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_ILD_G:
 165          chipset = "Intel(R) IGDNG_D";
 166          break;
 167       case PCI_CHIP_ILM_G:
 168          chipset = "Intel(R) IGDNG_M";
 169          break;
 170       default:
 171          chipset = "Unknown Intel Chipset";
 172          break;
 173       }
 174
 175       (void) driGetRendererString(buffer, chipset,
 176                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 177                                   0);
 178       return (GLubyte *) buffer;
 179
 180    default:
 181       return NULL;
 182    }
 183 }
 184
 185 static unsigned
 186 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 187 {
 188    switch (rb->Base._ActualFormat) {
 189    case GL_RGB5:
 190    case GL_DEPTH_COMPONENT16:
 191       return 16;
 192    case GL_RGB8:
 193    case GL_RGBA8:
 194    case GL_DEPTH_COMPONENT24:
 195    case GL_DEPTH24_STENCIL8_EXT:
 196    case GL_STENCIL_INDEX8_EXT:
 197       return 32;
 198    default:
 199       return 0;
 200    }
 201 }
 202
 203 void
 204 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 205 {
 206    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 207    struct intel_renderbuffer *rb;
 208    struct intel_region *region, *depth_region;
 209    struct intel_context *intel = context->driverPrivate;
 210    __DRIbuffer *buffers = NULL;
 211    __DRIscreen *screen;
 212    int i, count;
 213    unsigned int attachments[10];
 214    uint32_t name;
 215    const char *region_name;
 216
 217    if (INTEL_DEBUG & DEBUG_DRI)
 218       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 219
 220    screen = intel->intelScreen->driScrnPriv;
 221
 222    if (screen->dri2.loader
 223        && (screen->dri2.loader->base.version > 2)
 224        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 225       struct intel_renderbuffer *depth_rb;
 226       struct intel_renderbuffer *stencil_rb;
 227
 228       i = 0;
 229       if ((intel->is_front_buffer_rendering ||
 230            intel->is_front_buffer_reading ||
 231            !intel_fb->color_rb[1])
 232            && intel_fb->color_rb[0]) {
 233          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 234          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 235       }
 236
 237       if (intel_fb->color_rb[1]) {
 238          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 239          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 240       }
 241
 242       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 243       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 244
 245       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 246          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 247          attachments[i++] = intel_bits_per_pixel(depth_rb);
 248       } else if (depth_rb != NULL) {
 249          attachments[i++] = __DRI_BUFFER_DEPTH;
 250          attachments[i++] = intel_bits_per_pixel(depth_rb);
 251       } else if (stencil_rb != NULL) {
 252          attachments[i++] = __DRI_BUFFER_STENCIL;
 253          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 254       }
 255
 256       buffers =
 257          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 258                                                       &drawable->w,
 259                                                       &drawable->h,
 260                                                       attachments, i / 2,
 261                                                       &count,
 262                                                       drawable->loaderPrivate);
 263    } else if (screen->dri2.loader) {
 264       i = 0;
 265       if (intel_fb->color_rb[0])
 266          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 267       if (intel_fb->color_rb[1])
 268          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 269       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 270          attachments[i++] = __DRI_BUFFER_DEPTH;
 271       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 272          attachments[i++] = __DRI_BUFFER_STENCIL;
 273
 274       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 275                                                    &drawable->w,
 276                                                    &drawable->h,
 277                                                    attachments, i,
 278                                                    &count,
 279                                                    drawable->loaderPrivate);
 280    }
 281
 282    if (buffers == NULL)
 283       return;
 284
 285    drawable->x = 0;
 286    drawable->y = 0;
 287    drawable->backX = 0;
 288    drawable->backY = 0;
 289    drawable->numClipRects = 1;
 290    drawable->pClipRects[0].x1 = 0;
 291    drawable->pClipRects[0].y1 = 0;
 292    drawable->pClipRects[0].x2 = drawable->w;
 293    drawable->pClipRects[0].y2 = drawable->h;
 294    drawable->numBackClipRects = 1;
 295    drawable->pBackClipRects[0].x1 = 0;
 296    drawable->pBackClipRects[0].y1 = 0;
 297    drawable->pBackClipRects[0].x2 = drawable->w;
 298    drawable->pBackClipRects[0].y2 = drawable->h;
 299
 300    depth_region = NULL;
 301    for (i = 0; i < count; i++) {
 302        switch (buffers[i].attachment) {
 303        case __DRI_BUFFER_FRONT_LEFT:
 304            rb = intel_fb->color_rb[0];
 305            region_name = "dri2 front buffer";
 306            break;
 307
 308        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 309            rb = intel_fb->color_rb[0];
 310            region_name = "dri2 fake front buffer";
 311            break;
 312
 313        case __DRI_BUFFER_BACK_LEFT:
 314            rb = intel_fb->color_rb[1];
 315            region_name = "dri2 back buffer";
 316            break;
 317
 318        case __DRI_BUFFER_DEPTH:
 319            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 320            region_name = "dri2 depth buffer";
 321            break;
 322
 323        case __DRI_BUFFER_DEPTH_STENCIL:
 324            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 325            region_name = "dri2 depth / stencil buffer";
 326            break;
 327
 328        case __DRI_BUFFER_STENCIL:
 329            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 330            region_name = "dri2 stencil buffer";
 331            break;
 332
 333        case __DRI_BUFFER_ACCUM:
 334        default:
 335            fprintf(stderr,
 336                    "unhandled buffer attach event, attacment type %d\n",
 337                    buffers[i].attachment);
 338            return;
 339        }
 340
 341        if (rb == NULL)
 342           continue;
 343
 344        if (rb->region) {
 345           dri_bo_flink(rb->region->buffer, &name);
 346           if (name == buffers[i].name)
 347              continue;
 348        }
 349
 350        if (INTEL_DEBUG & DEBUG_DRI)
 351           fprintf(stderr,
 352                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 353                   buffers[i].name, buffers[i].attachment,
 354                   buffers[i].cpp, buffers[i].pitch);
 355
 356        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 357           if (INTEL_DEBUG & DEBUG_DRI)
 358              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 359           intel_region_reference(&region, depth_region);
 360        }
 361        else
 362           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 363                                                  drawable->w,
 364                                                  drawable->h,
 365                                                  buffers[i].pitch / buffers[i].cpp,
 366                                                  buffers[i].name,
 367                                                  region_name);
 368
 369        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 370           depth_region = region;
 371
 372        intel_renderbuffer_set_region(rb, region);
 373        intel_region_release(&region);
 374
 375        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 376           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 377           if (rb != NULL) {
 378              struct intel_region *stencil_region = NULL;
 379
 380              if (rb->region) {
 381                 dri_bo_flink(rb->region->buffer, &name);
 382                 if (name == buffers[i].name)
 383                    continue;
 384              }
 385
 386              intel_region_reference(&stencil_region, region);
 387              intel_renderbuffer_set_region(rb, stencil_region);
 388              intel_region_release(&stencil_region);
 389           }
 390        }
 391    }
 392
 393    driUpdateFramebufferSize(&intel->ctx, drawable);
 394 }
 395
 396 void
 397 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 398 {
 399     struct intel_context *intel = intel_context(ctx);
 400     __DRIcontext *driContext = intel->driContext;
 401     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 402                          GLsizei w, GLsizei h);
 403
 404     if (!driContext->driScreenPriv->dri2.enabled)
 405         return;
 406
 407     if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 408        /* If we're rendering to the fake front buffer, make sure all the pending
 409         * drawing has landed on the real front buffer.  Otherwise when we
 410         * eventually get to DRI2GetBuffersWithFormat the stale real front
 411         * buffer contents will get copied to the new fake front buffer.
 412         */
 413        if (intel->is_front_buffer_rendering) {
 414           intel_flush(ctx, GL_FALSE);
 415        }
 416
 417        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 418        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 419           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 420     }
 421
 422     old_viewport = ctx->Driver.Viewport;
 423     ctx->Driver.Viewport = NULL;
 424     intel->driDrawable = driContext->driDrawablePriv;
 425     intelWindowMoved(intel);
 426     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 427     ctx->Driver.Viewport = old_viewport;
 428 }
 429
 430
 431 static const struct dri_debug_control debug_control[] = {
 432    { "tex",   DEBUG_TEXTURE},
 433    { "state", DEBUG_STATE},
 434    { "ioctl", DEBUG_IOCTL},
 435    { "blit",  DEBUG_BLIT},
 436    { "mip",   DEBUG_MIPTREE},
 437    { "fall",  DEBUG_FALLBACKS},
 438    { "verb",  DEBUG_VERBOSE},
 439    { "bat",   DEBUG_BATCH},
 440    { "pix",   DEBUG_PIXEL},
 441    { "buf",   DEBUG_BUFMGR},
 442    { "reg",   DEBUG_REGION},
 443    { "fbo",   DEBUG_FBO},
 444    { "lock",  DEBUG_LOCK},
 445    { "sync",  DEBUG_SYNC},
 446    { "prim",  DEBUG_PRIMS },
 447    { "vert",  DEBUG_VERTS },
 448    { "dri",   DEBUG_DRI },
 449    { "dma",   DEBUG_DMA },
 450    { "san",   DEBUG_SANITY },
 451    { "sleep", DEBUG_SLEEP },
 452    { "stats", DEBUG_STATS },
 453    { "tile",  DEBUG_TILE },
 454    { "sing",  DEBUG_SINGLE_THREAD },
 455    { "thre",  DEBUG_SINGLE_THREAD },
 456    { "wm",    DEBUG_WM },
 457    { "urb",   DEBUG_URB },
 458    { "vs",    DEBUG_VS },
 459    { NULL,    0 }
 460 };
 461
 462
 463 static void
 464 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 465 {
 466     struct intel_context *intel = intel_context(ctx);
 467
 468    _swrast_InvalidateState(ctx, new_state);
 469    _swsetup_InvalidateState(ctx, new_state);
 470    _vbo_InvalidateState(ctx, new_state);
 471    _tnl_InvalidateState(ctx, new_state);
 472    _tnl_invalidate_vertex_state(ctx, new_state);
 473
 474    intel->NewGLState |= new_state;
 475
 476    if (intel->vtbl.invalidate_state)
 477       intel->vtbl.invalidate_state( intel, new_state );
 478 }
 479
 480 static void
 481 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 482 {
 483    struct intel_context *intel = intel_context(ctx);
 484
 485    if (intel->Fallback)
 486       _swrast_flush(ctx);
 487
 488    if (!IS_965(intel->intelScreen->deviceID))
 489       INTEL_FIREVERTICES(intel);
 490
 491    /* Emit a flush so that any frontbuffer rendering that might have occurred
 492     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 493     * a flush for us.
 494     */
 495    if (needs_mi_flush)
 496       intel_batchbuffer_emit_mi_flush(intel->batch);
 497
 498    if (intel->batch->map != intel->batch->ptr)
 499       intel_batchbuffer_flush(intel->batch);
 500
 501    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 502       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 503
 504       if (screen->dri2.loader &&
 505           (screen->dri2.loader->base.version >= 2)
 506           && (screen->dri2.loader->flushFrontBuffer != NULL)) {
 507          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 508                                                   intel->driDrawable->loaderPrivate);
 509
 510          /* Only clear the dirty bit if front-buffer rendering is no longer
 511           * enabled.  This is done so that the dirty bit can only be set in
 512           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 513           * each of N places that do rendering.  This has worse performances,
 514           * but it is much easier to get correct.
 515           */
 516          if (intel->is_front_buffer_rendering) {
 517             intel->front_buffer_dirty = GL_FALSE;
 518          }
 519       }
 520    }
 521 }
 522
 523 void
 524 intelFlush(GLcontext * ctx)
 525 {
 526    intel_flush(ctx, GL_FALSE);
 527 }
 528
 529 static void
 530 intel_glFlush(GLcontext *ctx)
 531 {
 532    intel_flush(ctx, GL_TRUE);
 533 }
 534
 535 void
 536 intelFinish(GLcontext * ctx)
 537 {
 538    struct gl_framebuffer *fb = ctx->DrawBuffer;
 539    int i;
 540
 541    intelFlush(ctx);
 542
 543    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 544        struct intel_renderbuffer *irb;
 545
 546        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 547
 548        if (irb && irb->region)
 549           dri_bo_wait_rendering(irb->region->buffer);
 550    }
 551    if (fb->_DepthBuffer) {
 552       /* XXX: Wait on buffer idle */
 553    }
 554 }
 555
 556 void
 557 intelInitDriverFunctions(struct dd_function_table *functions)
 558 {
 559    _mesa_init_driver_functions(functions);
 560
 561    functions->Flush = intel_glFlush;
 562    functions->Finish = intelFinish;
 563    functions->GetString = intelGetString;
 564    functions->UpdateState = intelInvalidateState;
 565
 566    functions->CopyColorTable = _swrast_CopyColorTable;
 567    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 568    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 569    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 570
 571    intelInitTextureFuncs(functions);
 572    intelInitTextureImageFuncs(functions);
 573    intelInitTextureSubImageFuncs(functions);
 574    intelInitTextureCopyImageFuncs(functions);
 575    intelInitStateFuncs(functions);
 576    intelInitClearFuncs(functions);
 577    intelInitBufferFuncs(functions);
 578    intelInitPixelFuncs(functions);
 579    intelInitBufferObjectFuncs(functions);
 580 }
 581
 582
 583 GLboolean
 584 intelInitContext(struct intel_context *intel,
 585                  const __GLcontextModes * mesaVis,
 586                  __DRIcontextPrivate * driContextPriv,
 587                  void *sharedContextPrivate,
 588                  struct dd_function_table *functions)
 589 {
 590    GLcontext *ctx = &intel->ctx;
 591    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 592    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 593    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 594    int fthrottle_mode;
 595
 596    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 597                                  functions, (void *) intel)) {
 598       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 599       return GL_FALSE;
 600    }
 601
 602    driContextPriv->driverPrivate = intel;
 603    intel->intelScreen = intelScreen;
 604    intel->driScreen = sPriv;
 605    intel->sarea = intelScreen->sarea;
 606    intel->driContext = driContextPriv;
 607
 608    /* Dri stuff */
 609    intel->hHWContext = driContextPriv->hHWContext;
 610    intel->driFd = sPriv->fd;
 611    intel->driHwLock = sPriv->lock;
 612
 613    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 614                        intel->driScreen->myNum,
 615                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 616    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 617       intel->maxBatchSize = 4096;
 618    else
 619       intel->maxBatchSize = BATCH_SZ;
 620
 621    intel->bufmgr = intelScreen->bufmgr;
 622    intel->ttm = intelScreen->ttm;
 623    if (intel->ttm) {
 624       int bo_reuse_mode;
 625
 626       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 627       switch (bo_reuse_mode) {
 628       case DRI_CONF_BO_REUSE_DISABLED:
 629          break;
 630       case DRI_CONF_BO_REUSE_ALL:
 631          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 632          break;
 633       }
 634    }
 635
 636    /* This doesn't yet catch all non-conformant rendering, but it's a
 637     * start.
 638     */
 639    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 640       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 641       if (value > 0) {
 642          intel->conformance_mode = value;
 643       }
 644       else {
 645          intel->conformance_mode = 1;
 646       }
 647    }
 648
 649    if (intel->conformance_mode > 0) {
 650       ctx->Const.MinLineWidth = 1.0;
 651       ctx->Const.MinLineWidthAA = 1.0;
 652       ctx->Const.MaxLineWidth = 1.0;
 653       ctx->Const.MaxLineWidthAA = 1.0;
 654       ctx->Const.LineWidthGranularity = 1.0;
 655    }
 656    else {
 657       ctx->Const.MinLineWidth = 1.0;
 658       ctx->Const.MinLineWidthAA = 1.0;
 659       ctx->Const.MaxLineWidth = 5.0;
 660       ctx->Const.MaxLineWidthAA = 5.0;
 661       ctx->Const.LineWidthGranularity = 0.5;
 662    }
 663
 664    ctx->Const.MinPointSize = 1.0;
 665    ctx->Const.MinPointSizeAA = 1.0;
 666    ctx->Const.MaxPointSize = 255.0;
 667    ctx->Const.MaxPointSizeAA = 3.0;
 668    ctx->Const.PointSizeGranularity = 1.0;
 669
 670    /* reinitialize the context point state.
 671     * It depend on constants in __GLcontextRec::Const
 672     */
 673    _mesa_init_point(ctx);
 674
 675    meta_init_metaops(ctx, &intel->meta);
 676    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 677    if (IS_965(intelScreen->deviceID)) {
 678       if (MAX_WIDTH > 8192)
 679          ctx->Const.MaxRenderbufferSize = 8192;
 680    } else {
 681       if (MAX_WIDTH > 2048)
 682          ctx->Const.MaxRenderbufferSize = 2048;
 683    }
 684
 685    /* Initialize the software rasterizer and helper modules. */
 686    _swrast_CreateContext(ctx);
 687    _vbo_CreateContext(ctx);
 688    _tnl_CreateContext(ctx);
 689    _swsetup_CreateContext(ctx);
 690
 691    /* Configure swrast to match hardware characteristics: */
 692    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 693    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 694
 695    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 696    intel->hw_stipple = 1;
 697
 698    /* XXX FBO: this doesn't seem to be used anywhere */
 699    switch (mesaVis->depthBits) {
 700    case 0:                     /* what to do in this case? */
 701    case 16:
 702       intel->polygon_offset_scale = 1.0;
 703       break;
 704    case 24:
 705       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 706       break;
 707    default:
 708       assert(0);
 709       break;
 710    }
 711
 712    if (IS_965(intelScreen->deviceID))
 713       intel->polygon_offset_scale /= 0xffff;
 714
 715    intel->RenderIndex = ~0;
 716
 717    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 718    intel->irqsEmitted = 0;
 719
 720    intel->do_irqs = (intel->intelScreen->irq_active &&
 721                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 722
 723    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 724
 725    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 726       _mesa_printf("IRQs not active.  Exiting\n");
 727       exit(1);
 728    }
 729
 730    intelInitExtensions(ctx, GL_FALSE);
 731
 732    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 733    if (INTEL_DEBUG & DEBUG_BUFMGR)
 734       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 735
 736    if (!sPriv->dri2.enabled)
 737       intel_recreate_static_regions(intel);
 738
 739    intel->batch = intel_batchbuffer_alloc(intel);
 740
 741    intel_fbo_init(intel);
 742
 743    if (intel->ctx.Mesa_DXTn) {
 744       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 745       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 746    }
 747    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 748       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 749    }
 750    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 751                                                "texture_tiling");
 752    if (intel->use_texture_tiling &&
 753        !intel->intelScreen->kernel_exec_fencing) {
 754       fprintf(stderr, "No kernel support for execution fencing, "
 755               "disabling texture tiling");
 756       intel->use_texture_tiling = GL_FALSE;
 757    }
 758    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 759
 760    intel->prim.primitive = ~0;
 761
 762    /* Force all software fallbacks */
 763    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 764       fprintf(stderr, "disabling 3D rasterization\n");
 765       intel->no_rast = 1;
 766    }
 767
 768    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 769       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 770       intel->always_flush_batch = 1;
 771    }
 772
 773    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 774       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 775       intel->always_flush_cache = 1;
 776    }
 777
 778    /* Disable all hardware rendering (skip emitting batches and fences/waits
 779     * to the kernel)
 780     */
 781    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 782
 783    return GL_TRUE;
 784 }
 785
 786 void
 787 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 788 {
 789    struct intel_context *intel =
 790       (struct intel_context *) driContextPriv->driverPrivate;
 791
 792    assert(intel);               /* should never be null */
 793    if (intel) {
 794       GLboolean release_texture_heaps;
 795
 796       INTEL_FIREVERTICES(intel);
 797
 798       meta_destroy_metaops(&intel->meta);
 799
 800       intel->vtbl.destroy(intel);
 801
 802       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 803       _swsetup_DestroyContext(&intel->ctx);
 804       _tnl_DestroyContext(&intel->ctx);
 805       _vbo_DestroyContext(&intel->ctx);
 806
 807       _swrast_DestroyContext(&intel->ctx);
 808       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 809
 810       intel_batchbuffer_free(intel->batch);
 811       intel->batch = NULL;
 812
 813       free(intel->prim.vb);
 814       intel->prim.vb = NULL;
 815       dri_bo_unreference(intel->prim.vb_bo);
 816       intel->prim.vb_bo = NULL;
 817
 818       if (release_texture_heaps) {
 819          /* Nothing is currently done here to free texture heaps;
 820           * but we're not using the texture heap utilities, so I
 821           * rather think we shouldn't.  I've taken a look, and can't
 822           * find any private texture data hanging around anywhere, but
 823           * I'm not yet certain there isn't any at all...
 824           */
 825          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 826             fprintf(stderr, "do something to free texture heaps\n");
 827           */
 828       }
 829
 830       /* XXX In intelMakeCurrent() below, the context's static regions are
 831        * referenced inside the frame buffer; it's listed as a hack,
 832        * with a comment of "XXX FBO temporary fix-ups!", but
 833        * as long as it's there, we should release the regions here.
 834        * The do/while loop around the block is used to allow the
 835        * "continue" statements inside the block to exit the block,
 836        * to avoid many layers of "if" constructs.
 837        */
 838       do {
 839          __DRIdrawablePrivate * driDrawPriv = intel->driDrawable;
 840          struct intel_framebuffer *intel_fb;
 841          struct intel_renderbuffer *irbDepth, *irbStencil;
 842          if (!driDrawPriv) {
 843             /* We're already detached from the drawable; exit this block. */
 844             continue;
 845          }
 846          intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 847          if (!intel_fb) {
 848             /* The frame buffer is already gone; exit this block. */
 849             continue;
 850          }
 851          irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 852          irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 853
 854          /* If the regions of the frame buffer still match the regions
 855           * of the context, release them.  If they've changed somehow,
 856           * leave them alone.
 857           */
 858          if (intel_fb->color_rb[0] && intel_fb->color_rb[0]->region == intel->front_region) {
 859             intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 860          }
 861          if (intel_fb->color_rb[1] && intel_fb->color_rb[1]->region == intel->back_region) {
 862             intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 863          }
 864
 865          if (irbDepth && irbDepth->region == intel->depth_region) {
 866             intel_renderbuffer_set_region(irbDepth, NULL);
 867          }
 868          /* Usually, the stencil buffer is the same as the depth buffer;
 869           * but they're handled separately in MakeCurrent, so we'll
 870           * handle them separately here.
 871           */
 872          if (irbStencil && irbStencil->region == intel->depth_region) {
 873             intel_renderbuffer_set_region(irbStencil, NULL);
 874          }
 875       } while (0);
 876
 877       intel_region_release(&intel->front_region);
 878       intel_region_release(&intel->back_region);
 879       intel_region_release(&intel->depth_region);
 880
 881       driDestroyOptionCache(&intel->optionCache);
 882
 883       /* free the Mesa context */
 884       _mesa_free_context_data(&intel->ctx);
 885
 886       FREE(intel);
 887       driContextPriv->driverPrivate = NULL;
 888    }
 889 }
 890
 891 GLboolean
 892 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 893 {
 894    return GL_TRUE;
 895 }
 896
 897 GLboolean
 898 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 899                  __DRIdrawablePrivate * driDrawPriv,
 900                  __DRIdrawablePrivate * driReadPriv)
 901 {
 902    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 903
 904    if (driContextPriv) {
 905       struct intel_context *intel =
 906          (struct intel_context *) driContextPriv->driverPrivate;
 907       struct intel_framebuffer *intel_fb =
 908          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 909       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 910
 911       if (driContextPriv->driScreenPriv->dri2.enabled) {
 912           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 913           if (driDrawPriv != driReadPriv)
 914               intel_update_renderbuffers(driContextPriv, driReadPriv);
 915       } else {
 916           /* XXX FBO temporary fix-ups!  These are released in
 917            * intelDextroyContext(), above.  Changes here should be
 918            * reflected there.
 919            */
 920           /* if the renderbuffers don't have regions, init them from the context */
 921          struct intel_renderbuffer *irbDepth
 922             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 923          struct intel_renderbuffer *irbStencil
 924             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 925
 926          if (intel_fb->color_rb[0]) {
 927             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 928                                           intel->front_region);
 929          }
 930          if (intel_fb->color_rb[1]) {
 931             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 932                                           intel->back_region);
 933          }
 934
 935          if (irbDepth) {
 936             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 937          }
 938          if (irbStencil) {
 939             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 940          }
 941       }
 942
 943       /* set GLframebuffer size to match window, if needed */
 944       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 945
 946       if (driReadPriv != driDrawPriv) {
 947          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 948       }
 949
 950       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 951
 952       /* The drawbuffer won't always be updated by _mesa_make_current:
 953        */
 954       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 955
 956          if (intel->driReadDrawable != driReadPriv)
 957             intel->driReadDrawable = driReadPriv;
 958
 959          if (intel->driDrawable != driDrawPriv) {
 960             if (driDrawPriv->swap_interval == (unsigned)-1) {
 961                int i;
 962
 963                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 964                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 965                  : VBLANK_FLAG_NO_IRQ;
 966
 967                /* Prevent error printf if one crtc is disabled, this will
 968                 * be properly calculated in intelWindowMoved() next.
 969                 */
 970                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 971
 972                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 973                driDrawableInitVBlank(driDrawPriv);
 974                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 975
 976                for (i = 0; i < 2; i++) {
 977                   if (intel_fb->color_rb[i])
 978                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 979                }
 980             }
 981             intel->driDrawable = driDrawPriv;
 982             intelWindowMoved(intel);
 983          }
 984
 985          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 986       }
 987    }
 988    else {
 989       _mesa_make_current(NULL, NULL, NULL);
 990    }
 991
 992    return GL_TRUE;
 993 }
 994
 995 static void
 996 intelContendedLock(struct intel_context *intel, GLuint flags)
 997 {
 998    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 999    __DRIscreenPrivate *sPriv = intel->driScreen;
1000    volatile drm_i915_sarea_t *sarea = intel->sarea;
1001    int me = intel->hHWContext;
1002
1003    drmGetLock(intel->driFd, intel->hHWContext, flags);
1004
1005    if (INTEL_DEBUG & DEBUG_LOCK)
1006       _mesa_printf("%s - got contended lock\n", __progname);
1007
1008    /* If the window moved, may need to set a new cliprect now.
1009     *
1010     * NOTE: This releases and regains the hw lock, so all state
1011     * checking must be done *after* this call:
1012     */
1013    if (dPriv)
1014        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1015
1016    if (sarea && sarea->ctxOwner != me) {
1017       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1018          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1019                  sarea->ctxOwner, me);
1020       }
1021       sarea->ctxOwner = me;
1022    }
1023
1024    /* If the last consumer of the texture memory wasn't us, notify the fake
1025     * bufmgr and record the new owner.  We should have the memory shared
1026     * between contexts of a single fake bufmgr, but this will at least make
1027     * things correct for now.
1028     */
1029    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1030       sarea->texAge = intel->hHWContext;
1031       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1032       if (INTEL_DEBUG & DEBUG_BATCH)
1033          intel_decode_context_reset();
1034       if (INTEL_DEBUG & DEBUG_BUFMGR)
1035          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1036                  sarea->ctxOwner, intel->hHWContext);
1037    }
1038
1039    /* Drawable changed?
1040     */
1041    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1042        intelWindowMoved(intel);
1043        intel->lastStamp = dPriv->lastStamp;
1044    }
1045 }
1046
1047
1048 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1049
1050 /* Lock the hardware and validate our state.
1051  */
1052 void LOCK_HARDWARE( struct intel_context *intel )
1053 {
1054     __DRIdrawable *dPriv = intel->driDrawable;
1055     __DRIscreen *sPriv = intel->driScreen;
1056     char __ret = 0;
1057     struct intel_framebuffer *intel_fb = NULL;
1058     struct intel_renderbuffer *intel_rb = NULL;
1059
1060     intel->locked++;
1061     if (intel->locked >= 2)
1062        return;
1063
1064     if (!sPriv->dri2.enabled)
1065        _glthread_LOCK_MUTEX(lockMutex);
1066
1067     if (intel->driDrawable) {
1068        intel_fb = intel->driDrawable->driverPrivate;
1069
1070        if (intel_fb)
1071           intel_rb =
1072              intel_get_renderbuffer(&intel_fb->Base,
1073                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1074     }
1075
1076     if (intel_rb && dPriv->vblFlags &&
1077         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1078         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1079         drmVBlank vbl;
1080
1081         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1082
1083         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1084             vbl.request.type |= DRM_VBLANK_SECONDARY;
1085         }
1086
1087         vbl.request.sequence = intel_rb->vbl_pending;
1088         drmWaitVBlank(intel->driFd, &vbl);
1089         intel_fb->vbl_waited = vbl.reply.sequence;
1090     }
1091
1092     if (!sPriv->dri2.enabled) {
1093         DRM_CAS(intel->driHwLock, intel->hHWContext,
1094                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1095
1096         if (__ret)
1097             intelContendedLock( intel, 0 );
1098     }
1099
1100
1101     if (INTEL_DEBUG & DEBUG_LOCK)
1102       _mesa_printf("%s - locked\n", __progname);
1103 }
1104
1105
1106 /* Unlock the hardware using the global current context
1107  */
1108 void UNLOCK_HARDWARE( struct intel_context *intel )
1109 {
1110     __DRIscreen *sPriv = intel->driScreen;
1111
1112    intel->locked--;
1113    if (intel->locked > 0)
1114       return;
1115
1116    assert(intel->locked == 0);
1117
1118    if (!sPriv->dri2.enabled) {
1119       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1120       _glthread_UNLOCK_MUTEX(lockMutex);
1121    }
1122
1123    if (INTEL_DEBUG & DEBUG_LOCK)
1124       _mesa_printf("%s - unlocked\n", __progname);
1125
1126    /**
1127     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1128     * cliprects.
1129     */
1130    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1131       intel_batchbuffer_flush(intel->batch);
1132 }
1133