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/extensions.h"
  32 #include "main/fbobject.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 "intel_chipset.h"
  44 #include "intel_buffers.h"
  45 #include "intel_tex.h"
  46 #include "intel_batchbuffer.h"
  47 #include "intel_clear.h"
  48 #include "intel_extensions.h"
  49 #include "intel_pixel.h"
  50 #include "intel_regions.h"
  51 #include "intel_buffer_objects.h"
  52 #include "intel_fbo.h"
  53 #include "intel_bufmgr.h"
  54 #include "intel_screen.h"
  55
  56 #include "drirenderbuffer.h"
  57 #include "utils.h"
  58
  59
  60 #ifndef INTEL_DEBUG
  61 int INTEL_DEBUG = (0);
  62 #endif
  63
  64
  65 #define DRIVER_DATE                     "20100330 DEVELOPMENT"
  66 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  67
  68
  69 static const GLubyte *
  70 intelGetString(struct gl_context * ctx, GLenum name)
  71 {
  72    const struct intel_context *const intel = intel_context(ctx);
  73    const char *chipset;
  74    static char buffer[128];
  75
  76    switch (name) {
  77    case GL_VENDOR:
  78       return (GLubyte *) "Tungsten Graphics, Inc";
  79       break;
  80
  81    case GL_RENDERER:
  82       switch (intel->intelScreen->deviceID) {
  83       case PCI_CHIP_845_G:
  84          chipset = "Intel(R) 845G";
  85          break;
  86       case PCI_CHIP_I830_M:
  87          chipset = "Intel(R) 830M";
  88          break;
  89       case PCI_CHIP_I855_GM:
  90          chipset = "Intel(R) 852GM/855GM";
  91          break;
  92       case PCI_CHIP_I865_G:
  93          chipset = "Intel(R) 865G";
  94          break;
  95       case PCI_CHIP_I915_G:
  96          chipset = "Intel(R) 915G";
  97          break;
  98       case PCI_CHIP_E7221_G:
  99          chipset = "Intel (R) E7221G (i915)";
 100          break;
 101       case PCI_CHIP_I915_GM:
 102          chipset = "Intel(R) 915GM";
 103          break;
 104       case PCI_CHIP_I945_G:
 105          chipset = "Intel(R) 945G";
 106          break;
 107       case PCI_CHIP_I945_GM:
 108          chipset = "Intel(R) 945GM";
 109          break;
 110       case PCI_CHIP_I945_GME:
 111          chipset = "Intel(R) 945GME";
 112          break;
 113       case PCI_CHIP_G33_G:
 114          chipset = "Intel(R) G33";
 115          break;
 116       case PCI_CHIP_Q35_G:
 117          chipset = "Intel(R) Q35";
 118          break;
 119       case PCI_CHIP_Q33_G:
 120          chipset = "Intel(R) Q33";
 121          break;
 122       case PCI_CHIP_IGD_GM:
 123       case PCI_CHIP_IGD_G:
 124          chipset = "Intel(R) IGD";
 125          break;
 126       case PCI_CHIP_I965_Q:
 127          chipset = "Intel(R) 965Q";
 128          break;
 129       case PCI_CHIP_I965_G:
 130       case PCI_CHIP_I965_G_1:
 131          chipset = "Intel(R) 965G";
 132          break;
 133       case PCI_CHIP_I946_GZ:
 134          chipset = "Intel(R) 946GZ";
 135          break;
 136       case PCI_CHIP_I965_GM:
 137          chipset = "Intel(R) 965GM";
 138          break;
 139       case PCI_CHIP_I965_GME:
 140          chipset = "Intel(R) 965GME/GLE";
 141          break;
 142       case PCI_CHIP_GM45_GM:
 143          chipset = "Mobile Intel® GM45 Express Chipset";
 144          break;
 145       case PCI_CHIP_IGD_E_G:
 146          chipset = "Intel(R) Integrated Graphics Device";
 147          break;
 148       case PCI_CHIP_G45_G:
 149          chipset = "Intel(R) G45/G43";
 150          break;
 151       case PCI_CHIP_Q45_G:
 152          chipset = "Intel(R) Q45/Q43";
 153          break;
 154       case PCI_CHIP_G41_G:
 155          chipset = "Intel(R) G41";
 156          break;
 157       case PCI_CHIP_B43_G:
 158          chipset = "Intel(R) B43";
 159          break;
 160       case PCI_CHIP_ILD_G:
 161          chipset = "Intel(R) Ironlake Desktop";
 162          break;
 163       case PCI_CHIP_ILM_G:
 164          chipset = "Intel(R) Ironlake Mobile";
 165          break;
 166       case PCI_CHIP_SANDYBRIDGE_GT1:
 167       case PCI_CHIP_SANDYBRIDGE_GT2:
 168       case PCI_CHIP_SANDYBRIDGE_GT2_PLUS:
 169          chipset = "Intel(R) Sandybridge Desktop";
 170          break;
 171       case PCI_CHIP_SANDYBRIDGE_M_GT1:
 172       case PCI_CHIP_SANDYBRIDGE_M_GT2:
 173       case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS:
 174          chipset = "Intel(R) Sandybridge Mobile";
 175          break;
 176       case PCI_CHIP_SANDYBRIDGE_S:
 177          chipset = "Intel(R) Sandybridge Server";
 178          break;
 179       default:
 180          chipset = "Unknown Intel Chipset";
 181          break;
 182       }
 183
 184       (void) driGetRendererString(buffer, chipset, DRIVER_DATE_GEM, 0);
 185       return (GLubyte *) buffer;
 186
 187    default:
 188       return NULL;
 189    }
 190 }
 191
 192 static void
 193 intel_flush_front(struct gl_context *ctx)
 194 {
 195    struct intel_context *intel = intel_context(ctx);
 196     __DRIcontext *driContext = intel->driContext;
 197     __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 198
 199    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 200       if (screen->dri2.loader &&
 201           (screen->dri2.loader->base.version >= 2)
 202           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 203           driContext->driDrawablePriv &&
 204           driContext->driDrawablePriv->loaderPrivate) {
 205          (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv,
 206                                                   driContext->driDrawablePriv->loaderPrivate);
 207
 208          /* We set the dirty bit in intel_prepare_render() if we're
 209           * front buffer rendering once we get there.
 210           */
 211          intel->front_buffer_dirty = GL_FALSE;
 212       }
 213    }
 214 }
 215
 216 static unsigned
 217 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 218 {
 219    return _mesa_get_format_bytes(rb->Base.Format) * 8;
 220 }
 221
 222 void
 223 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 224 {
 225    struct gl_framebuffer *fb = drawable->driverPrivate;
 226    struct intel_renderbuffer *rb;
 227    struct intel_region *region, *depth_region;
 228    struct intel_context *intel = context->driverPrivate;
 229    struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
 230    __DRIbuffer *buffers = NULL;
 231    __DRIscreen *screen;
 232    int i, count;
 233    unsigned int attachments[10];
 234    const char *region_name;
 235
 236    /* If we're rendering to the fake front buffer, make sure all the
 237     * pending drawing has landed on the real front buffer.  Otherwise
 238     * when we eventually get to DRI2GetBuffersWithFormat the stale
 239     * real front buffer contents will get copied to the new fake front
 240     * buffer.
 241     */
 242    if (intel->is_front_buffer_rendering) {
 243       intel_flush(&intel->ctx);
 244       intel_flush_front(&intel->ctx);
 245    }
 246
 247    /* Set this up front, so that in case our buffers get invalidated
 248     * while we're getting new buffers, we don't clobber the stamp and
 249     * thus ignore the invalidate. */
 250    drawable->lastStamp = drawable->dri2.stamp;
 251
 252    if (INTEL_DEBUG & DEBUG_DRI)
 253       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 254
 255    screen = intel->intelScreen->driScrnPriv;
 256
 257    if (screen->dri2.loader
 258        && (screen->dri2.loader->base.version > 2)
 259        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 260
 261       front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 262       back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 263       depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 264       stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 265
 266       i = 0;
 267       if ((intel->is_front_buffer_rendering ||
 268            intel->is_front_buffer_reading ||
 269            !back_rb) && front_rb) {
 270          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 271          attachments[i++] = intel_bits_per_pixel(front_rb);
 272       }
 273
 274       if (back_rb) {
 275          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 276          attachments[i++] = intel_bits_per_pixel(back_rb);
 277       }
 278
 279       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 280          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 281          attachments[i++] = intel_bits_per_pixel(depth_rb);
 282       } else if (depth_rb != NULL) {
 283          attachments[i++] = __DRI_BUFFER_DEPTH;
 284          attachments[i++] = intel_bits_per_pixel(depth_rb);
 285       } else if (stencil_rb != NULL) {
 286          attachments[i++] = __DRI_BUFFER_STENCIL;
 287          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 288       }
 289
 290       buffers =
 291          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 292                                                       &drawable->w,
 293                                                       &drawable->h,
 294                                                       attachments, i / 2,
 295                                                       &count,
 296                                                       drawable->loaderPrivate);
 297    } else if (screen->dri2.loader) {
 298       i = 0;
 299       if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
 300          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 301       if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
 302          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 303       if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
 304          attachments[i++] = __DRI_BUFFER_DEPTH;
 305       if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
 306          attachments[i++] = __DRI_BUFFER_STENCIL;
 307
 308       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 309                                                    &drawable->w,
 310                                                    &drawable->h,
 311                                                    attachments, i,
 312                                                    &count,
 313                                                    drawable->loaderPrivate);
 314    }
 315
 316    if (buffers == NULL)
 317       return;
 318
 319    drawable->x = 0;
 320    drawable->y = 0;
 321    drawable->backX = 0;
 322    drawable->backY = 0;
 323    drawable->numClipRects = 1;
 324    drawable->pClipRects[0].x1 = 0;
 325    drawable->pClipRects[0].y1 = 0;
 326    drawable->pClipRects[0].x2 = drawable->w;
 327    drawable->pClipRects[0].y2 = drawable->h;
 328    drawable->numBackClipRects = 1;
 329    drawable->pBackClipRects[0].x1 = 0;
 330    drawable->pBackClipRects[0].y1 = 0;
 331    drawable->pBackClipRects[0].x2 = drawable->w;
 332    drawable->pBackClipRects[0].y2 = drawable->h;
 333
 334    depth_region = NULL;
 335    for (i = 0; i < count; i++) {
 336        switch (buffers[i].attachment) {
 337        case __DRI_BUFFER_FRONT_LEFT:
 338            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 339            region_name = "dri2 front buffer";
 340            break;
 341
 342        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 343            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 344            region_name = "dri2 fake front buffer";
 345            break;
 346
 347        case __DRI_BUFFER_BACK_LEFT:
 348            rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 349            region_name = "dri2 back buffer";
 350            break;
 351
 352        case __DRI_BUFFER_DEPTH:
 353            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 354            region_name = "dri2 depth buffer";
 355            break;
 356
 357        case __DRI_BUFFER_DEPTH_STENCIL:
 358            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 359            region_name = "dri2 depth / stencil buffer";
 360            break;
 361
 362        case __DRI_BUFFER_STENCIL:
 363            rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 364            region_name = "dri2 stencil buffer";
 365            break;
 366
 367        case __DRI_BUFFER_ACCUM:
 368        default:
 369            fprintf(stderr,
 370                    "unhandled buffer attach event, attachment type %d\n",
 371                    buffers[i].attachment);
 372            return;
 373        }
 374
 375        if (rb == NULL)
 376           continue;
 377
 378        if (rb->region && rb->region->name == buffers[i].name)
 379              continue;
 380
 381        if (INTEL_DEBUG & DEBUG_DRI)
 382           fprintf(stderr,
 383                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 384                   buffers[i].name, buffers[i].attachment,
 385                   buffers[i].cpp, buffers[i].pitch);
 386
 387        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 388           if (INTEL_DEBUG & DEBUG_DRI)
 389              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 390           intel_region_reference(&region, depth_region);
 391        }
 392        else
 393           region = intel_region_alloc_for_handle(intel->intelScreen,
 394                                                  buffers[i].cpp,
 395                                                  drawable->w,
 396                                                  drawable->h,
 397                                                  buffers[i].pitch / buffers[i].cpp,
 398                                                  buffers[i].name,
 399                                                  region_name);
 400
 401        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 402           depth_region = region;
 403
 404        intel_renderbuffer_set_region(intel, rb, region);
 405        intel_region_release(&region);
 406
 407        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 408           rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 409           if (rb != NULL) {
 410              struct intel_region *stencil_region = NULL;
 411
 412              if (rb->region && rb->region->name == buffers[i].name)
 413                    continue;
 414
 415              intel_region_reference(&stencil_region, region);
 416              intel_renderbuffer_set_region(intel, rb, stencil_region);
 417              intel_region_release(&stencil_region);
 418           }
 419        }
 420    }
 421
 422    driUpdateFramebufferSize(&intel->ctx, drawable);
 423 }
 424
 425 /**
 426  * intel_prepare_render should be called anywhere that curent read/drawbuffer
 427  * state is required.
 428  */
 429 void
 430 intel_prepare_render(struct intel_context *intel)
 431 {
 432    __DRIcontext *driContext = intel->driContext;
 433    __DRIdrawable *drawable;
 434
 435    drawable = driContext->driDrawablePriv;
 436    if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
 437       if (drawable->lastStamp != drawable->dri2.stamp)
 438          intel_update_renderbuffers(driContext, drawable);
 439       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 440       driContext->dri2.draw_stamp = drawable->dri2.stamp;
 441    }
 442
 443    drawable = driContext->driReadablePriv;
 444    if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
 445       if (drawable->lastStamp != drawable->dri2.stamp)
 446          intel_update_renderbuffers(driContext, drawable);
 447       driContext->dri2.read_stamp = drawable->dri2.stamp;
 448    }
 449
 450    /* If we're currently rendering to the front buffer, the rendering
 451     * that will happen next will probably dirty the front buffer.  So
 452     * mark it as dirty here.
 453     */
 454    if (intel->is_front_buffer_rendering)
 455       intel->front_buffer_dirty = GL_TRUE;
 456
 457    /* Wait for the swapbuffers before the one we just emitted, so we
 458     * don't get too many swaps outstanding for apps that are GPU-heavy
 459     * but not CPU-heavy.
 460     *
 461     * We're using intelDRI2Flush (called from the loader before
 462     * swapbuffer) and glFlush (for front buffer rendering) as the
 463     * indicator that a frame is done and then throttle when we get
 464     * here as we prepare to render the next frame.  At this point for
 465     * round trips for swap/copy and getting new buffers are done and
 466     * we'll spend less time waiting on the GPU.
 467     *
 468     * Unfortunately, we don't have a handle to the batch containing
 469     * the swap, and getting our hands on that doesn't seem worth it,
 470     * so we just us the first batch we emitted after the last swap.
 471     */
 472    if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
 473       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 474       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 475       intel->first_post_swapbuffers_batch = NULL;
 476       intel->need_throttle = GL_FALSE;
 477    }
 478 }
 479
 480 static void
 481 intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 482 {
 483     struct intel_context *intel = intel_context(ctx);
 484     __DRIcontext *driContext = intel->driContext;
 485
 486     if (intel->saved_viewport)
 487         intel->saved_viewport(ctx, x, y, w, h);
 488
 489     if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 490        dri2InvalidateDrawable(driContext->driDrawablePriv);
 491        dri2InvalidateDrawable(driContext->driReadablePriv);
 492     }
 493 }
 494
 495 static const struct dri_debug_control debug_control[] = {
 496    { "tex",   DEBUG_TEXTURE},
 497    { "state", DEBUG_STATE},
 498    { "ioctl", DEBUG_IOCTL},
 499    { "blit",  DEBUG_BLIT},
 500    { "mip",   DEBUG_MIPTREE},
 501    { "fall",  DEBUG_FALLBACKS},
 502    { "verb",  DEBUG_VERBOSE},
 503    { "bat",   DEBUG_BATCH},
 504    { "pix",   DEBUG_PIXEL},
 505    { "buf",   DEBUG_BUFMGR},
 506    { "reg",   DEBUG_REGION},
 507    { "fbo",   DEBUG_FBO},
 508    { "gs",    DEBUG_GS},
 509    { "sync",  DEBUG_SYNC},
 510    { "prim",  DEBUG_PRIMS },
 511    { "vert",  DEBUG_VERTS },
 512    { "dri",   DEBUG_DRI },
 513    { "sf",    DEBUG_SF },
 514    { "san",   DEBUG_SANITY },
 515    { "sleep", DEBUG_SLEEP },
 516    { "stats", DEBUG_STATS },
 517    { "tile",  DEBUG_TILE },
 518    { "sing",  DEBUG_SINGLE_THREAD },
 519    { "thre",  DEBUG_SINGLE_THREAD },
 520    { "wm",    DEBUG_WM },
 521    { "glsl_force", DEBUG_GLSL_FORCE },
 522    { "urb",   DEBUG_URB },
 523    { "vs",    DEBUG_VS },
 524    { "clip",  DEBUG_CLIP },
 525    { NULL,    0 }
 526 };
 527
 528
 529 static void
 530 intelInvalidateState(struct gl_context * ctx, GLuint new_state)
 531 {
 532     struct intel_context *intel = intel_context(ctx);
 533
 534    _swrast_InvalidateState(ctx, new_state);
 535    _swsetup_InvalidateState(ctx, new_state);
 536    _vbo_InvalidateState(ctx, new_state);
 537    _tnl_InvalidateState(ctx, new_state);
 538    _tnl_invalidate_vertex_state(ctx, new_state);
 539
 540    intel->NewGLState |= new_state;
 541
 542    if (intel->vtbl.invalidate_state)
 543       intel->vtbl.invalidate_state( intel, new_state );
 544 }
 545
 546 void
 547 intel_flush(struct gl_context *ctx)
 548 {
 549    struct intel_context *intel = intel_context(ctx);
 550
 551    if (intel->Fallback)
 552       _swrast_flush(ctx);
 553
 554    if (intel->gen < 4)
 555       INTEL_FIREVERTICES(intel);
 556
 557    if (intel->batch->map != intel->batch->ptr)
 558       intel_batchbuffer_flush(intel->batch);
 559 }
 560
 561 static void
 562 intel_glFlush(struct gl_context *ctx)
 563 {
 564    struct intel_context *intel = intel_context(ctx);
 565
 566    intel_flush(ctx);
 567    intel_flush_front(ctx);
 568    intel->need_throttle = GL_TRUE;
 569 }
 570
 571 void
 572 intelFinish(struct gl_context * ctx)
 573 {
 574    struct gl_framebuffer *fb = ctx->DrawBuffer;
 575    int i;
 576
 577    intel_flush(ctx);
 578    intel_flush_front(ctx);
 579
 580    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 581        struct intel_renderbuffer *irb;
 582
 583        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 584
 585        if (irb && irb->region)
 586           drm_intel_bo_wait_rendering(irb->region->buffer);
 587    }
 588    if (fb->_DepthBuffer) {
 589       /* XXX: Wait on buffer idle */
 590    }
 591 }
 592
 593 void
 594 intelInitDriverFunctions(struct dd_function_table *functions)
 595 {
 596    _mesa_init_driver_functions(functions);
 597
 598    functions->Flush = intel_glFlush;
 599    functions->Finish = intelFinish;
 600    functions->GetString = intelGetString;
 601    functions->UpdateState = intelInvalidateState;
 602
 603    intelInitTextureFuncs(functions);
 604    intelInitTextureImageFuncs(functions);
 605    intelInitTextureSubImageFuncs(functions);
 606    intelInitTextureCopyImageFuncs(functions);
 607    intelInitStateFuncs(functions);
 608    intelInitClearFuncs(functions);
 609    intelInitBufferFuncs(functions);
 610    intelInitPixelFuncs(functions);
 611    intelInitBufferObjectFuncs(functions);
 612    intel_init_syncobj_functions(functions);
 613 }
 614
 615
 616 GLboolean
 617 intelInitContext(struct intel_context *intel,
 618                  int api,
 619                  const struct gl_config * mesaVis,
 620                  __DRIcontext * driContextPriv,
 621                  void *sharedContextPrivate,
 622                  struct dd_function_table *functions)
 623 {
 624    struct gl_context *ctx = &intel->ctx;
 625    struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
 626    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 627    struct intel_screen *intelScreen = sPriv->private;
 628    int bo_reuse_mode;
 629    struct gl_config visual;
 630
 631    /* we can't do anything without a connection to the device */
 632    if (intelScreen->bufmgr == NULL)
 633       return GL_FALSE;
 634
 635    /* Can't rely on invalidate events, fall back to glViewport hack */
 636    if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
 637       intel->saved_viewport = functions->Viewport;
 638       functions->Viewport = intel_viewport;
 639    }
 640
 641    if (mesaVis == NULL) {
 642       memset(&visual, 0, sizeof visual);
 643       mesaVis = &visual;
 644    }
 645
 646    if (!_mesa_initialize_context_for_api(&intel->ctx, api, mesaVis, shareCtx,
 647                                          functions, (void *) intel)) {
 648       printf("%s: failed to init mesa context\n", __FUNCTION__);
 649       return GL_FALSE;
 650    }
 651
 652    driContextPriv->driverPrivate = intel;
 653    intel->intelScreen = intelScreen;
 654    intel->driContext = driContextPriv;
 655    intel->driFd = sPriv->fd;
 656
 657    intel->has_xrgb_textures = GL_TRUE;
 658    if (IS_GEN6(intel->intelScreen->deviceID)) {
 659       intel->gen = 6;
 660       intel->needs_ff_sync = GL_TRUE;
 661       intel->has_luminance_srgb = GL_TRUE;
 662    } else if (IS_GEN5(intel->intelScreen->deviceID)) {
 663       intel->gen = 5;
 664       intel->needs_ff_sync = GL_TRUE;
 665       intel->has_luminance_srgb = GL_TRUE;
 666    } else if (IS_965(intel->intelScreen->deviceID)) {
 667       intel->gen = 4;
 668       if (IS_G4X(intel->intelScreen->deviceID)) {
 669           intel->has_luminance_srgb = GL_TRUE;
 670           intel->is_g4x = GL_TRUE;
 671       }
 672    } else if (IS_9XX(intel->intelScreen->deviceID)) {
 673       intel->gen = 3;
 674       if (IS_945(intel->intelScreen->deviceID)) {
 675          intel->is_945 = GL_TRUE;
 676       }
 677    } else {
 678       intel->gen = 2;
 679       if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
 680           intel->intelScreen->deviceID == PCI_CHIP_845_G) {
 681          intel->has_xrgb_textures = GL_FALSE;
 682       }
 683    }
 684
 685    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 686                        sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
 687    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 688       intel->maxBatchSize = 4096;
 689    else
 690       intel->maxBatchSize = BATCH_SZ;
 691
 692    intel->bufmgr = intelScreen->bufmgr;
 693
 694    bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 695    switch (bo_reuse_mode) {
 696    case DRI_CONF_BO_REUSE_DISABLED:
 697       break;
 698    case DRI_CONF_BO_REUSE_ALL:
 699       intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 700       break;
 701    }
 702
 703    /* This doesn't yet catch all non-conformant rendering, but it's a
 704     * start.
 705     */
 706    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 707       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 708       if (value > 0) {
 709          intel->conformance_mode = value;
 710       }
 711       else {
 712          intel->conformance_mode = 1;
 713       }
 714    }
 715
 716    if (intel->conformance_mode > 0) {
 717       ctx->Const.MinLineWidth = 1.0;
 718       ctx->Const.MinLineWidthAA = 1.0;
 719       ctx->Const.MaxLineWidth = 1.0;
 720       ctx->Const.MaxLineWidthAA = 1.0;
 721       ctx->Const.LineWidthGranularity = 1.0;
 722    }
 723    else {
 724       ctx->Const.MinLineWidth = 1.0;
 725       ctx->Const.MinLineWidthAA = 1.0;
 726       ctx->Const.MaxLineWidth = 5.0;
 727       ctx->Const.MaxLineWidthAA = 5.0;
 728       ctx->Const.LineWidthGranularity = 0.5;
 729    }
 730
 731    ctx->Const.MinPointSize = 1.0;
 732    ctx->Const.MinPointSizeAA = 1.0;
 733    ctx->Const.MaxPointSize = 255.0;
 734    ctx->Const.MaxPointSizeAA = 3.0;
 735    ctx->Const.PointSizeGranularity = 1.0;
 736
 737    ctx->Const.MaxSamples = 1.0;
 738
 739    /* reinitialize the context point state.
 740     * It depend on constants in __struct gl_contextRec::Const
 741     */
 742    _mesa_init_point(ctx);
 743
 744    meta_init_metaops(ctx, &intel->meta);
 745    if (intel->gen >= 4) {
 746       if (MAX_WIDTH > 8192)
 747          ctx->Const.MaxRenderbufferSize = 8192;
 748    } else {
 749       if (MAX_WIDTH > 2048)
 750          ctx->Const.MaxRenderbufferSize = 2048;
 751    }
 752
 753    /* Initialize the software rasterizer and helper modules. */
 754    _swrast_CreateContext(ctx);
 755    _vbo_CreateContext(ctx);
 756    _tnl_CreateContext(ctx);
 757    _swsetup_CreateContext(ctx);
 758
 759    /* Configure swrast to match hardware characteristics: */
 760    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 761    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 762
 763    _mesa_meta_init(ctx);
 764
 765    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 766    intel->hw_stipple = 1;
 767
 768    /* XXX FBO: this doesn't seem to be used anywhere */
 769    switch (mesaVis->depthBits) {
 770    case 0:                     /* what to do in this case? */
 771    case 16:
 772       intel->polygon_offset_scale = 1.0;
 773       break;
 774    case 24:
 775       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 776       break;
 777    default:
 778       assert(0);
 779       break;
 780    }
 781
 782    if (intel->gen >= 4)
 783       intel->polygon_offset_scale /= 0xffff;
 784
 785    intel->RenderIndex = ~0;
 786
 787    switch (ctx->API) {
 788    case API_OPENGL:
 789       intelInitExtensions(ctx);
 790       break;
 791    case API_OPENGLES:
 792       break;
 793    case API_OPENGLES2:
 794       intelInitExtensionsES2(ctx);
 795       break;
 796    }
 797
 798    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 799    if (INTEL_DEBUG & DEBUG_BUFMGR)
 800       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 801
 802    /* XXX force SIMD8 kernel for Sandybridge before we fixed
 803       SIMD16 interpolation. */
 804    if (intel->gen == 6)
 805        INTEL_DEBUG |= DEBUG_GLSL_FORCE;
 806
 807    intel->batch = intel_batchbuffer_alloc(intel);
 808
 809    intel_fbo_init(intel);
 810
 811    if (intel->ctx.Mesa_DXTn) {
 812       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 813       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 814    }
 815    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 816       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 817    }
 818    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 819                                                "texture_tiling");
 820    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 821
 822    intel->prim.primitive = ~0;
 823
 824    /* Force all software fallbacks */
 825    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 826       fprintf(stderr, "disabling 3D rasterization\n");
 827       intel->no_rast = 1;
 828    }
 829
 830    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 831       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 832       intel->always_flush_batch = 1;
 833    }
 834
 835    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 836       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 837       intel->always_flush_cache = 1;
 838    }
 839
 840    /* Disable all hardware rendering (skip emitting batches and fences/waits
 841     * to the kernel)
 842     */
 843    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 844
 845    return GL_TRUE;
 846 }
 847
 848 void
 849 intelDestroyContext(__DRIcontext * driContextPriv)
 850 {
 851    struct intel_context *intel =
 852       (struct intel_context *) driContextPriv->driverPrivate;
 853
 854    assert(intel);               /* should never be null */
 855    if (intel) {
 856       INTEL_FIREVERTICES(intel);
 857
 858       _mesa_meta_free(&intel->ctx);
 859
 860       meta_destroy_metaops(&intel->meta);
 861
 862       intel->vtbl.destroy(intel);
 863
 864       _swsetup_DestroyContext(&intel->ctx);
 865       _tnl_DestroyContext(&intel->ctx);
 866       _vbo_DestroyContext(&intel->ctx);
 867
 868       _swrast_DestroyContext(&intel->ctx);
 869       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 870
 871       intel_batchbuffer_free(intel->batch);
 872       intel->batch = NULL;
 873
 874       free(intel->prim.vb);
 875       intel->prim.vb = NULL;
 876       drm_intel_bo_unreference(intel->prim.vb_bo);
 877       intel->prim.vb_bo = NULL;
 878       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 879       intel->first_post_swapbuffers_batch = NULL;
 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(__DRIcontext * driContextPriv)
 893 {
 894    /* Unset current context and dispath table */
 895    _mesa_make_current(NULL, NULL, NULL);
 896
 897    return GL_TRUE;
 898 }
 899
 900 GLboolean
 901 intelMakeCurrent(__DRIcontext * driContextPriv,
 902                  __DRIdrawable * driDrawPriv,
 903                  __DRIdrawable * driReadPriv)
 904 {
 905    struct intel_context *intel;
 906    GET_CURRENT_CONTEXT(curCtx);
 907
 908    if (driContextPriv)
 909       intel = (struct intel_context *) driContextPriv->driverPrivate;
 910    else
 911       intel = NULL;
 912
 913    /* According to the glXMakeCurrent() man page: "Pending commands to
 914     * the previous context, if any, are flushed before it is released."
 915     * But only flush if we're actually changing contexts.
 916     */
 917    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 918       _mesa_flush(curCtx);
 919    }
 920
 921    if (driContextPriv) {
 922       struct gl_framebuffer *fb, *readFb;
 923
 924       if (driDrawPriv == NULL && driReadPriv == NULL) {
 925          fb = _mesa_get_incomplete_framebuffer();
 926          readFb = _mesa_get_incomplete_framebuffer();
 927       } else {
 928          fb = driDrawPriv->driverPrivate;
 929          readFb = driReadPriv->driverPrivate;
 930          driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
 931          driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
 932       }
 933
 934       intel_prepare_render(intel);
 935       _mesa_make_current(&intel->ctx, fb, readFb);
 936
 937       /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
 938        * is NULL at that point.  We can't call _mesa_makecurrent()
 939        * first, since we need the buffer size for the initial
 940        * viewport.  So just call intel_draw_buffer() again here. */
 941       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 942    }
 943    else {
 944       _mesa_make_current(NULL, NULL, NULL);
 945    }
 946
 947    return GL_TRUE;
 948 }