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       default:
 165          chipset = "Unknown Intel Chipset";
 166          break;
 167       }
 168
 169       (void) driGetRendererString(buffer, chipset,
 170                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 171                                   0);
 172       return (GLubyte *) buffer;
 173
 174    default:
 175       return NULL;
 176    }
 177 }
 178
 179 static unsigned
 180 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 181 {
 182    switch (rb->Base._ActualFormat) {
 183    case GL_RGB5:
 184    case GL_DEPTH_COMPONENT16:
 185       return 16;
 186    case GL_RGB8:
 187    case GL_RGBA8:
 188    case GL_DEPTH_COMPONENT24:
 189    case GL_DEPTH24_STENCIL8_EXT:
 190    case GL_STENCIL_INDEX8_EXT:
 191       return 32;
 192    default:
 193       return 0;
 194    }
 195 }
 196
 197 void
 198 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 199 {
 200    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 201    struct intel_renderbuffer *rb;
 202    struct intel_region *region, *depth_region;
 203    struct intel_context *intel = context->driverPrivate;
 204    __DRIbuffer *buffers = NULL;
 205    __DRIscreen *screen;
 206    int i, count;
 207    unsigned int attachments[10];
 208    uint32_t name;
 209    const char *region_name;
 210
 211    if (INTEL_DEBUG & DEBUG_DRI)
 212       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 213
 214    screen = intel->intelScreen->driScrnPriv;
 215
 216    if (screen->dri2.loader
 217        && (screen->dri2.loader->base.version > 2)
 218        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 219       struct intel_renderbuffer *depth_rb;
 220       struct intel_renderbuffer *stencil_rb;
 221
 222       i = 0;
 223       if ((intel->is_front_buffer_rendering ||
 224            intel->is_front_buffer_reading ||
 225            !intel_fb->color_rb[1])
 226            && intel_fb->color_rb[0]) {
 227          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 228          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 229       }
 230
 231       if (intel_fb->color_rb[1]) {
 232          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 233          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 234       }
 235
 236       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 237       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 238
 239       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 240          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 241          attachments[i++] = intel_bits_per_pixel(depth_rb);
 242       } else if (depth_rb != NULL) {
 243          attachments[i++] = __DRI_BUFFER_DEPTH;
 244          attachments[i++] = intel_bits_per_pixel(depth_rb);
 245       } else if (stencil_rb != NULL) {
 246          attachments[i++] = __DRI_BUFFER_STENCIL;
 247          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 248       }
 249
 250       buffers =
 251          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 252                                                       &drawable->w,
 253                                                       &drawable->h,
 254                                                       attachments, i / 2,
 255                                                       &count,
 256                                                       drawable->loaderPrivate);
 257    } else if (screen->dri2.loader) {
 258       i = 0;
 259       if (intel_fb->color_rb[0])
 260          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 261       if (intel_fb->color_rb[1])
 262          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 263       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 264          attachments[i++] = __DRI_BUFFER_DEPTH;
 265       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 266          attachments[i++] = __DRI_BUFFER_STENCIL;
 267
 268       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 269                                                    &drawable->w,
 270                                                    &drawable->h,
 271                                                    attachments, i,
 272                                                    &count,
 273                                                    drawable->loaderPrivate);
 274    }
 275
 276    if (buffers == NULL)
 277       return;
 278
 279    drawable->x = 0;
 280    drawable->y = 0;
 281    drawable->backX = 0;
 282    drawable->backY = 0;
 283    drawable->numClipRects = 1;
 284    drawable->pClipRects[0].x1 = 0;
 285    drawable->pClipRects[0].y1 = 0;
 286    drawable->pClipRects[0].x2 = drawable->w;
 287    drawable->pClipRects[0].y2 = drawable->h;
 288    drawable->numBackClipRects = 1;
 289    drawable->pBackClipRects[0].x1 = 0;
 290    drawable->pBackClipRects[0].y1 = 0;
 291    drawable->pBackClipRects[0].x2 = drawable->w;
 292    drawable->pBackClipRects[0].y2 = drawable->h;
 293
 294    depth_region = NULL;
 295    for (i = 0; i < count; i++) {
 296        switch (buffers[i].attachment) {
 297        case __DRI_BUFFER_FRONT_LEFT:
 298            rb = intel_fb->color_rb[0];
 299            region_name = "dri2 front buffer";
 300            break;
 301
 302        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 303            rb = intel_fb->color_rb[0];
 304            region_name = "dri2 fake front buffer";
 305            break;
 306
 307        case __DRI_BUFFER_BACK_LEFT:
 308            rb = intel_fb->color_rb[1];
 309            region_name = "dri2 back buffer";
 310            break;
 311
 312        case __DRI_BUFFER_DEPTH:
 313            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 314            region_name = "dri2 depth buffer";
 315            break;
 316
 317        case __DRI_BUFFER_DEPTH_STENCIL:
 318            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 319            region_name = "dri2 depth / stencil buffer";
 320            break;
 321
 322        case __DRI_BUFFER_STENCIL:
 323            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 324            region_name = "dri2 stencil buffer";
 325            break;
 326
 327        case __DRI_BUFFER_ACCUM:
 328        default:
 329            fprintf(stderr,
 330                    "unhandled buffer attach event, attacment type %d\n",
 331                    buffers[i].attachment);
 332            return;
 333        }
 334
 335        if (rb == NULL)
 336           continue;
 337
 338        if (rb->region) {
 339           dri_bo_flink(rb->region->buffer, &name);
 340           if (name == buffers[i].name)
 341              continue;
 342        }
 343
 344        if (INTEL_DEBUG & DEBUG_DRI)
 345           fprintf(stderr,
 346                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 347                   buffers[i].name, buffers[i].attachment,
 348                   buffers[i].cpp, buffers[i].pitch);
 349
 350        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 351           if (INTEL_DEBUG & DEBUG_DRI)
 352              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 353           intel_region_reference(&region, depth_region);
 354        }
 355        else
 356           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 357                                                  drawable->w,
 358                                                  drawable->h,
 359                                                  buffers[i].pitch / buffers[i].cpp,
 360                                                  buffers[i].name,
 361                                                  region_name);
 362
 363        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 364           depth_region = region;
 365
 366        intel_renderbuffer_set_region(rb, region);
 367        intel_region_release(&region);
 368
 369        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 370           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 371           if (rb != NULL) {
 372              struct intel_region *stencil_region = NULL;
 373
 374              if (rb->region) {
 375                 dri_bo_flink(rb->region->buffer, &name);
 376                 if (name == buffers[i].name)
 377                    continue;
 378              }
 379
 380              intel_region_reference(&stencil_region, region);
 381              intel_renderbuffer_set_region(rb, stencil_region);
 382              intel_region_release(&stencil_region);
 383           }
 384        }
 385    }
 386
 387    driUpdateFramebufferSize(&intel->ctx, drawable);
 388 }
 389
 390 void
 391 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 392 {
 393     struct intel_context *intel = intel_context(ctx);
 394     __DRIcontext *driContext = intel->driContext;
 395     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 396                          GLsizei w, GLsizei h);
 397
 398     if (!driContext->driScreenPriv->dri2.enabled)
 399         return;
 400
 401     if (!intel->internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 402        /* If we're rendering to the fake front buffer, make sure all the pending
 403         * drawing has landed on the real front buffer.  Otherwise when we
 404         * eventually get to DRI2GetBuffersWithFormat the stale real front
 405         * buffer contents will get copied to the new fake front buffer.
 406         */
 407        if (intel->is_front_buffer_rendering) {
 408           intel_flush(ctx, GL_FALSE);
 409        }
 410
 411        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 412        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 413           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 414     }
 415
 416     old_viewport = ctx->Driver.Viewport;
 417     ctx->Driver.Viewport = NULL;
 418     intel->driDrawable = driContext->driDrawablePriv;
 419     intelWindowMoved(intel);
 420     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 421     ctx->Driver.Viewport = old_viewport;
 422 }
 423
 424
 425 static const struct dri_debug_control debug_control[] = {
 426    { "tex",   DEBUG_TEXTURE},
 427    { "state", DEBUG_STATE},
 428    { "ioctl", DEBUG_IOCTL},
 429    { "blit",  DEBUG_BLIT},
 430    { "mip",   DEBUG_MIPTREE},
 431    { "fall",  DEBUG_FALLBACKS},
 432    { "verb",  DEBUG_VERBOSE},
 433    { "bat",   DEBUG_BATCH},
 434    { "pix",   DEBUG_PIXEL},
 435    { "buf",   DEBUG_BUFMGR},
 436    { "reg",   DEBUG_REGION},
 437    { "fbo",   DEBUG_FBO},
 438    { "lock",  DEBUG_LOCK},
 439    { "sync",  DEBUG_SYNC},
 440    { "prim",  DEBUG_PRIMS },
 441    { "vert",  DEBUG_VERTS },
 442    { "dri",   DEBUG_DRI },
 443    { "dma",   DEBUG_DMA },
 444    { "san",   DEBUG_SANITY },
 445    { "sleep", DEBUG_SLEEP },
 446    { "stats", DEBUG_STATS },
 447    { "tile",  DEBUG_TILE },
 448    { "sing",  DEBUG_SINGLE_THREAD },
 449    { "thre",  DEBUG_SINGLE_THREAD },
 450    { "wm",    DEBUG_WM },
 451    { "urb",   DEBUG_URB },
 452    { "vs",    DEBUG_VS },
 453    { NULL,    0 }
 454 };
 455
 456
 457 static void
 458 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 459 {
 460     struct intel_context *intel = intel_context(ctx);
 461
 462    _swrast_InvalidateState(ctx, new_state);
 463    _swsetup_InvalidateState(ctx, new_state);
 464    _vbo_InvalidateState(ctx, new_state);
 465    _tnl_InvalidateState(ctx, new_state);
 466    _tnl_invalidate_vertex_state(ctx, new_state);
 467
 468    intel->NewGLState |= new_state;
 469
 470    if (intel->vtbl.invalidate_state)
 471       intel->vtbl.invalidate_state( intel, new_state );
 472 }
 473
 474 static void
 475 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 476 {
 477    struct intel_context *intel = intel_context(ctx);
 478
 479    if (intel->Fallback)
 480       _swrast_flush(ctx);
 481
 482    if (!IS_965(intel->intelScreen->deviceID))
 483       INTEL_FIREVERTICES(intel);
 484
 485    /* Emit a flush so that any frontbuffer rendering that might have occurred
 486     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 487     * a flush for us.
 488     */
 489    if (needs_mi_flush)
 490       intel_batchbuffer_emit_mi_flush(intel->batch);
 491
 492    if (intel->batch->map != intel->batch->ptr)
 493       intel_batchbuffer_flush(intel->batch);
 494
 495    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 496       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 497
 498       if (screen->dri2.loader &&
 499           (screen->dri2.loader->base.version >= 2)
 500           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 501          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 502                                                   intel->driDrawable->loaderPrivate);
 503
 504          /* Only clear the dirty bit if front-buffer rendering is no longer
 505           * enabled.  This is done so that the dirty bit can only be set in
 506           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 507           * each of N places that do rendering.  This has worse performances,
 508           * but it is much easier to get correct.
 509           */
 510          if (!intel->is_front_buffer_rendering) {
 511             intel->front_buffer_dirty = GL_FALSE;
 512          }
 513       }
 514    }
 515 }
 516
 517 void
 518 intelFlush(GLcontext * ctx)
 519 {
 520    intel_flush(ctx, GL_FALSE);
 521 }
 522
 523 static void
 524 intel_glFlush(GLcontext *ctx)
 525 {
 526    struct intel_context *intel = intel_context(ctx);
 527
 528    intel_flush(ctx, GL_TRUE);
 529
 530    /* We're using glFlush as an indicator that a frame is done, which is
 531     * what DRI2 does before calling SwapBuffers (and means we should catch
 532     * people doing front-buffer rendering, as well)..
 533     *
 534     * Wait for the swapbuffers before the one we just emitted, so we don't
 535     * get too many swaps outstanding for apps that are GPU-heavy but not
 536     * CPU-heavy.
 537     *
 538     * Unfortunately, we don't have a handle to the batch containing the swap,
 539     * and getting our hands on that doesn't seem worth it, so we just us the
 540     * first batch we emitted after the last swap.
 541     */
 542    if (intel->first_post_swapbuffers_batch != NULL) {
 543       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 544       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 545       intel->first_post_swapbuffers_batch = NULL;
 546    }
 547 }
 548
 549 void
 550 intelFinish(GLcontext * ctx)
 551 {
 552    struct gl_framebuffer *fb = ctx->DrawBuffer;
 553    int i;
 554
 555    intelFlush(ctx);
 556
 557    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 558        struct intel_renderbuffer *irb;
 559
 560        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 561
 562        if (irb && irb->region)
 563           dri_bo_wait_rendering(irb->region->buffer);
 564    }
 565    if (fb->_DepthBuffer) {
 566       /* XXX: Wait on buffer idle */
 567    }
 568 }
 569
 570 void
 571 intelInitDriverFunctions(struct dd_function_table *functions)
 572 {
 573    _mesa_init_driver_functions(functions);
 574
 575    functions->Flush = intel_glFlush;
 576    functions->Finish = intelFinish;
 577    functions->GetString = intelGetString;
 578    functions->UpdateState = intelInvalidateState;
 579
 580    functions->CopyColorTable = _swrast_CopyColorTable;
 581    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 582    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 583    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 584
 585    intelInitTextureFuncs(functions);
 586    intelInitStateFuncs(functions);
 587    intelInitClearFuncs(functions);
 588    intelInitBufferFuncs(functions);
 589    intelInitPixelFuncs(functions);
 590 }
 591
 592
 593 GLboolean
 594 intelInitContext(struct intel_context *intel,
 595                  const __GLcontextModes * mesaVis,
 596                  __DRIcontextPrivate * driContextPriv,
 597                  void *sharedContextPrivate,
 598                  struct dd_function_table *functions)
 599 {
 600    GLcontext *ctx = &intel->ctx;
 601    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 602    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 603    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 604    int fthrottle_mode;
 605
 606    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 607                                  functions, (void *) intel)) {
 608       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 609       return GL_FALSE;
 610    }
 611
 612    driContextPriv->driverPrivate = intel;
 613    intel->intelScreen = intelScreen;
 614    intel->driScreen = sPriv;
 615    intel->sarea = intelScreen->sarea;
 616    intel->driContext = driContextPriv;
 617
 618    /* Dri stuff */
 619    intel->hHWContext = driContextPriv->hHWContext;
 620    intel->driFd = sPriv->fd;
 621    intel->driHwLock = sPriv->lock;
 622
 623    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 624                        intel->driScreen->myNum,
 625                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 626    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 627       intel->maxBatchSize = 4096;
 628    else
 629       intel->maxBatchSize = BATCH_SZ;
 630
 631    intel->bufmgr = intelScreen->bufmgr;
 632    intel->ttm = intelScreen->ttm;
 633    if (intel->ttm) {
 634       int bo_reuse_mode;
 635
 636       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 637       switch (bo_reuse_mode) {
 638       case DRI_CONF_BO_REUSE_DISABLED:
 639          break;
 640       case DRI_CONF_BO_REUSE_ALL:
 641          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 642          break;
 643       }
 644    }
 645
 646    /* This doesn't yet catch all non-conformant rendering, but it's a
 647     * start.
 648     */
 649    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 650       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 651       if (value > 0) {
 652          intel->conformance_mode = value;
 653       }
 654       else {
 655          intel->conformance_mode = 1;
 656       }
 657    }
 658
 659    if (intel->conformance_mode > 0) {
 660       ctx->Const.MinLineWidth = 1.0;
 661       ctx->Const.MinLineWidthAA = 1.0;
 662       ctx->Const.MaxLineWidth = 1.0;
 663       ctx->Const.MaxLineWidthAA = 1.0;
 664       ctx->Const.LineWidthGranularity = 1.0;
 665    }
 666    else {
 667       ctx->Const.MinLineWidth = 1.0;
 668       ctx->Const.MinLineWidthAA = 1.0;
 669       ctx->Const.MaxLineWidth = 5.0;
 670       ctx->Const.MaxLineWidthAA = 5.0;
 671       ctx->Const.LineWidthGranularity = 0.5;
 672    }
 673
 674    ctx->Const.MinPointSize = 1.0;
 675    ctx->Const.MinPointSizeAA = 1.0;
 676    ctx->Const.MaxPointSize = 255.0;
 677    ctx->Const.MaxPointSizeAA = 3.0;
 678    ctx->Const.PointSizeGranularity = 1.0;
 679
 680    /* reinitialize the context point state.
 681     * It depend on constants in __GLcontextRec::Const
 682     */
 683    _mesa_init_point(ctx);
 684
 685    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 686
 687    /* Initialize the software rasterizer and helper modules. */
 688    _swrast_CreateContext(ctx);
 689    _vbo_CreateContext(ctx);
 690    _tnl_CreateContext(ctx);
 691    _swsetup_CreateContext(ctx);
 692
 693    /* Configure swrast to match hardware characteristics: */
 694    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 695    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 696
 697    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 698    intel->hw_stipple = 1;
 699
 700    /* XXX FBO: this doesn't seem to be used anywhere */
 701    switch (mesaVis->depthBits) {
 702    case 0:                     /* what to do in this case? */
 703    case 16:
 704       intel->polygon_offset_scale = 1.0;
 705       break;
 706    case 24:
 707       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 708       break;
 709    default:
 710       assert(0);
 711       break;
 712    }
 713
 714    if (IS_965(intelScreen->deviceID))
 715       intel->polygon_offset_scale /= 0xffff;
 716
 717    intel->RenderIndex = ~0;
 718
 719    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 720    intel->irqsEmitted = 0;
 721
 722    intel->do_irqs = (intel->intelScreen->irq_active &&
 723                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 724
 725    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 726
 727    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 728       _mesa_printf("IRQs not active.  Exiting\n");
 729       exit(1);
 730    }
 731
 732    intelInitExtensions(ctx, GL_FALSE);
 733
 734    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 735    if (INTEL_DEBUG & DEBUG_BUFMGR)
 736       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 737
 738    if (!sPriv->dri2.enabled)
 739       intel_recreate_static_regions(intel);
 740
 741    intel->batch = intel_batchbuffer_alloc(intel);
 742
 743    intel_bufferobj_init(intel);
 744    intel_fbo_init(intel);
 745
 746    if (intel->ctx.Mesa_DXTn) {
 747       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 748       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 749    }
 750    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 751       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 752    }
 753
 754    intel->prim.primitive = ~0;
 755
 756    /* Force all software fallbacks */
 757    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 758       fprintf(stderr, "disabling 3D rasterization\n");
 759       intel->no_rast = 1;
 760    }
 761
 762    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 763       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 764       intel->always_flush_batch = 1;
 765    }
 766
 767    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 768       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 769       intel->always_flush_cache = 1;
 770    }
 771
 772    /* Disable all hardware rendering (skip emitting batches and fences/waits
 773     * to the kernel)
 774     */
 775    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 776
 777    return GL_TRUE;
 778 }
 779
 780 void
 781 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 782 {
 783    struct intel_context *intel =
 784       (struct intel_context *) driContextPriv->driverPrivate;
 785
 786    assert(intel);               /* should never be null */
 787    if (intel) {
 788       GLboolean release_texture_heaps;
 789
 790       INTEL_FIREVERTICES(intel);
 791
 792       if (intel->clear.arrayObj)
 793          _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
 794
 795       intel->vtbl.destroy(intel);
 796
 797       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 798       _swsetup_DestroyContext(&intel->ctx);
 799       _tnl_DestroyContext(&intel->ctx);
 800       _vbo_DestroyContext(&intel->ctx);
 801
 802       _swrast_DestroyContext(&intel->ctx);
 803       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 804
 805       intel_batchbuffer_free(intel->batch);
 806       intel->batch = NULL;
 807
 808       free(intel->prim.vb);
 809       intel->prim.vb = NULL;
 810       dri_bo_unreference(intel->prim.vb_bo);
 811       intel->prim.vb_bo = NULL;
 812       dri_bo_unreference(intel->first_post_swapbuffers_batch);
 813       intel->first_post_swapbuffers_batch = NULL;
 814
 815       if (release_texture_heaps) {
 816          /* This share group is about to go away, free our private
 817           * texture object data.
 818           */
 819          if (INTEL_DEBUG & DEBUG_TEXTURE)
 820             fprintf(stderr, "do something to free texture heaps\n");
 821       }
 822
 823       intel_region_release(&intel->front_region);
 824       intel_region_release(&intel->back_region);
 825       intel_region_release(&intel->depth_region);
 826
 827       driDestroyOptionCache(&intel->optionCache);
 828
 829       /* free the Mesa context */
 830       _mesa_free_context_data(&intel->ctx);
 831
 832       FREE(intel);
 833       driContextPriv->driverPrivate = NULL;
 834    }
 835 }
 836
 837 GLboolean
 838 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 839 {
 840    return GL_TRUE;
 841 }
 842
 843 GLboolean
 844 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 845                  __DRIdrawablePrivate * driDrawPriv,
 846                  __DRIdrawablePrivate * driReadPriv)
 847 {
 848    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 849
 850    if (driContextPriv) {
 851       struct intel_context *intel =
 852          (struct intel_context *) driContextPriv->driverPrivate;
 853       struct intel_framebuffer *intel_fb =
 854          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 855       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 856
 857       if (driContextPriv->driScreenPriv->dri2.enabled) {
 858           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 859           if (driDrawPriv != driReadPriv)
 860               intel_update_renderbuffers(driContextPriv, driReadPriv);
 861       } else {
 862           /* XXX FBO temporary fix-ups! */
 863           /* if the renderbuffers don't have regions, init them from the context */
 864          struct intel_renderbuffer *irbDepth
 865             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 866          struct intel_renderbuffer *irbStencil
 867             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 868
 869          if (intel_fb->color_rb[0]) {
 870             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 871                                           intel->front_region);
 872          }
 873          if (intel_fb->color_rb[1]) {
 874             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 875                                           intel->back_region);
 876          }
 877
 878          if (irbDepth) {
 879             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 880          }
 881          if (irbStencil) {
 882             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 883          }
 884       }
 885
 886       /* set GLframebuffer size to match window, if needed */
 887       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 888
 889       if (driReadPriv != driDrawPriv) {
 890          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 891       }
 892
 893       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 894
 895       /* The drawbuffer won't always be updated by _mesa_make_current:
 896        */
 897       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 898
 899          if (intel->driReadDrawable != driReadPriv)
 900             intel->driReadDrawable = driReadPriv;
 901
 902          if (intel->driDrawable != driDrawPriv) {
 903             if (driDrawPriv->swap_interval == (unsigned)-1) {
 904                int i;
 905
 906                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 907                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 908                  : VBLANK_FLAG_NO_IRQ;
 909
 910                /* Prevent error printf if one crtc is disabled, this will
 911                 * be properly calculated in intelWindowMoved() next.
 912                 */
 913                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 914
 915                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 916                driDrawableInitVBlank(driDrawPriv);
 917                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 918
 919                for (i = 0; i < 2; i++) {
 920                   if (intel_fb->color_rb[i])
 921                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 922                }
 923             }
 924             intel->driDrawable = driDrawPriv;
 925             intelWindowMoved(intel);
 926          }
 927
 928          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 929       }
 930    }
 931    else {
 932       _mesa_make_current(NULL, NULL, NULL);
 933    }
 934
 935    return GL_TRUE;
 936 }
 937
 938 static void
 939 intelContendedLock(struct intel_context *intel, GLuint flags)
 940 {
 941    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 942    __DRIscreenPrivate *sPriv = intel->driScreen;
 943    volatile drm_i915_sarea_t *sarea = intel->sarea;
 944    int me = intel->hHWContext;
 945
 946    drmGetLock(intel->driFd, intel->hHWContext, flags);
 947    intel->locked = 1;
 948
 949    if (INTEL_DEBUG & DEBUG_LOCK)
 950       _mesa_printf("%s - got contended lock\n", __progname);
 951
 952    /* If the window moved, may need to set a new cliprect now.
 953     *
 954     * NOTE: This releases and regains the hw lock, so all state
 955     * checking must be done *after* this call:
 956     */
 957    if (dPriv)
 958        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 959
 960    if (sarea && sarea->ctxOwner != me) {
 961       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 962          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 963                  sarea->ctxOwner, me);
 964       }
 965       sarea->ctxOwner = me;
 966    }
 967
 968    /* If the last consumer of the texture memory wasn't us, notify the fake
 969     * bufmgr and record the new owner.  We should have the memory shared
 970     * between contexts of a single fake bufmgr, but this will at least make
 971     * things correct for now.
 972     */
 973    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 974       sarea->texAge = intel->hHWContext;
 975       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 976       if (INTEL_DEBUG & DEBUG_BATCH)
 977          intel_decode_context_reset();
 978       if (INTEL_DEBUG & DEBUG_BUFMGR)
 979          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 980                  sarea->ctxOwner, intel->hHWContext);
 981    }
 982
 983    /* Drawable changed?
 984     */
 985    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 986        intelWindowMoved(intel);
 987        intel->lastStamp = dPriv->lastStamp;
 988    }
 989 }
 990
 991
 992 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 993
 994 /* Lock the hardware and validate our state.
 995  */
 996 void LOCK_HARDWARE( struct intel_context *intel )
 997 {
 998     __DRIdrawable *dPriv = intel->driDrawable;
 999     __DRIscreen *sPriv = intel->driScreen;
1000     char __ret = 0;
1001     struct intel_framebuffer *intel_fb = NULL;
1002     struct intel_renderbuffer *intel_rb = NULL;
1003
1004     _glthread_LOCK_MUTEX(lockMutex);
1005     assert(!intel->locked);
1006     intel->locked = 1;
1007
1008     if (intel->driDrawable) {
1009        intel_fb = intel->driDrawable->driverPrivate;
1010
1011        if (intel_fb)
1012           intel_rb =
1013              intel_get_renderbuffer(&intel_fb->Base,
1014                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1015     }
1016
1017     if (intel_rb && dPriv->vblFlags &&
1018         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1019         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1020         drmVBlank vbl;
1021
1022         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1023
1024         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1025             vbl.request.type |= DRM_VBLANK_SECONDARY;
1026         }
1027
1028         vbl.request.sequence = intel_rb->vbl_pending;
1029         drmWaitVBlank(intel->driFd, &vbl);
1030         intel_fb->vbl_waited = vbl.reply.sequence;
1031     }
1032
1033     if (!sPriv->dri2.enabled) {
1034         DRM_CAS(intel->driHwLock, intel->hHWContext,
1035                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1036
1037         if (__ret)
1038             intelContendedLock( intel, 0 );
1039     }
1040
1041
1042     if (INTEL_DEBUG & DEBUG_LOCK)
1043       _mesa_printf("%s - locked\n", __progname);
1044 }
1045
1046
1047 /* Unlock the hardware using the global current context
1048  */
1049 void UNLOCK_HARDWARE( struct intel_context *intel )
1050 {
1051     __DRIscreen *sPriv = intel->driScreen;
1052
1053    intel->vtbl.note_unlock( intel );
1054    intel->locked = 0;
1055
1056    if (!sPriv->dri2.enabled)
1057       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1058
1059    _glthread_UNLOCK_MUTEX(lockMutex);
1060
1061    if (INTEL_DEBUG & DEBUG_LOCK)
1062       _mesa_printf("%s - unlocked\n", __progname);
1063
1064    /**
1065     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1066     * cliprects.
1067     */
1068    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1069       intel_batchbuffer_flush(intel->batch);
1070 }
1071