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(GLcontext * ctx, GLenum name)
  71 {
  72    const struct intel_context *const intel = intel_context(ctx);
  73    const char *chipset;
  74    static char buffer[128];
  75
  76    switch (name) {
  77    case GL_VENDOR:
  78       return (GLubyte *) "Tungsten Graphics, Inc";
  79       break;
  80
  81    case GL_RENDERER:
  82       switch (intel->intelScreen->deviceID) {
  83       case PCI_CHIP_845_G:
  84          chipset = "Intel(R) 845G";
  85          break;
  86       case PCI_CHIP_I830_M:
  87          chipset = "Intel(R) 830M";
  88          break;
  89       case PCI_CHIP_I855_GM:
  90          chipset = "Intel(R) 852GM/855GM";
  91          break;
  92       case PCI_CHIP_I865_G:
  93          chipset = "Intel(R) 865G";
  94          break;
  95       case PCI_CHIP_I915_G:
  96          chipset = "Intel(R) 915G";
  97          break;
  98       case PCI_CHIP_E7221_G:
  99          chipset = "Intel (R) E7221G (i915)";
 100          break;
 101       case PCI_CHIP_I915_GM:
 102          chipset = "Intel(R) 915GM";
 103          break;
 104       case PCI_CHIP_I945_G:
 105          chipset = "Intel(R) 945G";
 106          break;
 107       case PCI_CHIP_I945_GM:
 108          chipset = "Intel(R) 945GM";
 109          break;
 110       case PCI_CHIP_I945_GME:
 111          chipset = "Intel(R) 945GME";
 112          break;
 113       case PCI_CHIP_G33_G:
 114          chipset = "Intel(R) G33";
 115          break;
 116       case PCI_CHIP_Q35_G:
 117          chipset = "Intel(R) Q35";
 118          break;
 119       case PCI_CHIP_Q33_G:
 120          chipset = "Intel(R) Q33";
 121          break;
 122       case PCI_CHIP_IGD_GM:
 123       case PCI_CHIP_IGD_G:
 124          chipset = "Intel(R) IGD";
 125          break;
 126       case PCI_CHIP_I965_Q:
 127          chipset = "Intel(R) 965Q";
 128          break;
 129       case PCI_CHIP_I965_G:
 130       case PCI_CHIP_I965_G_1:
 131          chipset = "Intel(R) 965G";
 132          break;
 133       case PCI_CHIP_I946_GZ:
 134          chipset = "Intel(R) 946GZ";
 135          break;
 136       case PCI_CHIP_I965_GM:
 137          chipset = "Intel(R) 965GM";
 138          break;
 139       case PCI_CHIP_I965_GME:
 140          chipset = "Intel(R) 965GME/GLE";
 141          break;
 142       case PCI_CHIP_GM45_GM:
 143          chipset = "Mobile Intel® GM45 Express Chipset";
 144          break;
 145       case PCI_CHIP_IGD_E_G:
 146          chipset = "Intel(R) Integrated Graphics Device";
 147          break;
 148       case PCI_CHIP_G45_G:
 149          chipset = "Intel(R) G45/G43";
 150          break;
 151       case PCI_CHIP_Q45_G:
 152          chipset = "Intel(R) Q45/Q43";
 153          break;
 154       case PCI_CHIP_G41_G:
 155          chipset = "Intel(R) G41";
 156          break;
 157       case PCI_CHIP_B43_G:
 158          chipset = "Intel(R) B43";
 159          break;
 160       case PCI_CHIP_ILD_G:
 161          chipset = "Intel(R) Ironlake Desktop";
 162          break;
 163       case PCI_CHIP_ILM_G:
 164          chipset = "Intel(R) Ironlake Mobile";
 165          break;
 166       default:
 167          chipset = "Unknown Intel Chipset";
 168          break;
 169       }
 170
 171       (void) driGetRendererString(buffer, chipset, DRIVER_DATE_GEM, 0);
 172       return (GLubyte *) buffer;
 173
 174    default:
 175       return NULL;
 176    }
 177 }
 178
 179 static void
 180 intel_flush_front(GLcontext *ctx)
 181 {
 182    struct intel_context *intel = intel_context(ctx);
 183     __DRIcontext *driContext = intel->driContext;
 184     __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 185
 186    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 187       if (screen->dri2.loader &&
 188           (screen->dri2.loader->base.version >= 2)
 189           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 190           driContext->driDrawablePriv &&
 191           driContext->driDrawablePriv->loaderPrivate) {
 192          (*screen->dri2.loader->flushFrontBuffer)(driContext->driDrawablePriv,
 193                                                   driContext->driDrawablePriv->loaderPrivate);
 194
 195          /* We set the dirty bit in intel_prepare_render() if we're
 196           * front buffer rendering once we get there.
 197           */
 198          intel->front_buffer_dirty = GL_FALSE;
 199       }
 200    }
 201 }
 202
 203 static unsigned
 204 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 205 {
 206    return _mesa_get_format_bytes(rb->Base.Format) * 8;
 207 }
 208
 209 void
 210 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 211 {
 212    struct gl_framebuffer *fb = drawable->driverPrivate;
 213    struct intel_renderbuffer *rb;
 214    struct intel_region *region, *depth_region;
 215    struct intel_context *intel = context->driverPrivate;
 216    struct intel_renderbuffer *front_rb, *back_rb, *depth_rb, *stencil_rb;
 217    __DRIbuffer *buffers = NULL;
 218    __DRIscreen *screen;
 219    int i, count;
 220    unsigned int attachments[10];
 221    const char *region_name;
 222
 223    /* If we're rendering to the fake front buffer, make sure all the
 224     * pending drawing has landed on the real front buffer.  Otherwise
 225     * when we eventually get to DRI2GetBuffersWithFormat the stale
 226     * real front buffer contents will get copied to the new fake front
 227     * buffer.
 228     */
 229    if (intel->is_front_buffer_rendering) {
 230       intel_flush(&intel->ctx);
 231       intel_flush_front(&intel->ctx);
 232    }
 233
 234    /* Set this up front, so that in case our buffers get invalidated
 235     * while we're getting new buffers, we don't clobber the stamp and
 236     * thus ignore the invalidate. */
 237    drawable->lastStamp = drawable->dri2.stamp;
 238
 239    if (INTEL_DEBUG & DEBUG_DRI)
 240       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 241
 242    screen = intel->intelScreen->driScrnPriv;
 243
 244    if (screen->dri2.loader
 245        && (screen->dri2.loader->base.version > 2)
 246        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 247
 248       front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 249       back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 250       depth_rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 251       stencil_rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 252
 253       i = 0;
 254       if ((intel->is_front_buffer_rendering ||
 255            intel->is_front_buffer_reading ||
 256            !back_rb) && front_rb) {
 257          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 258          attachments[i++] = intel_bits_per_pixel(front_rb);
 259       }
 260
 261       if (back_rb) {
 262          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 263          attachments[i++] = intel_bits_per_pixel(back_rb);
 264       }
 265
 266       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 267          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 268          attachments[i++] = intel_bits_per_pixel(depth_rb);
 269       } else if (depth_rb != NULL) {
 270          attachments[i++] = __DRI_BUFFER_DEPTH;
 271          attachments[i++] = intel_bits_per_pixel(depth_rb);
 272       } else if (stencil_rb != NULL) {
 273          attachments[i++] = __DRI_BUFFER_STENCIL;
 274          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 275       }
 276
 277       buffers =
 278          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 279                                                       &drawable->w,
 280                                                       &drawable->h,
 281                                                       attachments, i / 2,
 282                                                       &count,
 283                                                       drawable->loaderPrivate);
 284    } else if (screen->dri2.loader) {
 285       i = 0;
 286       if (intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT))
 287          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 288       if (intel_get_renderbuffer(fb, BUFFER_BACK_LEFT))
 289          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 290       if (intel_get_renderbuffer(fb, BUFFER_DEPTH))
 291          attachments[i++] = __DRI_BUFFER_DEPTH;
 292       if (intel_get_renderbuffer(fb, BUFFER_STENCIL))
 293          attachments[i++] = __DRI_BUFFER_STENCIL;
 294
 295       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 296                                                    &drawable->w,
 297                                                    &drawable->h,
 298                                                    attachments, i,
 299                                                    &count,
 300                                                    drawable->loaderPrivate);
 301    }
 302
 303    if (buffers == NULL)
 304       return;
 305
 306    drawable->x = 0;
 307    drawable->y = 0;
 308    drawable->backX = 0;
 309    drawable->backY = 0;
 310    drawable->numClipRects = 1;
 311    drawable->pClipRects[0].x1 = 0;
 312    drawable->pClipRects[0].y1 = 0;
 313    drawable->pClipRects[0].x2 = drawable->w;
 314    drawable->pClipRects[0].y2 = drawable->h;
 315    drawable->numBackClipRects = 1;
 316    drawable->pBackClipRects[0].x1 = 0;
 317    drawable->pBackClipRects[0].y1 = 0;
 318    drawable->pBackClipRects[0].x2 = drawable->w;
 319    drawable->pBackClipRects[0].y2 = drawable->h;
 320
 321    depth_region = NULL;
 322    for (i = 0; i < count; i++) {
 323        switch (buffers[i].attachment) {
 324        case __DRI_BUFFER_FRONT_LEFT:
 325            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 326            region_name = "dri2 front buffer";
 327            break;
 328
 329        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 330            rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 331            region_name = "dri2 fake front buffer";
 332            break;
 333
 334        case __DRI_BUFFER_BACK_LEFT:
 335            rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
 336            region_name = "dri2 back buffer";
 337            break;
 338
 339        case __DRI_BUFFER_DEPTH:
 340            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 341            region_name = "dri2 depth buffer";
 342            break;
 343
 344        case __DRI_BUFFER_DEPTH_STENCIL:
 345            rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 346            region_name = "dri2 depth / stencil buffer";
 347            break;
 348
 349        case __DRI_BUFFER_STENCIL:
 350            rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 351            region_name = "dri2 stencil buffer";
 352            break;
 353
 354        case __DRI_BUFFER_ACCUM:
 355        default:
 356            fprintf(stderr,
 357                    "unhandled buffer attach event, attacment type %d\n",
 358                    buffers[i].attachment);
 359            return;
 360        }
 361
 362        if (rb == NULL)
 363           continue;
 364
 365        if (rb->region && rb->region->name == buffers[i].name)
 366              continue;
 367
 368        if (INTEL_DEBUG & DEBUG_DRI)
 369           fprintf(stderr,
 370                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 371                   buffers[i].name, buffers[i].attachment,
 372                   buffers[i].cpp, buffers[i].pitch);
 373
 374        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 375           if (INTEL_DEBUG & DEBUG_DRI)
 376              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 377           intel_region_reference(&region, depth_region);
 378        }
 379        else
 380           region = intel_region_alloc_for_handle(intel->intelScreen,
 381                                                  buffers[i].cpp,
 382                                                  drawable->w,
 383                                                  drawable->h,
 384                                                  buffers[i].pitch / buffers[i].cpp,
 385                                                  buffers[i].name,
 386                                                  region_name);
 387
 388        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 389           depth_region = region;
 390
 391        intel_renderbuffer_set_region(intel, rb, region);
 392        intel_region_release(&region);
 393
 394        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 395           rb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 396           if (rb != NULL) {
 397              struct intel_region *stencil_region = NULL;
 398
 399              if (rb->region && rb->region->name == buffers[i].name)
 400                    continue;
 401
 402              intel_region_reference(&stencil_region, region);
 403              intel_renderbuffer_set_region(intel, rb, stencil_region);
 404              intel_region_release(&stencil_region);
 405           }
 406        }
 407    }
 408
 409    driUpdateFramebufferSize(&intel->ctx, drawable);
 410 }
 411
 412 /**
 413  * intel_prepare_render should be called anywhere that curent read/drawbuffer
 414  * state is required.
 415  */
 416 void
 417 intel_prepare_render(struct intel_context *intel)
 418 {
 419    __DRIcontext *driContext = intel->driContext;
 420    __DRIdrawable *drawable;
 421
 422    drawable = driContext->driDrawablePriv;
 423    if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
 424       if (drawable->lastStamp != drawable->dri2.stamp)
 425          intel_update_renderbuffers(driContext, drawable);
 426       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 427       driContext->dri2.draw_stamp = drawable->dri2.stamp;
 428    }
 429
 430    drawable = driContext->driReadablePriv;
 431    if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
 432       if (drawable->lastStamp != drawable->dri2.stamp)
 433          intel_update_renderbuffers(driContext, drawable);
 434       driContext->dri2.read_stamp = drawable->dri2.stamp;
 435    }
 436
 437    /* If we're currently rendering to the front buffer, the rendering
 438     * that will happen next will probably dirty the front buffer.  So
 439     * mark it as dirty here.
 440     */
 441    if (intel->is_front_buffer_rendering)
 442       intel->front_buffer_dirty = GL_TRUE;
 443
 444    /* Wait for the swapbuffers before the one we just emitted, so we
 445     * don't get too many swaps outstanding for apps that are GPU-heavy
 446     * but not CPU-heavy.
 447     *
 448     * We're using intelDRI2Flush (called from the loader before
 449     * swapbuffer) and glFlush (for front buffer rendering) as the
 450     * indicator that a frame is done and then throttle when we get
 451     * here as we prepare to render the next frame.  At this point for
 452     * round trips for swap/copy and getting new buffers are done and
 453     * we'll spend less time waiting on the GPU.
 454     *
 455     * Unfortunately, we don't have a handle to the batch containing
 456     * the swap, and getting our hands on that doesn't seem worth it,
 457     * so we just us the first batch we emitted after the last swap.
 458     */
 459    if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
 460       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 461       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 462       intel->first_post_swapbuffers_batch = NULL;
 463       intel->need_throttle = GL_FALSE;
 464    }
 465 }
 466
 467 static void
 468 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 469 {
 470     struct intel_context *intel = intel_context(ctx);
 471     __DRIcontext *driContext = intel->driContext;
 472
 473     if (intel->saved_viewport)
 474         intel->saved_viewport(ctx, x, y, w, h);
 475
 476     if (!intel->meta.internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 477        dri2InvalidateDrawable(driContext->driDrawablePriv);
 478        dri2InvalidateDrawable(driContext->driReadablePriv);
 479     }
 480 }
 481
 482 static const struct dri_debug_control debug_control[] = {
 483    { "tex",   DEBUG_TEXTURE},
 484    { "state", DEBUG_STATE},
 485    { "ioctl", DEBUG_IOCTL},
 486    { "blit",  DEBUG_BLIT},
 487    { "mip",   DEBUG_MIPTREE},
 488    { "fall",  DEBUG_FALLBACKS},
 489    { "verb",  DEBUG_VERBOSE},
 490    { "bat",   DEBUG_BATCH},
 491    { "pix",   DEBUG_PIXEL},
 492    { "buf",   DEBUG_BUFMGR},
 493    { "reg",   DEBUG_REGION},
 494    { "fbo",   DEBUG_FBO},
 495    { "gs",    DEBUG_GS},
 496    { "sync",  DEBUG_SYNC},
 497    { "prim",  DEBUG_PRIMS },
 498    { "vert",  DEBUG_VERTS },
 499    { "dri",   DEBUG_DRI },
 500    { "sf",    DEBUG_SF },
 501    { "san",   DEBUG_SANITY },
 502    { "sleep", DEBUG_SLEEP },
 503    { "stats", DEBUG_STATS },
 504    { "tile",  DEBUG_TILE },
 505    { "sing",  DEBUG_SINGLE_THREAD },
 506    { "thre",  DEBUG_SINGLE_THREAD },
 507    { "wm",    DEBUG_WM },
 508    { "glsl_force", DEBUG_GLSL_FORCE },
 509    { "urb",   DEBUG_URB },
 510    { "vs",    DEBUG_VS },
 511    { "clip",  DEBUG_CLIP },
 512    { NULL,    0 }
 513 };
 514
 515
 516 static void
 517 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 518 {
 519     struct intel_context *intel = intel_context(ctx);
 520
 521    _swrast_InvalidateState(ctx, new_state);
 522    _swsetup_InvalidateState(ctx, new_state);
 523    _vbo_InvalidateState(ctx, new_state);
 524    _tnl_InvalidateState(ctx, new_state);
 525    _tnl_invalidate_vertex_state(ctx, new_state);
 526
 527    intel->NewGLState |= new_state;
 528
 529    if (intel->vtbl.invalidate_state)
 530       intel->vtbl.invalidate_state( intel, new_state );
 531 }
 532
 533 void
 534 intel_flush(GLcontext *ctx)
 535 {
 536    struct intel_context *intel = intel_context(ctx);
 537
 538    if (intel->Fallback)
 539       _swrast_flush(ctx);
 540
 541    if (intel->gen < 4)
 542       INTEL_FIREVERTICES(intel);
 543
 544    if (intel->batch->map != intel->batch->ptr)
 545       intel_batchbuffer_flush(intel->batch);
 546 }
 547
 548 static void
 549 intel_glFlush(GLcontext *ctx)
 550 {
 551    struct intel_context *intel = intel_context(ctx);
 552
 553    intel_flush(ctx);
 554    intel_flush_front(ctx);
 555    intel->need_throttle = GL_TRUE;
 556 }
 557
 558 void
 559 intelFinish(GLcontext * ctx)
 560 {
 561    struct gl_framebuffer *fb = ctx->DrawBuffer;
 562    int i;
 563
 564    intel_flush(ctx);
 565    intel_flush_front(ctx);
 566
 567    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 568        struct intel_renderbuffer *irb;
 569
 570        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 571
 572        if (irb && irb->region)
 573           drm_intel_bo_wait_rendering(irb->region->buffer);
 574    }
 575    if (fb->_DepthBuffer) {
 576       /* XXX: Wait on buffer idle */
 577    }
 578 }
 579
 580 void
 581 intelInitDriverFunctions(struct dd_function_table *functions)
 582 {
 583    _mesa_init_driver_functions(functions);
 584
 585    functions->Flush = intel_glFlush;
 586    functions->Finish = intelFinish;
 587    functions->GetString = intelGetString;
 588    functions->UpdateState = intelInvalidateState;
 589
 590    intelInitTextureFuncs(functions);
 591    intelInitTextureImageFuncs(functions);
 592    intelInitTextureSubImageFuncs(functions);
 593    intelInitTextureCopyImageFuncs(functions);
 594    intelInitStateFuncs(functions);
 595    intelInitClearFuncs(functions);
 596    intelInitBufferFuncs(functions);
 597    intelInitPixelFuncs(functions);
 598    intelInitBufferObjectFuncs(functions);
 599    intel_init_syncobj_functions(functions);
 600 }
 601
 602
 603 GLboolean
 604 intelInitContext(struct intel_context *intel,
 605                  int api,
 606                  const __GLcontextModes * mesaVis,
 607                  __DRIcontext * driContextPriv,
 608                  void *sharedContextPrivate,
 609                  struct dd_function_table *functions)
 610 {
 611    GLcontext *ctx = &intel->ctx;
 612    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 613    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 614    struct intel_screen *intelScreen = sPriv->private;
 615    int bo_reuse_mode;
 616    __GLcontextModes visual;
 617
 618    /* we can't do anything without a connection to the device */
 619    if (intelScreen->bufmgr == NULL)
 620       return GL_FALSE;
 621
 622    /* Can't rely on invalidate events, fall back to glViewport hack */
 623    if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
 624       intel->saved_viewport = functions->Viewport;
 625       functions->Viewport = intel_viewport;
 626    }
 627
 628    if (mesaVis == NULL) {
 629       memset(&visual, 0, sizeof visual);
 630       mesaVis = &visual;
 631    }
 632
 633    if (!_mesa_initialize_context_for_api(&intel->ctx, api, mesaVis, shareCtx,
 634                                          functions, (void *) intel)) {
 635       printf("%s: failed to init mesa context\n", __FUNCTION__);
 636       return GL_FALSE;
 637    }
 638
 639    driContextPriv->driverPrivate = intel;
 640    intel->intelScreen = intelScreen;
 641    intel->driContext = driContextPriv;
 642    intel->driFd = sPriv->fd;
 643
 644    intel->has_xrgb_textures = GL_TRUE;
 645    if (IS_GEN6(intel->intelScreen->deviceID)) {
 646       intel->gen = 6;
 647       intel->needs_ff_sync = GL_TRUE;
 648       intel->has_luminance_srgb = GL_TRUE;
 649    } else if (IS_GEN5(intel->intelScreen->deviceID)) {
 650       intel->gen = 5;
 651       intel->needs_ff_sync = GL_TRUE;
 652       intel->has_luminance_srgb = GL_TRUE;
 653    } else if (IS_965(intel->intelScreen->deviceID)) {
 654       intel->gen = 4;
 655       if (IS_G4X(intel->intelScreen->deviceID)) {
 656           intel->has_luminance_srgb = GL_TRUE;
 657           intel->is_g4x = GL_TRUE;
 658       }
 659    } else if (IS_9XX(intel->intelScreen->deviceID)) {
 660       intel->gen = 3;
 661       if (IS_945(intel->intelScreen->deviceID)) {
 662          intel->is_945 = GL_TRUE;
 663       }
 664    } else {
 665       intel->gen = 2;
 666       if (intel->intelScreen->deviceID == PCI_CHIP_I830_M ||
 667           intel->intelScreen->deviceID == PCI_CHIP_845_G) {
 668          intel->has_xrgb_textures = GL_FALSE;
 669       }
 670    }
 671
 672    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 673                        sPriv->myNum, (intel->gen >= 4) ? "i965" : "i915");
 674    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 675       intel->maxBatchSize = 4096;
 676    else
 677       intel->maxBatchSize = BATCH_SZ;
 678
 679    intel->bufmgr = intelScreen->bufmgr;
 680
 681    bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 682    switch (bo_reuse_mode) {
 683    case DRI_CONF_BO_REUSE_DISABLED:
 684       break;
 685    case DRI_CONF_BO_REUSE_ALL:
 686       intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 687       break;
 688    }
 689
 690    /* This doesn't yet catch all non-conformant rendering, but it's a
 691     * start.
 692     */
 693    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 694       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 695       if (value > 0) {
 696          intel->conformance_mode = value;
 697       }
 698       else {
 699          intel->conformance_mode = 1;
 700       }
 701    }
 702
 703    if (intel->conformance_mode > 0) {
 704       ctx->Const.MinLineWidth = 1.0;
 705       ctx->Const.MinLineWidthAA = 1.0;
 706       ctx->Const.MaxLineWidth = 1.0;
 707       ctx->Const.MaxLineWidthAA = 1.0;
 708       ctx->Const.LineWidthGranularity = 1.0;
 709    }
 710    else {
 711       ctx->Const.MinLineWidth = 1.0;
 712       ctx->Const.MinLineWidthAA = 1.0;
 713       ctx->Const.MaxLineWidth = 5.0;
 714       ctx->Const.MaxLineWidthAA = 5.0;
 715       ctx->Const.LineWidthGranularity = 0.5;
 716    }
 717
 718    ctx->Const.MinPointSize = 1.0;
 719    ctx->Const.MinPointSizeAA = 1.0;
 720    ctx->Const.MaxPointSize = 255.0;
 721    ctx->Const.MaxPointSizeAA = 3.0;
 722    ctx->Const.PointSizeGranularity = 1.0;
 723
 724    ctx->Const.MaxSamples = 1.0;
 725
 726    /* reinitialize the context point state.
 727     * It depend on constants in __GLcontextRec::Const
 728     */
 729    _mesa_init_point(ctx);
 730
 731    meta_init_metaops(ctx, &intel->meta);
 732    if (intel->gen >= 4) {
 733       if (MAX_WIDTH > 8192)
 734          ctx->Const.MaxRenderbufferSize = 8192;
 735    } else {
 736       if (MAX_WIDTH > 2048)
 737          ctx->Const.MaxRenderbufferSize = 2048;
 738    }
 739
 740    /* Initialize the software rasterizer and helper modules. */
 741    _swrast_CreateContext(ctx);
 742    _vbo_CreateContext(ctx);
 743    _tnl_CreateContext(ctx);
 744    _swsetup_CreateContext(ctx);
 745
 746    /* Configure swrast to match hardware characteristics: */
 747    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 748    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 749
 750    _mesa_meta_init(ctx);
 751
 752    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 753    intel->hw_stipple = 1;
 754
 755    /* XXX FBO: this doesn't seem to be used anywhere */
 756    switch (mesaVis->depthBits) {
 757    case 0:                     /* what to do in this case? */
 758    case 16:
 759       intel->polygon_offset_scale = 1.0;
 760       break;
 761    case 24:
 762       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 763       break;
 764    default:
 765       assert(0);
 766       break;
 767    }
 768
 769    if (intel->gen >= 4)
 770       intel->polygon_offset_scale /= 0xffff;
 771
 772    intel->RenderIndex = ~0;
 773
 774    switch (ctx->API) {
 775    case API_OPENGL:
 776       intelInitExtensions(ctx);
 777       break;
 778    case API_OPENGLES:
 779       break;
 780    case API_OPENGLES2:
 781       intelInitExtensionsES2(ctx);
 782       break;
 783    }
 784
 785    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 786    if (INTEL_DEBUG & DEBUG_BUFMGR)
 787       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 788
 789    intel->batch = intel_batchbuffer_alloc(intel);
 790
 791    intel_fbo_init(intel);
 792
 793    if (intel->ctx.Mesa_DXTn) {
 794       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 795       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 796    }
 797    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 798       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 799    }
 800    intel->use_texture_tiling = driQueryOptionb(&intel->optionCache,
 801                                                "texture_tiling");
 802    intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
 803
 804    intel->prim.primitive = ~0;
 805
 806    /* Force all software fallbacks */
 807    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 808       fprintf(stderr, "disabling 3D rasterization\n");
 809       intel->no_rast = 1;
 810    }
 811
 812    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 813       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 814       intel->always_flush_batch = 1;
 815    }
 816
 817    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 818       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 819       intel->always_flush_cache = 1;
 820    }
 821
 822    /* Disable all hardware rendering (skip emitting batches and fences/waits
 823     * to the kernel)
 824     */
 825    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 826
 827    return GL_TRUE;
 828 }
 829
 830 void
 831 intelDestroyContext(__DRIcontext * driContextPriv)
 832 {
 833    struct intel_context *intel =
 834       (struct intel_context *) driContextPriv->driverPrivate;
 835
 836    assert(intel);               /* should never be null */
 837    if (intel) {
 838       INTEL_FIREVERTICES(intel);
 839
 840       _mesa_meta_free(&intel->ctx);
 841
 842       meta_destroy_metaops(&intel->meta);
 843
 844       intel->vtbl.destroy(intel);
 845
 846       _swsetup_DestroyContext(&intel->ctx);
 847       _tnl_DestroyContext(&intel->ctx);
 848       _vbo_DestroyContext(&intel->ctx);
 849
 850       _swrast_DestroyContext(&intel->ctx);
 851       intel->Fallback = 0x0;      /* don't call _swrast_Flush later */
 852
 853       intel_batchbuffer_free(intel->batch);
 854       intel->batch = NULL;
 855
 856       free(intel->prim.vb);
 857       intel->prim.vb = NULL;
 858       drm_intel_bo_unreference(intel->prim.vb_bo);
 859       intel->prim.vb_bo = NULL;
 860       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 861       intel->first_post_swapbuffers_batch = NULL;
 862
 863       driDestroyOptionCache(&intel->optionCache);
 864
 865       /* free the Mesa context */
 866       _mesa_free_context_data(&intel->ctx);
 867
 868       FREE(intel);
 869       driContextPriv->driverPrivate = NULL;
 870    }
 871 }
 872
 873 GLboolean
 874 intelUnbindContext(__DRIcontext * driContextPriv)
 875 {
 876    /* Unset current context and dispath table */
 877    _mesa_make_current(NULL, NULL, NULL);
 878
 879    return GL_TRUE;
 880 }
 881
 882 GLboolean
 883 intelMakeCurrent(__DRIcontext * driContextPriv,
 884                  __DRIdrawable * driDrawPriv,
 885                  __DRIdrawable * driReadPriv)
 886 {
 887    struct intel_context *intel;
 888    GET_CURRENT_CONTEXT(curCtx);
 889
 890    if (driContextPriv)
 891       intel = (struct intel_context *) driContextPriv->driverPrivate;
 892    else
 893       intel = NULL;
 894
 895    /* According to the glXMakeCurrent() man page: "Pending commands to
 896     * the previous context, if any, are flushed before it is released."
 897     * But only flush if we're actually changing contexts.
 898     */
 899    if (intel_context(curCtx) && intel_context(curCtx) != intel) {
 900       _mesa_flush(curCtx);
 901    }
 902
 903    if (driContextPriv) {
 904       struct gl_framebuffer *fb, *readFb;
 905
 906       if (driDrawPriv == NULL && driReadPriv == NULL) {
 907          fb = _mesa_get_incomplete_framebuffer();
 908          readFb = _mesa_get_incomplete_framebuffer();
 909       } else {
 910          fb = driDrawPriv->driverPrivate;
 911          readFb = driReadPriv->driverPrivate;
 912          driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
 913          driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
 914       }
 915
 916       intel_prepare_render(intel);
 917       _mesa_make_current(&intel->ctx, fb, readFb);
 918
 919       /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
 920        * is NULL at that point.  We can't call _mesa_makecurrent()
 921        * first, since we need the buffer size for the initial
 922        * viewport.  So just call intel_draw_buffer() again here. */
 923       intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer);
 924    }
 925    else {
 926       _mesa_make_current(NULL, NULL, NULL);
 927    }
 928
 929    return GL_TRUE;
 930 }