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 && intel->first_post_swapbuffers_batch) {
 474       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 475       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 476       intel->first_post_swapbuffers_batch = NULL;
 477       intel->need_throttle = GL_FALSE;
 478    }
 479 }
 480
 481 static void
 482 intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 483 {
 484     struct intel_context *intel = intel_context(ctx);
 485     __DRIcontext *driContext = intel->driContext;
 486
 487     if (intel->saved_viewport)
 488         intel->saved_viewport(ctx, x, y, w, h);
 489
 490     if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 491        dri2InvalidateDrawable(driContext->driDrawablePriv);
 492        dri2InvalidateDrawable(driContext->driReadablePriv);
 493     }
 494 }
 495
 496 static const struct dri_debug_control debug_control[] = {
 497    { "tex",   DEBUG_TEXTURE},
 498    { "state", DEBUG_STATE},
 499    { "ioctl", DEBUG_IOCTL},
 500    { "blit",  DEBUG_BLIT},
 501    { "mip",   DEBUG_MIPTREE},
 502    { "fall",  DEBUG_FALLBACKS},
 503    { "verb",  DEBUG_VERBOSE},
 504    { "bat",   DEBUG_BATCH},
 505    { "pix",   DEBUG_PIXEL},
 506    { "buf",   DEBUG_BUFMGR},
 507    { "reg",   DEBUG_REGION},
 508    { "fbo",   DEBUG_FBO},
 509    { "gs",    DEBUG_GS},
 510    { "sync",  DEBUG_SYNC},
 511    { "prim",  DEBUG_PRIMS },
 512    { "vert",  DEBUG_VERTS },
 513    { "dri",   DEBUG_DRI },
 514    { "sf",    DEBUG_SF },
 515    { "san",   DEBUG_SANITY },
 516    { "sleep", DEBUG_SLEEP },
 517    { "stats", DEBUG_STATS },
 518    { "tile",  DEBUG_TILE },
 519    { "sing",  DEBUG_SINGLE_THREAD },
 520    { "thre",  DEBUG_SINGLE_THREAD },
 521    { "wm",    DEBUG_WM },
 522    { "glsl_force", DEBUG_GLSL_FORCE },
 523    { "urb",   DEBUG_URB },
 524    { "vs",    DEBUG_VS },
 525    { "clip",  DEBUG_CLIP },
 526    { NULL,    0 }
 527 };
 528
 529
 530 static void
 531 intelInvalidateState(struct gl_context * ctx, GLuint new_state)
 532 {
 533     struct intel_context *intel = intel_context(ctx);
 534
 535    _swrast_InvalidateState(ctx, new_state);
 536    _swsetup_InvalidateState(ctx, new_state);
 537    _vbo_InvalidateState(ctx, new_state);
 538    _tnl_InvalidateState(ctx, new_state);
 539    _tnl_invalidate_vertex_state(ctx, new_state);
 540
 541    intel->NewGLState |= new_state;
 542
 543    if (intel->vtbl.invalidate_state)
 544       intel->vtbl.invalidate_state( intel, new_state );
 545 }
 546
 547 void
 548 intel_flush(struct gl_context *ctx)
 549 {
 550    struct intel_context *intel = intel_context(ctx);
 551
 552    if (intel->Fallback)
 553       _swrast_flush(ctx);
 554
 555    if (intel->gen < 4)
 556       INTEL_FIREVERTICES(intel);
 557
 558    if (intel->batch->map != intel->batch->ptr)
 559       intel_batchbuffer_flush(intel->batch);
 560 }
 561
 562 static void
 563 intel_glFlush(struct gl_context *ctx)
 564 {
 565    struct intel_context *intel = intel_context(ctx);
 566
 567    intel_flush(ctx);
 568    intel_flush_front(ctx);
 569    intel->need_throttle = GL_TRUE;
 570 }
 571
 572 void
 573 intelFinish(struct gl_context * ctx)
 574 {
 575    struct gl_framebuffer *fb = ctx->DrawBuffer;
 576    int i;
 577
 578    intel_flush(ctx);
 579    intel_flush_front(ctx);
 580
 581    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 582        struct intel_renderbuffer *irb;
 583
 584        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 585
 586        if (irb && irb->region)
 587           drm_intel_bo_wait_rendering(irb->region->buffer);
 588    }
 589    if (fb->_DepthBuffer) {
 590       /* XXX: Wait on buffer idle */
 591    }
 592 }
 593
 594 void
 595 intelInitDriverFunctions(struct dd_function_table *functions)
 596 {
 597    _mesa_init_driver_functions(functions);
 598
 599    functions->Flush = intel_glFlush;
 600    functions->Finish = intelFinish;
 601    functions->GetString = intelGetString;
 602    functions->UpdateState = intelInvalidateState;
 603
 604    intelInitTextureFuncs(functions);
 605    intelInitTextureImageFuncs(functions);
 606    intelInitTextureSubImageFuncs(functions);
 607    intelInitTextureCopyImageFuncs(functions);
 608    intelInitStateFuncs(functions);
 609    intelInitClearFuncs(functions);
 610    intelInitBufferFuncs(functions);
 611    intelInitPixelFuncs(functions);
 612    intelInitBufferObjectFuncs(functions);
 613    intel_init_syncobj_functions(functions);
 614 }
 615
 616
 617 GLboolean
 618 intelInitContext(struct intel_context *intel,
 619                  int api,
 620                  const struct gl_config * mesaVis,
 621                  __DRIcontext * driContextPriv,
 622                  void *sharedContextPrivate,
 623                  struct dd_function_table *functions)
 624 {
 625    struct gl_context *ctx = &intel->ctx;
 626    struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
 627    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 628    struct intel_screen *intelScreen = sPriv->private;
 629    int bo_reuse_mode;
 630    struct gl_config visual;
 631
 632    /* we can't do anything without a connection to the device */
 633    if (intelScreen->bufmgr == NULL)
 634       return GL_FALSE;
 635
 636    /* Can't rely on invalidate events, fall back to glViewport hack */
 637    if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
 638       intel->saved_viewport = functions->Viewport;
 639       functions->Viewport = intel_viewport;
 640    }
 641
 642    if (mesaVis == NULL) {
 643       memset(&visual, 0, sizeof visual);
 644       mesaVis = &visual;
 645    }
 646
 647    if (!_mesa_initialize_context_for_api(&intel->ctx, api, mesaVis, shareCtx,
 648                                          functions, (void *) intel)) {
 649       printf("%s: failed to init mesa context\n", __FUNCTION__);
 650       return GL_FALSE;
 651    }
 652
 653    driContextPriv->driverPrivate = intel;
 654    intel->intelScreen = intelScreen;
 655    intel->driContext = driContextPriv;
 656    intel->driFd = sPriv->fd;
 657
 658    intel->has_xrgb_textures = GL_TRUE;
 659    if (IS_GEN6(intel->intelScreen->deviceID)) {
 660       intel->gen = 6;
 661       intel->needs_ff_sync = GL_TRUE;
 662       intel->has_luminance_srgb = GL_TRUE;
 663    } else if (IS_GEN5(intel->intelScreen->deviceID)) {
 664       intel->gen = 5;
 665       intel->needs_ff_sync = GL_TRUE;
 666       intel->has_luminance_srgb = GL_TRUE;
 667    } else if (IS_965(intel->intelScreen->deviceID)) {
 668       intel->gen = 4;
 669       if (IS_G4X(intel->intelScreen->deviceID)) {
 670           intel->has_luminance_srgb = GL_TRUE;
 671           intel->is_g4x = GL_TRUE;
 672       }
 673    } else if (IS_9XX(intel->intelScreen->deviceID)) {
 674       intel->gen = 3;
 675       if (IS_945(intel->intelScreen->deviceID)) {
 676          intel->is_945 = GL_TRUE;
 677       }
 678    } else {
 679       intel->gen = 2;
 680       if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
 681           intel->intelScreen->deviceID == PCI_CHIP_845_G) {
 682          intel->has_xrgb_textures = GL_FALSE;
 683       }
 684    }
 685
 686    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 687                        sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
 688    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 689       intel->maxBatchSize = 4096;
 690    else
 691       intel->maxBatchSize = BATCH_SZ;
 692
 693    intel->bufmgr = intelScreen->bufmgr;
 694
 695    bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 696    switch (bo_reuse_mode) {
 697    case DRI_CONF_BO_REUSE_DISABLED:
 698       break;
 699    case DRI_CONF_BO_REUSE_ALL:
 700       intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 701       break;
 702    }
 703
 704    /* This doesn't yet catch all non-conformant rendering, but it's a
 705     * start.
 706     */
 707    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 708       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 709       if (value > 0) {
 710          intel->conformance_mode = value;
 711       }
 712       else {
 713          intel->conformance_mode = 1;
 714       }
 715    }
 716
 717    if (intel->conformance_mode > 0) {
 718       ctx->Const.MinLineWidth = 1.0;
 719       ctx->Const.MinLineWidthAA = 1.0;
 720       ctx->Const.MaxLineWidth = 1.0;
 721       ctx->Const.MaxLineWidthAA = 1.0;
 722       ctx->Const.LineWidthGranularity = 1.0;
 723    }
 724    else {
 725       ctx->Const.MinLineWidth = 1.0;
 726       ctx->Const.MinLineWidthAA = 1.0;
 727       ctx->Const.MaxLineWidth = 5.0;
 728       ctx->Const.MaxLineWidthAA = 5.0;
 729       ctx->Const.LineWidthGranularity = 0.5;
 730    }
 731
 732    ctx->Const.MinPointSize = 1.0;
 733    ctx->Const.MinPointSizeAA = 1.0;
 734    ctx->Const.MaxPointSize = 255.0;
 735    ctx->Const.MaxPointSizeAA = 3.0;
 736    ctx->Const.PointSizeGranularity = 1.0;
 737
 738    ctx->Const.MaxSamples = 1.0;
 739
 740    /* reinitialize the context point state.
 741     * It depend on constants in __struct gl_contextRec::Const
 742     */
 743    _mesa_init_point(ctx);
 744
 745    meta_init_metaops(ctx, &intel->meta);
 746    if (intel->gen >= 4) {
 747       if (MAX_WIDTH > 8192)
 748          ctx->Const.MaxRenderbufferSize = 8192;
 749    } else {
 750       if (MAX_WIDTH > 2048)
 751          ctx->Const.MaxRenderbufferSize = 2048;
 752    }
 753
 754    /* Initialize the software rasterizer and helper modules. */
 755    _swrast_CreateContext(ctx);
 756    _vbo_CreateContext(ctx);
 757    _tnl_CreateContext(ctx);
 758    _swsetup_CreateContext(ctx);
 759
 760    /* Configure swrast to match hardware characteristics: */
 761    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 762    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 763
 764    _mesa_meta_init(ctx);
 765
 766    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 767    intel->hw_stipple = 1;
 768
 769    /* XXX FBO: this doesn't seem to be used anywhere */
 770    switch (mesaVis->depthBits) {
 771    case 0:                     /* what to do in this case? */
 772    case 16:
 773       intel->polygon_offset_scale = 1.0;
 774       break;
 775    case 24:
 776       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 777       break;
 778    default:
 779       assert(0);
 780       break;
 781    }
 782
 783    if (intel->gen >= 4)
 784       intel->polygon_offset_scale /= 0xffff;
 785
 786    intel->RenderIndex = ~0;
 787
 788    switch (ctx->API) {
 789    case API_OPENGL:
 790       intelInitExtensions(ctx);
 791       break;
 792    case API_OPENGLES:
 793       break;
 794    case API_OPENGLES2:
 795       intelInitExtensionsES2(ctx);
 796       break;
 797    }
 798
 799    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 800    if (INTEL_DEBUG & DEBUG_BUFMGR)
 801       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 802
 803    /* XXX force SIMD8 kernel for Sandybridge before we fixed
 804       SIMD16 interpolation. */
 805    if (intel->gen == 6)
 806        INTEL_DEBUG |= DEBUG_GLSL_FORCE;
 807
 808    intel->batch = intel_batchbuffer_alloc(intel);
 809
 810    intel_fbo_init(intel);
 811
 812    if (intel->ctx.Mesa_DXTn) {
 813       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 814       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 815    }
 816    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 817       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 818    }
 819    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 820                                                "texture_tiling");
 821    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 822
 823    intel->prim.primitive = ~0;
 824
 825    /* Force all software fallbacks */
 826    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 827       fprintf(stderr, "disabling 3D rasterization\n");
 828       intel->no_rast = 1;
 829    }
 830
 831    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 832       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 833       intel->always_flush_batch = 1;
 834    }
 835
 836    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 837       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 838       intel->always_flush_cache = 1;
 839    }
 840
 841    /* Disable all hardware rendering (skip emitting batches and fences/waits
 842     * to the kernel)
 843     */
 844    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 845
 846    return GL_TRUE;
 847 }
 848
 849 void
 850 intelDestroyContext(__DRIcontext * driContextPriv)
 851 {
 852    struct intel_context *intel =
 853       (struct intel_context *) driContextPriv->driverPrivate;
 854
 855    assert(intel);               /* should never be null */
 856    if (intel) {
 857       INTEL_FIREVERTICES(intel);
 858
 859       _mesa_meta_free(&intel->ctx);
 860
 861       meta_destroy_metaops(&intel->meta);
 862
 863       intel->vtbl.destroy(intel);
 864
 865       _swsetup_DestroyContext(&intel->ctx);
 866       _tnl_DestroyContext(&intel->ctx);
 867       _vbo_DestroyContext(&intel->ctx);
 868
 869       _swrast_DestroyContext(&intel->ctx);
 870       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 871
 872       intel_batchbuffer_free(intel->batch);
 873       intel->batch = NULL;
 874
 875       free(intel->prim.vb);
 876       intel->prim.vb = NULL;
 877       drm_intel_bo_unreference(intel->prim.vb_bo);
 878       intel->prim.vb_bo = NULL;
 879       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 880       intel->first_post_swapbuffers_batch = NULL;
 881
 882       driDestroyOptionCache(&intel->optionCache);
 883
 884       /* free the Mesa context */
 885       _mesa_free_context_data(&intel->ctx);
 886
 887       FREE(intel);
 888       driContextPriv->driverPrivate = NULL;
 889    }
 890 }
 891
 892 GLboolean
 893 intelUnbindContext(__DRIcontext * driContextPriv)
 894 {
 895    /* Unset current context and dispath table */
 896    _mesa_make_current(NULL, NULL, NULL);
 897
 898    return GL_TRUE;
 899 }
 900
 901 GLboolean
 902 intelMakeCurrent(__DRIcontext * driContextPriv,
 903                  __DRIdrawable * driDrawPriv,
 904                  __DRIdrawable * driReadPriv)
 905 {
 906    struct intel_context *intel;
 907    GET_CURRENT_CONTEXT(curCtx);
 908
 909    if (driContextPriv)
 910       intel = (struct intel_context *) driContextPriv->driverPrivate;
 911    else
 912       intel = NULL;
 913
 914    /* According to the glXMakeCurrent() man page: "Pending commands to
 915     * the previous context, if any, are flushed before it is released."
 916     * But only flush if we're actually changing contexts.
 917     */
 918    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 919       _mesa_flush(curCtx);
 920    }
 921
 922    if (driContextPriv) {
 923       struct gl_framebuffer *fb, *readFb;
 924
 925       if (driDrawPriv == NULL && driReadPriv == NULL) {
 926          fb = _mesa_get_incomplete_framebuffer();
 927          readFb = _mesa_get_incomplete_framebuffer();
 928       } else {
 929          fb = driDrawPriv->driverPrivate;
 930          readFb = driReadPriv->driverPrivate;
 931          driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
 932          driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
 933       }
 934
 935       intel_prepare_render(intel);
 936       _mesa_make_current(&intel->ctx, fb, readFb);
 937
 938       /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
 939        * is NULL at that point.  We can't call _mesa_makecurrent()
 940        * first, since we need the buffer size for the initial
 941        * viewport.  So just call intel_draw_buffer() again here. */
 942       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 943    }
 944    else {
 945       _mesa_make_current(NULL, NULL, NULL);
 946    }
 947
 948    return GL_TRUE;
 949 }