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 static const GLubyte *
  66 intelGetString(struct gl_context * ctx, GLenum name)
  67 {
  68    const struct intel_context *const intel = intel_context(ctx);
  69    const char *chipset;
  70    static char buffer[128];
  71
  72    switch (name) {
  73    case GL_VENDOR:
  74       return (GLubyte *) "Tungsten Graphics, Inc";
  75       break;
  76
  77    case GL_RENDERER:
  78       switch (intel->intelScreen->deviceID) {
  79       case PCI_CHIP_845_G:
  80          chipset = "Intel(R) 845G";
  81          break;
  82       case PCI_CHIP_I830_M:
  83          chipset = "Intel(R) 830M";
  84          break;
  85       case PCI_CHIP_I855_GM:
  86          chipset = "Intel(R) 852GM/855GM";
  87          break;
  88       case PCI_CHIP_I865_G:
  89          chipset = "Intel(R) 865G";
  90          break;
  91       case PCI_CHIP_I915_G:
  92          chipset = "Intel(R) 915G";
  93          break;
  94       case PCI_CHIP_E7221_G:
  95          chipset = "Intel (R) E7221G (i915)";
  96          break;
  97       case PCI_CHIP_I915_GM:
  98          chipset = "Intel(R) 915GM";
  99          break;
 100       case PCI_CHIP_I945_G:
 101          chipset = "Intel(R) 945G";
 102          break;
 103       case PCI_CHIP_I945_GM:
 104          chipset = "Intel(R) 945GM";
 105          break;
 106       case PCI_CHIP_I945_GME:
 107          chipset = "Intel(R) 945GME";
 108          break;
 109       case PCI_CHIP_G33_G:
 110          chipset = "Intel(R) G33";
 111          break;
 112       case PCI_CHIP_Q35_G:
 113          chipset = "Intel(R) Q35";
 114          break;
 115       case PCI_CHIP_Q33_G:
 116          chipset = "Intel(R) Q33";
 117          break;
 118       case PCI_CHIP_IGD_GM:
 119       case PCI_CHIP_IGD_G:
 120          chipset = "Intel(R) IGD";
 121          break;
 122       case PCI_CHIP_I965_Q:
 123          chipset = "Intel(R) 965Q";
 124          break;
 125       case PCI_CHIP_I965_G:
 126       case PCI_CHIP_I965_G_1:
 127          chipset = "Intel(R) 965G";
 128          break;
 129       case PCI_CHIP_I946_GZ:
 130          chipset = "Intel(R) 946GZ";
 131          break;
 132       case PCI_CHIP_I965_GM:
 133          chipset = "Intel(R) 965GM";
 134          break;
 135       case PCI_CHIP_I965_GME:
 136          chipset = "Intel(R) 965GME/GLE";
 137          break;
 138       case PCI_CHIP_GM45_GM:
 139          chipset = "Mobile Intel® GM45 Express Chipset";
 140          break;
 141       case PCI_CHIP_IGD_E_G:
 142          chipset = "Intel(R) Integrated Graphics Device";
 143          break;
 144       case PCI_CHIP_G45_G:
 145          chipset = "Intel(R) G45/G43";
 146          break;
 147       case PCI_CHIP_Q45_G:
 148          chipset = "Intel(R) Q45/Q43";
 149          break;
 150       case PCI_CHIP_G41_G:
 151          chipset = "Intel(R) G41";
 152          break;
 153       case PCI_CHIP_B43_G:
 154       case PCI_CHIP_B43_G1:
 155          chipset = "Intel(R) B43";
 156          break;
 157       case PCI_CHIP_ILD_G:
 158          chipset = "Intel(R) Ironlake Desktop";
 159          break;
 160       case PCI_CHIP_ILM_G:
 161          chipset = "Intel(R) Ironlake Mobile";
 162          break;
 163       case PCI_CHIP_SANDYBRIDGE_GT1:
 164       case PCI_CHIP_SANDYBRIDGE_GT2:
 165       case PCI_CHIP_SANDYBRIDGE_GT2_PLUS:
 166          chipset = "Intel(R) Sandybridge Desktop";
 167          break;
 168       case PCI_CHIP_SANDYBRIDGE_M_GT1:
 169       case PCI_CHIP_SANDYBRIDGE_M_GT2:
 170       case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS:
 171          chipset = "Intel(R) Sandybridge Mobile";
 172          break;
 173       case PCI_CHIP_SANDYBRIDGE_S:
 174          chipset = "Intel(R) Sandybridge Server";
 175          break;
 176       case PCI_CHIP_IVYBRIDGE_GT1:
 177       case PCI_CHIP_IVYBRIDGE_GT2:
 178          chipset = "Intel(R) Ivybridge Desktop";
 179          break;
 180       case PCI_CHIP_IVYBRIDGE_M_GT1:
 181       case PCI_CHIP_IVYBRIDGE_M_GT2:
 182          chipset = "Intel(R) Ivybridge Mobile";
 183          break;
 184       case PCI_CHIP_IVYBRIDGE_S_GT1:
 185          chipset = "Intel(R) Ivybridge Server";
 186          break;
 187       default:
 188          chipset = "Unknown Intel Chipset";
 189          break;
 190       }
 191
 192       (void) driGetRendererString(buffer, chipset, 0);
 193       return (GLubyte *) buffer;
 194
 195    default:
 196       return NULL;
 197    }
 198 }
 199
 200 static void
 201 intel_flush_front(struct gl_context *ctx)
 202 {
 203    struct intel_context *intel = intel_context(ctx);
 204     __DRIcontext *driContext = intel->driContext;
 205     __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 206
 207    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 208       if (screen->dri2.loader &&
 209           (screen->dri2.loader->base.version >= 2)
 210           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 211           driContext->driDrawablePriv &&
 212           driContext->driDrawablePriv->loaderPrivate) {
 213          (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv,
 214                                                   driContext->driDrawablePriv->loaderPrivate);
 215
 216          /* We set the dirty bit in intel_prepare_render() if we're
 217           * front buffer rendering once we get there.
 218           */
 219          intel->front_buffer_dirty = GL_FALSE;
 220       }
 221    }
 222 }
 223
 224 static unsigned
 225 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 226 {
 227    return _mesa_get_format_bytes(rb->Base.Format) * 8;
 228 }
 229
 230 void
 231 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 232 {
 233    struct gl_framebuffer *fb = drawable->driverPrivate;
 234    struct intel_renderbuffer *rb;
 235    struct intel_region *region, *depth_region;
 236    struct intel_context *intel = context->driverPrivate;
 237    struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
 238    __DRIbuffer *buffers = NULL;
 239    __DRIscreen *screen;
 240    int i, count;
 241    unsigned int attachments[10];
 242    const char *region_name;
 243
 244    /* If we're rendering to the fake front buffer, make sure all the
 245     * pending drawing has landed on the real front buffer.  Otherwise
 246     * when we eventually get to DRI2GetBuffersWithFormat the stale
 247     * real front buffer contents will get copied to the new fake front
 248     * buffer.
 249     */
 250    if (intel->is_front_buffer_rendering) {
 251       intel_flush(&intel->ctx);
 252       intel_flush_front(&intel->ctx);
 253    }
 254
 255    /* Set this up front, so that in case our buffers get invalidated
 256     * while we're getting new buffers, we don't clobber the stamp and
 257     * thus ignore the invalidate. */
 258    drawable->lastStamp = drawable->dri2.stamp;
 259
 260    if (unlikely(INTEL_DEBUG & DEBUG_DRI))
 261       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 262
 263    screen = intel->intelScreen->driScrnPriv;
 264
 265    if (screen->dri2.loader
 266        && (screen->dri2.loader->base.version > 2)
 267        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 268
 269       front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 270       back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 271       depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 272       stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 273
 274       i = 0;
 275       if ((intel->is_front_buffer_rendering ||
 276            intel->is_front_buffer_reading ||
 277            !back_rb) && front_rb) {
 278          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 279          attachments[i++] = intel_bits_per_pixel(front_rb);
 280       }
 281
 282       if (back_rb) {
 283          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 284          attachments[i++] = intel_bits_per_pixel(back_rb);
 285       }
 286
 287       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 288          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 289          attachments[i++] = intel_bits_per_pixel(depth_rb);
 290       } else if (depth_rb != NULL) {
 291          attachments[i++] = __DRI_BUFFER_DEPTH;
 292          attachments[i++] = intel_bits_per_pixel(depth_rb);
 293       } else if (stencil_rb != NULL) {
 294          attachments[i++] = __DRI_BUFFER_STENCIL;
 295          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 296       }
 297
 298       buffers =
 299          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 300                                                       &drawable->w,
 301                                                       &drawable->h,
 302                                                       attachments, i / 2,
 303                                                       &count,
 304                                                       drawable->loaderPrivate);
 305    } else if (screen->dri2.loader) {
 306       i = 0;
 307       if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
 308          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 309       if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
 310          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 311       if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
 312          attachments[i++] = __DRI_BUFFER_DEPTH;
 313       if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
 314          attachments[i++] = __DRI_BUFFER_STENCIL;
 315
 316       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 317                                                    &drawable->w,
 318                                                    &drawable->h,
 319                                                    attachments, i,
 320                                                    &count,
 321                                                    drawable->loaderPrivate);
 322    }
 323
 324    if (buffers == NULL)
 325       return;
 326
 327    drawable->x = 0;
 328    drawable->y = 0;
 329    drawable->backX = 0;
 330    drawable->backY = 0;
 331    drawable->numClipRects = 1;
 332    drawable->pClipRects[0].x1 = 0;
 333    drawable->pClipRects[0].y1 = 0;
 334    drawable->pClipRects[0].x2 = drawable->w;
 335    drawable->pClipRects[0].y2 = drawable->h;
 336    drawable->numBackClipRects = 1;
 337    drawable->pBackClipRects[0].x1 = 0;
 338    drawable->pBackClipRects[0].y1 = 0;
 339    drawable->pBackClipRects[0].x2 = drawable->w;
 340    drawable->pBackClipRects[0].y2 = drawable->h;
 341
 342    depth_region = NULL;
 343    for (i = 0; i < count; i++) {
 344        switch (buffers[i].attachment) {
 345        case __DRI_BUFFER_FRONT_LEFT:
 346            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 347            region_name = "dri2 front buffer";
 348            break;
 349
 350        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 351            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 352            region_name = "dri2 fake front buffer";
 353            break;
 354
 355        case __DRI_BUFFER_BACK_LEFT:
 356            rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 357            region_name = "dri2 back buffer";
 358            break;
 359
 360        case __DRI_BUFFER_DEPTH:
 361            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 362            region_name = "dri2 depth buffer";
 363            break;
 364
 365        case __DRI_BUFFER_DEPTH_STENCIL:
 366            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 367            region_name = "dri2 depth / stencil buffer";
 368            break;
 369
 370        case __DRI_BUFFER_STENCIL:
 371            rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 372            region_name = "dri2 stencil buffer";
 373            break;
 374
 375        case __DRI_BUFFER_ACCUM:
 376        default:
 377            fprintf(stderr,
 378                    "unhandled buffer attach event, attachment type %d\n",
 379                    buffers[i].attachment);
 380            return;
 381        }
 382
 383        if (rb == NULL)
 384           continue;
 385
 386        if (rb->region && rb->region->name == buffers[i].name)
 387              continue;
 388
 389        if (unlikely(INTEL_DEBUG & DEBUG_DRI))
 390           fprintf(stderr,
 391                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 392                   buffers[i].name, buffers[i].attachment,
 393                   buffers[i].cpp, buffers[i].pitch);
 394
 395        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 396           if (unlikely(INTEL_DEBUG & DEBUG_DRI))
 397              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 398           intel_region_reference(&region, depth_region);
 399        }
 400        else
 401           region = intel_region_alloc_for_handle(intel->intelScreen,
 402                                                  buffers[i].cpp,
 403                                                  drawable->w,
 404                                                  drawable->h,
 405                                                  buffers[i].pitch / buffers[i].cpp,
 406                                                  buffers[i].name,
 407                                                  region_name);
 408
 409        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 410           depth_region = region;
 411
 412        intel_renderbuffer_set_region(intel, rb, region);
 413        intel_region_release(&region);
 414
 415        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 416           rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 417           if (rb != NULL) {
 418              struct intel_region *stencil_region = NULL;
 419
 420              if (rb->region && rb->region->name == buffers[i].name)
 421                    continue;
 422
 423              intel_region_reference(&stencil_region, region);
 424              intel_renderbuffer_set_region(intel, rb, stencil_region);
 425              intel_region_release(&stencil_region);
 426           }
 427        }
 428    }
 429
 430    driUpdateFramebufferSize(&intel->ctx, drawable);
 431 }
 432
 433 /**
 434  * intel_prepare_render should be called anywhere that curent read/drawbuffer
 435  * state is required.
 436  */
 437 void
 438 intel_prepare_render(struct intel_context *intel)
 439 {
 440    __DRIcontext *driContext = intel->driContext;
 441    __DRIdrawable *drawable;
 442
 443    drawable = driContext->driDrawablePriv;
 444    if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
 445       if (drawable->lastStamp != drawable->dri2.stamp)
 446          intel_update_renderbuffers(driContext, drawable);
 447       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 448       driContext->dri2.draw_stamp = drawable->dri2.stamp;
 449    }
 450
 451    drawable = driContext->driReadablePriv;
 452    if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
 453       if (drawable->lastStamp != drawable->dri2.stamp)
 454          intel_update_renderbuffers(driContext, drawable);
 455       driContext->dri2.read_stamp = drawable->dri2.stamp;
 456    }
 457
 458    /* If we're currently rendering to the front buffer, the rendering
 459     * that will happen next will probably dirty the front buffer.  So
 460     * mark it as dirty here.
 461     */
 462    if (intel->is_front_buffer_rendering)
 463       intel->front_buffer_dirty = GL_TRUE;
 464
 465    /* Wait for the swapbuffers before the one we just emitted, so we
 466     * don't get too many swaps outstanding for apps that are GPU-heavy
 467     * but not CPU-heavy.
 468     *
 469     * We're using intelDRI2Flush (called from the loader before
 470     * swapbuffer) and glFlush (for front buffer rendering) as the
 471     * indicator that a frame is done and then throttle when we get
 472     * here as we prepare to render the next frame.  At this point for
 473     * round trips for swap/copy and getting new buffers are done and
 474     * we'll spend less time waiting on the GPU.
 475     *
 476     * Unfortunately, we don't have a handle to the batch containing
 477     * the swap, and getting our hands on that doesn't seem worth it,
 478     * so we just us the first batch we emitted after the last swap.
 479     */
 480    if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
 481       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 482       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 483       intel->first_post_swapbuffers_batch = NULL;
 484       intel->need_throttle = GL_FALSE;
 485    }
 486 }
 487
 488 static void
 489 intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 490 {
 491     struct intel_context *intel = intel_context(ctx);
 492     __DRIcontext *driContext = intel->driContext;
 493
 494     if (intel->saved_viewport)
 495         intel->saved_viewport(ctx, x, y, w, h);
 496
 497     if (ctx->DrawBuffer->Name == 0) {
 498        dri2InvalidateDrawable(driContext->driDrawablePriv);
 499        dri2InvalidateDrawable(driContext->driReadablePriv);
 500     }
 501 }
 502
 503 static const struct dri_debug_control debug_control[] = {
 504    { "tex",   DEBUG_TEXTURE},
 505    { "state", DEBUG_STATE},
 506    { "ioctl", DEBUG_IOCTL},
 507    { "blit",  DEBUG_BLIT},
 508    { "mip",   DEBUG_MIPTREE},
 509    { "fall",  DEBUG_FALLBACKS},
 510    { "verb",  DEBUG_VERBOSE},
 511    { "bat",   DEBUG_BATCH},
 512    { "pix",   DEBUG_PIXEL},
 513    { "buf",   DEBUG_BUFMGR},
 514    { "reg",   DEBUG_REGION},
 515    { "fbo",   DEBUG_FBO},
 516    { "gs",    DEBUG_GS},
 517    { "sync",  DEBUG_SYNC},
 518    { "prim",  DEBUG_PRIMS },
 519    { "vert",  DEBUG_VERTS },
 520    { "dri",   DEBUG_DRI },
 521    { "sf",    DEBUG_SF },
 522    { "san",   DEBUG_SANITY },
 523    { "sleep", DEBUG_SLEEP },
 524    { "stats", DEBUG_STATS },
 525    { "tile",  DEBUG_TILE },
 526    { "sing",  DEBUG_SINGLE_THREAD },
 527    { "thre",  DEBUG_SINGLE_THREAD },
 528    { "wm",    DEBUG_WM },
 529    { "urb",   DEBUG_URB },
 530    { "vs",    DEBUG_VS },
 531    { "clip",  DEBUG_CLIP },
 532    { NULL,    0 }
 533 };
 534
 535
 536 static void
 537 intelInvalidateState(struct gl_context * ctx, GLuint new_state)
 538 {
 539     struct intel_context *intel = intel_context(ctx);
 540
 541    _swrast_InvalidateState(ctx, new_state);
 542    _swsetup_InvalidateState(ctx, new_state);
 543    _vbo_InvalidateState(ctx, new_state);
 544    _tnl_InvalidateState(ctx, new_state);
 545    _tnl_invalidate_vertex_state(ctx, new_state);
 546
 547    intel->NewGLState |= new_state;
 548
 549    if (intel->vtbl.invalidate_state)
 550       intel->vtbl.invalidate_state( intel, new_state );
 551 }
 552
 553 void
 554 intel_flush(struct gl_context *ctx)
 555 {
 556    struct intel_context *intel = intel_context(ctx);
 557
 558    if (intel->Fallback)
 559       _swrast_flush(ctx);
 560
 561    if (intel->gen < 4)
 562       INTEL_FIREVERTICES(intel);
 563
 564    if (intel->batch.used)
 565       intel_batchbuffer_flush(intel);
 566 }
 567
 568 static void
 569 intel_glFlush(struct gl_context *ctx)
 570 {
 571    struct intel_context *intel = intel_context(ctx);
 572
 573    intel_flush(ctx);
 574    intel_flush_front(ctx);
 575    if (intel->is_front_buffer_rendering)
 576       intel->need_throttle = GL_TRUE;
 577 }
 578
 579 void
 580 intelFinish(struct gl_context * ctx)
 581 {
 582    struct gl_framebuffer *fb = ctx->DrawBuffer;
 583    int i;
 584
 585    intel_flush(ctx);
 586    intel_flush_front(ctx);
 587
 588    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 589        struct intel_renderbuffer *irb;
 590
 591        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 592
 593        if (irb && irb->region && irb->region->buffer)
 594           drm_intel_bo_wait_rendering(irb->region->buffer);
 595    }
 596    if (fb->_DepthBuffer) {
 597       /* XXX: Wait on buffer idle */
 598    }
 599 }
 600
 601 void
 602 intelInitDriverFunctions(struct dd_function_table *functions)
 603 {
 604    _mesa_init_driver_functions(functions);
 605
 606    functions->Flush = intel_glFlush;
 607    functions->Finish = intelFinish;
 608    functions->GetString = intelGetString;
 609    functions->UpdateState = intelInvalidateState;
 610
 611    intelInitTextureFuncs(functions);
 612    intelInitTextureImageFuncs(functions);
 613    intelInitTextureSubImageFuncs(functions);
 614    intelInitTextureCopyImageFuncs(functions);
 615    intelInitStateFuncs(functions);
 616    intelInitClearFuncs(functions);
 617    intelInitBufferFuncs(functions);
 618    intelInitPixelFuncs(functions);
 619    intelInitBufferObjectFuncs(functions);
 620    intel_init_syncobj_functions(functions);
 621 }
 622
 623 /**
 624  * Override intel->has_hiz with environment variable INTEL_HIZ.
 625  *
 626  * Valid values for INTEL_HIZ are "0" and "1". If an invalid valid value is
 627  * encountered, a warning is emitted and INTEL_HIZ is ignored.
 628  */
 629 static void
 630 intel_override_hiz(struct intel_context *intel)
 631 {
 632    const char *s = getenv("INTEL_HIZ");
 633    if (!s) {
 634       return;
 635    } else if (!strncmp("0", s, 2)) {
 636       intel->has_hiz = false;
 637    } else if (!strncmp("1", s, 2)) {
 638       intel->has_hiz = true;
 639    } else {
 640       _mesa_warning(&intel->ctx,
 641                     "env variable INTEL_HIZ=\"%s\" has invalid value and "
 642                     "is ignored", s);
 643    }
 644 }
 645
 646 /**
 647  * Override intel->has_separate_stencil with environment variable
 648  * INTEL_SEPARATE_STENCIL.
 649  *
 650  * Valid values for INTEL_SEPARATE_STENCIL are "0" and "1". If an invalid
 651  * value is encountered, a warning is emitted and INTEL_SEPARATE_STENCIL is
 652  * ignored.
 653  */
 654 static void
 655 intel_override_separate_stencil(struct intel_context *intel)
 656 {
 657    const char *s = getenv("INTEL_SEPARATE_STENCIL");
 658    if (!s) {
 659       return;
 660    } else if (!strncmp("0", s, 2)) {
 661       intel->has_separate_stencil = false;
 662    } else if (!strncmp("1", s, 2)) {
 663       intel->has_separate_stencil = true;
 664    } else {
 665       _mesa_warning(&intel->ctx,
 666                     "env variable INTEL_SEPARATE_STENCIL=\"%s\" has invalid "
 667                     "value and is ignored", s);
 668    }
 669 }
 670
 671 GLboolean
 672 intelInitContext(struct intel_context *intel,
 673                  int api,
 674                  const struct gl_config * mesaVis,
 675                  __DRIcontext * driContextPriv,
 676                  void *sharedContextPrivate,
 677                  struct dd_function_table *functions)
 678 {
 679    struct gl_context *ctx = &intel->ctx;
 680    struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
 681    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 682    struct intel_screen *intelScreen = sPriv->private;
 683    int bo_reuse_mode;
 684    struct gl_config visual;
 685
 686    /* we can't do anything without a connection to the device */
 687    if (intelScreen->bufmgr == NULL)
 688       return GL_FALSE;
 689
 690    /* Can't rely on invalidate events, fall back to glViewport hack */
 691    if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
 692       intel->saved_viewport = functions->Viewport;
 693       functions->Viewport = intel_viewport;
 694    }
 695
 696    if (mesaVis == NULL) {
 697       memset(&visual, 0, sizeof visual);
 698       mesaVis = &visual;
 699    }
 700
 701    if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
 702                                  functions, (void *) intel)) {
 703       printf("%s: failed to init mesa context\n", __FUNCTION__);
 704       return GL_FALSE;
 705    }
 706
 707    driContextPriv->driverPrivate = intel;
 708    intel->intelScreen = intelScreen;
 709    intel->driContext = driContextPriv;
 710    intel->driFd = sPriv->fd;
 711
 712    intel->has_xrgb_textures = GL_TRUE;
 713    intel->gen = intelScreen->gen;
 714    if (IS_GEN7(intel->intelScreen->deviceID)) {
 715       intel->needs_ff_sync = GL_TRUE;
 716       intel->has_luminance_srgb = GL_TRUE;
 717       /* FINISHME: Enable intel->has_separate_stencil on Gen7. */
 718       /* FINISHME: Enable intel->must_use_separate_stencil on Gen7. */
 719       /* FINISHME: Enable intel->has_hiz on Gen7. */
 720    } else if (IS_GEN6(intel->intelScreen->deviceID)) {
 721       intel->needs_ff_sync = GL_TRUE;
 722       intel->has_luminance_srgb = GL_TRUE;
 723       /* FINISHME: Enable intel->has_separate_stencil on Gen6. */
 724       /* FINISHME: Enable intel->has_hiz on Gen6. */
 725    } else if (IS_GEN5(intel->intelScreen->deviceID)) {
 726       intel->needs_ff_sync = GL_TRUE;
 727       intel->has_luminance_srgb = GL_TRUE;
 728    } else if (IS_965(intel->intelScreen->deviceID)) {
 729       if (IS_G4X(intel->intelScreen->deviceID)) {
 730           intel->has_luminance_srgb = GL_TRUE;
 731           intel->is_g4x = GL_TRUE;
 732       }
 733    } else if (IS_9XX(intel->intelScreen->deviceID)) {
 734       if (IS_945(intel->intelScreen->deviceID)) {
 735          intel->is_945 = GL_TRUE;
 736       }
 737    } else {
 738       if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
 739           intel->intelScreen->deviceID == PCI_CHIP_845_G) {
 740          intel->has_xrgb_textures = GL_FALSE;
 741       }
 742    }
 743
 744    intel_override_hiz(intel);
 745    intel_override_separate_stencil(intel);
 746
 747    memset(&ctx->TextureFormatSupported, 0,
 748           sizeof(ctx->TextureFormatSupported));
 749    ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = GL_TRUE;
 750    if (intel->has_xrgb_textures)
 751       ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = GL_TRUE;
 752    ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = GL_TRUE;
 753    ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = GL_TRUE;
 754    ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = GL_TRUE;
 755    ctx->TextureFormatSupported[MESA_FORMAT_L8] = GL_TRUE;
 756    ctx->TextureFormatSupported[MESA_FORMAT_A8] = GL_TRUE;
 757    ctx->TextureFormatSupported[MESA_FORMAT_I8] = GL_TRUE;
 758    ctx->TextureFormatSupported[MESA_FORMAT_AL88] = GL_TRUE;
 759    if (intel->gen >= 4)
 760       ctx->TextureFormatSupported[MESA_FORMAT_AL1616] = GL_TRUE;
 761    ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = GL_TRUE;
 762    /*
 763     * This was disabled in initial FBO enabling to avoid combinations
 764     * of depth+stencil that wouldn't work together.  We since decided
 765     * that it was OK, since it's up to the app to come up with the
 766     * combo that actually works, so this can probably be re-enabled.
 767     */
 768    /*
 769    ctx->TextureFormatSupported[MESA_FORMAT_Z16] = GL_TRUE;
 770    ctx->TextureFormatSupported[MESA_FORMAT_Z24] = GL_TRUE;
 771    */
 772
 773    /* ctx->Extensions.MESA_ycbcr_texture */
 774    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = GL_TRUE;
 775    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = GL_TRUE;
 776
 777    /* GL_3DFX_texture_compression_FXT1 */
 778    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = GL_TRUE;
 779    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = GL_TRUE;
 780
 781    /* GL_EXT_texture_compression_s3tc */
 782    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = GL_TRUE;
 783    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = GL_TRUE;
 784    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = GL_TRUE;
 785    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = GL_TRUE;
 786
 787 #ifndef I915
 788    /* GL_ARB_texture_compression_rgtc */
 789    ctx->TextureFormatSupported[MESA_FORMAT_RED_RGTC1] = GL_TRUE;
 790    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RED_RGTC1] = GL_TRUE;
 791    ctx->TextureFormatSupported[MESA_FORMAT_RG_RGTC2] = GL_TRUE;
 792    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG_RGTC2] = GL_TRUE;
 793
 794    /* GL_ARB_texture_rg */
 795    ctx->TextureFormatSupported[MESA_FORMAT_R8] = GL_TRUE;
 796    ctx->TextureFormatSupported[MESA_FORMAT_R16] = GL_TRUE;
 797    ctx->TextureFormatSupported[MESA_FORMAT_RG88] = GL_TRUE;
 798    ctx->TextureFormatSupported[MESA_FORMAT_RG1616] = GL_TRUE;
 799
 800    /* GL_MESA_texture_signed_rgba / GL_EXT_texture_snorm */
 801    ctx->TextureFormatSupported[MESA_FORMAT_DUDV8] = GL_TRUE;
 802    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RGBA8888_REV] = GL_TRUE;
 803    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R8] = GL_TRUE;
 804    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG88_REV] = GL_TRUE;
 805    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R16] = GL_TRUE;
 806    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_GR1616] = GL_TRUE;
 807
 808    /* GL_EXT_texture_sRGB */
 809    ctx->TextureFormatSupported[MESA_FORMAT_SARGB8] = GL_TRUE;
 810    if (intel->gen >= 5 || intel->is_g4x)
 811       ctx->TextureFormatSupported[MESA_FORMAT_SRGB_DXT1] = GL_TRUE;
 812    ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT1] = GL_TRUE;
 813    ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT3] = GL_TRUE;
 814    ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT5] = GL_TRUE;
 815    if (intel->has_luminance_srgb) {
 816       ctx->TextureFormatSupported[MESA_FORMAT_SL8] = GL_TRUE;
 817       ctx->TextureFormatSupported[MESA_FORMAT_SLA8] = GL_TRUE;
 818    }
 819
 820 #ifdef TEXTURE_FLOAT_ENABLED
 821    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FLOAT32] = GL_TRUE;
 822    ctx->TextureFormatSupported[MESA_FORMAT_RG_FLOAT32] = GL_TRUE;
 823    ctx->TextureFormatSupported[MESA_FORMAT_R_FLOAT32] = GL_TRUE;
 824    ctx->TextureFormatSupported[MESA_FORMAT_INTENSITY_FLOAT32] = GL_TRUE;
 825    ctx->TextureFormatSupported[MESA_FORMAT_LUMINANCE_FLOAT32] = GL_TRUE;
 826    ctx->TextureFormatSupported[MESA_FORMAT_ALPHA_FLOAT32] = GL_TRUE;
 827    ctx->TextureFormatSupported[MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32] = GL_TRUE;
 828 #endif
 829
 830 #endif /* !I915 */
 831
 832    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 833                        sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
 834    if (intel->gen < 4)
 835       intel->maxBatchSize = 4096;
 836    else
 837       intel->maxBatchSize = sizeof(intel->batch.map);
 838
 839    intel->bufmgr = intelScreen->bufmgr;
 840
 841    bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 842    switch (bo_reuse_mode) {
 843    case DRI_CONF_BO_REUSE_DISABLED:
 844       break;
 845    case DRI_CONF_BO_REUSE_ALL:
 846       intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 847       break;
 848    }
 849
 850    /* This doesn't yet catch all non-conformant rendering, but it's a
 851     * start.
 852     */
 853    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 854       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 855       if (value > 0) {
 856          intel->conformance_mode = value;
 857       }
 858       else {
 859          intel->conformance_mode = 1;
 860       }
 861    }
 862
 863    if (intel->conformance_mode > 0) {
 864       ctx->Const.MinLineWidth = 1.0;
 865       ctx->Const.MinLineWidthAA = 1.0;
 866       ctx->Const.MaxLineWidth = 1.0;
 867       ctx->Const.MaxLineWidthAA = 1.0;
 868       ctx->Const.LineWidthGranularity = 1.0;
 869    }
 870    else {
 871       ctx->Const.MinLineWidth = 1.0;
 872       ctx->Const.MinLineWidthAA = 1.0;
 873       ctx->Const.MaxLineWidth = 5.0;
 874       ctx->Const.MaxLineWidthAA = 5.0;
 875       ctx->Const.LineWidthGranularity = 0.5;
 876    }
 877
 878    ctx->Const.MinPointSize = 1.0;
 879    ctx->Const.MinPointSizeAA = 1.0;
 880    ctx->Const.MaxPointSize = 255.0;
 881    ctx->Const.MaxPointSizeAA = 3.0;
 882    ctx->Const.PointSizeGranularity = 1.0;
 883
 884    ctx->Const.MaxSamples = 1.0;
 885
 886    /* reinitialize the context point state.
 887     * It depend on constants in __struct gl_contextRec::Const
 888     */
 889    _mesa_init_point(ctx);
 890
 891    if (intel->gen >= 4) {
 892       ctx->Const.sRGBCapable = GL_TRUE;
 893       if (MAX_WIDTH > 8192)
 894          ctx->Const.MaxRenderbufferSize = 8192;
 895    } else {
 896       if (MAX_WIDTH > 2048)
 897          ctx->Const.MaxRenderbufferSize = 2048;
 898    }
 899
 900    /* Initialize the software rasterizer and helper modules. */
 901    _swrast_CreateContext(ctx);
 902    _vbo_CreateContext(ctx);
 903    _tnl_CreateContext(ctx);
 904    _swsetup_CreateContext(ctx);
 905
 906    /* Configure swrast to match hardware characteristics: */
 907    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 908    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 909
 910    _mesa_meta_init(ctx);
 911
 912    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 913    intel->hw_stipple = 1;
 914
 915    /* XXX FBO: this doesn't seem to be used anywhere */
 916    switch (mesaVis->depthBits) {
 917    case 0:                     /* what to do in this case? */
 918    case 16:
 919       intel->polygon_offset_scale = 1.0;
 920       break;
 921    case 24:
 922       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 923       break;
 924    default:
 925       assert(0);
 926       break;
 927    }
 928
 929    if (intel->gen >= 4)
 930       intel->polygon_offset_scale /= 0xffff;
 931
 932    intel->RenderIndex = ~0;
 933
 934    switch (ctx->API) {
 935    case API_OPENGL:
 936       intelInitExtensions(ctx);
 937       break;
 938    case API_OPENGLES:
 939       break;
 940    case API_OPENGLES2:
 941       intelInitExtensionsES2(ctx);
 942       break;
 943    }
 944
 945    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 946    if (INTEL_DEBUG & DEBUG_BUFMGR)
 947       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 948
 949    intel_batchbuffer_reset(intel);
 950
 951    intel_fbo_init(intel);
 952
 953    if (intel->ctx.Mesa_DXTn) {
 954       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 955       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 956    }
 957    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 958       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 959    }
 960    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 961                                                "texture_tiling");
 962    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 963
 964    intel->prim.primitive = ~0;
 965
 966    /* Force all software fallbacks */
 967    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 968       fprintf(stderr, "disabling 3D rasterization\n");
 969       intel->no_rast = 1;
 970    }
 971
 972    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 973       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 974       intel->always_flush_batch = 1;
 975    }
 976
 977    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 978       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 979       intel->always_flush_cache = 1;
 980    }
 981
 982    return GL_TRUE;
 983 }
 984
 985 void
 986 intelDestroyContext(__DRIcontext * driContextPriv)
 987 {
 988    struct intel_context *intel =
 989       (struct intel_context *) driContextPriv->driverPrivate;
 990
 991    assert(intel);               /* should never be null */
 992    if (intel) {
 993       INTEL_FIREVERTICES(intel);
 994
 995       _mesa_meta_free(&intel->ctx);
 996
 997       intel->vtbl.destroy(intel);
 998
 999       _swsetup_DestroyContext(&intel->ctx);
1000       _tnl_DestroyContext(&intel->ctx);
1001       _vbo_DestroyContext(&intel->ctx);
1002
1003       _swrast_DestroyContext(&intel->ctx);
1004       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
1005
1006       intel_batchbuffer_free(intel);
1007
1008       free(intel->prim.vb);
1009       intel->prim.vb = NULL;
1010       drm_intel_bo_unreference(intel->prim.vb_bo);
1011       intel->prim.vb_bo = NULL;
1012       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
1013       intel->first_post_swapbuffers_batch = NULL;
1014
1015       driDestroyOptionCache(&intel->optionCache);
1016
1017       /* free the Mesa context */
1018       _mesa_free_context_data(&intel->ctx);
1019
1020       FREE(intel);
1021       driContextPriv->driverPrivate = NULL;
1022    }
1023 }
1024
1025 GLboolean
1026 intelUnbindContext(__DRIcontext * driContextPriv)
1027 {
1028    /* Unset current context and dispath table */
1029    _mesa_make_current(NULL, NULL, NULL);
1030
1031    return GL_TRUE;
1032 }
1033
1034 GLboolean
1035 intelMakeCurrent(__DRIcontext * driContextPriv,
1036                  __DRIdrawable * driDrawPriv,
1037                  __DRIdrawable * driReadPriv)
1038 {
1039    struct intel_context *intel;
1040    GET_CURRENT_CONTEXT(curCtx);
1041
1042    if (driContextPriv)
1043       intel = (struct intel_context *) driContextPriv->driverPrivate;
1044    else
1045       intel = NULL;
1046
1047    /* According to the glXMakeCurrent() man page: "Pending commands to
1048     * the previous context, if any, are flushed before it is released."
1049     * But only flush if we're actually changing contexts.
1050     */
1051    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
1052       _mesa_flush(curCtx);
1053    }
1054
1055    if (driContextPriv) {
1056       struct gl_framebuffer *fb, *readFb;
1057
1058       if (driDrawPriv == NULL && driReadPriv == NULL) {
1059          fb = _mesa_get_incomplete_framebuffer();
1060          readFb = _mesa_get_incomplete_framebuffer();
1061       } else {
1062          fb = driDrawPriv->driverPrivate;
1063          readFb = driReadPriv->driverPrivate;
1064          driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
1065          driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
1066       }
1067
1068       intel_prepare_render(intel);
1069       _mesa_make_current(&intel->ctx, fb, readFb);
1070
1071       /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
1072        * is NULL at that point.  We can't call _mesa_makecurrent()
1073        * first, since we need the buffer size for the initial
1074        * viewport.  So just call intel_draw_buffer() again here. */
1075       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
1076    }
1077    else {
1078       _mesa_make_current(NULL, NULL, NULL);
1079    }
1080
1081    return GL_TRUE;
1082 }