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