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                     "20090712 2009Q2 RC3"
  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       case PCI_CHIP_B43_G:
 165          chipset = "Intel(R) B43";
 166          break;
 167       case PCI_CHIP_ILD_G:
 168          chipset = "Intel(R) IGDNG_D";
 169          break;
 170       case PCI_CHIP_ILM_G:
 171          chipset = "Intel(R) IGDNG_M";
 172          break;
 173       default:
 174          chipset = "Unknown Intel Chipset";
 175          break;
 176       }
 177
 178       (void) driGetRendererString(buffer, chipset,
 179                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 180                                   0);
 181       return (GLubyte *) buffer;
 182
 183    default:
 184       return NULL;
 185    }
 186 }
 187
 188 static unsigned
 189 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 190 {
 191    switch (rb->Base._ActualFormat) {
 192    case GL_RGB5:
 193    case GL_DEPTH_COMPONENT16:
 194       return 16;
 195    case GL_RGB8:
 196    case GL_RGBA8:
 197    case GL_DEPTH_COMPONENT24:
 198    case GL_DEPTH24_STENCIL8_EXT:
 199    case GL_STENCIL_INDEX8_EXT:
 200       return 32;
 201    default:
 202       return 0;
 203    }
 204 }
 205
 206 void
 207 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 208 {
 209    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 210    struct intel_renderbuffer *rb;
 211    struct intel_region *region, *depth_region;
 212    struct intel_context *intel = context->driverPrivate;
 213    __DRIbuffer *buffers = NULL;
 214    __DRIscreen *screen;
 215    int i, count;
 216    unsigned int attachments[10];
 217    uint32_t name;
 218    const char *region_name;
 219
 220    if (INTEL_DEBUG & DEBUG_DRI)
 221       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 222
 223    screen = intel->intelScreen->driScrnPriv;
 224
 225    if (screen->dri2.loader
 226        && (screen->dri2.loader->base.version > 2)
 227        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 228       struct intel_renderbuffer *depth_rb;
 229       struct intel_renderbuffer *stencil_rb;
 230
 231       i = 0;
 232       if ((intel->is_front_buffer_rendering ||
 233            intel->is_front_buffer_reading ||
 234            !intel_fb->color_rb[1])
 235            && intel_fb->color_rb[0]) {
 236          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 237          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 238       }
 239
 240       if (intel_fb->color_rb[1]) {
 241          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 242          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 243       }
 244
 245       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 246       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 247
 248       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 249          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 250          attachments[i++] = intel_bits_per_pixel(depth_rb);
 251       } else if (depth_rb != NULL) {
 252          attachments[i++] = __DRI_BUFFER_DEPTH;
 253          attachments[i++] = intel_bits_per_pixel(depth_rb);
 254       } else if (stencil_rb != NULL) {
 255          attachments[i++] = __DRI_BUFFER_STENCIL;
 256          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 257       }
 258
 259       buffers =
 260          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 261                                                       &drawable->w,
 262                                                       &drawable->h,
 263                                                       attachments, i / 2,
 264                                                       &count,
 265                                                       drawable->loaderPrivate);
 266    } else if (screen->dri2.loader) {
 267       i = 0;
 268       if (intel_fb->color_rb[0])
 269          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 270       if (intel_fb->color_rb[1])
 271          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 272       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 273          attachments[i++] = __DRI_BUFFER_DEPTH;
 274       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 275          attachments[i++] = __DRI_BUFFER_STENCIL;
 276
 277       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 278                                                    &drawable->w,
 279                                                    &drawable->h,
 280                                                    attachments, i,
 281                                                    &count,
 282                                                    drawable->loaderPrivate);
 283    }
 284
 285    if (buffers == NULL)
 286       return;
 287
 288    drawable->x = 0;
 289    drawable->y = 0;
 290    drawable->backX = 0;
 291    drawable->backY = 0;
 292    drawable->numClipRects = 1;
 293    drawable->pClipRects[0].x1 = 0;
 294    drawable->pClipRects[0].y1 = 0;
 295    drawable->pClipRects[0].x2 = drawable->w;
 296    drawable->pClipRects[0].y2 = drawable->h;
 297    drawable->numBackClipRects = 1;
 298    drawable->pBackClipRects[0].x1 = 0;
 299    drawable->pBackClipRects[0].y1 = 0;
 300    drawable->pBackClipRects[0].x2 = drawable->w;
 301    drawable->pBackClipRects[0].y2 = drawable->h;
 302
 303    depth_region = NULL;
 304    for (i = 0; i < count; i++) {
 305        switch (buffers[i].attachment) {
 306        case __DRI_BUFFER_FRONT_LEFT:
 307            rb = intel_fb->color_rb[0];
 308            region_name = "dri2 front buffer";
 309            break;
 310
 311        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 312            rb = intel_fb->color_rb[0];
 313            region_name = "dri2 fake front buffer";
 314            break;
 315
 316        case __DRI_BUFFER_BACK_LEFT:
 317            rb = intel_fb->color_rb[1];
 318            region_name = "dri2 back buffer";
 319            break;
 320
 321        case __DRI_BUFFER_DEPTH:
 322            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 323            region_name = "dri2 depth buffer";
 324            break;
 325
 326        case __DRI_BUFFER_DEPTH_STENCIL:
 327            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 328            region_name = "dri2 depth / stencil buffer";
 329            break;
 330
 331        case __DRI_BUFFER_STENCIL:
 332            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 333            region_name = "dri2 stencil buffer";
 334            break;
 335
 336        case __DRI_BUFFER_ACCUM:
 337        default:
 338            fprintf(stderr,
 339                    "unhandled buffer attach event, attacment type %d\n",
 340                    buffers[i].attachment);
 341            return;
 342        }
 343
 344        if (rb == NULL)
 345           continue;
 346
 347        if (rb->region) {
 348           dri_bo_flink(rb->region->buffer, &name);
 349           if (name == buffers[i].name)
 350              continue;
 351        }
 352
 353        if (INTEL_DEBUG & DEBUG_DRI)
 354           fprintf(stderr,
 355                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 356                   buffers[i].name, buffers[i].attachment,
 357                   buffers[i].cpp, buffers[i].pitch);
 358
 359        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 360           if (INTEL_DEBUG & DEBUG_DRI)
 361              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 362           intel_region_reference(&region, depth_region);
 363        }
 364        else
 365           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 366                                                  drawable->w,
 367                                                  drawable->h,
 368                                                  buffers[i].pitch / buffers[i].cpp,
 369                                                  buffers[i].name,
 370                                                  region_name);
 371
 372        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 373           depth_region = region;
 374
 375        intel_renderbuffer_set_region(rb, region);
 376        intel_region_release(&region);
 377
 378        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 379           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 380           if (rb != NULL) {
 381              struct intel_region *stencil_region = NULL;
 382
 383              if (rb->region) {
 384                 dri_bo_flink(rb->region->buffer, &name);
 385                 if (name == buffers[i].name)
 386                    continue;
 387              }
 388
 389              intel_region_reference(&stencil_region, region);
 390              intel_renderbuffer_set_region(rb, stencil_region);
 391              intel_region_release(&stencil_region);
 392           }
 393        }
 394    }
 395
 396    driUpdateFramebufferSize(&intel->ctx, drawable);
 397 }
 398
 399 void
 400 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 401 {
 402     struct intel_context *intel = intel_context(ctx);
 403     __DRIcontext *driContext = intel->driContext;
 404     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 405                          GLsizei w, GLsizei h);
 406
 407     if (!driContext->driScreenPriv->dri2.enabled)
 408         return;
 409
 410     if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 411        /* If we're rendering to the fake front buffer, make sure all the pending
 412         * drawing has landed on the real front buffer.  Otherwise when we
 413         * eventually get to DRI2GetBuffersWithFormat the stale real front
 414         * buffer contents will get copied to the new fake front buffer.
 415         */
 416        if (intel->is_front_buffer_rendering) {
 417           intel_flush(ctx, GL_FALSE);
 418        }
 419
 420        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 421        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 422           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 423     }
 424
 425     old_viewport = ctx->Driver.Viewport;
 426     ctx->Driver.Viewport = NULL;
 427     intel->driDrawable = driContext->driDrawablePriv;
 428     intelWindowMoved(intel);
 429     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 430     ctx->Driver.Viewport = old_viewport;
 431 }
 432
 433
 434 static const struct dri_debug_control debug_control[] = {
 435    { "tex",   DEBUG_TEXTURE},
 436    { "state", DEBUG_STATE},
 437    { "ioctl", DEBUG_IOCTL},
 438    { "blit",  DEBUG_BLIT},
 439    { "mip",   DEBUG_MIPTREE},
 440    { "fall",  DEBUG_FALLBACKS},
 441    { "verb",  DEBUG_VERBOSE},
 442    { "bat",   DEBUG_BATCH},
 443    { "pix",   DEBUG_PIXEL},
 444    { "buf",   DEBUG_BUFMGR},
 445    { "reg",   DEBUG_REGION},
 446    { "fbo",   DEBUG_FBO},
 447    { "lock",  DEBUG_LOCK},
 448    { "sync",  DEBUG_SYNC},
 449    { "prim",  DEBUG_PRIMS },
 450    { "vert",  DEBUG_VERTS },
 451    { "dri",   DEBUG_DRI },
 452    { "dma",   DEBUG_DMA },
 453    { "san",   DEBUG_SANITY },
 454    { "sleep", DEBUG_SLEEP },
 455    { "stats", DEBUG_STATS },
 456    { "tile",  DEBUG_TILE },
 457    { "sing",  DEBUG_SINGLE_THREAD },
 458    { "thre",  DEBUG_SINGLE_THREAD },
 459    { "wm",    DEBUG_WM },
 460    { "urb",   DEBUG_URB },
 461    { "vs",    DEBUG_VS },
 462    { NULL,    0 }
 463 };
 464
 465
 466 static void
 467 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 468 {
 469     struct intel_context *intel = intel_context(ctx);
 470
 471    _swrast_InvalidateState(ctx, new_state);
 472    _swsetup_InvalidateState(ctx, new_state);
 473    _vbo_InvalidateState(ctx, new_state);
 474    _tnl_InvalidateState(ctx, new_state);
 475    _tnl_invalidate_vertex_state(ctx, new_state);
 476
 477    intel->NewGLState |= new_state;
 478
 479    if (intel->vtbl.invalidate_state)
 480       intel->vtbl.invalidate_state( intel, new_state );
 481 }
 482
 483 static void
 484 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 485 {
 486    struct intel_context *intel = intel_context(ctx);
 487
 488    if (intel->Fallback)
 489       _swrast_flush(ctx);
 490
 491    if (!IS_965(intel->intelScreen->deviceID))
 492       INTEL_FIREVERTICES(intel);
 493
 494    /* Emit a flush so that any frontbuffer rendering that might have occurred
 495     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 496     * a flush for us.
 497     */
 498    if (needs_mi_flush)
 499       intel_batchbuffer_emit_mi_flush(intel->batch);
 500
 501    if (intel->batch->map != intel->batch->ptr)
 502       intel_batchbuffer_flush(intel->batch);
 503
 504    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 505       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 506
 507       if (screen->dri2.loader &&
 508           (screen->dri2.loader->base.version >= 2)
 509           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 510          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 511                                                   intel->driDrawable->loaderPrivate);
 512
 513          /* Only clear the dirty bit if front-buffer rendering is no longer
 514           * enabled.  This is done so that the dirty bit can only be set in
 515           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 516           * each of N places that do rendering.  This has worse performances,
 517           * but it is much easier to get correct.
 518           */
 519          if (!intel->is_front_buffer_rendering) {
 520             intel->front_buffer_dirty = GL_FALSE;
 521          }
 522       }
 523    }
 524 }
 525
 526 void
 527 intelFlush(GLcontext * ctx)
 528 {
 529    intel_flush(ctx, GL_FALSE);
 530 }
 531
 532 static void
 533 intel_glFlush(GLcontext *ctx)
 534 {
 535    struct intel_context *intel = intel_context(ctx);
 536
 537    intel_flush(ctx, GL_TRUE);
 538
 539    /* We're using glFlush as an indicator that a frame is done, which is
 540     * what DRI2 does before calling SwapBuffers (and means we should catch
 541     * people doing front-buffer rendering, as well)..
 542     *
 543     * Wait for the swapbuffers before the one we just emitted, so we don't
 544     * get too many swaps outstanding for apps that are GPU-heavy but not
 545     * CPU-heavy.
 546     *
 547     * Unfortunately, we don't have a handle to the batch containing the swap,
 548     * and getting our hands on that doesn't seem worth it, so we just us the
 549     * first batch we emitted after the last swap.
 550     */
 551    if (intel->first_post_swapbuffers_batch != NULL) {
 552       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 553       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 554       intel->first_post_swapbuffers_batch = NULL;
 555    }
 556 }
 557
 558 void
 559 intelFinish(GLcontext * ctx)
 560 {
 561    struct gl_framebuffer *fb = ctx->DrawBuffer;
 562    int i;
 563
 564    intelFlush(ctx);
 565
 566    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 567        struct intel_renderbuffer *irb;
 568
 569        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 570
 571        if (irb && irb->region)
 572           dri_bo_wait_rendering(irb->region->buffer);
 573    }
 574    if (fb->_DepthBuffer) {
 575       /* XXX: Wait on buffer idle */
 576    }
 577 }
 578
 579 void
 580 intelInitDriverFunctions(struct dd_function_table *functions)
 581 {
 582    _mesa_init_driver_functions(functions);
 583
 584    functions->Flush = intel_glFlush;
 585    functions->Finish = intelFinish;
 586    functions->GetString = intelGetString;
 587    functions->UpdateState = intelInvalidateState;
 588
 589    intelInitTextureFuncs(functions);
 590    intelInitTextureImageFuncs(functions);
 591    intelInitTextureSubImageFuncs(functions);
 592    intelInitTextureCopyImageFuncs(functions);
 593    intelInitStateFuncs(functions);
 594    intelInitClearFuncs(functions);
 595    intelInitBufferFuncs(functions);
 596    intelInitPixelFuncs(functions);
 597    intelInitBufferObjectFuncs(functions);
 598    intel_init_syncobj_functions(functions);
 599 }
 600
 601
 602 GLboolean
 603 intelInitContext(struct intel_context *intel,
 604                  const __GLcontextModes * mesaVis,
 605                  __DRIcontextPrivate * driContextPriv,
 606                  void *sharedContextPrivate,
 607                  struct dd_function_table *functions)
 608 {
 609    GLcontext *ctx = &intel->ctx;
 610    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 611    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 612    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 613    int fthrottle_mode;
 614
 615    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 616                                  functions, (void *) intel)) {
 617       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 618       return GL_FALSE;
 619    }
 620
 621    driContextPriv->driverPrivate = intel;
 622    intel->intelScreen = intelScreen;
 623    intel->driScreen = sPriv;
 624    intel->sarea = intelScreen->sarea;
 625    intel->driContext = driContextPriv;
 626
 627    /* Dri stuff */
 628    intel->hHWContext = driContextPriv->hHWContext;
 629    intel->driFd = sPriv->fd;
 630    intel->driHwLock = sPriv->lock;
 631
 632    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 633                        intel->driScreen->myNum,
 634                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 635    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 636       intel->maxBatchSize = 4096;
 637    else
 638       intel->maxBatchSize = BATCH_SZ;
 639
 640    intel->bufmgr = intelScreen->bufmgr;
 641    intel->ttm = intelScreen->ttm;
 642    if (intel->ttm) {
 643       int bo_reuse_mode;
 644
 645       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 646       switch (bo_reuse_mode) {
 647       case DRI_CONF_BO_REUSE_DISABLED:
 648          break;
 649       case DRI_CONF_BO_REUSE_ALL:
 650          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 651          break;
 652       }
 653    }
 654
 655    /* This doesn't yet catch all non-conformant rendering, but it's a
 656     * start.
 657     */
 658    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 659       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 660       if (value > 0) {
 661          intel->conformance_mode = value;
 662       }
 663       else {
 664          intel->conformance_mode = 1;
 665       }
 666    }
 667
 668    if (intel->conformance_mode > 0) {
 669       ctx->Const.MinLineWidth = 1.0;
 670       ctx->Const.MinLineWidthAA = 1.0;
 671       ctx->Const.MaxLineWidth = 1.0;
 672       ctx->Const.MaxLineWidthAA = 1.0;
 673       ctx->Const.LineWidthGranularity = 1.0;
 674    }
 675    else {
 676       ctx->Const.MinLineWidth = 1.0;
 677       ctx->Const.MinLineWidthAA = 1.0;
 678       ctx->Const.MaxLineWidth = 5.0;
 679       ctx->Const.MaxLineWidthAA = 5.0;
 680       ctx->Const.LineWidthGranularity = 0.5;
 681    }
 682
 683    ctx->Const.MinPointSize = 1.0;
 684    ctx->Const.MinPointSizeAA = 1.0;
 685    ctx->Const.MaxPointSize = 255.0;
 686    ctx->Const.MaxPointSizeAA = 3.0;
 687    ctx->Const.PointSizeGranularity = 1.0;
 688
 689    /* reinitialize the context point state.
 690     * It depend on constants in __GLcontextRec::Const
 691     */
 692    _mesa_init_point(ctx);
 693
 694    meta_init_metaops(ctx, &intel->meta);
 695    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 696    if (IS_965(intelScreen->deviceID)) {
 697       if (MAX_WIDTH > 8192)
 698          ctx->Const.MaxRenderbufferSize = 8192;
 699    } else {
 700       if (MAX_WIDTH > 2048)
 701          ctx->Const.MaxRenderbufferSize = 2048;
 702    }
 703
 704    /* Initialize the software rasterizer and helper modules. */
 705    _swrast_CreateContext(ctx);
 706    _vbo_CreateContext(ctx);
 707    _tnl_CreateContext(ctx);
 708    _swsetup_CreateContext(ctx);
 709
 710    /* Configure swrast to match hardware characteristics: */
 711    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 712    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 713
 714    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 715    intel->hw_stipple = 1;
 716
 717    /* XXX FBO: this doesn't seem to be used anywhere */
 718    switch (mesaVis->depthBits) {
 719    case 0:                     /* what to do in this case? */
 720    case 16:
 721       intel->polygon_offset_scale = 1.0;
 722       break;
 723    case 24:
 724       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 725       break;
 726    default:
 727       assert(0);
 728       break;
 729    }
 730
 731    if (IS_965(intelScreen->deviceID))
 732       intel->polygon_offset_scale /= 0xffff;
 733
 734    intel->RenderIndex = ~0;
 735
 736    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 737    intel->irqsEmitted = 0;
 738
 739    intel->do_irqs = (intel->intelScreen->irq_active &&
 740                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 741
 742    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 743
 744    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 745       _mesa_printf("IRQs not active.  Exiting\n");
 746       exit(1);
 747    }
 748
 749    intelInitExtensions(ctx, GL_FALSE);
 750
 751    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 752    if (INTEL_DEBUG & DEBUG_BUFMGR)
 753       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 754
 755    if (!sPriv->dri2.enabled)
 756       intel_recreate_static_regions(intel);
 757
 758    intel->batch = intel_batchbuffer_alloc(intel);
 759
 760    intel_fbo_init(intel);
 761
 762    if (intel->ctx.Mesa_DXTn) {
 763       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 764       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 765    }
 766    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 767       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 768    }
 769    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 770                                                "texture_tiling");
 771    if (intel->use_texture_tiling &&
 772        !intel->intelScreen->kernel_exec_fencing) {
 773       fprintf(stderr, "No kernel support for execution fencing, "
 774               "disabling texture tiling\n");
 775       intel->use_texture_tiling = GL_FALSE;
 776    }
 777    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 778
 779    intel->prim.primitive = ~0;
 780
 781    /* Force all software fallbacks */
 782    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 783       fprintf(stderr, "disabling 3D rasterization\n");
 784       intel->no_rast = 1;
 785    }
 786
 787    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 788       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 789       intel->always_flush_batch = 1;
 790    }
 791
 792    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 793       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 794       intel->always_flush_cache = 1;
 795    }
 796
 797    /* Disable all hardware rendering (skip emitting batches and fences/waits
 798     * to the kernel)
 799     */
 800    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 801
 802    return GL_TRUE;
 803 }
 804
 805 void
 806 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 807 {
 808    struct intel_context *intel =
 809       (struct intel_context *) driContextPriv->driverPrivate;
 810
 811    assert(intel);               /* should never be null */
 812    if (intel) {
 813       GLboolean release_texture_heaps;
 814
 815       INTEL_FIREVERTICES(intel);
 816
 817       meta_destroy_metaops(&intel->meta);
 818
 819       intel->vtbl.destroy(intel);
 820
 821       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 822       _swsetup_DestroyContext(&intel->ctx);
 823       _tnl_DestroyContext(&intel->ctx);
 824       _vbo_DestroyContext(&intel->ctx);
 825
 826       _swrast_DestroyContext(&intel->ctx);
 827       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 828
 829       intel_batchbuffer_free(intel->batch);
 830       intel->batch = NULL;
 831
 832       free(intel->prim.vb);
 833       intel->prim.vb = NULL;
 834       dri_bo_unreference(intel->prim.vb_bo);
 835       intel->prim.vb_bo = NULL;
 836       dri_bo_unreference(intel->first_post_swapbuffers_batch);
 837       intel->first_post_swapbuffers_batch = NULL;
 838
 839       if (release_texture_heaps) {
 840          /* Nothing is currently done here to free texture heaps;
 841           * but we're not using the texture heap utilities, so I
 842           * rather think we shouldn't.  I've taken a look, and can't
 843           * find any private texture data hanging around anywhere, but
 844           * I'm not yet certain there isn't any at all...
 845           */
 846          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 847             fprintf(stderr, "do something to free texture heaps\n");
 848           */
 849       }
 850
 851       /* XXX In intelMakeCurrent() below, the context's static regions are
 852        * referenced inside the frame buffer; it's listed as a hack,
 853        * with a comment of "XXX FBO temporary fix-ups!", but
 854        * as long as it's there, we should release the regions here.
 855        * The do/while loop around the block is used to allow the
 856        * "continue" statements inside the block to exit the block,
 857        * to avoid many layers of "if" constructs.
 858        */
 859       do {
 860          __DRIdrawablePrivate * driDrawPriv = intel->driDrawable;
 861          struct intel_framebuffer *intel_fb;
 862          struct intel_renderbuffer *irbDepth, *irbStencil;
 863          if (!driDrawPriv) {
 864             /* We're already detached from the drawable; exit this block. */
 865             continue;
 866          }
 867          intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 868          if (!intel_fb) {
 869             /* The frame buffer is already gone; exit this block. */
 870             continue;
 871          }
 872          irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 873          irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 874
 875          /* If the regions of the frame buffer still match the regions
 876           * of the context, release them.  If they've changed somehow,
 877           * leave them alone.
 878           */
 879          if (intel_fb->color_rb[0] && intel_fb->color_rb[0]->region == intel->front_region) {
 880             intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 881          }
 882          if (intel_fb->color_rb[1] && intel_fb->color_rb[1]->region == intel->back_region) {
 883             intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 884          }
 885
 886          if (irbDepth && irbDepth->region == intel->depth_region) {
 887             intel_renderbuffer_set_region(irbDepth, NULL);
 888          }
 889          /* Usually, the stencil buffer is the same as the depth buffer;
 890           * but they're handled separately in MakeCurrent, so we'll
 891           * handle them separately here.
 892           */
 893          if (irbStencil && irbStencil->region == intel->depth_region) {
 894             intel_renderbuffer_set_region(irbStencil, NULL);
 895          }
 896       } while (0);
 897
 898       intel_region_release(&intel->front_region);
 899       intel_region_release(&intel->back_region);
 900       intel_region_release(&intel->depth_region);
 901
 902       driDestroyOptionCache(&intel->optionCache);
 903
 904       /* free the Mesa context */
 905       _mesa_free_context_data(&intel->ctx);
 906
 907       FREE(intel);
 908       driContextPriv->driverPrivate = NULL;
 909    }
 910 }
 911
 912 GLboolean
 913 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 914 {
 915    struct intel_context *intel =
 916       (struct intel_context *) driContextPriv->driverPrivate;
 917
 918    /* Deassociate the context with the drawables.
 919     */
 920    intel->driDrawable = NULL;
 921    intel->driReadDrawable = NULL;
 922
 923    return GL_TRUE;
 924 }
 925
 926 GLboolean
 927 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 928                  __DRIdrawablePrivate * driDrawPriv,
 929                  __DRIdrawablePrivate * driReadPriv)
 930 {
 931    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 932
 933    if (driContextPriv) {
 934       struct intel_context *intel =
 935          (struct intel_context *) driContextPriv->driverPrivate;
 936       struct intel_framebuffer *intel_fb =
 937          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 938       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 939
 940       if (driContextPriv->driScreenPriv->dri2.enabled) {
 941           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 942           if (driDrawPriv != driReadPriv)
 943               intel_update_renderbuffers(driContextPriv, driReadPriv);
 944       } else {
 945           /* XXX FBO temporary fix-ups!  These are released in
 946            * intelDextroyContext(), above.  Changes here should be
 947            * reflected there.
 948            */
 949           /* if the renderbuffers don't have regions, init them from the context */
 950          struct intel_renderbuffer *irbDepth
 951             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 952          struct intel_renderbuffer *irbStencil
 953             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 954
 955          if (intel_fb->color_rb[0]) {
 956             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 957                                           intel->front_region);
 958          }
 959          if (intel_fb->color_rb[1]) {
 960             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 961                                           intel->back_region);
 962          }
 963
 964          if (irbDepth) {
 965             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 966          }
 967          if (irbStencil) {
 968             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 969          }
 970       }
 971
 972       /* set GLframebuffer size to match window, if needed */
 973       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 974
 975       if (driReadPriv != driDrawPriv) {
 976          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 977       }
 978
 979       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 980
 981       /* The drawbuffer won't always be updated by _mesa_make_current:
 982        */
 983       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 984
 985          if (intel->driReadDrawable != driReadPriv)
 986             intel->driReadDrawable = driReadPriv;
 987
 988          if (intel->driDrawable != driDrawPriv) {
 989             if (driDrawPriv->swap_interval == (unsigned)-1) {
 990                int i;
 991
 992                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 993                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 994                  : VBLANK_FLAG_NO_IRQ;
 995
 996                /* Prevent error printf if one crtc is disabled, this will
 997                 * be properly calculated in intelWindowMoved() next.
 998                 */
 999                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
1000
1001                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
1002                driDrawableInitVBlank(driDrawPriv);
1003                intel_fb->vbl_waited = driDrawPriv->vblSeq;
1004
1005                for (i = 0; i < 2; i++) {
1006                   if (intel_fb->color_rb[i])
1007                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
1008                }
1009             }
1010             intel->driDrawable = driDrawPriv;
1011             intelWindowMoved(intel);
1012          }
1013
1014          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
1015       }
1016    }
1017    else {
1018       _mesa_make_current(NULL, NULL, NULL);
1019    }
1020
1021    return GL_TRUE;
1022 }
1023
1024 static void
1025 intelContendedLock(struct intel_context *intel, GLuint flags)
1026 {
1027    __DRIdrawablePrivate *dPriv = intel->driDrawable;
1028    __DRIscreenPrivate *sPriv = intel->driScreen;
1029    volatile drm_i915_sarea_t *sarea = intel->sarea;
1030    int me = intel->hHWContext;
1031
1032    drmGetLock(intel->driFd, intel->hHWContext, flags);
1033
1034    if (INTEL_DEBUG & DEBUG_LOCK)
1035       _mesa_printf("%s - got contended lock\n", __progname);
1036
1037    /* If the window moved, may need to set a new cliprect now.
1038     *
1039     * NOTE: This releases and regains the hw lock, so all state
1040     * checking must be done *after* this call:
1041     */
1042    if (dPriv)
1043        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1044
1045    if (sarea && sarea->ctxOwner != me) {
1046       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1047          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1048                  sarea->ctxOwner, me);
1049       }
1050       sarea->ctxOwner = me;
1051    }
1052
1053    /* If the last consumer of the texture memory wasn't us, notify the fake
1054     * bufmgr and record the new owner.  We should have the memory shared
1055     * between contexts of a single fake bufmgr, but this will at least make
1056     * things correct for now.
1057     */
1058    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1059       sarea->texAge = intel->hHWContext;
1060       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1061       if (INTEL_DEBUG & DEBUG_BATCH)
1062          intel_decode_context_reset();
1063       if (INTEL_DEBUG & DEBUG_BUFMGR)
1064          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1065                  sarea->ctxOwner, intel->hHWContext);
1066    }
1067
1068    /* Drawable changed?
1069     */
1070    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1071        intelWindowMoved(intel);
1072        intel->lastStamp = dPriv->lastStamp;
1073    }
1074 }
1075
1076
1077 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1078
1079 /* Lock the hardware and validate our state.
1080  */
1081 void LOCK_HARDWARE( struct intel_context *intel )
1082 {
1083     __DRIdrawable *dPriv = intel->driDrawable;
1084     __DRIscreen *sPriv = intel->driScreen;
1085     char __ret = 0;
1086     struct intel_framebuffer *intel_fb = NULL;
1087     struct intel_renderbuffer *intel_rb = NULL;
1088
1089     intel->locked++;
1090     if (intel->locked >= 2)
1091        return;
1092
1093     if (!sPriv->dri2.enabled)
1094        _glthread_LOCK_MUTEX(lockMutex);
1095
1096     if (intel->driDrawable) {
1097        intel_fb = intel->driDrawable->driverPrivate;
1098
1099        if (intel_fb)
1100           intel_rb =
1101              intel_get_renderbuffer(&intel_fb->Base,
1102                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1103     }
1104
1105     if (intel_rb && dPriv->vblFlags &&
1106         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1107         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1108         drmVBlank vbl;
1109
1110         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1111
1112         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1113             vbl.request.type |= DRM_VBLANK_SECONDARY;
1114         }
1115
1116         vbl.request.sequence = intel_rb->vbl_pending;
1117         drmWaitVBlank(intel->driFd, &vbl);
1118         intel_fb->vbl_waited = vbl.reply.sequence;
1119     }
1120
1121     if (!sPriv->dri2.enabled) {
1122         DRM_CAS(intel->driHwLock, intel->hHWContext,
1123                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1124
1125         if (__ret)
1126             intelContendedLock( intel, 0 );
1127     }
1128
1129
1130     if (INTEL_DEBUG & DEBUG_LOCK)
1131       _mesa_printf("%s - locked\n", __progname);
1132 }
1133
1134
1135 /* Unlock the hardware using the global current context
1136  */
1137 void UNLOCK_HARDWARE( struct intel_context *intel )
1138 {
1139     __DRIscreen *sPriv = intel->driScreen;
1140
1141    intel->locked--;
1142    if (intel->locked > 0)
1143       return;
1144
1145    assert(intel->locked == 0);
1146
1147    if (!sPriv->dri2.enabled) {
1148       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1149       _glthread_UNLOCK_MUTEX(lockMutex);
1150    }
1151
1152    if (INTEL_DEBUG & DEBUG_LOCK)
1153       _mesa_printf("%s - unlocked\n", __progname);
1154
1155    /**
1156     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1157     * cliprects.
1158     */
1159    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1160       intel_batchbuffer_flush(intel->batch);
1161 }
1162