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       case PCI_CHIP_B43_G1:
 159          chipset = "Intel(R) B43";
 160          break;
 161       case PCI_CHIP_ILD_G:
 162          chipset = "Intel(R) Ironlake Desktop";
 163          break;
 164       case PCI_CHIP_ILM_G:
 165          chipset = "Intel(R) Ironlake Mobile";
 166          break;
 167       case PCI_CHIP_SANDYBRIDGE_GT1:
 168       case PCI_CHIP_SANDYBRIDGE_GT2:
 169       case PCI_CHIP_SANDYBRIDGE_GT2_PLUS:
 170          chipset = "Intel(R) Sandybridge Desktop";
 171          break;
 172       case PCI_CHIP_SANDYBRIDGE_M_GT1:
 173       case PCI_CHIP_SANDYBRIDGE_M_GT2:
 174       case PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS:
 175          chipset = "Intel(R) Sandybridge Mobile";
 176          break;
 177       case PCI_CHIP_SANDYBRIDGE_S:
 178          chipset = "Intel(R) Sandybridge Server";
 179          break;
 180       default:
 181          chipset = "Unknown Intel Chipset";
 182          break;
 183       }
 184
 185       (void) driGetRendererString(buffer, chipset, DRIVER_DATE_GEM, 0);
 186       return (GLubyte *) buffer;
 187
 188    default:
 189       return NULL;
 190    }
 191 }
 192
 193 static void
 194 intel_flush_front(struct gl_context *ctx)
 195 {
 196    struct intel_context *intel = intel_context(ctx);
 197     __DRIcontext *driContext = intel->driContext;
 198     __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 199
 200    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 201       if (screen->dri2.loader &&
 202           (screen->dri2.loader->base.version >= 2)
 203           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 204           driContext->driDrawablePriv &&
 205           driContext->driDrawablePriv->loaderPrivate) {
 206          (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv,
 207                                                   driContext->driDrawablePriv->loaderPrivate);
 208
 209          /* We set the dirty bit in intel_prepare_render() if we're
 210           * front buffer rendering once we get there.
 211           */
 212          intel->front_buffer_dirty = GL_FALSE;
 213       }
 214    }
 215 }
 216
 217 static unsigned
 218 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 219 {
 220    return _mesa_get_format_bytes(rb->Base.Format) * 8;
 221 }
 222
 223 void
 224 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 225 {
 226    struct gl_framebuffer *fb = drawable->driverPrivate;
 227    struct intel_renderbuffer *rb;
 228    struct intel_region *region, *depth_region;
 229    struct intel_context *intel = context->driverPrivate;
 230    struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
 231    __DRIbuffer *buffers = NULL;
 232    __DRIscreen *screen;
 233    int i, count;
 234    unsigned int attachments[10];
 235    const char *region_name;
 236
 237    /* If we're rendering to the fake front buffer, make sure all the
 238     * pending drawing has landed on the real front buffer.  Otherwise
 239     * when we eventually get to DRI2GetBuffersWithFormat the stale
 240     * real front buffer contents will get copied to the new fake front
 241     * buffer.
 242     */
 243    if (intel->is_front_buffer_rendering) {
 244       intel_flush(&intel->ctx);
 245       intel_flush_front(&intel->ctx);
 246    }
 247
 248    /* Set this up front, so that in case our buffers get invalidated
 249     * while we're getting new buffers, we don't clobber the stamp and
 250     * thus ignore the invalidate. */
 251    drawable->lastStamp = drawable->dri2.stamp;
 252
 253    if (unlikely(INTEL_DEBUG & DEBUG_DRI))
 254       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 255
 256    screen = intel->intelScreen->driScrnPriv;
 257
 258    if (screen->dri2.loader
 259        && (screen->dri2.loader->base.version > 2)
 260        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 261
 262       front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 263       back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 264       depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 265       stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 266
 267       i = 0;
 268       if ((intel->is_front_buffer_rendering ||
 269            intel->is_front_buffer_reading ||
 270            !back_rb) && front_rb) {
 271          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 272          attachments[i++] = intel_bits_per_pixel(front_rb);
 273       }
 274
 275       if (back_rb) {
 276          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 277          attachments[i++] = intel_bits_per_pixel(back_rb);
 278       }
 279
 280       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 281          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 282          attachments[i++] = intel_bits_per_pixel(depth_rb);
 283       } else if (depth_rb != NULL) {
 284          attachments[i++] = __DRI_BUFFER_DEPTH;
 285          attachments[i++] = intel_bits_per_pixel(depth_rb);
 286       } else if (stencil_rb != NULL) {
 287          attachments[i++] = __DRI_BUFFER_STENCIL;
 288          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 289       }
 290
 291       buffers =
 292          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 293                                                       &drawable->w,
 294                                                       &drawable->h,
 295                                                       attachments, i / 2,
 296                                                       &count,
 297                                                       drawable->loaderPrivate);
 298    } else if (screen->dri2.loader) {
 299       i = 0;
 300       if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
 301          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 302       if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
 303          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 304       if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
 305          attachments[i++] = __DRI_BUFFER_DEPTH;
 306       if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
 307          attachments[i++] = __DRI_BUFFER_STENCIL;
 308
 309       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 310                                                    &drawable->w,
 311                                                    &drawable->h,
 312                                                    attachments, i,
 313                                                    &count,
 314                                                    drawable->loaderPrivate);
 315    }
 316
 317    if (buffers == NULL)
 318       return;
 319
 320    drawable->x = 0;
 321    drawable->y = 0;
 322    drawable->backX = 0;
 323    drawable->backY = 0;
 324    drawable->numClipRects = 1;
 325    drawable->pClipRects[0].x1 = 0;
 326    drawable->pClipRects[0].y1 = 0;
 327    drawable->pClipRects[0].x2 = drawable->w;
 328    drawable->pClipRects[0].y2 = drawable->h;
 329    drawable->numBackClipRects = 1;
 330    drawable->pBackClipRects[0].x1 = 0;
 331    drawable->pBackClipRects[0].y1 = 0;
 332    drawable->pBackClipRects[0].x2 = drawable->w;
 333    drawable->pBackClipRects[0].y2 = drawable->h;
 334
 335    depth_region = NULL;
 336    for (i = 0; i < count; i++) {
 337        switch (buffers[i].attachment) {
 338        case __DRI_BUFFER_FRONT_LEFT:
 339            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 340            region_name = "dri2 front buffer";
 341            break;
 342
 343        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 344            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 345            region_name = "dri2 fake front buffer";
 346            break;
 347
 348        case __DRI_BUFFER_BACK_LEFT:
 349            rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 350            region_name = "dri2 back buffer";
 351            break;
 352
 353        case __DRI_BUFFER_DEPTH:
 354            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 355            region_name = "dri2 depth buffer";
 356            break;
 357
 358        case __DRI_BUFFER_DEPTH_STENCIL:
 359            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 360            region_name = "dri2 depth / stencil buffer";
 361            break;
 362
 363        case __DRI_BUFFER_STENCIL:
 364            rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 365            region_name = "dri2 stencil buffer";
 366            break;
 367
 368        case __DRI_BUFFER_ACCUM:
 369        default:
 370            fprintf(stderr,
 371                    "unhandled buffer attach event, attachment type %d\n",
 372                    buffers[i].attachment);
 373            return;
 374        }
 375
 376        if (rb == NULL)
 377           continue;
 378
 379        if (rb->region && rb->region->name == buffers[i].name)
 380              continue;
 381
 382        if (unlikely(INTEL_DEBUG & DEBUG_DRI))
 383           fprintf(stderr,
 384                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 385                   buffers[i].name, buffers[i].attachment,
 386                   buffers[i].cpp, buffers[i].pitch);
 387
 388        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 389           if (unlikely(INTEL_DEBUG & DEBUG_DRI))
 390              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 391           intel_region_reference(&region, depth_region);
 392        }
 393        else
 394           region = intel_region_alloc_for_handle(intel->intelScreen,
 395                                                  buffers[i].cpp,
 396                                                  drawable->w,
 397                                                  drawable->h,
 398                                                  buffers[i].pitch / buffers[i].cpp,
 399                                                  buffers[i].name,
 400                                                  region_name);
 401
 402        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 403           depth_region = region;
 404
 405        intel_renderbuffer_set_region(intel, rb, region);
 406        intel_region_release(&region);
 407
 408        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 409           rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 410           if (rb != NULL) {
 411              struct intel_region *stencil_region = NULL;
 412
 413              if (rb->region && rb->region->name == buffers[i].name)
 414                    continue;
 415
 416              intel_region_reference(&stencil_region, region);
 417              intel_renderbuffer_set_region(intel, rb, stencil_region);
 418              intel_region_release(&stencil_region);
 419           }
 420        }
 421    }
 422
 423    driUpdateFramebufferSize(&intel->ctx, drawable);
 424 }
 425
 426 /**
 427  * intel_prepare_render should be called anywhere that curent read/drawbuffer
 428  * state is required.
 429  */
 430 void
 431 intel_prepare_render(struct intel_context *intel)
 432 {
 433    __DRIcontext *driContext = intel->driContext;
 434    __DRIdrawable *drawable;
 435
 436    drawable = driContext->driDrawablePriv;
 437    if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
 438       if (drawable->lastStamp != drawable->dri2.stamp)
 439          intel_update_renderbuffers(driContext, drawable);
 440       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 441       driContext->dri2.draw_stamp = drawable->dri2.stamp;
 442    }
 443
 444    drawable = driContext->driReadablePriv;
 445    if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
 446       if (drawable->lastStamp != drawable->dri2.stamp)
 447          intel_update_renderbuffers(driContext, drawable);
 448       driContext->dri2.read_stamp = drawable->dri2.stamp;
 449    }
 450
 451    /* If we're currently rendering to the front buffer, the rendering
 452     * that will happen next will probably dirty the front buffer.  So
 453     * mark it as dirty here.
 454     */
 455    if (intel->is_front_buffer_rendering)
 456       intel->front_buffer_dirty = GL_TRUE;
 457
 458    /* Wait for the swapbuffers before the one we just emitted, so we
 459     * don't get too many swaps outstanding for apps that are GPU-heavy
 460     * but not CPU-heavy.
 461     *
 462     * We're using intelDRI2Flush (called from the loader before
 463     * swapbuffer) and glFlush (for front buffer rendering) as the
 464     * indicator that a frame is done and then throttle when we get
 465     * here as we prepare to render the next frame.  At this point for
 466     * round trips for swap/copy and getting new buffers are done and
 467     * we'll spend less time waiting on the GPU.
 468     *
 469     * Unfortunately, we don't have a handle to the batch containing
 470     * the swap, and getting our hands on that doesn't seem worth it,
 471     * so we just us the first batch we emitted after the last swap.
 472     */
 473    if (intel->need_throttle) {
 474        drmCommandNone(intel->driFd, DRM_I915_GEM_THROTTLE);
 475        intel->need_throttle = GL_FALSE;
 476    }
 477 }
 478
 479 static void
 480 intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 481 {
 482     struct intel_context *intel = intel_context(ctx);
 483     __DRIcontext *driContext = intel->driContext;
 484
 485     if (intel->saved_viewport)
 486         intel->saved_viewport(ctx, x, y, w, h);
 487
 488     if (ctx->DrawBuffer->Name == 0) {
 489        dri2InvalidateDrawable(driContext->driDrawablePriv);
 490        dri2InvalidateDrawable(driContext->driReadablePriv);
 491     }
 492 }
 493
 494 static const struct dri_debug_control debug_control[] = {
 495    { "tex",   DEBUG_TEXTURE},
 496    { "state", DEBUG_STATE},
 497    { "ioctl", DEBUG_IOCTL},
 498    { "blit",  DEBUG_BLIT},
 499    { "mip",   DEBUG_MIPTREE},
 500    { "fall",  DEBUG_FALLBACKS},
 501    { "verb",  DEBUG_VERBOSE},
 502    { "bat",   DEBUG_BATCH},
 503    { "pix",   DEBUG_PIXEL},
 504    { "buf",   DEBUG_BUFMGR},
 505    { "reg",   DEBUG_REGION},
 506    { "fbo",   DEBUG_FBO},
 507    { "gs",    DEBUG_GS},
 508    { "sync",  DEBUG_SYNC},
 509    { "prim",  DEBUG_PRIMS },
 510    { "vert",  DEBUG_VERTS },
 511    { "dri",   DEBUG_DRI },
 512    { "sf",    DEBUG_SF },
 513    { "san",   DEBUG_SANITY },
 514    { "sleep", DEBUG_SLEEP },
 515    { "stats", DEBUG_STATS },
 516    { "tile",  DEBUG_TILE },
 517    { "sing",  DEBUG_SINGLE_THREAD },
 518    { "thre",  DEBUG_SINGLE_THREAD },
 519    { "wm",    DEBUG_WM },
 520    { "urb",   DEBUG_URB },
 521    { "vs",    DEBUG_VS },
 522    { "clip",  DEBUG_CLIP },
 523    { NULL,    0 }
 524 };
 525
 526
 527 static void
 528 intelInvalidateState(struct gl_context * ctx, GLuint new_state)
 529 {
 530     struct intel_context *intel = intel_context(ctx);
 531
 532    _swrast_InvalidateState(ctx, new_state);
 533    _swsetup_InvalidateState(ctx, new_state);
 534    _vbo_InvalidateState(ctx, new_state);
 535    _tnl_InvalidateState(ctx, new_state);
 536    _tnl_invalidate_vertex_state(ctx, new_state);
 537
 538    intel->NewGLState |= new_state;
 539
 540    if (intel->vtbl.invalidate_state)
 541       intel->vtbl.invalidate_state( intel, new_state );
 542 }
 543
 544 void
 545 intel_flush(struct gl_context *ctx)
 546 {
 547    struct intel_context *intel = intel_context(ctx);
 548
 549    if (intel->Fallback)
 550       _swrast_flush(ctx);
 551
 552    if (intel->gen < 4)
 553       INTEL_FIREVERTICES(intel);
 554
 555    if (intel->batch.used)
 556       intel_batchbuffer_flush(intel);
 557 }
 558
 559 static void
 560 intel_glFlush(struct gl_context *ctx)
 561 {
 562    struct intel_context *intel = intel_context(ctx);
 563
 564    intel_flush(ctx);
 565    intel_flush_front(ctx);
 566    if (intel->is_front_buffer_rendering)
 567       intel->need_throttle = GL_TRUE;
 568 }
 569
 570 void
 571 intelFinish(struct gl_context * ctx)
 572 {
 573    struct gl_framebuffer *fb = ctx->DrawBuffer;
 574    int i;
 575
 576    intel_flush(ctx);
 577    intel_flush_front(ctx);
 578
 579    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 580        struct intel_renderbuffer *irb;
 581
 582        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 583
 584        if (irb && irb->region && irb->region->buffer)
 585           drm_intel_bo_wait_rendering(irb->region->buffer);
 586    }
 587    if (fb->_DepthBuffer) {
 588       /* XXX: Wait on buffer idle */
 589    }
 590 }
 591
 592 void
 593 intelInitDriverFunctions(struct dd_function_table *functions)
 594 {
 595    _mesa_init_driver_functions(functions);
 596
 597    functions->Flush = intel_glFlush;
 598    functions->Finish = intelFinish;
 599    functions->GetString = intelGetString;
 600    functions->UpdateState = intelInvalidateState;
 601
 602    intelInitTextureFuncs(functions);
 603    intelInitTextureImageFuncs(functions);
 604    intelInitTextureSubImageFuncs(functions);
 605    intelInitTextureCopyImageFuncs(functions);
 606    intelInitStateFuncs(functions);
 607    intelInitClearFuncs(functions);
 608    intelInitBufferFuncs(functions);
 609    intelInitPixelFuncs(functions);
 610    intelInitBufferObjectFuncs(functions);
 611    intel_init_syncobj_functions(functions);
 612 }
 613
 614
 615 GLboolean
 616 intelInitContext(struct intel_context *intel,
 617                  int api,
 618                  const struct gl_config * mesaVis,
 619                  __DRIcontext * driContextPriv,
 620                  void *sharedContextPrivate,
 621                  struct dd_function_table *functions)
 622 {
 623    struct gl_context *ctx = &intel->ctx;
 624    struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
 625    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 626    struct intel_screen *intelScreen = sPriv->private;
 627    int bo_reuse_mode;
 628    struct gl_config visual;
 629
 630    /* we can't do anything without a connection to the device */
 631    if (intelScreen->bufmgr == NULL)
 632       return GL_FALSE;
 633
 634    /* Can't rely on invalidate events, fall back to glViewport hack */
 635    if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
 636       intel->saved_viewport = functions->Viewport;
 637       functions->Viewport = intel_viewport;
 638    }
 639
 640    if (mesaVis == NULL) {
 641       memset(&visual, 0, sizeof visual);
 642       mesaVis = &visual;
 643    }
 644
 645    if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
 646                                  functions, (void *) intel)) {
 647       printf("%s: failed to init mesa context\n", __FUNCTION__);
 648       return GL_FALSE;
 649    }
 650
 651    driContextPriv->driverPrivate = intel;
 652    intel->intelScreen = intelScreen;
 653    intel->driContext = driContextPriv;
 654    intel->driFd = sPriv->fd;
 655
 656    intel->has_xrgb_textures = GL_TRUE;
 657    if (IS_GEN6(intel->intelScreen->deviceID)) {
 658       intel->gen = 6;
 659       intel->needs_ff_sync = GL_TRUE;
 660       intel->has_luminance_srgb = GL_TRUE;
 661    } else if (IS_GEN5(intel->intelScreen->deviceID)) {
 662       intel->gen = 5;
 663       intel->needs_ff_sync = GL_TRUE;
 664       intel->has_luminance_srgb = GL_TRUE;
 665    } else if (IS_965(intel->intelScreen->deviceID)) {
 666       intel->gen = 4;
 667       if (IS_G4X(intel->intelScreen->deviceID)) {
 668           intel->has_luminance_srgb = GL_TRUE;
 669           intel->is_g4x = GL_TRUE;
 670       }
 671    } else if (IS_9XX(intel->intelScreen->deviceID)) {
 672       intel->gen = 3;
 673       if (IS_945(intel->intelScreen->deviceID)) {
 674          intel->is_945 = GL_TRUE;
 675       }
 676    } else {
 677       intel->gen = 2;
 678       if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
 679           intel->intelScreen->deviceID == PCI_CHIP_845_G) {
 680          intel->has_xrgb_textures = GL_FALSE;
 681       }
 682    }
 683
 684    memset(&ctx->TextureFormatSupported, 0,
 685           sizeof(ctx->TextureFormatSupported));
 686    ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = GL_TRUE;
 687    if (intel->has_xrgb_textures)
 688       ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = GL_TRUE;
 689    ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = GL_TRUE;
 690    ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = GL_TRUE;
 691    ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = GL_TRUE;
 692    ctx->TextureFormatSupported[MESA_FORMAT_L8] = GL_TRUE;
 693    ctx->TextureFormatSupported[MESA_FORMAT_A8] = GL_TRUE;
 694    ctx->TextureFormatSupported[MESA_FORMAT_I8] = GL_TRUE;
 695    ctx->TextureFormatSupported[MESA_FORMAT_AL88] = GL_TRUE;
 696    if (intel->gen >= 4)
 697       ctx->TextureFormatSupported[MESA_FORMAT_AL1616] = GL_TRUE;
 698    ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = GL_TRUE;
 699    /*
 700     * This was disabled in initial FBO enabling to avoid combinations
 701     * of depth+stencil that wouldn't work together.  We since decided
 702     * that it was OK, since it's up to the app to come up with the
 703     * combo that actually works, so this can probably be re-enabled.
 704     */
 705    /*
 706    ctx->TextureFormatSupported[MESA_FORMAT_Z16] = GL_TRUE;
 707    ctx->TextureFormatSupported[MESA_FORMAT_Z24] = GL_TRUE;
 708    */
 709
 710    /* ctx->Extensions.MESA_ycbcr_texture */
 711    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = GL_TRUE;
 712    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = GL_TRUE;
 713
 714    /* GL_3DFX_texture_compression_FXT1 */
 715    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = GL_TRUE;
 716    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = GL_TRUE;
 717
 718    /* GL_EXT_texture_compression_s3tc */
 719    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = GL_TRUE;
 720    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = GL_TRUE;
 721    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = GL_TRUE;
 722    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = GL_TRUE;
 723
 724 #ifndef I915
 725    /* GL_ARB_texture_rg */
 726    ctx->TextureFormatSupported[MESA_FORMAT_R8] = GL_TRUE;
 727    ctx->TextureFormatSupported[MESA_FORMAT_R16] = GL_TRUE;
 728    ctx->TextureFormatSupported[MESA_FORMAT_RG88] = GL_TRUE;
 729    ctx->TextureFormatSupported[MESA_FORMAT_RG1616] = GL_TRUE;
 730
 731    /* GL_MESA_texture_signed_rgba / GL_EXT_texture_snorm */
 732    ctx->TextureFormatSupported[MESA_FORMAT_DUDV8] = GL_TRUE;
 733    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RGBA8888_REV] = GL_TRUE;
 734    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R8] = GL_TRUE;
 735    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_RG88_REV] = GL_TRUE;
 736    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_R16] = GL_TRUE;
 737    ctx->TextureFormatSupported[MESA_FORMAT_SIGNED_GR1616] = GL_TRUE;
 738
 739    /* GL_EXT_texture_sRGB */
 740    ctx->TextureFormatSupported[MESA_FORMAT_SARGB8] = GL_TRUE;
 741    if (intel->gen >= 5 || intel->is_g4x)
 742       ctx->TextureFormatSupported[MESA_FORMAT_SRGB_DXT1] = GL_TRUE;
 743    ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT1] = GL_TRUE;
 744    ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT3] = GL_TRUE;
 745    ctx->TextureFormatSupported[MESA_FORMAT_SRGBA_DXT5] = GL_TRUE;
 746    if (intel->has_luminance_srgb) {
 747       ctx->TextureFormatSupported[MESA_FORMAT_SL8] = GL_TRUE;
 748       ctx->TextureFormatSupported[MESA_FORMAT_SLA8] = GL_TRUE;
 749    }
 750 #endif
 751
 752    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 753                        sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
 754    if (intel->gen < 4)
 755       intel->maxBatchSize = 4096;
 756    else
 757       intel->maxBatchSize = sizeof(intel->batch.map);
 758
 759    intel->bufmgr = intelScreen->bufmgr;
 760
 761    bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 762    switch (bo_reuse_mode) {
 763    case DRI_CONF_BO_REUSE_DISABLED:
 764       break;
 765    case DRI_CONF_BO_REUSE_ALL:
 766       intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 767       break;
 768    }
 769
 770    /* This doesn't yet catch all non-conformant rendering, but it's a
 771     * start.
 772     */
 773    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 774       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 775       if (value > 0) {
 776          intel->conformance_mode = value;
 777       }
 778       else {
 779          intel->conformance_mode = 1;
 780       }
 781    }
 782
 783    if (intel->conformance_mode > 0) {
 784       ctx->Const.MinLineWidth = 1.0;
 785       ctx->Const.MinLineWidthAA = 1.0;
 786       ctx->Const.MaxLineWidth = 1.0;
 787       ctx->Const.MaxLineWidthAA = 1.0;
 788       ctx->Const.LineWidthGranularity = 1.0;
 789    }
 790    else {
 791       ctx->Const.MinLineWidth = 1.0;
 792       ctx->Const.MinLineWidthAA = 1.0;
 793       ctx->Const.MaxLineWidth = 5.0;
 794       ctx->Const.MaxLineWidthAA = 5.0;
 795       ctx->Const.LineWidthGranularity = 0.5;
 796    }
 797
 798    ctx->Const.MinPointSize = 1.0;
 799    ctx->Const.MinPointSizeAA = 1.0;
 800    ctx->Const.MaxPointSize = 255.0;
 801    ctx->Const.MaxPointSizeAA = 3.0;
 802    ctx->Const.PointSizeGranularity = 1.0;
 803
 804    ctx->Const.MaxSamples = 1.0;
 805
 806    /* reinitialize the context point state.
 807     * It depend on constants in __struct gl_contextRec::Const
 808     */
 809    _mesa_init_point(ctx);
 810
 811    if (intel->gen >= 4) {
 812       ctx->Const.sRGBCapable = GL_TRUE;
 813       if (MAX_WIDTH > 8192)
 814          ctx->Const.MaxRenderbufferSize = 8192;
 815    } else {
 816       if (MAX_WIDTH > 2048)
 817          ctx->Const.MaxRenderbufferSize = 2048;
 818    }
 819
 820    /* Initialize the software rasterizer and helper modules. */
 821    _swrast_CreateContext(ctx);
 822    _vbo_CreateContext(ctx);
 823    _tnl_CreateContext(ctx);
 824    _swsetup_CreateContext(ctx);
 825
 826    /* Configure swrast to match hardware characteristics: */
 827    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 828    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 829
 830    _mesa_meta_init(ctx);
 831
 832    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 833    intel->hw_stipple = 1;
 834
 835    /* XXX FBO: this doesn't seem to be used anywhere */
 836    switch (mesaVis->depthBits) {
 837    case 0:                     /* what to do in this case? */
 838    case 16:
 839       intel->polygon_offset_scale = 1.0;
 840       break;
 841    case 24:
 842       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 843       break;
 844    default:
 845       assert(0);
 846       break;
 847    }
 848
 849    if (intel->gen >= 4)
 850       intel->polygon_offset_scale /= 0xffff;
 851
 852    intel->RenderIndex = ~0;
 853
 854    switch (ctx->API) {
 855    case API_OPENGL:
 856       intelInitExtensions(ctx);
 857       break;
 858    case API_OPENGLES:
 859       break;
 860    case API_OPENGLES2:
 861       intelInitExtensionsES2(ctx);
 862       break;
 863    }
 864
 865    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 866    if (INTEL_DEBUG & DEBUG_BUFMGR)
 867       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 868
 869    intel_batchbuffer_reset(intel);
 870
 871    intel_fbo_init(intel);
 872
 873    if (intel->ctx.Mesa_DXTn) {
 874       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 875       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 876    }
 877    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 878       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 879    }
 880    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 881                                                "texture_tiling");
 882    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 883
 884    intel->prim.primitive = ~0;
 885
 886    /* Force all software fallbacks */
 887    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 888       fprintf(stderr, "disabling 3D rasterization\n");
 889       intel->no_rast = 1;
 890    }
 891
 892    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 893       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 894       intel->always_flush_batch = 1;
 895    }
 896
 897    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 898       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 899       intel->always_flush_cache = 1;
 900    }
 901
 902    return GL_TRUE;
 903 }
 904
 905 void
 906 intelDestroyContext(__DRIcontext * driContextPriv)
 907 {
 908    struct intel_context *intel =
 909       (struct intel_context *) driContextPriv->driverPrivate;
 910
 911    assert(intel);               /* should never be null */
 912    if (intel) {
 913       INTEL_FIREVERTICES(intel);
 914
 915       _mesa_meta_free(&intel->ctx);
 916
 917       intel->vtbl.destroy(intel);
 918
 919       _swsetup_DestroyContext(&intel->ctx);
 920       _tnl_DestroyContext(&intel->ctx);
 921       _vbo_DestroyContext(&intel->ctx);
 922
 923       _swrast_DestroyContext(&intel->ctx);
 924       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 925
 926       intel_batchbuffer_free(intel);
 927
 928       free(intel->prim.vb);
 929       intel->prim.vb = NULL;
 930       drm_intel_bo_unreference(intel->prim.vb_bo);
 931       intel->prim.vb_bo = NULL;
 932
 933       driDestroyOptionCache(&intel->optionCache);
 934
 935       /* free the Mesa context */
 936       _mesa_free_context_data(&intel->ctx);
 937
 938       FREE(intel);
 939       driContextPriv->driverPrivate = NULL;
 940    }
 941 }
 942
 943 GLboolean
 944 intelUnbindContext(__DRIcontext * driContextPriv)
 945 {
 946    /* Unset current context and dispath table */
 947    _mesa_make_current(NULL, NULL, NULL);
 948
 949    return GL_TRUE;
 950 }
 951
 952 GLboolean
 953 intelMakeCurrent(__DRIcontext * driContextPriv,
 954                  __DRIdrawable * driDrawPriv,
 955                  __DRIdrawable * driReadPriv)
 956 {
 957    struct intel_context *intel;
 958    GET_CURRENT_CONTEXT(curCtx);
 959
 960    if (driContextPriv)
 961       intel = (struct intel_context *) driContextPriv->driverPrivate;
 962    else
 963       intel = NULL;
 964
 965    /* According to the glXMakeCurrent() man page: "Pending commands to
 966     * the previous context, if any, are flushed before it is released."
 967     * But only flush if we're actually changing contexts.
 968     */
 969    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 970       _mesa_flush(curCtx);
 971    }
 972
 973    if (driContextPriv) {
 974       struct gl_framebuffer *fb, *readFb;
 975
 976       if (driDrawPriv == NULL && driReadPriv == NULL) {
 977          fb = _mesa_get_incomplete_framebuffer();
 978          readFb = _mesa_get_incomplete_framebuffer();
 979       } else {
 980          fb = driDrawPriv->driverPrivate;
 981          readFb = driReadPriv->driverPrivate;
 982          driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
 983          driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
 984       }
 985
 986       intel_prepare_render(intel);
 987       _mesa_make_current(&intel->ctx, fb, readFb);
 988
 989       /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
 990        * is NULL at that point.  We can't call _mesa_makecurrent()
 991        * first, since we need the buffer size for the initial
 992        * viewport.  So just call intel_draw_buffer() again here. */
 993       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 994    }
 995    else {
 996       _mesa_make_current(NULL, NULL, NULL);
 997    }
 998
 999    return GL_TRUE;
1000 }