src/mesa/drivers/dri/intel/intel_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/extensions.h"
  32 #include "main/framebuffer.h"
  33 #include "main/imports.h"
  34 #include "main/points.h"
  35
  36 #include "swrast/swrast.h"
  37 #include "swrast_setup/swrast_setup.h"
  38 #include "tnl/tnl.h"
  39 #include "drivers/common/driverfuncs.h"
  40 #include "drivers/common/meta.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_bufmgr.h"
  55 #include "intel_screen.h"
  56
  57 #include "drirenderbuffer.h"
  58 #include "utils.h"
  59
  60
  61 #ifndef INTEL_DEBUG
  62 int INTEL_DEBUG = (0);
  63 #endif
  64
  65
  66 #define DRIVER_DATE                     "20091221 DEVELOPMENT"
  67 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  68
  69
  70 static const GLubyte *
  71 intelGetString(GLcontext * ctx, GLenum name)
  72 {
  73    const struct intel_context *const intel = intel_context(ctx);
  74    const char *chipset;
  75    static char buffer[128];
  76
  77    switch (name) {
  78    case GL_VENDOR:
  79       return (GLubyte *) "Tungsten Graphics, Inc";
  80       break;
  81
  82    case GL_RENDERER:
  83       switch (intel->intelScreen->deviceID) {
  84       case PCI_CHIP_845_G:
  85          chipset = "Intel(R) 845G";
  86          break;
  87       case PCI_CHIP_I830_M:
  88          chipset = "Intel(R) 830M";
  89          break;
  90       case PCI_CHIP_I855_GM:
  91          chipset = "Intel(R) 852GM/855GM";
  92          break;
  93       case PCI_CHIP_I865_G:
  94          chipset = "Intel(R) 865G";
  95          break;
  96       case PCI_CHIP_I915_G:
  97          chipset = "Intel(R) 915G";
  98          break;
  99       case PCI_CHIP_E7221_G:
 100          chipset = "Intel (R) E7221G (i915)";
 101          break;
 102       case PCI_CHIP_I915_GM:
 103          chipset = "Intel(R) 915GM";
 104          break;
 105       case PCI_CHIP_I945_G:
 106          chipset = "Intel(R) 945G";
 107          break;
 108       case PCI_CHIP_I945_GM:
 109          chipset = "Intel(R) 945GM";
 110          break;
 111       case PCI_CHIP_I945_GME:
 112          chipset = "Intel(R) 945GME";
 113          break;
 114       case PCI_CHIP_G33_G:
 115          chipset = "Intel(R) G33";
 116          break;
 117       case PCI_CHIP_Q35_G:
 118          chipset = "Intel(R) Q35";
 119          break;
 120       case PCI_CHIP_Q33_G:
 121          chipset = "Intel(R) Q33";
 122          break;
 123       case PCI_CHIP_IGD_GM:
 124       case PCI_CHIP_IGD_G:
 125          chipset = "Intel(R) IGD";
 126          break;
 127       case PCI_CHIP_I965_Q:
 128          chipset = "Intel(R) 965Q";
 129          break;
 130       case PCI_CHIP_I965_G:
 131       case PCI_CHIP_I965_G_1:
 132          chipset = "Intel(R) 965G";
 133          break;
 134       case PCI_CHIP_I946_GZ:
 135          chipset = "Intel(R) 946GZ";
 136          break;
 137       case PCI_CHIP_I965_GM:
 138          chipset = "Intel(R) 965GM";
 139          break;
 140       case PCI_CHIP_I965_GME:
 141          chipset = "Intel(R) 965GME/GLE";
 142          break;
 143       case PCI_CHIP_GM45_GM:
 144          chipset = "Mobile Intel® GM45 Express Chipset";
 145          break;
 146       case PCI_CHIP_IGD_E_G:
 147          chipset = "Intel(R) Integrated Graphics Device";
 148          break;
 149       case PCI_CHIP_G45_G:
 150          chipset = "Intel(R) G45/G43";
 151          break;
 152       case PCI_CHIP_Q45_G:
 153          chipset = "Intel(R) Q45/Q43";
 154          break;
 155       case PCI_CHIP_G41_G:
 156          chipset = "Intel(R) G41";
 157          break;
 158       case PCI_CHIP_B43_G:
 159          chipset = "Intel(R) B43";
 160          break;
 161       case PCI_CHIP_ILD_G:
 162          chipset = "Intel(R) IGDNG_D";
 163          break;
 164       case PCI_CHIP_ILM_G:
 165          chipset = "Intel(R) IGDNG_M";
 166          break;
 167       default:
 168          chipset = "Unknown Intel Chipset";
 169          break;
 170       }
 171
 172       (void) driGetRendererString(buffer, chipset, DRIVER_DATE_GEM, 0);
 173       return (GLubyte *) buffer;
 174
 175    default:
 176       return NULL;
 177    }
 178 }
 179
 180 static unsigned
 181 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 182 {
 183    return _mesa_get_format_bytes(rb->Base.Format) * 8;
 184 }
 185
 186 void
 187 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 188 {
 189    struct gl_framebuffer *fb = drawable->driverPrivate;
 190    struct intel_renderbuffer *rb;
 191    struct intel_region *region, *depth_region;
 192    struct intel_context *intel = context->driverPrivate;
 193    struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
 194    __DRIbuffer *buffers = NULL;
 195    __DRIscreen *screen;
 196    int i, count;
 197    unsigned int attachments[10];
 198    const char *region_name;
 199
 200    /* If we're rendering to the fake front buffer, make sure all the
 201     * pending drawing has landed on the real front buffer.  Otherwise
 202     * when we eventually get to DRI2GetBuffersWithFormat the stale
 203     * real front buffer contents will get copied to the new fake front
 204     * buffer.
 205     */
 206    if (intel->is_front_buffer_rendering)
 207       intel_flush(&intel->ctx, GL_FALSE);
 208
 209    /* Set this up front, so that in case our buffers get invalidated
 210     * while we're getting new buffers, we don't clobber the stamp and
 211     * thus ignore the invalidate. */
 212    drawable->lastStamp = drawable->dri2.stamp;
 213
 214    if (INTEL_DEBUG & DEBUG_DRI)
 215       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 216
 217    screen = intel->intelScreen->driScrnPriv;
 218
 219    if (screen->dri2.loader
 220        && (screen->dri2.loader->base.version > 2)
 221        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 222
 223       front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 224       back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 225       depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 226       stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 227
 228       i = 0;
 229       if ((intel->is_front_buffer_rendering ||
 230            intel->is_front_buffer_reading ||
 231            !back_rb) && front_rb) {
 232          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 233          attachments[i++] = intel_bits_per_pixel(front_rb);
 234       }
 235
 236       if (back_rb) {
 237          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 238          attachments[i++] = intel_bits_per_pixel(back_rb);
 239       }
 240
 241       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 242          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 243          attachments[i++] = intel_bits_per_pixel(depth_rb);
 244       } else if (depth_rb != NULL) {
 245          attachments[i++] = __DRI_BUFFER_DEPTH;
 246          attachments[i++] = intel_bits_per_pixel(depth_rb);
 247       } else if (stencil_rb != NULL) {
 248          attachments[i++] = __DRI_BUFFER_STENCIL;
 249          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 250       }
 251
 252       buffers =
 253          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 254                                                       &drawable->w,
 255                                                       &drawable->h,
 256                                                       attachments, i / 2,
 257                                                       &count,
 258                                                       drawable->loaderPrivate);
 259    } else if (screen->dri2.loader) {
 260       i = 0;
 261       if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
 262          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 263       if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
 264          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 265       if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
 266          attachments[i++] = __DRI_BUFFER_DEPTH;
 267       if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
 268          attachments[i++] = __DRI_BUFFER_STENCIL;
 269
 270       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 271                                                    &drawable->w,
 272                                                    &drawable->h,
 273                                                    attachments, i,
 274                                                    &count,
 275                                                    drawable->loaderPrivate);
 276    }
 277
 278    if (buffers == NULL)
 279       return;
 280
 281    drawable->x = 0;
 282    drawable->y = 0;
 283    drawable->backX = 0;
 284    drawable->backY = 0;
 285    drawable->numClipRects = 1;
 286    drawable->pClipRects[0].x1 = 0;
 287    drawable->pClipRects[0].y1 = 0;
 288    drawable->pClipRects[0].x2 = drawable->w;
 289    drawable->pClipRects[0].y2 = drawable->h;
 290    drawable->numBackClipRects = 1;
 291    drawable->pBackClipRects[0].x1 = 0;
 292    drawable->pBackClipRects[0].y1 = 0;
 293    drawable->pBackClipRects[0].x2 = drawable->w;
 294    drawable->pBackClipRects[0].y2 = drawable->h;
 295
 296    depth_region = NULL;
 297    for (i = 0; i < count; i++) {
 298        switch (buffers[i].attachment) {
 299        case __DRI_BUFFER_FRONT_LEFT:
 300            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 301            region_name = "dri2 front buffer";
 302            break;
 303
 304        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 305            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 306            region_name = "dri2 fake front buffer";
 307            break;
 308
 309        case __DRI_BUFFER_BACK_LEFT:
 310            rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 311            region_name = "dri2 back buffer";
 312            break;
 313
 314        case __DRI_BUFFER_DEPTH:
 315            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 316            region_name = "dri2 depth buffer";
 317            break;
 318
 319        case __DRI_BUFFER_DEPTH_STENCIL:
 320            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 321            region_name = "dri2 depth / stencil buffer";
 322            break;
 323
 324        case __DRI_BUFFER_STENCIL:
 325            rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 326            region_name = "dri2 stencil buffer";
 327            break;
 328
 329        case __DRI_BUFFER_ACCUM:
 330        default:
 331            fprintf(stderr,
 332                    "unhandled buffer attach event, attacment type %d\n",
 333                    buffers[i].attachment);
 334            return;
 335        }
 336
 337        if (rb == NULL)
 338           continue;
 339
 340        if (rb->region && rb->region->name == buffers[i].name)
 341              continue;
 342
 343        if (INTEL_DEBUG & DEBUG_DRI)
 344           fprintf(stderr,
 345                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 346                   buffers[i].name, buffers[i].attachment,
 347                   buffers[i].cpp, buffers[i].pitch);
 348
 349        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 350           if (INTEL_DEBUG & DEBUG_DRI)
 351              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 352           intel_region_reference(&region, depth_region);
 353        }
 354        else
 355           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 356                                                  drawable->w,
 357                                                  drawable->h,
 358                                                  buffers[i].pitch / buffers[i].cpp,
 359                                                  buffers[i].name,
 360                                                  region_name);
 361
 362        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 363           depth_region = region;
 364
 365        intel_renderbuffer_set_region(rb, region);
 366        intel_region_release(&region);
 367
 368        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 369           rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 370           if (rb != NULL) {
 371              struct intel_region *stencil_region = NULL;
 372
 373              if (rb->region && rb->region->name == buffers[i].name)
 374                    continue;
 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_prepare_render(struct intel_context *intel)
 388 {
 389    __DRIcontext *driContext = intel->driContext;
 390    __DRIdrawable *drawable;
 391
 392    drawable = intel->driDrawable;
 393    if (drawable->dri2.stamp != driContext->dri2.draw_stamp) {
 394       if (drawable->lastStamp != drawable->dri2.stamp)
 395          intel_update_renderbuffers(driContext, drawable);
 396       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 397       driContext->dri2.draw_stamp = drawable->dri2.stamp;
 398    }
 399
 400    drawable = intel->driReadDrawable;
 401    if (drawable->dri2.stamp != driContext->dri2.read_stamp) {
 402       if (drawable->lastStamp != drawable->dri2.stamp)
 403          intel_update_renderbuffers(driContext, drawable);
 404       driContext->dri2.read_stamp = drawable->dri2.stamp;
 405    }
 406 }
 407
 408 void
 409 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 410 {
 411     struct intel_context *intel = intel_context(ctx);
 412     __DRIcontext *driContext = intel->driContext;
 413
 414     if (!intel->using_dri2_swapbuffers &&
 415         !intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 416        dri2InvalidateDrawable(driContext->driDrawablePriv);
 417        dri2InvalidateDrawable(driContext->driReadablePriv);
 418     }
 419 }
 420
 421 static const struct dri_debug_control debug_control[] = {
 422    { "tex",   DEBUG_TEXTURE},
 423    { "state", DEBUG_STATE},
 424    { "ioctl", DEBUG_IOCTL},
 425    { "blit",  DEBUG_BLIT},
 426    { "mip",   DEBUG_MIPTREE},
 427    { "fall",  DEBUG_FALLBACKS},
 428    { "verb",  DEBUG_VERBOSE},
 429    { "bat",   DEBUG_BATCH},
 430    { "pix",   DEBUG_PIXEL},
 431    { "buf",   DEBUG_BUFMGR},
 432    { "reg",   DEBUG_REGION},
 433    { "fbo",   DEBUG_FBO},
 434    { "lock",  DEBUG_LOCK},
 435    { "sync",  DEBUG_SYNC},
 436    { "prim",  DEBUG_PRIMS },
 437    { "vert",  DEBUG_VERTS },
 438    { "dri",   DEBUG_DRI },
 439    { "dma",   DEBUG_DMA },
 440    { "san",   DEBUG_SANITY },
 441    { "sleep", DEBUG_SLEEP },
 442    { "stats", DEBUG_STATS },
 443    { "tile",  DEBUG_TILE },
 444    { "sing",  DEBUG_SINGLE_THREAD },
 445    { "thre",  DEBUG_SINGLE_THREAD },
 446    { "wm",    DEBUG_WM },
 447    { "urb",   DEBUG_URB },
 448    { "vs",    DEBUG_VS },
 449    { NULL,    0 }
 450 };
 451
 452
 453 static void
 454 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 455 {
 456     struct intel_context *intel = intel_context(ctx);
 457
 458    _swrast_InvalidateState(ctx, new_state);
 459    _swsetup_InvalidateState(ctx, new_state);
 460    _vbo_InvalidateState(ctx, new_state);
 461    _tnl_InvalidateState(ctx, new_state);
 462    _tnl_invalidate_vertex_state(ctx, new_state);
 463
 464    intel->NewGLState |= new_state;
 465
 466    if (intel->vtbl.invalidate_state)
 467       intel->vtbl.invalidate_state( intel, new_state );
 468 }
 469
 470 void
 471 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 472 {
 473    struct intel_context *intel = intel_context(ctx);
 474
 475    if (intel->Fallback)
 476       _swrast_flush(ctx);
 477
 478    if (intel->gen < 4)
 479       INTEL_FIREVERTICES(intel);
 480
 481    if (intel->batch->map != intel->batch->ptr)
 482       intel_batchbuffer_flush(intel->batch);
 483
 484    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 485       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 486
 487       if (screen->dri2.loader &&
 488           (screen->dri2.loader->base.version >= 2)
 489           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 490           intel->driDrawable && intel->driDrawable->loaderPrivate) {
 491          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 492                                                   intel->driDrawable->loaderPrivate);
 493
 494          /* Only clear the dirty bit if front-buffer rendering is no longer
 495           * enabled.  This is done so that the dirty bit can only be set in
 496           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 497           * each of N places that do rendering.  This has worse performances,
 498           * but it is much easier to get correct.
 499           */
 500          if (!intel->is_front_buffer_rendering) {
 501             intel->front_buffer_dirty = GL_FALSE;
 502          }
 503       }
 504    }
 505 }
 506
 507 void
 508 intelFlush(GLcontext * ctx)
 509 {
 510    intel_flush(ctx, GL_FALSE);
 511 }
 512
 513 static void
 514 intel_glFlush(GLcontext *ctx)
 515 {
 516    struct intel_context *intel = intel_context(ctx);
 517
 518    intel_flush(ctx, GL_TRUE);
 519
 520    /* We're using glFlush as an indicator that a frame is done, which is
 521     * what DRI2 does before calling SwapBuffers (and means we should catch
 522     * people doing front-buffer rendering, as well)..
 523     *
 524     * Wait for the swapbuffers before the one we just emitted, so we don't
 525     * get too many swaps outstanding for apps that are GPU-heavy but not
 526     * CPU-heavy.
 527     *
 528     * Unfortunately, we don't have a handle to the batch containing the swap,
 529     * and getting our hands on that doesn't seem worth it, so we just us the
 530     * first batch we emitted after the last swap.
 531     */
 532    if (!intel->using_dri2_swapbuffers &&
 533        intel->first_post_swapbuffers_batch != NULL) {
 534       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 535       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 536       intel->first_post_swapbuffers_batch = NULL;
 537    }
 538 }
 539
 540 void
 541 intelFinish(GLcontext * ctx)
 542 {
 543    struct gl_framebuffer *fb = ctx->DrawBuffer;
 544    int i;
 545
 546    intelFlush(ctx);
 547
 548    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 549        struct intel_renderbuffer *irb;
 550
 551        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 552
 553        if (irb && irb->region)
 554           dri_bo_wait_rendering(irb->region->buffer);
 555    }
 556    if (fb->_DepthBuffer) {
 557       /* XXX: Wait on buffer idle */
 558    }
 559 }
 560
 561 void
 562 intelInitDriverFunctions(struct dd_function_table *functions)
 563 {
 564    _mesa_init_driver_functions(functions);
 565
 566    functions->Flush = intel_glFlush;
 567    functions->Finish = intelFinish;
 568    functions->GetString = intelGetString;
 569    functions->UpdateState = intelInvalidateState;
 570
 571    intelInitTextureFuncs(functions);
 572    intelInitTextureImageFuncs(functions);
 573    intelInitTextureSubImageFuncs(functions);
 574    intelInitTextureCopyImageFuncs(functions);
 575    intelInitStateFuncs(functions);
 576    intelInitClearFuncs(functions);
 577    intelInitBufferFuncs(functions);
 578    intelInitPixelFuncs(functions);
 579    intelInitBufferObjectFuncs(functions);
 580    intel_init_syncobj_functions(functions);
 581 }
 582
 583
 584 GLboolean
 585 intelInitContext(struct intel_context *intel,
 586                  const __GLcontextModes * mesaVis,
 587                  __DRIcontext * driContextPriv,
 588                  void *sharedContextPrivate,
 589                  struct dd_function_table *functions)
 590 {
 591    GLcontext *ctx = &intel->ctx;
 592    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 593    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 594    struct intel_screen *intelScreen = sPriv->private;
 595    int bo_reuse_mode;
 596
 597    /* we can't do anything without a connection to the device */
 598    if (intelScreen->bufmgr == NULL)
 599       return GL_FALSE;
 600
 601    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 602                                  functions, (void *) intel)) {
 603       printf("%s: failed to init mesa context\n", __FUNCTION__);
 604       return GL_FALSE;
 605    }
 606
 607    driContextPriv->driverPrivate = intel;
 608    intel->intelScreen = intelScreen;
 609    intel->driScreen = sPriv;
 610    intel->driContext = driContextPriv;
 611    intel->driFd = sPriv->fd;
 612
 613    if (IS_GEN6(intel->intelScreen->deviceID)) {
 614       intel->gen = 6;
 615       intel->needs_ff_sync = GL_TRUE;
 616       intel->has_luminance_srgb = GL_TRUE;
 617    } else if (IS_965(intel->intelScreen->deviceID)) {
 618       intel->gen = 4;
 619    } else if (IS_9XX(intel->intelScreen->deviceID)) {
 620       intel->gen = 3;
 621       if (IS_945(intel->intelScreen->deviceID)) {
 622          intel->is_945 = GL_TRUE;
 623       }
 624    } else {
 625       intel->gen = 2;
 626    }
 627
 628    if (IS_IGDNG(intel->intelScreen->deviceID)) {
 629       intel->is_ironlake = GL_TRUE;
 630       intel->needs_ff_sync = GL_TRUE;
 631       intel->has_luminance_srgb = GL_TRUE;
 632    } else if (IS_G4X(intel->intelScreen->deviceID)) {
 633       intel->has_luminance_srgb = GL_TRUE;
 634       intel->is_g4x = GL_TRUE;
 635    }
 636
 637    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 638                        intel->driScreen->myNum,
 639                        (intel->gen >= 4) ? "i965" : "i915");
 640    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 641       intel->maxBatchSize = 4096;
 642    else
 643       intel->maxBatchSize = BATCH_SZ;
 644
 645    intel->bufmgr = intelScreen->bufmgr;
 646
 647    bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 648    switch (bo_reuse_mode) {
 649    case DRI_CONF_BO_REUSE_DISABLED:
 650       break;
 651    case DRI_CONF_BO_REUSE_ALL:
 652       intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 653       break;
 654    }
 655
 656    /* This doesn't yet catch all non-conformant rendering, but it's a
 657     * start.
 658     */
 659    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 660       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 661       if (value > 0) {
 662          intel->conformance_mode = value;
 663       }
 664       else {
 665          intel->conformance_mode = 1;
 666       }
 667    }
 668
 669    if (intel->conformance_mode > 0) {
 670       ctx->Const.MinLineWidth = 1.0;
 671       ctx->Const.MinLineWidthAA = 1.0;
 672       ctx->Const.MaxLineWidth = 1.0;
 673       ctx->Const.MaxLineWidthAA = 1.0;
 674       ctx->Const.LineWidthGranularity = 1.0;
 675    }
 676    else {
 677       ctx->Const.MinLineWidth = 1.0;
 678       ctx->Const.MinLineWidthAA = 1.0;
 679       ctx->Const.MaxLineWidth = 5.0;
 680       ctx->Const.MaxLineWidthAA = 5.0;
 681       ctx->Const.LineWidthGranularity = 0.5;
 682    }
 683
 684    ctx->Const.MinPointSize = 1.0;
 685    ctx->Const.MinPointSizeAA = 1.0;
 686    ctx->Const.MaxPointSize = 255.0;
 687    ctx->Const.MaxPointSizeAA = 3.0;
 688    ctx->Const.PointSizeGranularity = 1.0;
 689
 690    /* reinitialize the context point state.
 691     * It depend on constants in __GLcontextRec::Const
 692     */
 693    _mesa_init_point(ctx);
 694
 695    meta_init_metaops(ctx, &intel->meta);
 696    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 697    if (intel->gen >= 4) {
 698       if (MAX_WIDTH > 8192)
 699          ctx->Const.MaxRenderbufferSize = 8192;
 700    } else {
 701       if (MAX_WIDTH > 2048)
 702          ctx->Const.MaxRenderbufferSize = 2048;
 703    }
 704
 705    /* Initialize the software rasterizer and helper modules. */
 706    _swrast_CreateContext(ctx);
 707    _vbo_CreateContext(ctx);
 708    _tnl_CreateContext(ctx);
 709    _swsetup_CreateContext(ctx);
 710
 711    /* Configure swrast to match hardware characteristics: */
 712    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 713    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 714
 715    _mesa_meta_init(ctx);
 716
 717    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 718    intel->hw_stipple = 1;
 719
 720    /* XXX FBO: this doesn't seem to be used anywhere */
 721    switch (mesaVis->depthBits) {
 722    case 0:                     /* what to do in this case? */
 723    case 16:
 724       intel->polygon_offset_scale = 1.0;
 725       break;
 726    case 24:
 727       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 728       break;
 729    default:
 730       assert(0);
 731       break;
 732    }
 733
 734    if (intel->gen >= 4)
 735       intel->polygon_offset_scale /= 0xffff;
 736
 737    intel->RenderIndex = ~0;
 738
 739    intelInitExtensions(ctx);
 740
 741    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 742    if (INTEL_DEBUG & DEBUG_BUFMGR)
 743       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 744
 745    intel->batch = intel_batchbuffer_alloc(intel);
 746
 747    intel_fbo_init(intel);
 748
 749    if (intel->ctx.Mesa_DXTn) {
 750       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 751       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 752    }
 753    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 754       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 755    }
 756    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 757                                                "texture_tiling");
 758    if (intel->use_texture_tiling &&
 759        !intel->intelScreen->kernel_exec_fencing) {
 760       fprintf(stderr, "No kernel support for execution fencing, "
 761               "disabling texture tiling\n");
 762       intel->use_texture_tiling = GL_FALSE;
 763    }
 764    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 765
 766    intel->prim.primitive = ~0;
 767
 768    /* Force all software fallbacks */
 769    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 770       fprintf(stderr, "disabling 3D rasterization\n");
 771       intel->no_rast = 1;
 772    }
 773
 774    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 775       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 776       intel->always_flush_batch = 1;
 777    }
 778
 779    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 780       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 781       intel->always_flush_cache = 1;
 782    }
 783
 784    /* Disable all hardware rendering (skip emitting batches and fences/waits
 785     * to the kernel)
 786     */
 787    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 788
 789    return GL_TRUE;
 790 }
 791
 792 void
 793 intelDestroyContext(__DRIcontext * driContextPriv)
 794 {
 795    struct intel_context *intel =
 796       (struct intel_context *) driContextPriv->driverPrivate;
 797
 798    assert(intel);               /* should never be null */
 799    if (intel) {
 800       GLboolean release_texture_heaps;
 801
 802       INTEL_FIREVERTICES(intel);
 803
 804       _mesa_meta_free(&intel->ctx);
 805
 806       meta_destroy_metaops(&intel->meta);
 807
 808       intel->vtbl.destroy(intel);
 809
 810       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 811       _swsetup_DestroyContext(&intel->ctx);
 812       _tnl_DestroyContext(&intel->ctx);
 813       _vbo_DestroyContext(&intel->ctx);
 814
 815       _swrast_DestroyContext(&intel->ctx);
 816       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 817
 818       intel_batchbuffer_free(intel->batch);
 819       intel->batch = NULL;
 820
 821       free(intel->prim.vb);
 822       intel->prim.vb = NULL;
 823       dri_bo_unreference(intel->prim.vb_bo);
 824       intel->prim.vb_bo = NULL;
 825       dri_bo_unreference(intel->first_post_swapbuffers_batch);
 826       intel->first_post_swapbuffers_batch = NULL;
 827
 828       if (release_texture_heaps) {
 829          /* Nothing is currently done here to free texture heaps;
 830           * but we're not using the texture heap utilities, so I
 831           * rather think we shouldn't.  I've taken a look, and can't
 832           * find any private texture data hanging around anywhere, but
 833           * I'm not yet certain there isn't any at all...
 834           */
 835          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 836             fprintf(stderr, "do something to free texture heaps\n");
 837           */
 838       }
 839
 840       driDestroyOptionCache(&intel->optionCache);
 841
 842       /* free the Mesa context */
 843       _mesa_free_context_data(&intel->ctx);
 844
 845       FREE(intel);
 846       driContextPriv->driverPrivate = NULL;
 847    }
 848 }
 849
 850 GLboolean
 851 intelUnbindContext(__DRIcontext * driContextPriv)
 852 {
 853    struct intel_context *intel =
 854       (struct intel_context *) driContextPriv->driverPrivate;
 855
 856    /* Deassociate the context with the drawables.
 857     */
 858    intel->driDrawable = NULL;
 859    intel->driReadDrawable = NULL;
 860
 861    return GL_TRUE;
 862 }
 863
 864 GLboolean
 865 intelMakeCurrent(__DRIcontext * driContextPriv,
 866                  __DRIdrawable * driDrawPriv,
 867                  __DRIdrawable * driReadPriv)
 868 {
 869    struct intel_context *intel;
 870    GET_CURRENT_CONTEXT(curCtx);
 871
 872    if (driContextPriv)
 873       intel = (struct intel_context *) driContextPriv->driverPrivate;
 874    else
 875       intel = NULL;
 876
 877    /* According to the glXMakeCurrent() man page: "Pending commands to
 878     * the previous context, if any, are flushed before it is released."
 879     * But only flush if we're actually changing contexts.
 880     */
 881    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 882       _mesa_flush(curCtx);
 883    }
 884
 885    if (driContextPriv) {
 886       struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 887       struct gl_framebuffer *readFb = driReadPriv->driverPrivate;
 888
 889       _mesa_make_current(&intel->ctx, fb, readFb);
 890       intel->driReadDrawable = driReadPriv;
 891       intel->driDrawable = driDrawPriv;
 892       driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
 893       driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
 894       intel_prepare_render(&intel->ctx);
 895    }
 896    else {
 897       _mesa_make_current(NULL, NULL, NULL);
 898    }
 899
 900    return GL_TRUE;
 901 }