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 || !intel_fb->color_rb[1])
 224            && intel_fb->color_rb[0]) {
 225          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 226          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 227       }
 228
 229       if (intel_fb->color_rb[1]) {
 230          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 231          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 232       }
 233
 234       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 235       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 236
 237       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 238          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 239          attachments[i++] = intel_bits_per_pixel(depth_rb);
 240       } else if (depth_rb != NULL) {
 241          attachments[i++] = __DRI_BUFFER_DEPTH;
 242          attachments[i++] = intel_bits_per_pixel(depth_rb);
 243       } else if (stencil_rb != NULL) {
 244          attachments[i++] = __DRI_BUFFER_STENCIL;
 245          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 246       }
 247
 248       buffers =
 249          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 250                                                       &drawable->w,
 251                                                       &drawable->h,
 252                                                       attachments, i / 2,
 253                                                       &count,
 254                                                       drawable->loaderPrivate);
 255    } else if (screen->dri2.loader) {
 256       i = 0;
 257       if (intel_fb->color_rb[0])
 258          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 259       if (intel_fb->color_rb[1])
 260          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 261       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 262          attachments[i++] = __DRI_BUFFER_DEPTH;
 263       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 264          attachments[i++] = __DRI_BUFFER_STENCIL;
 265
 266       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 267                                                    &drawable->w,
 268                                                    &drawable->h,
 269                                                    attachments, i,
 270                                                    &count,
 271                                                    drawable->loaderPrivate);
 272    }
 273
 274    if (buffers == NULL)
 275       return;
 276
 277    drawable->x = 0;
 278    drawable->y = 0;
 279    drawable->backX = 0;
 280    drawable->backY = 0;
 281    drawable->numClipRects = 1;
 282    drawable->pClipRects[0].x1 = 0;
 283    drawable->pClipRects[0].y1 = 0;
 284    drawable->pClipRects[0].x2 = drawable->w;
 285    drawable->pClipRects[0].y2 = drawable->h;
 286    drawable->numBackClipRects = 1;
 287    drawable->pBackClipRects[0].x1 = 0;
 288    drawable->pBackClipRects[0].y1 = 0;
 289    drawable->pBackClipRects[0].x2 = drawable->w;
 290    drawable->pBackClipRects[0].y2 = drawable->h;
 291
 292    depth_region = NULL;
 293    for (i = 0; i < count; i++) {
 294        switch (buffers[i].attachment) {
 295        case __DRI_BUFFER_FRONT_LEFT:
 296            rb = intel_fb->color_rb[0];
 297            region_name = "dri2 front buffer";
 298            break;
 299
 300        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 301            rb = intel_fb->color_rb[0];
 302            region_name = "dri2 fake front buffer";
 303            break;
 304
 305        case __DRI_BUFFER_BACK_LEFT:
 306            rb = intel_fb->color_rb[1];
 307            region_name = "dri2 back buffer";
 308            break;
 309
 310        case __DRI_BUFFER_DEPTH:
 311            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 312            region_name = "dri2 depth buffer";
 313            break;
 314
 315        case __DRI_BUFFER_DEPTH_STENCIL:
 316            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 317            region_name = "dri2 depth / stencil buffer";
 318            break;
 319
 320        case __DRI_BUFFER_STENCIL:
 321            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 322            region_name = "dri2 stencil buffer";
 323            break;
 324
 325        case __DRI_BUFFER_ACCUM:
 326        default:
 327            fprintf(stderr,
 328                    "unhandled buffer attach event, attacment type %d\n",
 329                    buffers[i].attachment);
 330            return;
 331        }
 332
 333        if (rb == NULL)
 334           continue;
 335
 336        if (rb->region) {
 337           dri_bo_flink(rb->region->buffer, &name);
 338           if (name == buffers[i].name)
 339              continue;
 340        }
 341
 342        if (INTEL_DEBUG & DEBUG_DRI)
 343           fprintf(stderr,
 344                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 345                   buffers[i].name, buffers[i].attachment,
 346                   buffers[i].cpp, buffers[i].pitch);
 347
 348        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 349           if (INTEL_DEBUG & DEBUG_DRI)
 350              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 351           intel_region_reference(&region, depth_region);
 352        }
 353        else
 354           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 355                                                  drawable->w,
 356                                                  drawable->h,
 357                                                  buffers[i].pitch / buffers[i].cpp,
 358                                                  buffers[i].name,
 359                                                  region_name);
 360
 361        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 362           depth_region = region;
 363
 364        intel_renderbuffer_set_region(rb, region);
 365        intel_region_release(&region);
 366
 367        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 368           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 369           if (rb != NULL) {
 370              struct intel_region *stencil_region = NULL;
 371
 372              if (rb->region) {
 373                 dri_bo_flink(rb->region->buffer, &name);
 374                 if (name == buffers[i].name)
 375                    continue;
 376              }
 377
 378              intel_region_reference(&stencil_region, region);
 379              intel_renderbuffer_set_region(rb, stencil_region);
 380              intel_region_release(&stencil_region);
 381           }
 382        }
 383    }
 384
 385    driUpdateFramebufferSize(&intel->ctx, drawable);
 386 }
 387
 388 void
 389 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 390 {
 391     struct intel_context *intel = intel_context(ctx);
 392     __DRIcontext *driContext = intel->driContext;
 393     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 394                          GLsizei w, GLsizei h);
 395
 396     if (!driContext->driScreenPriv->dri2.enabled)
 397         return;
 398
 399     if (!intel->internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 400        /* If we're rendering to the fake front buffer, make sure all the pending
 401         * drawing has landed on the real front buffer.  Otherwise when we
 402         * eventually get to DRI2GetBuffersWithFormat the stale real front
 403         * buffer contents will get copied to the new fake front buffer.
 404         */
 405        if (intel->is_front_buffer_rendering) {
 406           intel_flush(ctx, GL_FALSE);
 407        }
 408
 409        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 410        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 411           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 412     }
 413
 414     old_viewport = ctx->Driver.Viewport;
 415     ctx->Driver.Viewport = NULL;
 416     intel->driDrawable = driContext->driDrawablePriv;
 417     intelWindowMoved(intel);
 418     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 419     ctx->Driver.Viewport = old_viewport;
 420 }
 421
 422
 423 static const struct dri_debug_control debug_control[] = {
 424    { "tex",   DEBUG_TEXTURE},
 425    { "state", DEBUG_STATE},
 426    { "ioctl", DEBUG_IOCTL},
 427    { "blit",  DEBUG_BLIT},
 428    { "mip",   DEBUG_MIPTREE},
 429    { "fall",  DEBUG_FALLBACKS},
 430    { "verb",  DEBUG_VERBOSE},
 431    { "bat",   DEBUG_BATCH},
 432    { "pix",   DEBUG_PIXEL},
 433    { "buf",   DEBUG_BUFMGR},
 434    { "reg",   DEBUG_REGION},
 435    { "fbo",   DEBUG_FBO},
 436    { "lock",  DEBUG_LOCK},
 437    { "sync",  DEBUG_SYNC},
 438    { "prim",  DEBUG_PRIMS },
 439    { "vert",  DEBUG_VERTS },
 440    { "dri",   DEBUG_DRI },
 441    { "dma",   DEBUG_DMA },
 442    { "san",   DEBUG_SANITY },
 443    { "sleep", DEBUG_SLEEP },
 444    { "stats", DEBUG_STATS },
 445    { "tile",  DEBUG_TILE },
 446    { "sing",  DEBUG_SINGLE_THREAD },
 447    { "thre",  DEBUG_SINGLE_THREAD },
 448    { "wm",    DEBUG_WM },
 449    { "urb",   DEBUG_URB },
 450    { "vs",    DEBUG_VS },
 451    { NULL,    0 }
 452 };
 453
 454
 455 static void
 456 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 457 {
 458     struct intel_context *intel = intel_context(ctx);
 459
 460    _swrast_InvalidateState(ctx, new_state);
 461    _swsetup_InvalidateState(ctx, new_state);
 462    _vbo_InvalidateState(ctx, new_state);
 463    _tnl_InvalidateState(ctx, new_state);
 464    _tnl_invalidate_vertex_state(ctx, new_state);
 465
 466    intel->NewGLState |= new_state;
 467
 468    if (intel->vtbl.invalidate_state)
 469       intel->vtbl.invalidate_state( intel, new_state );
 470 }
 471
 472 static void
 473 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 474 {
 475    struct intel_context *intel = intel_context(ctx);
 476
 477    if (intel->Fallback)
 478       _swrast_flush(ctx);
 479
 480    if (!IS_965(intel->intelScreen->deviceID))
 481       INTEL_FIREVERTICES(intel);
 482
 483    /* Emit a flush so that any frontbuffer rendering that might have occurred
 484     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 485     * a flush for us.
 486     */
 487    if (needs_mi_flush)
 488       intel_batchbuffer_emit_mi_flush(intel->batch);
 489
 490    if (intel->batch->map != intel->batch->ptr)
 491       intel_batchbuffer_flush(intel->batch);
 492
 493    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 494       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 495
 496       if (screen->dri2.loader &&
 497           (screen->dri2.loader->base.version >= 2)
 498           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 499          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 500                                                   intel->driDrawable->loaderPrivate);
 501
 502          /* Only clear the dirty bit if front-buffer rendering is no longer
 503           * enabled.  This is done so that the dirty bit can only be set in
 504           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 505           * each of N places that do rendering.  This has worse performances,
 506           * but it is much easier to get correct.
 507           */
 508          if (intel->is_front_buffer_rendering) {
 509             intel->front_buffer_dirty = GL_FALSE;
 510          }
 511       }
 512    }
 513 }
 514
 515 void
 516 intelFlush(GLcontext * ctx)
 517 {
 518    intel_flush(ctx, GL_FALSE);
 519 }
 520
 521 static void
 522 intel_glFlush(GLcontext *ctx)
 523 {
 524    intel_flush(ctx, GL_TRUE);
 525 }
 526
 527 void
 528 intelFinish(GLcontext * ctx)
 529 {
 530    struct gl_framebuffer *fb = ctx->DrawBuffer;
 531    int i;
 532
 533    intelFlush(ctx);
 534
 535    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 536        struct intel_renderbuffer *irb;
 537
 538        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 539
 540        if (irb && irb->region)
 541           dri_bo_wait_rendering(irb->region->buffer);
 542    }
 543    if (fb->_DepthBuffer) {
 544       /* XXX: Wait on buffer idle */
 545    }
 546 }
 547
 548 void
 549 intelInitDriverFunctions(struct dd_function_table *functions)
 550 {
 551    _mesa_init_driver_functions(functions);
 552
 553    functions->Flush = intel_glFlush;
 554    functions->Finish = intelFinish;
 555    functions->GetString = intelGetString;
 556    functions->UpdateState = intelInvalidateState;
 557
 558    functions->CopyColorTable = _swrast_CopyColorTable;
 559    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 560    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 561    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 562
 563    intelInitTextureFuncs(functions);
 564    intelInitStateFuncs(functions);
 565    intelInitClearFuncs(functions);
 566    intelInitBufferFuncs(functions);
 567    intelInitPixelFuncs(functions);
 568 }
 569
 570
 571 GLboolean
 572 intelInitContext(struct intel_context *intel,
 573                  const __GLcontextModes * mesaVis,
 574                  __DRIcontextPrivate * driContextPriv,
 575                  void *sharedContextPrivate,
 576                  struct dd_function_table *functions)
 577 {
 578    GLcontext *ctx = &intel->ctx;
 579    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 580    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 581    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 582    int fthrottle_mode;
 583
 584    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 585                                  functions, (void *) intel)) {
 586       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 587       return GL_FALSE;
 588    }
 589
 590    driContextPriv->driverPrivate = intel;
 591    intel->intelScreen = intelScreen;
 592    intel->driScreen = sPriv;
 593    intel->sarea = intelScreen->sarea;
 594    intel->driContext = driContextPriv;
 595
 596    /* Dri stuff */
 597    intel->hHWContext = driContextPriv->hHWContext;
 598    intel->driFd = sPriv->fd;
 599    intel->driHwLock = sPriv->lock;
 600
 601    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 602                        intel->driScreen->myNum,
 603                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 604    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 605       intel->maxBatchSize = 4096;
 606    else
 607       intel->maxBatchSize = BATCH_SZ;
 608
 609    intel->bufmgr = intelScreen->bufmgr;
 610    intel->ttm = intelScreen->ttm;
 611    if (intel->ttm) {
 612       int bo_reuse_mode;
 613
 614       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 615       switch (bo_reuse_mode) {
 616       case DRI_CONF_BO_REUSE_DISABLED:
 617          break;
 618       case DRI_CONF_BO_REUSE_ALL:
 619          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 620          break;
 621       }
 622    }
 623
 624    /* This doesn't yet catch all non-conformant rendering, but it's a
 625     * start.
 626     */
 627    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 628       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 629       if (value > 0) {
 630          intel->conformance_mode = value;
 631       }
 632       else {
 633          intel->conformance_mode = 1;
 634       }
 635    }
 636
 637    if (intel->conformance_mode > 0) {
 638       ctx->Const.MinLineWidth = 1.0;
 639       ctx->Const.MinLineWidthAA = 1.0;
 640       ctx->Const.MaxLineWidth = 1.0;
 641       ctx->Const.MaxLineWidthAA = 1.0;
 642       ctx->Const.LineWidthGranularity = 1.0;
 643    }
 644    else {
 645       ctx->Const.MinLineWidth = 1.0;
 646       ctx->Const.MinLineWidthAA = 1.0;
 647       ctx->Const.MaxLineWidth = 5.0;
 648       ctx->Const.MaxLineWidthAA = 5.0;
 649       ctx->Const.LineWidthGranularity = 0.5;
 650    }
 651
 652    ctx->Const.MinPointSize = 1.0;
 653    ctx->Const.MinPointSizeAA = 1.0;
 654    ctx->Const.MaxPointSize = 255.0;
 655    ctx->Const.MaxPointSizeAA = 3.0;
 656    ctx->Const.PointSizeGranularity = 1.0;
 657
 658    /* reinitialize the context point state.
 659     * It depend on constants in __GLcontextRec::Const
 660     */
 661    _mesa_init_point(ctx);
 662
 663    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 664
 665    /* Initialize the software rasterizer and helper modules. */
 666    _swrast_CreateContext(ctx);
 667    _vbo_CreateContext(ctx);
 668    _tnl_CreateContext(ctx);
 669    _swsetup_CreateContext(ctx);
 670
 671    /* Configure swrast to match hardware characteristics: */
 672    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 673    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 674
 675    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 676    intel->hw_stipple = 1;
 677
 678    /* XXX FBO: this doesn't seem to be used anywhere */
 679    switch (mesaVis->depthBits) {
 680    case 0:                     /* what to do in this case? */
 681    case 16:
 682       intel->polygon_offset_scale = 1.0;
 683       break;
 684    case 24:
 685       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 686       break;
 687    default:
 688       assert(0);
 689       break;
 690    }
 691
 692    if (IS_965(intelScreen->deviceID))
 693       intel->polygon_offset_scale /= 0xffff;
 694
 695    intel->RenderIndex = ~0;
 696
 697    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 698    intel->irqsEmitted = 0;
 699
 700    intel->do_irqs = (intel->intelScreen->irq_active &&
 701                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 702
 703    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 704
 705    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 706       _mesa_printf("IRQs not active.  Exiting\n");
 707       exit(1);
 708    }
 709
 710    intelInitExtensions(ctx, GL_FALSE);
 711
 712    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 713    if (INTEL_DEBUG & DEBUG_BUFMGR)
 714       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 715
 716    if (!sPriv->dri2.enabled)
 717       intel_recreate_static_regions(intel);
 718
 719    intel->batch = intel_batchbuffer_alloc(intel);
 720
 721    intel_bufferobj_init(intel);
 722    intel_fbo_init(intel);
 723
 724    if (intel->ctx.Mesa_DXTn) {
 725       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 726       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 727    }
 728    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 729       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 730    }
 731
 732    intel->prim.primitive = ~0;
 733
 734    /* Force all software fallbacks */
 735    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 736       fprintf(stderr, "disabling 3D rasterization\n");
 737       intel->no_rast = 1;
 738    }
 739
 740    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 741       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 742       intel->always_flush_batch = 1;
 743    }
 744
 745    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 746       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 747       intel->always_flush_cache = 1;
 748    }
 749
 750    /* Disable all hardware rendering (skip emitting batches and fences/waits
 751     * to the kernel)
 752     */
 753    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 754
 755    return GL_TRUE;
 756 }
 757
 758 void
 759 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 760 {
 761    struct intel_context *intel =
 762       (struct intel_context *) driContextPriv->driverPrivate;
 763
 764    assert(intel);               /* should never be null */
 765    if (intel) {
 766       GLboolean release_texture_heaps;
 767
 768       INTEL_FIREVERTICES(intel);
 769
 770       if (intel->clear.arrayObj)
 771          _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
 772
 773       intel->vtbl.destroy(intel);
 774
 775       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 776       _swsetup_DestroyContext(&intel->ctx);
 777       _tnl_DestroyContext(&intel->ctx);
 778       _vbo_DestroyContext(&intel->ctx);
 779
 780       _swrast_DestroyContext(&intel->ctx);
 781       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 782
 783       intel_batchbuffer_free(intel->batch);
 784       intel->batch = NULL;
 785
 786       free(intel->prim.vb);
 787       intel->prim.vb = NULL;
 788       dri_bo_unreference(intel->prim.vb_bo);
 789       intel->prim.vb_bo = NULL;
 790
 791       if (release_texture_heaps) {
 792          /* This share group is about to go away, free our private
 793           * texture object data.
 794           */
 795          if (INTEL_DEBUG & DEBUG_TEXTURE)
 796             fprintf(stderr, "do something to free texture heaps\n");
 797       }
 798
 799       intel_region_release(&intel->front_region);
 800       intel_region_release(&intel->back_region);
 801       intel_region_release(&intel->depth_region);
 802
 803       driDestroyOptionCache(&intel->optionCache);
 804
 805       /* free the Mesa context */
 806       _mesa_free_context_data(&intel->ctx);
 807    }
 808 }
 809
 810 GLboolean
 811 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 812 {
 813    return GL_TRUE;
 814 }
 815
 816 GLboolean
 817 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 818                  __DRIdrawablePrivate * driDrawPriv,
 819                  __DRIdrawablePrivate * driReadPriv)
 820 {
 821    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 822
 823    if (driContextPriv) {
 824       struct intel_context *intel =
 825          (struct intel_context *) driContextPriv->driverPrivate;
 826       struct intel_framebuffer *intel_fb =
 827          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 828       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 829
 830       if (driContextPriv->driScreenPriv->dri2.enabled) {
 831           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 832           if (driDrawPriv != driReadPriv)
 833               intel_update_renderbuffers(driContextPriv, driReadPriv);
 834       } else {
 835           /* XXX FBO temporary fix-ups! */
 836           /* if the renderbuffers don't have regions, init them from the context */
 837          struct intel_renderbuffer *irbDepth
 838             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 839          struct intel_renderbuffer *irbStencil
 840             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 841
 842          if (intel_fb->color_rb[0]) {
 843             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 844                                           intel->front_region);
 845          }
 846          if (intel_fb->color_rb[1]) {
 847             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 848                                           intel->back_region);
 849          }
 850
 851          if (irbDepth) {
 852             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 853          }
 854          if (irbStencil) {
 855             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 856          }
 857       }
 858
 859       /* set GLframebuffer size to match window, if needed */
 860       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 861
 862       if (driReadPriv != driDrawPriv) {
 863          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 864       }
 865
 866       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 867
 868       /* The drawbuffer won't always be updated by _mesa_make_current:
 869        */
 870       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 871
 872          if (intel->driReadDrawable != driReadPriv)
 873             intel->driReadDrawable = driReadPriv;
 874
 875          if (intel->driDrawable != driDrawPriv) {
 876             if (driDrawPriv->swap_interval == (unsigned)-1) {
 877                int i;
 878
 879                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 880                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 881                  : VBLANK_FLAG_NO_IRQ;
 882
 883                /* Prevent error printf if one crtc is disabled, this will
 884                 * be properly calculated in intelWindowMoved() next.
 885                 */
 886                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 887
 888                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 889                driDrawableInitVBlank(driDrawPriv);
 890                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 891
 892                for (i = 0; i < 2; i++) {
 893                   if (intel_fb->color_rb[i])
 894                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 895                }
 896             }
 897             intel->driDrawable = driDrawPriv;
 898             intelWindowMoved(intel);
 899          }
 900
 901          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 902       }
 903    }
 904    else {
 905       _mesa_make_current(NULL, NULL, NULL);
 906    }
 907
 908    return GL_TRUE;
 909 }
 910
 911 static void
 912 intelContendedLock(struct intel_context *intel, GLuint flags)
 913 {
 914    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 915    __DRIscreenPrivate *sPriv = intel->driScreen;
 916    volatile drm_i915_sarea_t *sarea = intel->sarea;
 917    int me = intel->hHWContext;
 918
 919    drmGetLock(intel->driFd, intel->hHWContext, flags);
 920    intel->locked = 1;
 921
 922    if (INTEL_DEBUG & DEBUG_LOCK)
 923       _mesa_printf("%s - got contended lock\n", __progname);
 924
 925    /* If the window moved, may need to set a new cliprect now.
 926     *
 927     * NOTE: This releases and regains the hw lock, so all state
 928     * checking must be done *after* this call:
 929     */
 930    if (dPriv)
 931        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 932
 933    if (sarea && sarea->ctxOwner != me) {
 934       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 935          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 936                  sarea->ctxOwner, me);
 937       }
 938       sarea->ctxOwner = me;
 939    }
 940
 941    /* If the last consumer of the texture memory wasn't us, notify the fake
 942     * bufmgr and record the new owner.  We should have the memory shared
 943     * between contexts of a single fake bufmgr, but this will at least make
 944     * things correct for now.
 945     */
 946    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 947       sarea->texAge = intel->hHWContext;
 948       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 949       if (INTEL_DEBUG & DEBUG_BATCH)
 950          intel_decode_context_reset();
 951       if (INTEL_DEBUG & DEBUG_BUFMGR)
 952          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 953                  sarea->ctxOwner, intel->hHWContext);
 954    }
 955
 956    /* Drawable changed?
 957     */
 958    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 959        intelWindowMoved(intel);
 960        intel->lastStamp = dPriv->lastStamp;
 961    }
 962 }
 963
 964
 965 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 966
 967 /* Lock the hardware and validate our state.
 968  */
 969 void LOCK_HARDWARE( struct intel_context *intel )
 970 {
 971     __DRIdrawable *dPriv = intel->driDrawable;
 972     __DRIscreen *sPriv = intel->driScreen;
 973     char __ret = 0;
 974     struct intel_framebuffer *intel_fb = NULL;
 975     struct intel_renderbuffer *intel_rb = NULL;
 976
 977     _glthread_LOCK_MUTEX(lockMutex);
 978     assert(!intel->locked);
 979     intel->locked = 1;
 980
 981     if (intel->driDrawable) {
 982        intel_fb = intel->driDrawable->driverPrivate;
 983
 984        if (intel_fb)
 985           intel_rb =
 986              intel_get_renderbuffer(&intel_fb->Base,
 987                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 988     }
 989
 990     if (intel_rb && dPriv->vblFlags &&
 991         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 992         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 993         drmVBlank vbl;
 994
 995         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 996
 997         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 998             vbl.request.type |= DRM_VBLANK_SECONDARY;
 999         }
1000
1001         vbl.request.sequence = intel_rb->vbl_pending;
1002         drmWaitVBlank(intel->driFd, &vbl);
1003         intel_fb->vbl_waited = vbl.reply.sequence;
1004     }
1005
1006     if (!sPriv->dri2.enabled) {
1007         DRM_CAS(intel->driHwLock, intel->hHWContext,
1008                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1009
1010         if (__ret)
1011             intelContendedLock( intel, 0 );
1012     }
1013
1014
1015     if (INTEL_DEBUG & DEBUG_LOCK)
1016       _mesa_printf("%s - locked\n", __progname);
1017 }
1018
1019
1020 /* Unlock the hardware using the global current context
1021  */
1022 void UNLOCK_HARDWARE( struct intel_context *intel )
1023 {
1024     __DRIscreen *sPriv = intel->driScreen;
1025
1026    intel->vtbl.note_unlock( intel );
1027    intel->locked = 0;
1028
1029    if (!sPriv->dri2.enabled)
1030       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1031
1032    _glthread_UNLOCK_MUTEX(lockMutex);
1033
1034    if (INTEL_DEBUG & DEBUG_LOCK)
1035       _mesa_printf("%s - unlocked\n", __progname);
1036
1037    /**
1038     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1039     * cliprects.
1040     */
1041    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1042       intel_batchbuffer_flush(intel->batch);
1043 }
1044