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 #include "drivers/common/meta.h"
  42
  43 #include "i830_dri.h"
  44
  45 #include "intel_chipset.h"
  46 #include "intel_buffers.h"
  47 #include "intel_tex.h"
  48 #include "intel_batchbuffer.h"
  49 #include "intel_clear.h"
  50 #include "intel_extensions.h"
  51 #include "intel_pixel.h"
  52 #include "intel_regions.h"
  53 #include "intel_buffer_objects.h"
  54 #include "intel_fbo.h"
  55 #include "intel_decode.h"
  56 #include "intel_bufmgr.h"
  57 #include "intel_screen.h"
  58 #include "intel_swapbuffers.h"
  59
  60 #include "drirenderbuffer.h"
  61 #include "vblank.h"
  62 #include "utils.h"
  63 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  64
  65
  66 #ifndef INTEL_DEBUG
  67 int INTEL_DEBUG = (0);
  68 #endif
  69
  70
  71 #define DRIVER_DATE                     "20090712 2009Q2 RC3"
  72 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  73
  74
  75 static void intel_flush(GLcontext *ctx, GLboolean needs_mi_flush);
  76
  77 static const GLubyte *
  78 intelGetString(GLcontext * ctx, GLenum name)
  79 {
  80    const struct intel_context *const intel = intel_context(ctx);
  81    const char *chipset;
  82    static char buffer[128];
  83
  84    switch (name) {
  85    case GL_VENDOR:
  86       return (GLubyte *) "Tungsten Graphics, Inc";
  87       break;
  88
  89    case GL_RENDERER:
  90       switch (intel->intelScreen->deviceID) {
  91       case PCI_CHIP_845_G:
  92          chipset = "Intel(R) 845G";
  93          break;
  94       case PCI_CHIP_I830_M:
  95          chipset = "Intel(R) 830M";
  96          break;
  97       case PCI_CHIP_I855_GM:
  98          chipset = "Intel(R) 852GM/855GM";
  99          break;
 100       case PCI_CHIP_I865_G:
 101          chipset = "Intel(R) 865G";
 102          break;
 103       case PCI_CHIP_I915_G:
 104          chipset = "Intel(R) 915G";
 105          break;
 106       case PCI_CHIP_E7221_G:
 107          chipset = "Intel (R) E7221G (i915)";
 108          break;
 109       case PCI_CHIP_I915_GM:
 110          chipset = "Intel(R) 915GM";
 111          break;
 112       case PCI_CHIP_I945_G:
 113          chipset = "Intel(R) 945G";
 114          break;
 115       case PCI_CHIP_I945_GM:
 116          chipset = "Intel(R) 945GM";
 117          break;
 118       case PCI_CHIP_I945_GME:
 119          chipset = "Intel(R) 945GME";
 120          break;
 121       case PCI_CHIP_G33_G:
 122          chipset = "Intel(R) G33";
 123          break;
 124       case PCI_CHIP_Q35_G:
 125          chipset = "Intel(R) Q35";
 126          break;
 127       case PCI_CHIP_Q33_G:
 128          chipset = "Intel(R) Q33";
 129          break;
 130       case PCI_CHIP_IGD_GM:
 131       case PCI_CHIP_IGD_G:
 132          chipset = "Intel(R) IGD";
 133          break;
 134       case PCI_CHIP_I965_Q:
 135          chipset = "Intel(R) 965Q";
 136          break;
 137       case PCI_CHIP_I965_G:
 138       case PCI_CHIP_I965_G_1:
 139          chipset = "Intel(R) 965G";
 140          break;
 141       case PCI_CHIP_I946_GZ:
 142          chipset = "Intel(R) 946GZ";
 143          break;
 144       case PCI_CHIP_I965_GM:
 145          chipset = "Intel(R) 965GM";
 146          break;
 147       case PCI_CHIP_I965_GME:
 148          chipset = "Intel(R) 965GME/GLE";
 149          break;
 150       case PCI_CHIP_GM45_GM:
 151          chipset = "Mobile Intel® GM45 Express Chipset";
 152          break;
 153       case PCI_CHIP_IGD_E_G:
 154          chipset = "Intel(R) Integrated Graphics Device";
 155          break;
 156       case PCI_CHIP_G45_G:
 157          chipset = "Intel(R) G45/G43";
 158          break;
 159       case PCI_CHIP_Q45_G:
 160          chipset = "Intel(R) Q45/Q43";
 161          break;
 162       case PCI_CHIP_G41_G:
 163          chipset = "Intel(R) G41";
 164          break;
 165       case PCI_CHIP_B43_G:
 166          chipset = "Intel(R) B43";
 167          break;
 168       case PCI_CHIP_ILD_G:
 169          chipset = "Intel(R) IGDNG_D";
 170          break;
 171       case PCI_CHIP_ILM_G:
 172          chipset = "Intel(R) IGDNG_M";
 173          break;
 174       default:
 175          chipset = "Unknown Intel Chipset";
 176          break;
 177       }
 178
 179       (void) driGetRendererString(buffer, chipset,
 180                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 181                                   0);
 182       return (GLubyte *) buffer;
 183
 184    default:
 185       return NULL;
 186    }
 187 }
 188
 189 static unsigned
 190 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 191 {
 192    return _mesa_get_format_bytes(rb->Base.Format) * 8;
 193 }
 194
 195 void
 196 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 197 {
 198    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 199    struct intel_renderbuffer *rb;
 200    struct intel_region *region, *depth_region;
 201    struct intel_context *intel = context->driverPrivate;
 202    __DRIbuffer *buffers = NULL;
 203    __DRIscreen *screen;
 204    int i, count;
 205    unsigned int attachments[10];
 206    uint32_t name;
 207    const char *region_name;
 208
 209    if (INTEL_DEBUG & DEBUG_DRI)
 210       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 211
 212    screen = intel->intelScreen->driScrnPriv;
 213
 214    if (screen->dri2.loader
 215        && (screen->dri2.loader->base.version > 2)
 216        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 217       struct intel_renderbuffer *depth_rb;
 218       struct intel_renderbuffer *stencil_rb;
 219
 220       i = 0;
 221       if ((intel->is_front_buffer_rendering ||
 222            intel->is_front_buffer_reading ||
 223            !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->meta.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 (intel->gen < 4)
 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 (!intel->driScreen->dri2.enabled && 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           intel->driDrawable && intel->driDrawable->loaderPrivate) {
 500          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 501                                                   intel->driDrawable->loaderPrivate);
 502
 503          /* Only clear the dirty bit if front-buffer rendering is no longer
 504           * enabled.  This is done so that the dirty bit can only be set in
 505           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 506           * each of N places that do rendering.  This has worse performances,
 507           * but it is much easier to get correct.
 508           */
 509          if (!intel->is_front_buffer_rendering) {
 510             intel->front_buffer_dirty = GL_FALSE;
 511          }
 512       }
 513    }
 514 }
 515
 516 void
 517 intelFlush(GLcontext * ctx)
 518 {
 519    intel_flush(ctx, GL_FALSE);
 520 }
 521
 522 static void
 523 intel_glFlush(GLcontext *ctx)
 524 {
 525    struct intel_context *intel = intel_context(ctx);
 526
 527    intel_flush(ctx, GL_TRUE);
 528
 529    /* We're using glFlush as an indicator that a frame is done, which is
 530     * what DRI2 does before calling SwapBuffers (and means we should catch
 531     * people doing front-buffer rendering, as well)..
 532     *
 533     * Wait for the swapbuffers before the one we just emitted, so we don't
 534     * get too many swaps outstanding for apps that are GPU-heavy but not
 535     * CPU-heavy.
 536     *
 537     * Unfortunately, we don't have a handle to the batch containing the swap,
 538     * and getting our hands on that doesn't seem worth it, so we just us the
 539     * first batch we emitted after the last swap.
 540     */
 541    if (intel->first_post_swapbuffers_batch != NULL) {
 542       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 543       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 544       intel->first_post_swapbuffers_batch = NULL;
 545    }
 546 }
 547
 548 void
 549 intelFinish(GLcontext * ctx)
 550 {
 551    struct gl_framebuffer *fb = ctx->DrawBuffer;
 552    int i;
 553
 554    intelFlush(ctx);
 555
 556    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 557        struct intel_renderbuffer *irb;
 558
 559        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 560
 561        if (irb && irb->region)
 562           dri_bo_wait_rendering(irb->region->buffer);
 563    }
 564    if (fb->_DepthBuffer) {
 565       /* XXX: Wait on buffer idle */
 566    }
 567 }
 568
 569 void
 570 intelInitDriverFunctions(struct dd_function_table *functions)
 571 {
 572    _mesa_init_driver_functions(functions);
 573
 574    functions->Flush = intel_glFlush;
 575    functions->Finish = intelFinish;
 576    functions->GetString = intelGetString;
 577    functions->UpdateState = intelInvalidateState;
 578
 579    intelInitTextureFuncs(functions);
 580    intelInitTextureImageFuncs(functions);
 581    intelInitTextureSubImageFuncs(functions);
 582    intelInitTextureCopyImageFuncs(functions);
 583    intelInitStateFuncs(functions);
 584    intelInitClearFuncs(functions);
 585    intelInitBufferFuncs(functions);
 586    intelInitPixelFuncs(functions);
 587    intelInitBufferObjectFuncs(functions);
 588    intel_init_syncobj_functions(functions);
 589 }
 590
 591
 592 GLboolean
 593 intelInitContext(struct intel_context *intel,
 594                  const __GLcontextModes * mesaVis,
 595                  __DRIcontextPrivate * driContextPriv,
 596                  void *sharedContextPrivate,
 597                  struct dd_function_table *functions)
 598 {
 599    GLcontext *ctx = &intel->ctx;
 600    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 601    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 602    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 603    int fthrottle_mode;
 604
 605    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 606                                  functions, (void *) intel)) {
 607       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 608       return GL_FALSE;
 609    }
 610
 611    driContextPriv->driverPrivate = intel;
 612    intel->intelScreen = intelScreen;
 613    intel->driScreen = sPriv;
 614    intel->sarea = intelScreen->sarea;
 615    intel->driContext = driContextPriv;
 616
 617    if (IS_965(intel->intelScreen->deviceID))
 618       intel->gen = 4;
 619    else if (IS_9XX(intel->intelScreen->deviceID))
 620       intel->gen = 3;
 621    else
 622       intel->gen = 2;
 623
 624    /* Dri stuff */
 625    intel->hHWContext = driContextPriv->hHWContext;
 626    intel->driFd = sPriv->fd;
 627    intel->driHwLock = sPriv->lock;
 628
 629    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 630                        intel->driScreen->myNum,
 631                        (intel->gen >= 4) ? "i965" : "i915");
 632    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 633       intel->maxBatchSize = 4096;
 634    else
 635       intel->maxBatchSize = BATCH_SZ;
 636
 637    intel->bufmgr = intelScreen->bufmgr;
 638    intel->ttm = intelScreen->ttm;
 639    if (intel->ttm) {
 640       int bo_reuse_mode;
 641
 642       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 643       switch (bo_reuse_mode) {
 644       case DRI_CONF_BO_REUSE_DISABLED:
 645          break;
 646       case DRI_CONF_BO_REUSE_ALL:
 647          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 648          break;
 649       }
 650    }
 651
 652    /* This doesn't yet catch all non-conformant rendering, but it's a
 653     * start.
 654     */
 655    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 656       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 657       if (value > 0) {
 658          intel->conformance_mode = value;
 659       }
 660       else {
 661          intel->conformance_mode = 1;
 662       }
 663    }
 664
 665    if (intel->conformance_mode > 0) {
 666       ctx->Const.MinLineWidth = 1.0;
 667       ctx->Const.MinLineWidthAA = 1.0;
 668       ctx->Const.MaxLineWidth = 1.0;
 669       ctx->Const.MaxLineWidthAA = 1.0;
 670       ctx->Const.LineWidthGranularity = 1.0;
 671    }
 672    else {
 673       ctx->Const.MinLineWidth = 1.0;
 674       ctx->Const.MinLineWidthAA = 1.0;
 675       ctx->Const.MaxLineWidth = 5.0;
 676       ctx->Const.MaxLineWidthAA = 5.0;
 677       ctx->Const.LineWidthGranularity = 0.5;
 678    }
 679
 680    ctx->Const.MinPointSize = 1.0;
 681    ctx->Const.MinPointSizeAA = 1.0;
 682    ctx->Const.MaxPointSize = 255.0;
 683    ctx->Const.MaxPointSizeAA = 3.0;
 684    ctx->Const.PointSizeGranularity = 1.0;
 685
 686    /* reinitialize the context point state.
 687     * It depend on constants in __GLcontextRec::Const
 688     */
 689    _mesa_init_point(ctx);
 690
 691    meta_init_metaops(ctx, &intel->meta);
 692    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 693    if (intel->gen >= 4) {
 694       if (MAX_WIDTH > 8192)
 695          ctx->Const.MaxRenderbufferSize = 8192;
 696    } else {
 697       if (MAX_WIDTH > 2048)
 698          ctx->Const.MaxRenderbufferSize = 2048;
 699    }
 700
 701    /* Initialize the software rasterizer and helper modules. */
 702    _swrast_CreateContext(ctx);
 703    _vbo_CreateContext(ctx);
 704    _tnl_CreateContext(ctx);
 705    _swsetup_CreateContext(ctx);
 706
 707    /* Configure swrast to match hardware characteristics: */
 708    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 709    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 710
 711    _mesa_meta_init(ctx);
 712
 713    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 714    intel->hw_stipple = 1;
 715
 716    /* XXX FBO: this doesn't seem to be used anywhere */
 717    switch (mesaVis->depthBits) {
 718    case 0:                     /* what to do in this case? */
 719    case 16:
 720       intel->polygon_offset_scale = 1.0;
 721       break;
 722    case 24:
 723       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 724       break;
 725    default:
 726       assert(0);
 727       break;
 728    }
 729
 730    if (intel->gen >= 4)
 731       intel->polygon_offset_scale /= 0xffff;
 732
 733    intel->RenderIndex = ~0;
 734
 735    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 736    intel->irqsEmitted = 0;
 737
 738    intel->do_irqs = (intel->intelScreen->irq_active &&
 739                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 740
 741    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 742
 743    if (intel->gen >= 4 && !intel->intelScreen->irq_active) {
 744       _mesa_printf("IRQs not active.  Exiting\n");
 745       exit(1);
 746    }
 747
 748    intelInitExtensions(ctx);
 749
 750    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 751    if (INTEL_DEBUG & DEBUG_BUFMGR)
 752       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 753
 754    if (!sPriv->dri2.enabled)
 755       intel_recreate_static_regions(intel);
 756
 757    intel->batch = intel_batchbuffer_alloc(intel);
 758
 759    intel_fbo_init(intel);
 760
 761    if (intel->ctx.Mesa_DXTn) {
 762       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 763       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 764    }
 765    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 766       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 767    }
 768    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 769                                                "texture_tiling");
 770    if (intel->use_texture_tiling &&
 771        !intel->intelScreen->kernel_exec_fencing) {
 772       fprintf(stderr, "No kernel support for execution fencing, "
 773               "disabling texture tiling\n");
 774       intel->use_texture_tiling = GL_FALSE;
 775    }
 776    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 777
 778    intel->prim.primitive = ~0;
 779
 780    /* Force all software fallbacks */
 781    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 782       fprintf(stderr, "disabling 3D rasterization\n");
 783       intel->no_rast = 1;
 784    }
 785
 786    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 787       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 788       intel->always_flush_batch = 1;
 789    }
 790
 791    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 792       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 793       intel->always_flush_cache = 1;
 794    }
 795
 796    /* Disable all hardware rendering (skip emitting batches and fences/waits
 797     * to the kernel)
 798     */
 799    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 800
 801    return GL_TRUE;
 802 }
 803
 804 void
 805 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 806 {
 807    struct intel_context *intel =
 808       (struct intel_context *) driContextPriv->driverPrivate;
 809
 810    assert(intel);               /* should never be null */
 811    if (intel) {
 812       GLboolean release_texture_heaps;
 813
 814       INTEL_FIREVERTICES(intel);
 815
 816       _mesa_meta_free(&intel->ctx);
 817
 818       meta_destroy_metaops(&intel->meta);
 819
 820       intel->vtbl.destroy(intel);
 821
 822       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 823       _swsetup_DestroyContext(&intel->ctx);
 824       _tnl_DestroyContext(&intel->ctx);
 825       _vbo_DestroyContext(&intel->ctx);
 826
 827       _swrast_DestroyContext(&intel->ctx);
 828       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 829
 830       intel_batchbuffer_free(intel->batch);
 831       intel->batch = NULL;
 832
 833       free(intel->prim.vb);
 834       intel->prim.vb = NULL;
 835       dri_bo_unreference(intel->prim.vb_bo);
 836       intel->prim.vb_bo = NULL;
 837       dri_bo_unreference(intel->first_post_swapbuffers_batch);
 838       intel->first_post_swapbuffers_batch = NULL;
 839
 840       if (release_texture_heaps) {
 841          /* Nothing is currently done here to free texture heaps;
 842           * but we're not using the texture heap utilities, so I
 843           * rather think we shouldn't.  I've taken a look, and can't
 844           * find any private texture data hanging around anywhere, but
 845           * I'm not yet certain there isn't any at all...
 846           */
 847          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 848             fprintf(stderr, "do something to free texture heaps\n");
 849           */
 850       }
 851
 852       /* XXX In intelMakeCurrent() below, the context's static regions are
 853        * referenced inside the frame buffer; it's listed as a hack,
 854        * with a comment of "XXX FBO temporary fix-ups!", but
 855        * as long as it's there, we should release the regions here.
 856        * The do/while loop around the block is used to allow the
 857        * "continue" statements inside the block to exit the block,
 858        * to avoid many layers of "if" constructs.
 859        */
 860       do {
 861          __DRIdrawablePrivate * driDrawPriv = intel->driDrawable;
 862          struct intel_framebuffer *intel_fb;
 863          struct intel_renderbuffer *irbDepth, *irbStencil;
 864          if (!driDrawPriv) {
 865             /* We're already detached from the drawable; exit this block. */
 866             continue;
 867          }
 868          intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 869          if (!intel_fb) {
 870             /* The frame buffer is already gone; exit this block. */
 871             continue;
 872          }
 873          irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 874          irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 875
 876          /* If the regions of the frame buffer still match the regions
 877           * of the context, release them.  If they've changed somehow,
 878           * leave them alone.
 879           */
 880          if (intel_fb->color_rb[0] && intel_fb->color_rb[0]->region == intel->front_region) {
 881             intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 882          }
 883          if (intel_fb->color_rb[1] && intel_fb->color_rb[1]->region == intel->back_region) {
 884             intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 885          }
 886
 887          if (irbDepth && irbDepth->region == intel->depth_region) {
 888             intel_renderbuffer_set_region(irbDepth, NULL);
 889          }
 890          /* Usually, the stencil buffer is the same as the depth buffer;
 891           * but they're handled separately in MakeCurrent, so we'll
 892           * handle them separately here.
 893           */
 894          if (irbStencil && irbStencil->region == intel->depth_region) {
 895             intel_renderbuffer_set_region(irbStencil, NULL);
 896          }
 897       } while (0);
 898
 899       intel_region_release(&intel->front_region);
 900       intel_region_release(&intel->back_region);
 901       intel_region_release(&intel->depth_region);
 902
 903       driDestroyOptionCache(&intel->optionCache);
 904
 905       /* free the Mesa context */
 906       _mesa_free_context_data(&intel->ctx);
 907
 908       FREE(intel);
 909       driContextPriv->driverPrivate = NULL;
 910    }
 911 }
 912
 913 GLboolean
 914 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 915 {
 916    struct intel_context *intel =
 917       (struct intel_context *) driContextPriv->driverPrivate;
 918
 919    /* Deassociate the context with the drawables.
 920     */
 921    intel->driDrawable = NULL;
 922    intel->driReadDrawable = NULL;
 923
 924    return GL_TRUE;
 925 }
 926
 927 GLboolean
 928 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 929                  __DRIdrawablePrivate * driDrawPriv,
 930                  __DRIdrawablePrivate * driReadPriv)
 931 {
 932    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 933    struct intel_context *intel;
 934    GET_CURRENT_CONTEXT(curCtx);
 935
 936    if (driContextPriv)
 937       intel = (struct intel_context *) driContextPriv->driverPrivate;
 938    else
 939       intel = NULL;
 940
 941    /* According to the glXMakeCurrent() man page: "Pending commands to
 942     * the previous context, if any, are flushed before it is released."
 943     * But only flush if we're actually changing contexts.
 944     */
 945    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 946       _mesa_flush(curCtx);
 947    }
 948
 949    if (driContextPriv) {
 950       struct intel_framebuffer *intel_fb =
 951          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 952       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 953
 954       if (driContextPriv->driScreenPriv->dri2.enabled) {
 955           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 956           if (driDrawPriv != driReadPriv)
 957               intel_update_renderbuffers(driContextPriv, driReadPriv);
 958       } else {
 959           /* XXX FBO temporary fix-ups!  These are released in
 960            * intelDextroyContext(), above.  Changes here should be
 961            * reflected there.
 962            */
 963           /* if the renderbuffers don't have regions, init them from the context */
 964          struct intel_renderbuffer *irbDepth
 965             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 966          struct intel_renderbuffer *irbStencil
 967             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 968
 969          if (intel_fb->color_rb[0]) {
 970             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 971                                           intel->front_region);
 972          }
 973          if (intel_fb->color_rb[1]) {
 974             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 975                                           intel->back_region);
 976          }
 977
 978          if (irbDepth) {
 979             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 980          }
 981          if (irbStencil) {
 982             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 983          }
 984       }
 985
 986       /* set GLframebuffer size to match window, if needed */
 987       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 988
 989       if (driReadPriv != driDrawPriv) {
 990          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 991       }
 992
 993       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 994
 995       intel->driReadDrawable = driReadPriv;
 996
 997       if (intel->driDrawable != driDrawPriv) {
 998          if (driDrawPriv->swap_interval == (unsigned)-1) {
 999             int i;
1000
1001             driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
1002                ? driGetDefaultVBlankFlags(&intel->optionCache)
1003                : VBLANK_FLAG_NO_IRQ;
1004
1005             /* Prevent error printf if one crtc is disabled, this will
1006              * be properly calculated in intelWindowMoved() next.
1007              */
1008             driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
1009
1010             (*psp->systemTime->getUST) (&intel_fb->swap_ust);
1011             driDrawableInitVBlank(driDrawPriv);
1012             intel_fb->vbl_waited = driDrawPriv->vblSeq;
1013
1014             for (i = 0; i < 2; i++) {
1015                if (intel_fb->color_rb[i])
1016                   intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
1017             }
1018          }
1019          intel->driDrawable = driDrawPriv;
1020          intelWindowMoved(intel);
1021       }
1022
1023       intel_draw_buffer(&intel->ctx, &intel_fb->Base);
1024    }
1025    else {
1026       _mesa_make_current(NULL, NULL, NULL);
1027    }
1028
1029    return GL_TRUE;
1030 }
1031
1032 static void
1033 intelContendedLock(struct intel_context *intel, GLuint flags)
1034 {
1035    __DRIdrawablePrivate *dPriv = intel->driDrawable;
1036    __DRIscreenPrivate *sPriv = intel->driScreen;
1037    volatile drm_i915_sarea_t *sarea = intel->sarea;
1038    int me = intel->hHWContext;
1039
1040    drmGetLock(intel->driFd, intel->hHWContext, flags);
1041
1042    if (INTEL_DEBUG & DEBUG_LOCK)
1043       _mesa_printf("%s - got contended lock\n", __progname);
1044
1045    /* If the window moved, may need to set a new cliprect now.
1046     *
1047     * NOTE: This releases and regains the hw lock, so all state
1048     * checking must be done *after* this call:
1049     */
1050    if (dPriv)
1051        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1052
1053    if (sarea && sarea->ctxOwner != me) {
1054       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1055          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1056                  sarea->ctxOwner, me);
1057       }
1058       sarea->ctxOwner = me;
1059    }
1060
1061    /* If the last consumer of the texture memory wasn't us, notify the fake
1062     * bufmgr and record the new owner.  We should have the memory shared
1063     * between contexts of a single fake bufmgr, but this will at least make
1064     * things correct for now.
1065     */
1066    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1067       sarea->texAge = intel->hHWContext;
1068       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1069       if (INTEL_DEBUG & DEBUG_BATCH)
1070          intel_decode_context_reset();
1071       if (INTEL_DEBUG & DEBUG_BUFMGR)
1072          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1073                  sarea->ctxOwner, intel->hHWContext);
1074    }
1075
1076    /* Drawable changed?
1077     */
1078    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1079        intelWindowMoved(intel);
1080        intel->lastStamp = dPriv->lastStamp;
1081    }
1082 }
1083
1084
1085 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1086
1087 /* Lock the hardware and validate our state.
1088  */
1089 void LOCK_HARDWARE( struct intel_context *intel )
1090 {
1091     __DRIdrawable *dPriv = intel->driDrawable;
1092     __DRIscreen *sPriv = intel->driScreen;
1093     char __ret = 0;
1094     struct intel_framebuffer *intel_fb = NULL;
1095     struct intel_renderbuffer *intel_rb = NULL;
1096
1097     intel->locked++;
1098     if (intel->locked >= 2)
1099        return;
1100
1101     if (!sPriv->dri2.enabled)
1102        _glthread_LOCK_MUTEX(lockMutex);
1103
1104     if (intel->driDrawable) {
1105        intel_fb = intel->driDrawable->driverPrivate;
1106
1107        if (intel_fb)
1108           intel_rb =
1109              intel_get_renderbuffer(&intel_fb->Base,
1110                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1111     }
1112
1113     if (intel_rb && dPriv->vblFlags &&
1114         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1115         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1116         drmVBlank vbl;
1117
1118         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1119
1120         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1121             vbl.request.type |= DRM_VBLANK_SECONDARY;
1122         }
1123
1124         vbl.request.sequence = intel_rb->vbl_pending;
1125         drmWaitVBlank(intel->driFd, &vbl);
1126         intel_fb->vbl_waited = vbl.reply.sequence;
1127     }
1128
1129     if (!sPriv->dri2.enabled) {
1130         DRM_CAS(intel->driHwLock, intel->hHWContext,
1131                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1132
1133         if (__ret)
1134             intelContendedLock( intel, 0 );
1135     }
1136
1137
1138     if (INTEL_DEBUG & DEBUG_LOCK)
1139       _mesa_printf("%s - locked\n", __progname);
1140 }
1141
1142
1143 /* Unlock the hardware using the global current context
1144  */
1145 void UNLOCK_HARDWARE( struct intel_context *intel )
1146 {
1147     __DRIscreen *sPriv = intel->driScreen;
1148
1149    intel->locked--;
1150    if (intel->locked > 0)
1151       return;
1152
1153    assert(intel->locked == 0);
1154
1155    if (!sPriv->dri2.enabled) {
1156       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1157       _glthread_UNLOCK_MUTEX(lockMutex);
1158    }
1159
1160    if (INTEL_DEBUG & DEBUG_LOCK)
1161       _mesa_printf("%s - unlocked\n", __progname);
1162
1163    /**
1164     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1165     * cliprects.
1166     */
1167    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1168       intel_batchbuffer_flush(intel->batch);
1169 }
1170