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 void intel_flush(GLcontext *ctx, GLboolean needs_mi_flush);
  75
  76 static const GLubyte *
  77 intelGetString(GLcontext * ctx, GLenum name)
  78 {
  79    const struct intel_context *const intel = intel_context(ctx);
  80    const char *chipset;
  81    static char buffer[128];
  82
  83    switch (name) {
  84    case GL_VENDOR:
  85       return (GLubyte *) "Tungsten Graphics, Inc";
  86       break;
  87
  88    case GL_RENDERER:
  89       switch (intel->intelScreen->deviceID) {
  90       case PCI_CHIP_845_G:
  91          chipset = "Intel(R) 845G";
  92          break;
  93       case PCI_CHIP_I830_M:
  94          chipset = "Intel(R) 830M";
  95          break;
  96       case PCI_CHIP_I855_GM:
  97          chipset = "Intel(R) 852GM/855GM";
  98          break;
  99       case PCI_CHIP_I865_G:
 100          chipset = "Intel(R) 865G";
 101          break;
 102       case PCI_CHIP_I915_G:
 103          chipset = "Intel(R) 915G";
 104          break;
 105       case PCI_CHIP_E7221_G:
 106          chipset = "Intel (R) E7221G (i915)";
 107          break;
 108       case PCI_CHIP_I915_GM:
 109          chipset = "Intel(R) 915GM";
 110          break;
 111       case PCI_CHIP_I945_G:
 112          chipset = "Intel(R) 945G";
 113          break;
 114       case PCI_CHIP_I945_GM:
 115          chipset = "Intel(R) 945GM";
 116          break;
 117       case PCI_CHIP_I945_GME:
 118          chipset = "Intel(R) 945GME";
 119          break;
 120       case PCI_CHIP_G33_G:
 121          chipset = "Intel(R) G33";
 122          break;
 123       case PCI_CHIP_Q35_G:
 124          chipset = "Intel(R) Q35";
 125          break;
 126       case PCI_CHIP_Q33_G:
 127          chipset = "Intel(R) Q33";
 128          break;
 129       case PCI_CHIP_IGD_GM:
 130       case PCI_CHIP_IGD_G:
 131          chipset = "Intel(R) IGD";
 132          break;
 133       case PCI_CHIP_I965_Q:
 134          chipset = "Intel(R) 965Q";
 135          break;
 136       case PCI_CHIP_I965_G:
 137       case PCI_CHIP_I965_G_1:
 138          chipset = "Intel(R) 965G";
 139          break;
 140       case PCI_CHIP_I946_GZ:
 141          chipset = "Intel(R) 946GZ";
 142          break;
 143       case PCI_CHIP_I965_GM:
 144          chipset = "Intel(R) 965GM";
 145          break;
 146       case PCI_CHIP_I965_GME:
 147          chipset = "Intel(R) 965GME/GLE";
 148          break;
 149       case PCI_CHIP_GM45_GM:
 150          chipset = "Mobile Intel® GM45 Express Chipset";
 151          break;
 152       case PCI_CHIP_IGD_E_G:
 153          chipset = "Intel(R) Integrated Graphics Device";
 154          break;
 155       case PCI_CHIP_G45_G:
 156          chipset = "Intel(R) G45/G43";
 157          break;
 158       case PCI_CHIP_Q45_G:
 159          chipset = "Intel(R) Q45/Q43";
 160          break;
 161       case PCI_CHIP_G41_G:
 162          chipset = "Intel(R) G41";
 163          break;
 164       default:
 165          chipset = "Unknown Intel Chipset";
 166          break;
 167       }
 168
 169       (void) driGetRendererString(buffer, chipset,
 170                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 171                                   0);
 172       return (GLubyte *) buffer;
 173
 174    default:
 175       return NULL;
 176    }
 177 }
 178
 179 static unsigned
 180 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 181 {
 182    switch (rb->Base._ActualFormat) {
 183    case GL_RGB5:
 184    case GL_DEPTH_COMPONENT16:
 185       return 16;
 186    case GL_RGB8:
 187    case GL_RGBA8:
 188    case GL_DEPTH_COMPONENT24:
 189    case GL_DEPTH24_STENCIL8_EXT:
 190    case GL_STENCIL_INDEX8_EXT:
 191       return 32;
 192    default:
 193       return 0;
 194    }
 195 }
 196
 197 void
 198 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 199 {
 200    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 201    struct intel_renderbuffer *rb;
 202    struct intel_region *region, *depth_region;
 203    struct intel_context *intel = context->driverPrivate;
 204    __DRIbuffer *buffers = NULL;
 205    __DRIscreen *screen;
 206    int i, count;
 207    unsigned int attachments[10];
 208    uint32_t name;
 209    const char *region_name;
 210
 211    if (INTEL_DEBUG & DEBUG_DRI)
 212       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 213
 214    screen = intel->intelScreen->driScrnPriv;
 215
 216    if (screen->dri2.loader
 217        && (screen->dri2.loader->base.version > 2)
 218        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 219       struct intel_renderbuffer *depth_rb;
 220       struct intel_renderbuffer *stencil_rb;
 221
 222       i = 0;
 223       if ((intel->is_front_buffer_rendering ||
 224            intel->is_front_buffer_reading ||
 225            !intel_fb->color_rb[1])
 226            && intel_fb->color_rb[0]) {
 227          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 228          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 229       }
 230
 231       if (intel_fb->color_rb[1]) {
 232          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 233          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 234       }
 235
 236       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 237       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 238
 239       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 240          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 241          attachments[i++] = intel_bits_per_pixel(depth_rb);
 242       } else if (depth_rb != NULL) {
 243          attachments[i++] = __DRI_BUFFER_DEPTH;
 244          attachments[i++] = intel_bits_per_pixel(depth_rb);
 245       } else if (stencil_rb != NULL) {
 246          attachments[i++] = __DRI_BUFFER_STENCIL;
 247          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 248       }
 249
 250       buffers =
 251          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 252                                                       &drawable->w,
 253                                                       &drawable->h,
 254                                                       attachments, i / 2,
 255                                                       &count,
 256                                                       drawable->loaderPrivate);
 257    } else if (screen->dri2.loader) {
 258       i = 0;
 259       if (intel_fb->color_rb[0])
 260          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 261       if (intel_fb->color_rb[1])
 262          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 263       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 264          attachments[i++] = __DRI_BUFFER_DEPTH;
 265       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 266          attachments[i++] = __DRI_BUFFER_STENCIL;
 267
 268       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 269                                                    &drawable->w,
 270                                                    &drawable->h,
 271                                                    attachments, i,
 272                                                    &count,
 273                                                    drawable->loaderPrivate);
 274    }
 275
 276    if (buffers == NULL)
 277       return;
 278
 279    drawable->x = 0;
 280    drawable->y = 0;
 281    drawable->backX = 0;
 282    drawable->backY = 0;
 283    drawable->numClipRects = 1;
 284    drawable->pClipRects[0].x1 = 0;
 285    drawable->pClipRects[0].y1 = 0;
 286    drawable->pClipRects[0].x2 = drawable->w;
 287    drawable->pClipRects[0].y2 = drawable->h;
 288    drawable->numBackClipRects = 1;
 289    drawable->pBackClipRects[0].x1 = 0;
 290    drawable->pBackClipRects[0].y1 = 0;
 291    drawable->pBackClipRects[0].x2 = drawable->w;
 292    drawable->pBackClipRects[0].y2 = drawable->h;
 293
 294    depth_region = NULL;
 295    for (i = 0; i < count; i++) {
 296        switch (buffers[i].attachment) {
 297        case __DRI_BUFFER_FRONT_LEFT:
 298            rb = intel_fb->color_rb[0];
 299            region_name = "dri2 front buffer";
 300            break;
 301
 302        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 303            rb = intel_fb->color_rb[0];
 304            region_name = "dri2 fake front buffer";
 305            break;
 306
 307        case __DRI_BUFFER_BACK_LEFT:
 308            rb = intel_fb->color_rb[1];
 309            region_name = "dri2 back buffer";
 310            break;
 311
 312        case __DRI_BUFFER_DEPTH:
 313            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 314            region_name = "dri2 depth buffer";
 315            break;
 316
 317        case __DRI_BUFFER_DEPTH_STENCIL:
 318            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 319            region_name = "dri2 depth / stencil buffer";
 320            break;
 321
 322        case __DRI_BUFFER_STENCIL:
 323            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 324            region_name = "dri2 stencil buffer";
 325            break;
 326
 327        case __DRI_BUFFER_ACCUM:
 328        default:
 329            fprintf(stderr,
 330                    "unhandled buffer attach event, attacment type %d\n",
 331                    buffers[i].attachment);
 332            return;
 333        }
 334
 335        if (rb == NULL)
 336           continue;
 337
 338        if (rb->region) {
 339           dri_bo_flink(rb->region->buffer, &name);
 340           if (name == buffers[i].name)
 341              continue;
 342        }
 343
 344        if (INTEL_DEBUG & DEBUG_DRI)
 345           fprintf(stderr,
 346                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 347                   buffers[i].name, buffers[i].attachment,
 348                   buffers[i].cpp, buffers[i].pitch);
 349
 350        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 351           if (INTEL_DEBUG & DEBUG_DRI)
 352              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 353           intel_region_reference(&region, depth_region);
 354        }
 355        else
 356           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 357                                                  drawable->w,
 358                                                  drawable->h,
 359                                                  buffers[i].pitch / buffers[i].cpp,
 360                                                  buffers[i].name,
 361                                                  region_name);
 362
 363        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 364           depth_region = region;
 365
 366        intel_renderbuffer_set_region(rb, region);
 367        intel_region_release(&region);
 368
 369        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 370           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 371           if (rb != NULL) {
 372              struct intel_region *stencil_region = NULL;
 373
 374              if (rb->region) {
 375                 dri_bo_flink(rb->region->buffer, &name);
 376                 if (name == buffers[i].name)
 377                    continue;
 378              }
 379
 380              intel_region_reference(&stencil_region, region);
 381              intel_renderbuffer_set_region(rb, stencil_region);
 382              intel_region_release(&stencil_region);
 383           }
 384        }
 385    }
 386
 387    driUpdateFramebufferSize(&intel->ctx, drawable);
 388 }
 389
 390 void
 391 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 392 {
 393     struct intel_context *intel = intel_context(ctx);
 394     __DRIcontext *driContext = intel->driContext;
 395     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 396                          GLsizei w, GLsizei h);
 397
 398     if (!driContext->driScreenPriv->dri2.enabled)
 399         return;
 400
 401     if (!intel->internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 402        /* If we're rendering to the fake front buffer, make sure all the pending
 403         * drawing has landed on the real front buffer.  Otherwise when we
 404         * eventually get to DRI2GetBuffersWithFormat the stale real front
 405         * buffer contents will get copied to the new fake front buffer.
 406         */
 407        if (intel->is_front_buffer_rendering) {
 408           intel_flush(ctx, GL_FALSE);
 409        }
 410
 411        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 412        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 413           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 414     }
 415
 416     old_viewport = ctx->Driver.Viewport;
 417     ctx->Driver.Viewport = NULL;
 418     intel->driDrawable = driContext->driDrawablePriv;
 419     intelWindowMoved(intel);
 420     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 421     ctx->Driver.Viewport = old_viewport;
 422 }
 423
 424
 425 static const struct dri_debug_control debug_control[] = {
 426    { "tex",   DEBUG_TEXTURE},
 427    { "state", DEBUG_STATE},
 428    { "ioctl", DEBUG_IOCTL},
 429    { "blit",  DEBUG_BLIT},
 430    { "mip",   DEBUG_MIPTREE},
 431    { "fall",  DEBUG_FALLBACKS},
 432    { "verb",  DEBUG_VERBOSE},
 433    { "bat",   DEBUG_BATCH},
 434    { "pix",   DEBUG_PIXEL},
 435    { "buf",   DEBUG_BUFMGR},
 436    { "reg",   DEBUG_REGION},
 437    { "fbo",   DEBUG_FBO},
 438    { "lock",  DEBUG_LOCK},
 439    { "sync",  DEBUG_SYNC},
 440    { "prim",  DEBUG_PRIMS },
 441    { "vert",  DEBUG_VERTS },
 442    { "dri",   DEBUG_DRI },
 443    { "dma",   DEBUG_DMA },
 444    { "san",   DEBUG_SANITY },
 445    { "sleep", DEBUG_SLEEP },
 446    { "stats", DEBUG_STATS },
 447    { "tile",  DEBUG_TILE },
 448    { "sing",  DEBUG_SINGLE_THREAD },
 449    { "thre",  DEBUG_SINGLE_THREAD },
 450    { "wm",    DEBUG_WM },
 451    { "urb",   DEBUG_URB },
 452    { "vs",    DEBUG_VS },
 453    { NULL,    0 }
 454 };
 455
 456
 457 static void
 458 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 459 {
 460     struct intel_context *intel = intel_context(ctx);
 461
 462    _swrast_InvalidateState(ctx, new_state);
 463    _swsetup_InvalidateState(ctx, new_state);
 464    _vbo_InvalidateState(ctx, new_state);
 465    _tnl_InvalidateState(ctx, new_state);
 466    _tnl_invalidate_vertex_state(ctx, new_state);
 467
 468    intel->NewGLState |= new_state;
 469
 470    if (intel->vtbl.invalidate_state)
 471       intel->vtbl.invalidate_state( intel, new_state );
 472 }
 473
 474 static void
 475 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 476 {
 477    struct intel_context *intel = intel_context(ctx);
 478
 479    if (intel->Fallback)
 480       _swrast_flush(ctx);
 481
 482    if (!IS_965(intel->intelScreen->deviceID))
 483       INTEL_FIREVERTICES(intel);
 484
 485    /* Emit a flush so that any frontbuffer rendering that might have occurred
 486     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 487     * a flush for us.
 488     */
 489    if (needs_mi_flush)
 490       intel_batchbuffer_emit_mi_flush(intel->batch);
 491
 492    if (intel->batch->map != intel->batch->ptr)
 493       intel_batchbuffer_flush(intel->batch);
 494
 495    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 496       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 497
 498       if (screen->dri2.loader &&
 499           (screen->dri2.loader->base.version >= 2)
 500           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 501          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 502                                                   intel->driDrawable->loaderPrivate);
 503
 504          /* Only clear the dirty bit if front-buffer rendering is no longer
 505           * enabled.  This is done so that the dirty bit can only be set in
 506           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 507           * each of N places that do rendering.  This has worse performances,
 508           * but it is much easier to get correct.
 509           */
 510          if (intel->is_front_buffer_rendering) {
 511             intel->front_buffer_dirty = GL_FALSE;
 512          }
 513       }
 514    }
 515 }
 516
 517 void
 518 intelFlush(GLcontext * ctx)
 519 {
 520    intel_flush(ctx, GL_FALSE);
 521 }
 522
 523 static void
 524 intel_glFlush(GLcontext *ctx)
 525 {
 526    intel_flush(ctx, GL_TRUE);
 527 }
 528
 529 void
 530 intelFinish(GLcontext * ctx)
 531 {
 532    struct gl_framebuffer *fb = ctx->DrawBuffer;
 533    int i;
 534
 535    intelFlush(ctx);
 536
 537    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 538        struct intel_renderbuffer *irb;
 539
 540        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 541
 542        if (irb->region)
 543           dri_bo_wait_rendering(irb->region->buffer);
 544    }
 545    if (fb->_DepthBuffer) {
 546       /* XXX: Wait on buffer idle */
 547    }
 548 }
 549
 550 void
 551 intelInitDriverFunctions(struct dd_function_table *functions)
 552 {
 553    _mesa_init_driver_functions(functions);
 554
 555    functions->Flush = intel_glFlush;
 556    functions->Finish = intelFinish;
 557    functions->GetString = intelGetString;
 558    functions->UpdateState = intelInvalidateState;
 559
 560    functions->CopyColorTable = _swrast_CopyColorTable;
 561    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 562    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 563    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 564
 565    intelInitTextureFuncs(functions);
 566    intelInitTextureImageFuncs(functions);
 567    intelInitTextureSubImageFuncs(functions);
 568    intelInitTextureCopyImageFuncs(functions);
 569    intelInitStateFuncs(functions);
 570    intelInitClearFuncs(functions);
 571    intelInitBufferFuncs(functions);
 572    intelInitPixelFuncs(functions);
 573    intelInitBufferObjectFuncs(functions);
 574 }
 575
 576
 577 GLboolean
 578 intelInitContext(struct intel_context *intel,
 579                  const __GLcontextModes * mesaVis,
 580                  __DRIcontextPrivate * driContextPriv,
 581                  void *sharedContextPrivate,
 582                  struct dd_function_table *functions)
 583 {
 584    GLcontext *ctx = &intel->ctx;
 585    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 586    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 587    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 588    int fthrottle_mode;
 589
 590    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 591                                  functions, (void *) intel)) {
 592       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 593       return GL_FALSE;
 594    }
 595
 596    driContextPriv->driverPrivate = intel;
 597    intel->intelScreen = intelScreen;
 598    intel->driScreen = sPriv;
 599    intel->sarea = intelScreen->sarea;
 600    intel->driContext = driContextPriv;
 601
 602    /* Dri stuff */
 603    intel->hHWContext = driContextPriv->hHWContext;
 604    intel->driFd = sPriv->fd;
 605    intel->driHwLock = sPriv->lock;
 606
 607    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 608                        intel->driScreen->myNum,
 609                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 610    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 611       intel->maxBatchSize = 4096;
 612    else
 613       intel->maxBatchSize = BATCH_SZ;
 614
 615    intel->bufmgr = intelScreen->bufmgr;
 616    intel->ttm = intelScreen->ttm;
 617    if (intel->ttm) {
 618       int bo_reuse_mode;
 619
 620       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 621       switch (bo_reuse_mode) {
 622       case DRI_CONF_BO_REUSE_DISABLED:
 623          break;
 624       case DRI_CONF_BO_REUSE_ALL:
 625          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 626          break;
 627       }
 628    }
 629
 630    /* This doesn't yet catch all non-conformant rendering, but it's a
 631     * start.
 632     */
 633    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 634       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 635       if (value > 0) {
 636          intel->conformance_mode = value;
 637       }
 638       else {
 639          intel->conformance_mode = 1;
 640       }
 641    }
 642
 643    if (intel->conformance_mode > 0) {
 644       ctx->Const.MinLineWidth = 1.0;
 645       ctx->Const.MinLineWidthAA = 1.0;
 646       ctx->Const.MaxLineWidth = 1.0;
 647       ctx->Const.MaxLineWidthAA = 1.0;
 648       ctx->Const.LineWidthGranularity = 1.0;
 649    }
 650    else {
 651       ctx->Const.MinLineWidth = 1.0;
 652       ctx->Const.MinLineWidthAA = 1.0;
 653       ctx->Const.MaxLineWidth = 5.0;
 654       ctx->Const.MaxLineWidthAA = 5.0;
 655       ctx->Const.LineWidthGranularity = 0.5;
 656    }
 657
 658    ctx->Const.MinPointSize = 1.0;
 659    ctx->Const.MinPointSizeAA = 1.0;
 660    ctx->Const.MaxPointSize = 255.0;
 661    ctx->Const.MaxPointSizeAA = 3.0;
 662    ctx->Const.PointSizeGranularity = 1.0;
 663
 664    /* reinitialize the context point state.
 665     * It depend on constants in __GLcontextRec::Const
 666     */
 667    _mesa_init_point(ctx);
 668
 669    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 670    if (IS_965(intelScreen->deviceID)) {
 671       if (MAX_WIDTH > 8192)
 672          ctx->Const.MaxRenderbufferSize = 8192;
 673    } else {
 674       if (MAX_WIDTH > 2048)
 675          ctx->Const.MaxRenderbufferSize = 2048;
 676    }
 677
 678    /* Initialize the software rasterizer and helper modules. */
 679    _swrast_CreateContext(ctx);
 680    _vbo_CreateContext(ctx);
 681    _tnl_CreateContext(ctx);
 682    _swsetup_CreateContext(ctx);
 683
 684    /* Configure swrast to match hardware characteristics: */
 685    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 686    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 687
 688    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 689    intel->hw_stipple = 1;
 690
 691    /* XXX FBO: this doesn't seem to be used anywhere */
 692    switch (mesaVis->depthBits) {
 693    case 0:                     /* what to do in this case? */
 694    case 16:
 695       intel->polygon_offset_scale = 1.0;
 696       break;
 697    case 24:
 698       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 699       break;
 700    default:
 701       assert(0);
 702       break;
 703    }
 704
 705    if (IS_965(intelScreen->deviceID))
 706       intel->polygon_offset_scale /= 0xffff;
 707
 708    intel->RenderIndex = ~0;
 709
 710    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 711    intel->irqsEmitted = 0;
 712
 713    intel->do_irqs = (intel->intelScreen->irq_active &&
 714                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 715
 716    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 717
 718    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 719       _mesa_printf("IRQs not active.  Exiting\n");
 720       exit(1);
 721    }
 722
 723    intelInitExtensions(ctx, GL_FALSE);
 724
 725    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 726    if (INTEL_DEBUG & DEBUG_BUFMGR)
 727       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 728
 729    if (!sPriv->dri2.enabled)
 730       intel_recreate_static_regions(intel);
 731
 732    intel->batch = intel_batchbuffer_alloc(intel);
 733
 734    intel_fbo_init(intel);
 735
 736    if (intel->ctx.Mesa_DXTn) {
 737       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 738       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 739    }
 740    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 741       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 742    }
 743    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 744                                                "texture_tiling");
 745    if (intel->use_texture_tiling &&
 746        !intel->intelScreen->kernel_exec_fencing) {
 747       fprintf(stderr, "No kernel support for execution fencing, "
 748               "disabling texture tiling");
 749       intel->use_texture_tiling = GL_FALSE;
 750    }
 751    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 752
 753    intel->prim.primitive = ~0;
 754
 755    /* Force all software fallbacks */
 756    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 757       fprintf(stderr, "disabling 3D rasterization\n");
 758       intel->no_rast = 1;
 759    }
 760
 761    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 762       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 763       intel->always_flush_batch = 1;
 764    }
 765
 766    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 767       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 768       intel->always_flush_cache = 1;
 769    }
 770
 771    /* Disable all hardware rendering (skip emitting batches and fences/waits
 772     * to the kernel)
 773     */
 774    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 775
 776    return GL_TRUE;
 777 }
 778
 779 void
 780 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 781 {
 782    struct intel_context *intel =
 783       (struct intel_context *) driContextPriv->driverPrivate;
 784
 785    assert(intel);               /* should never be null */
 786    if (intel) {
 787       GLboolean release_texture_heaps;
 788
 789       INTEL_FIREVERTICES(intel);
 790
 791       if (intel->clear.arrayObj)
 792          _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
 793
 794       intel->vtbl.destroy(intel);
 795
 796       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 797       _swsetup_DestroyContext(&intel->ctx);
 798       _tnl_DestroyContext(&intel->ctx);
 799       _vbo_DestroyContext(&intel->ctx);
 800
 801       _swrast_DestroyContext(&intel->ctx);
 802       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 803
 804       intel_batchbuffer_free(intel->batch);
 805       intel->batch = NULL;
 806
 807       free(intel->prim.vb);
 808       intel->prim.vb = NULL;
 809       dri_bo_unreference(intel->prim.vb_bo);
 810       intel->prim.vb_bo = NULL;
 811
 812       if (release_texture_heaps) {
 813          /* Nothing is currently done here to free texture heaps;
 814           * but we're not using the texture heap utilities, so I
 815           * rather think we shouldn't.  I've taken a look, and can't
 816           * find any private texture data hanging around anywhere, but
 817           * I'm not yet certain there isn't any at all...
 818           */
 819          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 820             fprintf(stderr, "do something to free texture heaps\n");
 821           */
 822       }
 823
 824       /* XXX In intelMakeCurrent() below, the context's static regions are
 825        * referenced inside the frame buffer; it's listed as a hack,
 826        * with a comment of "XXX FBO temporary fix-ups!", but
 827        * as long as it's there, we should release the regions here.
 828        * The do/while loop around the block is used to allow the
 829        * "continue" statements inside the block to exit the block,
 830        * to avoid many layers of "if" constructs.
 831        */
 832       do {
 833          __DRIdrawablePrivate * driDrawPriv = intel->driDrawable;
 834          struct intel_framebuffer *intel_fb;
 835          struct intel_renderbuffer *irbDepth, *irbStencil;
 836          if (!driDrawPriv) {
 837             /* We're already detached from the drawable; exit this block. */
 838             continue;
 839          }
 840          intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 841          if (!intel_fb) {
 842             /* The frame buffer is already gone; exit this block. */
 843             continue;
 844          }
 845          irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 846          irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 847
 848          /* If the regions of the frame buffer still match the regions
 849           * of the context, release them.  If they've changed somehow,
 850           * leave them alone.
 851           */
 852          if (intel_fb->color_rb[0] && intel_fb->color_rb[0]->region == intel->front_region) {
 853             intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 854          }
 855          if (intel_fb->color_rb[1] && intel_fb->color_rb[1]->region == intel->back_region) {
 856             intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 857          }
 858
 859          if (irbDepth && irbDepth->region == intel->depth_region) {
 860             intel_renderbuffer_set_region(irbDepth, NULL);
 861          }
 862          /* Usually, the stencil buffer is the same as the depth buffer;
 863           * but they're handled separately in MakeCurrent, so we'll
 864           * handle them separately here.
 865           */
 866          if (irbStencil && irbStencil->region == intel->depth_region) {
 867             intel_renderbuffer_set_region(irbStencil, NULL);
 868          }
 869       } while (0);
 870
 871       intel_region_release(&intel->front_region);
 872       intel_region_release(&intel->back_region);
 873       intel_region_release(&intel->depth_region);
 874
 875       driDestroyOptionCache(&intel->optionCache);
 876
 877       /* free the Mesa context */
 878       _mesa_free_context_data(&intel->ctx);
 879
 880
 881    }
 882 }
 883
 884 GLboolean
 885 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 886 {
 887    return GL_TRUE;
 888 }
 889
 890 GLboolean
 891 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 892                  __DRIdrawablePrivate * driDrawPriv,
 893                  __DRIdrawablePrivate * driReadPriv)
 894 {
 895    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 896
 897    if (driContextPriv) {
 898       struct intel_context *intel =
 899          (struct intel_context *) driContextPriv->driverPrivate;
 900       struct intel_framebuffer *intel_fb =
 901          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 902       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 903
 904       if (driContextPriv->driScreenPriv->dri2.enabled) {
 905           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 906           if (driDrawPriv != driReadPriv)
 907               intel_update_renderbuffers(driContextPriv, driReadPriv);
 908       } else {
 909           /* XXX FBO temporary fix-ups!  These are released in
 910            * intelDextroyContext(), above.  Changes here should be
 911            * reflected there.
 912            */
 913           /* if the renderbuffers don't have regions, init them from the context */
 914          struct intel_renderbuffer *irbDepth
 915             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 916          struct intel_renderbuffer *irbStencil
 917             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 918
 919          if (intel_fb->color_rb[0]) {
 920             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 921                                           intel->front_region);
 922          }
 923          if (intel_fb->color_rb[1]) {
 924             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 925                                           intel->back_region);
 926          }
 927
 928          if (irbDepth) {
 929             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 930          }
 931          if (irbStencil) {
 932             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 933          }
 934       }
 935
 936       /* set GLframebuffer size to match window, if needed */
 937       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 938
 939       if (driReadPriv != driDrawPriv) {
 940          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 941       }
 942
 943       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 944
 945       /* The drawbuffer won't always be updated by _mesa_make_current:
 946        */
 947       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 948
 949          if (intel->driReadDrawable != driReadPriv)
 950             intel->driReadDrawable = driReadPriv;
 951
 952          if (intel->driDrawable != driDrawPriv) {
 953             if (driDrawPriv->swap_interval == (unsigned)-1) {
 954                int i;
 955
 956                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 957                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 958                  : VBLANK_FLAG_NO_IRQ;
 959
 960                /* Prevent error printf if one crtc is disabled, this will
 961                 * be properly calculated in intelWindowMoved() next.
 962                 */
 963                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 964
 965                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 966                driDrawableInitVBlank(driDrawPriv);
 967                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 968
 969                for (i = 0; i < 2; i++) {
 970                   if (intel_fb->color_rb[i])
 971                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 972                }
 973             }
 974             intel->driDrawable = driDrawPriv;
 975             intelWindowMoved(intel);
 976          }
 977
 978          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 979       }
 980    }
 981    else {
 982       _mesa_make_current(NULL, NULL, NULL);
 983    }
 984
 985    return GL_TRUE;
 986 }
 987
 988 static void
 989 intelContendedLock(struct intel_context *intel, GLuint flags)
 990 {
 991    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 992    __DRIscreenPrivate *sPriv = intel->driScreen;
 993    volatile drm_i915_sarea_t *sarea = intel->sarea;
 994    int me = intel->hHWContext;
 995
 996    drmGetLock(intel->driFd, intel->hHWContext, flags);
 997    intel->locked = 1;
 998
 999    if (INTEL_DEBUG & DEBUG_LOCK)
1000       _mesa_printf("%s - got contended lock\n", __progname);
1001
1002    /* If the window moved, may need to set a new cliprect now.
1003     *
1004     * NOTE: This releases and regains the hw lock, so all state
1005     * checking must be done *after* this call:
1006     */
1007    if (dPriv)
1008        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1009
1010    if (sarea && sarea->ctxOwner != me) {
1011       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1012          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1013                  sarea->ctxOwner, me);
1014       }
1015       sarea->ctxOwner = me;
1016    }
1017
1018    /* If the last consumer of the texture memory wasn't us, notify the fake
1019     * bufmgr and record the new owner.  We should have the memory shared
1020     * between contexts of a single fake bufmgr, but this will at least make
1021     * things correct for now.
1022     */
1023    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1024       sarea->texAge = intel->hHWContext;
1025       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1026       if (INTEL_DEBUG & DEBUG_BATCH)
1027          intel_decode_context_reset();
1028       if (INTEL_DEBUG & DEBUG_BUFMGR)
1029          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1030                  sarea->ctxOwner, intel->hHWContext);
1031    }
1032
1033    /* Drawable changed?
1034     */
1035    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1036        intelWindowMoved(intel);
1037        intel->lastStamp = dPriv->lastStamp;
1038    }
1039 }
1040
1041
1042 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1043
1044 /* Lock the hardware and validate our state.
1045  */
1046 void LOCK_HARDWARE( struct intel_context *intel )
1047 {
1048     __DRIdrawable *dPriv = intel->driDrawable;
1049     __DRIscreen *sPriv = intel->driScreen;
1050     char __ret = 0;
1051     struct intel_framebuffer *intel_fb = NULL;
1052     struct intel_renderbuffer *intel_rb = NULL;
1053
1054     _glthread_LOCK_MUTEX(lockMutex);
1055     assert(!intel->locked);
1056     intel->locked = 1;
1057
1058     if (intel->driDrawable) {
1059        intel_fb = intel->driDrawable->driverPrivate;
1060
1061        if (intel_fb)
1062           intel_rb =
1063              intel_get_renderbuffer(&intel_fb->Base,
1064                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1065     }
1066
1067     if (intel_rb && dPriv->vblFlags &&
1068         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1069         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1070         drmVBlank vbl;
1071
1072         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1073
1074         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1075             vbl.request.type |= DRM_VBLANK_SECONDARY;
1076         }
1077
1078         vbl.request.sequence = intel_rb->vbl_pending;
1079         drmWaitVBlank(intel->driFd, &vbl);
1080         intel_fb->vbl_waited = vbl.reply.sequence;
1081     }
1082
1083     if (!sPriv->dri2.enabled) {
1084         DRM_CAS(intel->driHwLock, intel->hHWContext,
1085                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1086
1087         if (__ret)
1088             intelContendedLock( intel, 0 );
1089     }
1090
1091
1092     if (INTEL_DEBUG & DEBUG_LOCK)
1093       _mesa_printf("%s - locked\n", __progname);
1094 }
1095
1096
1097 /* Unlock the hardware using the global current context
1098  */
1099 void UNLOCK_HARDWARE( struct intel_context *intel )
1100 {
1101     __DRIscreen *sPriv = intel->driScreen;
1102
1103    intel->vtbl.note_unlock( intel );
1104    intel->locked = 0;
1105
1106    if (!sPriv->dri2.enabled)
1107       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1108
1109    _glthread_UNLOCK_MUTEX(lockMutex);
1110
1111    if (INTEL_DEBUG & DEBUG_LOCK)
1112       _mesa_printf("%s - unlocked\n", __progname);
1113
1114    /**
1115     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1116     * cliprects.
1117     */
1118    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1119       intel_batchbuffer_flush(intel->batch);
1120 }
1121