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

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/arrayobj.h"
  32 #include "main/extensions.h"
  33 #include "main/framebuffer.h"
  34 #include "main/imports.h"
  35 #include "main/points.h"
  36
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "drivers/common/driverfuncs.h"
  41 #include "drivers/common/meta.h"
  42
  43 #include "i830_dri.h"
  44
  45 #include "intel_chipset.h"
  46 #include "intel_buffers.h"
  47 #include "intel_tex.h"
  48 #include "intel_batchbuffer.h"
  49 #include "intel_clear.h"
  50 #include "intel_extensions.h"
  51 #include "intel_pixel.h"
  52 #include "intel_regions.h"
  53 #include "intel_buffer_objects.h"
  54 #include "intel_fbo.h"
  55 #include "intel_decode.h"
  56 #include "intel_bufmgr.h"
  57 #include "intel_screen.h"
  58 #include "intel_swapbuffers.h"
  59
  60 #include "drirenderbuffer.h"
  61 #include "vblank.h"
  62 #include "utils.h"
  63 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  64
  65
  66 #ifndef INTEL_DEBUG
  67 int INTEL_DEBUG = (0);
  68 #endif
  69
  70
  71 #define DRIVER_DATE                     "20090712 2009Q2 RC3"
  72 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  73
  74
  75 static void intel_flush(GLcontext *ctx, GLboolean needs_mi_flush);
  76
  77 static const GLubyte *
  78 intelGetString(GLcontext * ctx, GLenum name)
  79 {
  80    const struct intel_context *const intel = intel_context(ctx);
  81    const char *chipset;
  82    static char buffer[128];
  83
  84    switch (name) {
  85    case GL_VENDOR:
  86       return (GLubyte *) "Tungsten Graphics, Inc";
  87       break;
  88
  89    case GL_RENDERER:
  90       switch (intel->intelScreen->deviceID) {
  91       case PCI_CHIP_845_G:
  92          chipset = "Intel(R) 845G";
  93          break;
  94       case PCI_CHIP_I830_M:
  95          chipset = "Intel(R) 830M";
  96          break;
  97       case PCI_CHIP_I855_GM:
  98          chipset = "Intel(R) 852GM/855GM";
  99          break;
 100       case PCI_CHIP_I865_G:
 101          chipset = "Intel(R) 865G";
 102          break;
 103       case PCI_CHIP_I915_G:
 104          chipset = "Intel(R) 915G";
 105          break;
 106       case PCI_CHIP_E7221_G:
 107          chipset = "Intel (R) E7221G (i915)";
 108          break;
 109       case PCI_CHIP_I915_GM:
 110          chipset = "Intel(R) 915GM";
 111          break;
 112       case PCI_CHIP_I945_G:
 113          chipset = "Intel(R) 945G";
 114          break;
 115       case PCI_CHIP_I945_GM:
 116          chipset = "Intel(R) 945GM";
 117          break;
 118       case PCI_CHIP_I945_GME:
 119          chipset = "Intel(R) 945GME";
 120          break;
 121       case PCI_CHIP_G33_G:
 122          chipset = "Intel(R) G33";
 123          break;
 124       case PCI_CHIP_Q35_G:
 125          chipset = "Intel(R) Q35";
 126          break;
 127       case PCI_CHIP_Q33_G:
 128          chipset = "Intel(R) Q33";
 129          break;
 130       case PCI_CHIP_IGD_GM:
 131       case PCI_CHIP_IGD_G:
 132          chipset = "Intel(R) IGD";
 133          break;
 134       case PCI_CHIP_I965_Q:
 135          chipset = "Intel(R) 965Q";
 136          break;
 137       case PCI_CHIP_I965_G:
 138       case PCI_CHIP_I965_G_1:
 139          chipset = "Intel(R) 965G";
 140          break;
 141       case PCI_CHIP_I946_GZ:
 142          chipset = "Intel(R) 946GZ";
 143          break;
 144       case PCI_CHIP_I965_GM:
 145          chipset = "Intel(R) 965GM";
 146          break;
 147       case PCI_CHIP_I965_GME:
 148          chipset = "Intel(R) 965GME/GLE";
 149          break;
 150       case PCI_CHIP_GM45_GM:
 151          chipset = "Mobile Intel® GM45 Express Chipset";
 152          break;
 153       case PCI_CHIP_IGD_E_G:
 154          chipset = "Intel(R) Integrated Graphics Device";
 155          break;
 156       case PCI_CHIP_G45_G:
 157          chipset = "Intel(R) G45/G43";
 158          break;
 159       case PCI_CHIP_Q45_G:
 160          chipset = "Intel(R) Q45/Q43";
 161          break;
 162       case PCI_CHIP_G41_G:
 163          chipset = "Intel(R) G41";
 164          break;
 165       case PCI_CHIP_B43_G:
 166          chipset = "Intel(R) B43";
 167          break;
 168       case PCI_CHIP_ILD_G:
 169          chipset = "Intel(R) IGDNG_D";
 170          break;
 171       case PCI_CHIP_ILM_G:
 172          chipset = "Intel(R) IGDNG_M";
 173          break;
 174       default:
 175          chipset = "Unknown Intel Chipset";
 176          break;
 177       }
 178
 179       (void) driGetRendererString(buffer, chipset,
 180                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 181                                   0);
 182       return (GLubyte *) buffer;
 183
 184    default:
 185       return NULL;
 186    }
 187 }
 188
 189 static unsigned
 190 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 191 {
 192    switch (rb->Base._ActualFormat) {
 193    case GL_RGB5:
 194    case GL_DEPTH_COMPONENT16:
 195       return 16;
 196    case GL_RGB8:
 197    case GL_RGBA8:
 198    case GL_DEPTH_COMPONENT24:
 199    case GL_DEPTH24_STENCIL8_EXT:
 200    case GL_STENCIL_INDEX8_EXT:
 201       return 32;
 202    default:
 203       return 0;
 204    }
 205 }
 206
 207 void
 208 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 209 {
 210    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 211    struct intel_renderbuffer *rb;
 212    struct intel_region *region, *depth_region;
 213    struct intel_context *intel = context->driverPrivate;
 214    __DRIbuffer *buffers = NULL;
 215    __DRIscreen *screen;
 216    int i, count;
 217    unsigned int attachments[10];
 218    uint32_t name;
 219    const char *region_name;
 220
 221    if (INTEL_DEBUG & DEBUG_DRI)
 222       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 223
 224    screen = intel->intelScreen->driScrnPriv;
 225
 226    if (screen->dri2.loader
 227        && (screen->dri2.loader->base.version > 2)
 228        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 229       struct intel_renderbuffer *depth_rb;
 230       struct intel_renderbuffer *stencil_rb;
 231
 232       i = 0;
 233       if ((intel->is_front_buffer_rendering ||
 234            intel->is_front_buffer_reading ||
 235            !intel_fb->color_rb[1])
 236            && intel_fb->color_rb[0]) {
 237          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 238          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 239       }
 240
 241       if (intel_fb->color_rb[1]) {
 242          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 243          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 244       }
 245
 246       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 247       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 248
 249       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 250          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 251          attachments[i++] = intel_bits_per_pixel(depth_rb);
 252       } else if (depth_rb != NULL) {
 253          attachments[i++] = __DRI_BUFFER_DEPTH;
 254          attachments[i++] = intel_bits_per_pixel(depth_rb);
 255       } else if (stencil_rb != NULL) {
 256          attachments[i++] = __DRI_BUFFER_STENCIL;
 257          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 258       }
 259
 260       buffers =
 261          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 262                                                       &drawable->w,
 263                                                       &drawable->h,
 264                                                       attachments, i / 2,
 265                                                       &count,
 266                                                       drawable->loaderPrivate);
 267    } else if (screen->dri2.loader) {
 268       i = 0;
 269       if (intel_fb->color_rb[0])
 270          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 271       if (intel_fb->color_rb[1])
 272          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 273       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 274          attachments[i++] = __DRI_BUFFER_DEPTH;
 275       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 276          attachments[i++] = __DRI_BUFFER_STENCIL;
 277
 278       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 279                                                    &drawable->w,
 280                                                    &drawable->h,
 281                                                    attachments, i,
 282                                                    &count,
 283                                                    drawable->loaderPrivate);
 284    }
 285
 286    if (buffers == NULL)
 287       return;
 288
 289    drawable->x = 0;
 290    drawable->y = 0;
 291    drawable->backX = 0;
 292    drawable->backY = 0;
 293    drawable->numClipRects = 1;
 294    drawable->pClipRects[0].x1 = 0;
 295    drawable->pClipRects[0].y1 = 0;
 296    drawable->pClipRects[0].x2 = drawable->w;
 297    drawable->pClipRects[0].y2 = drawable->h;
 298    drawable->numBackClipRects = 1;
 299    drawable->pBackClipRects[0].x1 = 0;
 300    drawable->pBackClipRects[0].y1 = 0;
 301    drawable->pBackClipRects[0].x2 = drawable->w;
 302    drawable->pBackClipRects[0].y2 = drawable->h;
 303
 304    depth_region = NULL;
 305    for (i = 0; i < count; i++) {
 306        switch (buffers[i].attachment) {
 307        case __DRI_BUFFER_FRONT_LEFT:
 308            rb = intel_fb->color_rb[0];
 309            region_name = "dri2 front buffer";
 310            break;
 311
 312        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 313            rb = intel_fb->color_rb[0];
 314            region_name = "dri2 fake front buffer";
 315            break;
 316
 317        case __DRI_BUFFER_BACK_LEFT:
 318            rb = intel_fb->color_rb[1];
 319            region_name = "dri2 back buffer";
 320            break;
 321
 322        case __DRI_BUFFER_DEPTH:
 323            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 324            region_name = "dri2 depth buffer";
 325            break;
 326
 327        case __DRI_BUFFER_DEPTH_STENCIL:
 328            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 329            region_name = "dri2 depth / stencil buffer";
 330            break;
 331
 332        case __DRI_BUFFER_STENCIL:
 333            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 334            region_name = "dri2 stencil buffer";
 335            break;
 336
 337        case __DRI_BUFFER_ACCUM:
 338        default:
 339            fprintf(stderr,
 340                    "unhandled buffer attach event, attacment type %d\n",
 341                    buffers[i].attachment);
 342            return;
 343        }
 344
 345        if (rb == NULL)
 346           continue;
 347
 348        if (rb->region) {
 349           dri_bo_flink(rb->region->buffer, &name);
 350           if (name == buffers[i].name)
 351              continue;
 352        }
 353
 354        if (INTEL_DEBUG & DEBUG_DRI)
 355           fprintf(stderr,
 356                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 357                   buffers[i].name, buffers[i].attachment,
 358                   buffers[i].cpp, buffers[i].pitch);
 359
 360        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 361           if (INTEL_DEBUG & DEBUG_DRI)
 362              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 363           intel_region_reference(&region, depth_region);
 364        }
 365        else
 366           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 367                                                  drawable->w,
 368                                                  drawable->h,
 369                                                  buffers[i].pitch / buffers[i].cpp,
 370                                                  buffers[i].name,
 371                                                  region_name);
 372
 373        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 374           depth_region = region;
 375
 376        intel_renderbuffer_set_region(rb, region);
 377        intel_region_release(&region);
 378
 379        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 380           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 381           if (rb != NULL) {
 382              struct intel_region *stencil_region = NULL;
 383
 384              if (rb->region) {
 385                 dri_bo_flink(rb->region->buffer, &name);
 386                 if (name == buffers[i].name)
 387                    continue;
 388              }
 389
 390              intel_region_reference(&stencil_region, region);
 391              intel_renderbuffer_set_region(rb, stencil_region);
 392              intel_region_release(&stencil_region);
 393           }
 394        }
 395    }
 396
 397    driUpdateFramebufferSize(&intel->ctx, drawable);
 398 }
 399
 400 void
 401 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 402 {
 403     struct intel_context *intel = intel_context(ctx);
 404     __DRIcontext *driContext = intel->driContext;
 405     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 406                          GLsizei w, GLsizei h);
 407
 408     if (!driContext->driScreenPriv->dri2.enabled)
 409         return;
 410
 411     if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 412        /* If we're rendering to the fake front buffer, make sure all the pending
 413         * drawing has landed on the real front buffer.  Otherwise when we
 414         * eventually get to DRI2GetBuffersWithFormat the stale real front
 415         * buffer contents will get copied to the new fake front buffer.
 416         */
 417        if (intel->is_front_buffer_rendering) {
 418           intel_flush(ctx, GL_FALSE);
 419        }
 420
 421        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 422        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 423           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 424     }
 425
 426     old_viewport = ctx->Driver.Viewport;
 427     ctx->Driver.Viewport = NULL;
 428     intel->driDrawable = driContext->driDrawablePriv;
 429     intelWindowMoved(intel);
 430     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 431     ctx->Driver.Viewport = old_viewport;
 432 }
 433
 434
 435 static const struct dri_debug_control debug_control[] = {
 436    { "tex",   DEBUG_TEXTURE},
 437    { "state", DEBUG_STATE},
 438    { "ioctl", DEBUG_IOCTL},
 439    { "blit",  DEBUG_BLIT},
 440    { "mip",   DEBUG_MIPTREE},
 441    { "fall",  DEBUG_FALLBACKS},
 442    { "verb",  DEBUG_VERBOSE},
 443    { "bat",   DEBUG_BATCH},
 444    { "pix",   DEBUG_PIXEL},
 445    { "buf",   DEBUG_BUFMGR},
 446    { "reg",   DEBUG_REGION},
 447    { "fbo",   DEBUG_FBO},
 448    { "lock",  DEBUG_LOCK},
 449    { "sync",  DEBUG_SYNC},
 450    { "prim",  DEBUG_PRIMS },
 451    { "vert",  DEBUG_VERTS },
 452    { "dri",   DEBUG_DRI },
 453    { "dma",   DEBUG_DMA },
 454    { "san",   DEBUG_SANITY },
 455    { "sleep", DEBUG_SLEEP },
 456    { "stats", DEBUG_STATS },
 457    { "tile",  DEBUG_TILE },
 458    { "sing",  DEBUG_SINGLE_THREAD },
 459    { "thre",  DEBUG_SINGLE_THREAD },
 460    { "wm",    DEBUG_WM },
 461    { "urb",   DEBUG_URB },
 462    { "vs",    DEBUG_VS },
 463    { NULL,    0 }
 464 };
 465
 466
 467 static void
 468 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 469 {
 470     struct intel_context *intel = intel_context(ctx);
 471
 472    _swrast_InvalidateState(ctx, new_state);
 473    _swsetup_InvalidateState(ctx, new_state);
 474    _vbo_InvalidateState(ctx, new_state);
 475    _tnl_InvalidateState(ctx, new_state);
 476    _tnl_invalidate_vertex_state(ctx, new_state);
 477
 478    intel->NewGLState |= new_state;
 479
 480    if (intel->vtbl.invalidate_state)
 481       intel->vtbl.invalidate_state( intel, new_state );
 482 }
 483
 484 static void
 485 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 486 {
 487    struct intel_context *intel = intel_context(ctx);
 488
 489    if (intel->Fallback)
 490       _swrast_flush(ctx);
 491
 492    if (!IS_965(intel->intelScreen->deviceID))
 493       INTEL_FIREVERTICES(intel);
 494
 495    /* Emit a flush so that any frontbuffer rendering that might have occurred
 496     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 497     * a flush for us.
 498     */
 499    if (needs_mi_flush)
 500       intel_batchbuffer_emit_mi_flush(intel->batch);
 501
 502    if (intel->batch->map != intel->batch->ptr)
 503       intel_batchbuffer_flush(intel->batch);
 504
 505    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 506       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 507
 508       if (screen->dri2.loader &&
 509           (screen->dri2.loader->base.version >= 2)
 510           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 511           intel->driDrawable && intel->driDrawable->loaderPrivate) {
 512          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 513                                                   intel->driDrawable->loaderPrivate);
 514
 515          /* Only clear the dirty bit if front-buffer rendering is no longer
 516           * enabled.  This is done so that the dirty bit can only be set in
 517           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 518           * each of N places that do rendering.  This has worse performances,
 519           * but it is much easier to get correct.
 520           */
 521          if (!intel->is_front_buffer_rendering) {
 522             intel->front_buffer_dirty = GL_FALSE;
 523          }
 524       }
 525    }
 526 }
 527
 528 void
 529 intelFlush(GLcontext * ctx)
 530 {
 531    intel_flush(ctx, GL_FALSE);
 532 }
 533
 534 static void
 535 intel_glFlush(GLcontext *ctx)
 536 {
 537    struct intel_context *intel = intel_context(ctx);
 538
 539    intel_flush(ctx, GL_TRUE);
 540
 541    /* We're using glFlush as an indicator that a frame is done, which is
 542     * what DRI2 does before calling SwapBuffers (and means we should catch
 543     * people doing front-buffer rendering, as well)..
 544     *
 545     * Wait for the swapbuffers before the one we just emitted, so we don't
 546     * get too many swaps outstanding for apps that are GPU-heavy but not
 547     * CPU-heavy.
 548     *
 549     * Unfortunately, we don't have a handle to the batch containing the swap,
 550     * and getting our hands on that doesn't seem worth it, so we just us the
 551     * first batch we emitted after the last swap.
 552     */
 553    if (intel->first_post_swapbuffers_batch != NULL) {
 554       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 555       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 556       intel->first_post_swapbuffers_batch = NULL;
 557    }
 558 }
 559
 560 void
 561 intelFinish(GLcontext * ctx)
 562 {
 563    struct gl_framebuffer *fb = ctx->DrawBuffer;
 564    int i;
 565
 566    intelFlush(ctx);
 567
 568    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 569        struct intel_renderbuffer *irb;
 570
 571        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 572
 573        if (irb && irb->region)
 574           dri_bo_wait_rendering(irb->region->buffer);
 575    }
 576    if (fb->_DepthBuffer) {
 577       /* XXX: Wait on buffer idle */
 578    }
 579 }
 580
 581 void
 582 intelInitDriverFunctions(struct dd_function_table *functions)
 583 {
 584    _mesa_init_driver_functions(functions);
 585
 586    functions->Flush = intel_glFlush;
 587    functions->Finish = intelFinish;
 588    functions->GetString = intelGetString;
 589    functions->UpdateState = intelInvalidateState;
 590
 591    functions->CopyColorTable = _swrast_CopyColorTable;
 592    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 593    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 594    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 595
 596    intelInitTextureFuncs(functions);
 597    intelInitTextureImageFuncs(functions);
 598    intelInitTextureSubImageFuncs(functions);
 599    intelInitTextureCopyImageFuncs(functions);
 600    intelInitStateFuncs(functions);
 601    intelInitClearFuncs(functions);
 602    intelInitBufferFuncs(functions);
 603    intelInitPixelFuncs(functions);
 604    intelInitBufferObjectFuncs(functions);
 605    intel_init_syncobj_functions(functions);
 606 }
 607
 608
 609 GLboolean
 610 intelInitContext(struct intel_context *intel,
 611                  const __GLcontextModes * mesaVis,
 612                  __DRIcontextPrivate * driContextPriv,
 613                  void *sharedContextPrivate,
 614                  struct dd_function_table *functions)
 615 {
 616    GLcontext *ctx = &intel->ctx;
 617    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 618    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 619    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 620    int fthrottle_mode;
 621
 622    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 623                                  functions, (void *) intel)) {
 624       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 625       return GL_FALSE;
 626    }
 627
 628    driContextPriv->driverPrivate = intel;
 629    intel->intelScreen = intelScreen;
 630    intel->driScreen = sPriv;
 631    intel->sarea = intelScreen->sarea;
 632    intel->driContext = driContextPriv;
 633
 634    /* Dri stuff */
 635    intel->hHWContext = driContextPriv->hHWContext;
 636    intel->driFd = sPriv->fd;
 637    intel->driHwLock = sPriv->lock;
 638
 639    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 640                        intel->driScreen->myNum,
 641                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 642    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 643       intel->maxBatchSize = 4096;
 644    else
 645       intel->maxBatchSize = BATCH_SZ;
 646
 647    intel->bufmgr = intelScreen->bufmgr;
 648
 649    if (0) /* for debug */
 650       drm_intel_bufmgr_set_debug(intel->bufmgr, 1);
 651
 652    intel->ttm = intelScreen->ttm;
 653    if (intel->ttm) {
 654       int bo_reuse_mode;
 655
 656       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 657       switch (bo_reuse_mode) {
 658       case DRI_CONF_BO_REUSE_DISABLED:
 659          break;
 660       case DRI_CONF_BO_REUSE_ALL:
 661          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 662          break;
 663       }
 664    }
 665
 666    /* This doesn't yet catch all non-conformant rendering, but it's a
 667     * start.
 668     */
 669    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 670       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 671       if (value > 0) {
 672          intel->conformance_mode = value;
 673       }
 674       else {
 675          intel->conformance_mode = 1;
 676       }
 677    }
 678
 679    if (intel->conformance_mode > 0) {
 680       ctx->Const.MinLineWidth = 1.0;
 681       ctx->Const.MinLineWidthAA = 1.0;
 682       ctx->Const.MaxLineWidth = 1.0;
 683       ctx->Const.MaxLineWidthAA = 1.0;
 684       ctx->Const.LineWidthGranularity = 1.0;
 685    }
 686    else {
 687       ctx->Const.MinLineWidth = 1.0;
 688       ctx->Const.MinLineWidthAA = 1.0;
 689       ctx->Const.MaxLineWidth = 5.0;
 690       ctx->Const.MaxLineWidthAA = 5.0;
 691       ctx->Const.LineWidthGranularity = 0.5;
 692    }
 693
 694    ctx->Const.MinPointSize = 1.0;
 695    ctx->Const.MinPointSizeAA = 1.0;
 696    ctx->Const.MaxPointSize = 255.0;
 697    ctx->Const.MaxPointSizeAA = 3.0;
 698    ctx->Const.PointSizeGranularity = 1.0;
 699
 700    /* reinitialize the context point state.
 701     * It depend on constants in __GLcontextRec::Const
 702     */
 703    _mesa_init_point(ctx);
 704
 705    meta_init_metaops(ctx, &intel->meta);
 706    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 707    if (IS_965(intelScreen->deviceID)) {
 708       if (MAX_WIDTH > 8192)
 709          ctx->Const.MaxRenderbufferSize = 8192;
 710    } else {
 711       if (MAX_WIDTH > 2048)
 712          ctx->Const.MaxRenderbufferSize = 2048;
 713    }
 714
 715    /* Initialize the software rasterizer and helper modules. */
 716    _swrast_CreateContext(ctx);
 717    _vbo_CreateContext(ctx);
 718    _tnl_CreateContext(ctx);
 719    _swsetup_CreateContext(ctx);
 720
 721    /* Configure swrast to match hardware characteristics: */
 722    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 723    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 724
 725    _mesa_meta_init(ctx);
 726
 727    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 728    intel->hw_stipple = 1;
 729
 730    /* XXX FBO: this doesn't seem to be used anywhere */
 731    switch (mesaVis->depthBits) {
 732    case 0:                     /* what to do in this case? */
 733    case 16:
 734       intel->polygon_offset_scale = 1.0;
 735       break;
 736    case 24:
 737       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 738       break;
 739    default:
 740       assert(0);
 741       break;
 742    }
 743
 744    if (IS_965(intelScreen->deviceID))
 745       intel->polygon_offset_scale /= 0xffff;
 746
 747    intel->RenderIndex = ~0;
 748
 749    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 750    intel->irqsEmitted = 0;
 751
 752    intel->do_irqs = (intel->intelScreen->irq_active &&
 753                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 754
 755    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 756
 757    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 758       _mesa_printf("IRQs not active.  Exiting\n");
 759       exit(1);
 760    }
 761
 762    intelInitExtensions(ctx, GL_FALSE);
 763
 764    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 765    if (INTEL_DEBUG & DEBUG_BUFMGR)
 766       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 767
 768    if (!sPriv->dri2.enabled)
 769       intel_recreate_static_regions(intel);
 770
 771    intel->batch = intel_batchbuffer_alloc(intel);
 772
 773    intel_fbo_init(intel);
 774
 775    if (intel->ctx.Mesa_DXTn) {
 776       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 777       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 778    }
 779    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 780       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 781    }
 782    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 783                                                "texture_tiling");
 784    if (intel->use_texture_tiling &&
 785        !intel->intelScreen->kernel_exec_fencing) {
 786       fprintf(stderr, "No kernel support for execution fencing, "
 787               "disabling texture tiling\n");
 788       intel->use_texture_tiling = GL_FALSE;
 789    }
 790    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 791
 792    intel->prim.primitive = ~0;
 793
 794    /* Force all software fallbacks */
 795    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 796       fprintf(stderr, "disabling 3D rasterization\n");
 797       intel->no_rast = 1;
 798    }
 799
 800    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 801       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 802       intel->always_flush_batch = 1;
 803    }
 804
 805    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 806       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 807       intel->always_flush_cache = 1;
 808    }
 809
 810    /* Disable all hardware rendering (skip emitting batches and fences/waits
 811     * to the kernel)
 812     */
 813    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 814
 815    return GL_TRUE;
 816 }
 817
 818 void
 819 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 820 {
 821    struct intel_context *intel =
 822       (struct intel_context *) driContextPriv->driverPrivate;
 823
 824    assert(intel);               /* should never be null */
 825    if (intel) {
 826       GLboolean release_texture_heaps;
 827
 828       INTEL_FIREVERTICES(intel);
 829
 830       _mesa_meta_free(&intel->ctx);
 831
 832       meta_destroy_metaops(&intel->meta);
 833
 834       intel->vtbl.destroy(intel);
 835
 836       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 837       _swsetup_DestroyContext(&intel->ctx);
 838       _tnl_DestroyContext(&intel->ctx);
 839       _vbo_DestroyContext(&intel->ctx);
 840
 841       _swrast_DestroyContext(&intel->ctx);
 842       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 843
 844       intel_batchbuffer_free(intel->batch);
 845       intel->batch = NULL;
 846
 847       free(intel->prim.vb);
 848       intel->prim.vb = NULL;
 849       dri_bo_unreference(intel->prim.vb_bo);
 850       intel->prim.vb_bo = NULL;
 851       dri_bo_unreference(intel->first_post_swapbuffers_batch);
 852       intel->first_post_swapbuffers_batch = NULL;
 853
 854       if (release_texture_heaps) {
 855          /* Nothing is currently done here to free texture heaps;
 856           * but we're not using the texture heap utilities, so I
 857           * rather think we shouldn't.  I've taken a look, and can't
 858           * find any private texture data hanging around anywhere, but
 859           * I'm not yet certain there isn't any at all...
 860           */
 861          /* if (INTEL_DEBUG & DEBUG_TEXTURE)
 862             fprintf(stderr, "do something to free texture heaps\n");
 863           */
 864       }
 865
 866       /* XXX In intelMakeCurrent() below, the context's static regions are
 867        * referenced inside the frame buffer; it's listed as a hack,
 868        * with a comment of "XXX FBO temporary fix-ups!", but
 869        * as long as it's there, we should release the regions here.
 870        * The do/while loop around the block is used to allow the
 871        * "continue" statements inside the block to exit the block,
 872        * to avoid many layers of "if" constructs.
 873        */
 874       do {
 875          __DRIdrawablePrivate * driDrawPriv = intel->driDrawable;
 876          struct intel_framebuffer *intel_fb;
 877          struct intel_renderbuffer *irbDepth, *irbStencil;
 878          if (!driDrawPriv) {
 879             /* We're already detached from the drawable; exit this block. */
 880             continue;
 881          }
 882          intel_fb = (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 883          if (!intel_fb) {
 884             /* The frame buffer is already gone; exit this block. */
 885             continue;
 886          }
 887          irbDepth = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 888          irbStencil = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 889
 890          /* If the regions of the frame buffer still match the regions
 891           * of the context, release them.  If they've changed somehow,
 892           * leave them alone.
 893           */
 894          if (intel_fb->color_rb[0] && intel_fb->color_rb[0]->region == intel->front_region) {
 895             intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 896          }
 897          if (intel_fb->color_rb[1] && intel_fb->color_rb[1]->region == intel->back_region) {
 898             intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 899          }
 900
 901          if (irbDepth && irbDepth->region == intel->depth_region) {
 902             intel_renderbuffer_set_region(irbDepth, NULL);
 903          }
 904          /* Usually, the stencil buffer is the same as the depth buffer;
 905           * but they're handled separately in MakeCurrent, so we'll
 906           * handle them separately here.
 907           */
 908          if (irbStencil && irbStencil->region == intel->depth_region) {
 909             intel_renderbuffer_set_region(irbStencil, NULL);
 910          }
 911       } while (0);
 912
 913       intel_region_release(&intel->front_region);
 914       intel_region_release(&intel->back_region);
 915       intel_region_release(&intel->depth_region);
 916
 917       driDestroyOptionCache(&intel->optionCache);
 918
 919       /* free the Mesa context */
 920       _mesa_free_context_data(&intel->ctx);
 921
 922       FREE(intel);
 923       driContextPriv->driverPrivate = NULL;
 924    }
 925 }
 926
 927 GLboolean
 928 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 929 {
 930    struct intel_context *intel =
 931       (struct intel_context *) driContextPriv->driverPrivate;
 932
 933    /* Deassociate the context with the drawables.
 934     */
 935    intel->driDrawable = NULL;
 936    intel->driReadDrawable = NULL;
 937
 938    return GL_TRUE;
 939 }
 940
 941 GLboolean
 942 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 943                  __DRIdrawablePrivate * driDrawPriv,
 944                  __DRIdrawablePrivate * driReadPriv)
 945 {
 946    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 947    struct intel_context *intel;
 948    GET_CURRENT_CONTEXT(curCtx);
 949
 950    if (driContextPriv)
 951       intel = (struct intel_context *) driContextPriv->driverPrivate;
 952    else
 953       intel = NULL;
 954
 955    /* According to the glXMakeCurrent() man page: "Pending commands to
 956     * the previous context, if any, are flushed before it is released."
 957     * But only flush if we're actually changing contexts.
 958     */
 959    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 960       _mesa_flush(curCtx);
 961    }
 962
 963    if (driContextPriv) {
 964       struct intel_framebuffer *intel_fb =
 965          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 966       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 967
 968       if (driContextPriv->driScreenPriv->dri2.enabled) {
 969           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 970           if (driDrawPriv != driReadPriv)
 971               intel_update_renderbuffers(driContextPriv, driReadPriv);
 972       } else {
 973           /* XXX FBO temporary fix-ups!  These are released in
 974            * intelDextroyContext(), above.  Changes here should be
 975            * reflected there.
 976            */
 977           /* if the renderbuffers don't have regions, init them from the context */
 978          struct intel_renderbuffer *irbDepth
 979             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 980          struct intel_renderbuffer *irbStencil
 981             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 982
 983          if (intel_fb->color_rb[0]) {
 984             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 985                                           intel->front_region);
 986          }
 987          if (intel_fb->color_rb[1]) {
 988             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 989                                           intel->back_region);
 990          }
 991
 992          if (irbDepth) {
 993             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 994          }
 995          if (irbStencil) {
 996             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 997          }
 998       }
 999
1000       /* set GLframebuffer size to match window, if needed */
1001       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
1002
1003       if (driReadPriv != driDrawPriv) {
1004          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
1005       }
1006
1007       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
1008
1009       intel->driReadDrawable = driReadPriv;
1010
1011       if (intel->driDrawable != driDrawPriv) {
1012          if (driDrawPriv->swap_interval == (unsigned)-1) {
1013             int i;
1014
1015             driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
1016                ? driGetDefaultVBlankFlags(&intel->optionCache)
1017                : VBLANK_FLAG_NO_IRQ;
1018
1019             /* Prevent error printf if one crtc is disabled, this will
1020              * be properly calculated in intelWindowMoved() next.
1021              */
1022             driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
1023
1024             (*psp->systemTime->getUST) (&intel_fb->swap_ust);
1025             driDrawableInitVBlank(driDrawPriv);
1026             intel_fb->vbl_waited = driDrawPriv->vblSeq;
1027
1028             for (i = 0; i < 2; i++) {
1029                if (intel_fb->color_rb[i])
1030                   intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
1031             }
1032          }
1033          intel->driDrawable = driDrawPriv;
1034          intelWindowMoved(intel);
1035       }
1036
1037       intel_draw_buffer(&intel->ctx, &intel_fb->Base);
1038    }
1039    else {
1040       _mesa_make_current(NULL, NULL, NULL);
1041    }
1042
1043    return GL_TRUE;
1044 }
1045
1046 static void
1047 intelContendedLock(struct intel_context *intel, GLuint flags)
1048 {
1049    __DRIdrawablePrivate *dPriv = intel->driDrawable;
1050    __DRIscreenPrivate *sPriv = intel->driScreen;
1051    volatile drm_i915_sarea_t *sarea = intel->sarea;
1052    int me = intel->hHWContext;
1053
1054    drmGetLock(intel->driFd, intel->hHWContext, flags);
1055
1056    if (INTEL_DEBUG & DEBUG_LOCK)
1057       _mesa_printf("%s - got contended lock\n", __progname);
1058
1059    /* If the window moved, may need to set a new cliprect now.
1060     *
1061     * NOTE: This releases and regains the hw lock, so all state
1062     * checking must be done *after* this call:
1063     */
1064    if (dPriv)
1065        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1066
1067    if (sarea && sarea->ctxOwner != me) {
1068       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1069          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1070                  sarea->ctxOwner, me);
1071       }
1072       sarea->ctxOwner = me;
1073    }
1074
1075    /* If the last consumer of the texture memory wasn't us, notify the fake
1076     * bufmgr and record the new owner.  We should have the memory shared
1077     * between contexts of a single fake bufmgr, but this will at least make
1078     * things correct for now.
1079     */
1080    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1081       sarea->texAge = intel->hHWContext;
1082       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1083       if (INTEL_DEBUG & DEBUG_BATCH)
1084          intel_decode_context_reset();
1085       if (INTEL_DEBUG & DEBUG_BUFMGR)
1086          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1087                  sarea->ctxOwner, intel->hHWContext);
1088    }
1089
1090    /* Drawable changed?
1091     */
1092    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1093        intelWindowMoved(intel);
1094        intel->lastStamp = dPriv->lastStamp;
1095    }
1096 }
1097
1098
1099 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1100
1101 /* Lock the hardware and validate our state.
1102  */
1103 void LOCK_HARDWARE( struct intel_context *intel )
1104 {
1105     __DRIdrawable *dPriv = intel->driDrawable;
1106     __DRIscreen *sPriv = intel->driScreen;
1107     char __ret = 0;
1108     struct intel_framebuffer *intel_fb = NULL;
1109     struct intel_renderbuffer *intel_rb = NULL;
1110
1111     intel->locked++;
1112     if (intel->locked >= 2)
1113        return;
1114
1115     if (!sPriv->dri2.enabled)
1116        _glthread_LOCK_MUTEX(lockMutex);
1117
1118     if (intel->driDrawable) {
1119        intel_fb = intel->driDrawable->driverPrivate;
1120
1121        if (intel_fb)
1122           intel_rb =
1123              intel_get_renderbuffer(&intel_fb->Base,
1124                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1125     }
1126
1127     if (intel_rb && dPriv->vblFlags &&
1128         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1129         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1130         drmVBlank vbl;
1131
1132         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1133
1134         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1135             vbl.request.type |= DRM_VBLANK_SECONDARY;
1136         }
1137
1138         vbl.request.sequence = intel_rb->vbl_pending;
1139         drmWaitVBlank(intel->driFd, &vbl);
1140         intel_fb->vbl_waited = vbl.reply.sequence;
1141     }
1142
1143     if (!sPriv->dri2.enabled) {
1144         DRM_CAS(intel->driHwLock, intel->hHWContext,
1145                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1146
1147         if (__ret)
1148             intelContendedLock( intel, 0 );
1149     }
1150
1151
1152     if (INTEL_DEBUG & DEBUG_LOCK)
1153       _mesa_printf("%s - locked\n", __progname);
1154 }
1155
1156
1157 /* Unlock the hardware using the global current context
1158  */
1159 void UNLOCK_HARDWARE( struct intel_context *intel )
1160 {
1161     __DRIscreen *sPriv = intel->driScreen;
1162
1163    intel->locked--;
1164    if (intel->locked > 0)
1165       return;
1166
1167    assert(intel->locked == 0);
1168
1169    if (!sPriv->dri2.enabled) {
1170       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1171       _glthread_UNLOCK_MUTEX(lockMutex);
1172    }
1173
1174    if (INTEL_DEBUG & DEBUG_LOCK)
1175       _mesa_printf("%s - unlocked\n", __progname);
1176
1177    /**
1178     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1179     * cliprects.
1180     */
1181    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1182       intel_batchbuffer_flush(intel->batch);
1183 }
1184