * intelDextroyContext(), above.  Changes here should be
 892            * reflected there.
 893            */
 894           /* if the renderbuffers don't have regions, init them from the context */
 895          struct intel_renderbuffer *irbDepth
 896             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 897          struct intel_renderbuffer *irbStencil
 898             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 899
 900          if (intel_fb->color_rb[0]) {
 901             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 902                                           intel->front_region);
 903          }
 904          if (intel_fb->color_rb[1]) {
 905             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 906                                           intel->back_region);
 907          }
 908
 909          if (irbDepth) {
 910             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 911          }
 912          if (irbStencil) {
 913             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 914          }
 915       }
 916
 917       /* set GLframebuffer size to match window, if needed */
 918       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 919
 920       if (driReadPriv != driDrawPriv) {
 921          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 922       }
 923
 924       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 925
 926       /* The drawbuffer won't always be updated by _mesa_make_current:
 927        */
 928       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 929
 930          if (intel->driReadDrawable != driReadPriv)
 931             intel->driReadDrawable = driReadPriv;
 932
 933          if (intel->driDrawable != driDrawPriv) {
 934             if (driDrawPriv->swap_interval == (unsigned)-1) {
 935                int i;
 936
 937                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 938                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 939                  : VBLANK_FLAG_NO_IRQ;
 940
 941                /* Prevent error printf if one crtc is disabled, this will
 942                 * be properly calculated in intelWindowMoved() next.
 943                 */
 944                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 945
 946                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 947                driDrawableInitVBlank(driDrawPriv);
 948                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 949
 950                for (i = 0; i < 2; i++) {
 951                   if (intel_fb->color_rb[i])
 952                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 953                }
 954             }
 955             intel->driDrawable = driDrawPriv;
 956             intelWindowMoved(intel);
 957          }
 958
 959          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 960       }
 961    }
 962    else {
 963       _mesa_make_current(NULL, NULL, NULL);
 964    }
 965
 966    return GL_TRUE;
 967 }
 968
 969 static void
 970 intelContendedLock(struct intel_context *intel, GLuint flags)
 971 {
 972    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 973    __DRIscreenPrivate *sPriv = intel->driScreen;
 974    volatile drm_i915_sarea_t *sarea = intel->sarea;
 975    int me = intel->hHWContext;
 976
 977    drmGetLock(intel->driFd, intel->hHWContext, flags);
 978    intel->locked = 1;
 979
 980    if (INTEL_DEBUG & DEBUG_LOCK)
 981       _mesa_printf("%s - got contended lock\n", __progname);
 982
 983    /* If the window moved, may need to set a new cliprect now.
 984     *
 985     * NOTE: This releases and regains the hw lock, so all state
 986     * checking must be done *after* this call:
 987     */
 988    if (dPriv)
 989        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 990
 991    if (sarea && sarea->ctxOwner != me) {
 992       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 993          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 994                  sarea->ctxOwner, me);
 995       }
 996       sarea->ctxOwner = me;
 997    }
 998
 999    /* If the last consumer of the texture memory wasn't us, notify the fake
1000     * bufmgr and record the new owner.  We should have the memory shared
1001     * between contexts of a single fake bufmgr, but this will at least make
1002     * things correct for now.
1003     */
1004    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1005       sarea->texAge = intel->hHWContext;
1006       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1007       if (INTEL_DEBUG & DEBUG_BATCH)
1008          intel_decode_context_reset();
1009       if (INTEL_DEBUG & DEBUG_BUFMGR)
1010          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1011                  sarea->ctxOwner, intel->hHWContext);
1012    }
1013
1014    /* Drawable changed?
1015     */
1016    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1017        intelWindowMoved(intel);
1018        intel->lastStamp = dPriv->lastStamp;
1019    }
1020 }
1021
1022
1023 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1024
1025 /* Lock the hardware and validate our state.
1026  */
1027 void LOCK_HARDWARE( struct intel_context *intel )
1028 {
1029     __DRIdrawable *dPriv = intel->driDrawable;
1030     __DRIscreen *sPriv = intel->driScreen;
1031     char __ret = 0;
1032     struct intel_framebuffer *intel_fb = NULL;
1033     struct intel_renderbuffer *intel_rb = NULL;
1034
1035     _glthread_LOCK_MUTEX(lockMutex);
1036     assert(!intel->locked);
1037     intel->locked = 1;
1038
1039     if (intel->driDrawable) {
1040        intel_fb = intel->driDrawable->driverPrivate;
1041
1042        if (intel_fb)
1043           intel_rb =
1044              intel_get_renderbuffer(&intel_fb->Base,
1045                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1046     }
1047
1048     if (intel_rb && dPriv->vblFlags &&
1049         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1050         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1051         drmVBlank vbl;
1052
1053         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1054
1055         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1056             vbl.request.type |= DRM_VBLANK_SECONDARY;
1057         }
1058
1059         vbl.request.sequence = intel_rb->vbl_pending;
1060         drmWaitVBlank(intel->driFd, &vbl);
1061         intel_fb->vbl_waited = vbl.reply.sequence;
1062     }
1063
1064     if (!sPriv->dri2.enabled) {
1065         DRM_CAS(intel->driHwLock, intel->hHWContext,
1066                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1067
1068         if (__ret)
1069             intelContendedLock( intel, 0 );
1070     }
1071
1072
1073     if (INTEL_DEBUG & DEBUG_LOCK)
1074       _mesa_printf("%s - locked\n", __progname);
1075 }
1076
1077
1078 /* Unlock the hardware using the global current context
1079  */
1080 void UNLOCK_HARDWARE( struct intel_context *intel )
1081 {
1082     __DRIscreen *sPriv = intel->driScreen;
1083
1084    intel->vtbl.note_unlock( intel );
1085    intel->locked = 0;
1086
1087    if (!sPriv->dri2.enabled)
1088       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1089
1090    _glthread_UNLOCK_MUTEX(lockMutex);
1091
1092    if (INTEL_DEBUG & DEBUG_LOCK)
1093       _mesa_printf("%s - unlocked\n", __progname);
1094
1095    /**
1096     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1097     * cliprects.
1098     */
1099    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1100       intel_batchbuffer_flush(intel->batch);
1101 }
1102